import { afterEach, beforeEach, describe, expect, mock, test } from "bun:test"
import { $ } from "bun"
import fs from "node:fs/promises"
import Http from "node:http"
import path from "node:path"
import { NodeHttpServer } from "@effect/platform-node"
import { Effect, Exit, Fiber, Layer, Schema } from "effect"
import { FetchHttpClient, HttpServer, HttpServerRequest, HttpServerResponse } from "effect/unstable/http"
import { eq } from "drizzle-orm"
import { FSUtil } from "@opencode-ai/core/fs-util"
import { GlobalBus, type GlobalEvent } from "@/bus/global"
import { Database } from "@opencode-ai/core/database/database"
import { ProjectV2 } from "@opencode-ai/core/project"
import { ProjectTable } from "@opencode-ai/core/project/sql"
import { AbsolutePath } from "@opencode-ai/core/schema"
import { Session as SessionNs } from "@/session/session"
import { SessionID } from "@/session/schema"
import { SessionTable } from "@opencode-ai/core/session/sql"
import { EventSequenceTable } from "@opencode-ai/core/event/sql"
import { resetDatabase } from "../fixture/db"
import { disposeAllInstances, provideTmpdirInstance, requireInstance, TestInstance } from "../fixture/fixture"
import { testEffect } from "../lib/effect"
import { registerAdapter } from "../../src/control-plane/adapters"
import { WorkspaceV2 } from "@opencode-ai/core/workspace"
import { WorkspaceTable } from "@opencode-ai/core/control-plane/workspace.sql"
import type { Target, WorkspaceAdapter, WorkspaceInfo } from "../../src/control-plane/types"
import * as Workspace from "../../src/control-plane/workspace"
import { InstanceStore } from "@/project/instance-store"
import { InstanceBootstrap } from "@/project/bootstrap"
import { Auth } from "@/auth"
import { SessionPrompt } from "@/session/prompt"
import { Project } from "@/project/project"
import { Vcs } from "@/project/vcs"
import { RuntimeFlags } from "@/effect/runtime-flags"
import { EventV2Bridge } from "@/event-v2-bridge"
import { Ripgrep } from "@opencode-ai/core/ripgrep"

const originalEnv = {
  OPENCODE_AUTH_CONTENT: process.env.OPENCODE_AUTH_CONTENT,
  OPENCODE_EXPERIMENTAL_WORKSPACES: process.env.OPENCODE_EXPERIMENTAL_WORKSPACES,
  OTEL_EXPORTER_OTLP_HEADERS: process.env.OTEL_EXPORTER_OTLP_HEADERS,
  OTEL_EXPORTER_OTLP_ENDPOINT: process.env.OTEL_EXPORTER_OTLP_ENDPOINT,
  OTEL_RESOURCE_ATTRIBUTES: process.env.OTEL_RESOURCE_ATTRIBUTES,
}

const workspaceLayer = (experimentalWorkspaces: boolean) =>
  Workspace.layer.pipe(
    Layer.provide(Auth.defaultLayer),
    Layer.provide(SessionNs.defaultLayer),
    Layer.provide(SessionPrompt.defaultLayer),
    Layer.provide(Project.defaultLayer),
    Layer.provide(Vcs.defaultLayer),
    Layer.provide(Database.defaultLayer),
    Layer.provide(EventV2Bridge.defaultLayer),
    Layer.provide(FetchHttpClient.layer),
    Layer.provide(FSUtil.defaultLayer),
    Layer.provide(RuntimeFlags.layer({ experimentalWorkspaces })),
    Layer.provide(Ripgrep.defaultLayer),
    Layer.provide(InstanceStore.defaultLayer.pipe(Layer.provide(InstanceBootstrap.defaultLayer))),
  )

const testServerLayer = Layer.mergeAll(
  NodeHttpServer.layer(Http.createServer, { host: "127.0.0.1", port: 0 }),
  workspaceLayer(true),
  SessionNs.defaultLayer,
  Database.defaultLayer,
)
const it = testEffect(testServerLayer)

type RecordedCreate = {
  info: WorkspaceInfo
  env: Record<string, string | undefined>
  from?: WorkspaceInfo
}

type RecordedAdapter = {
  adapter: WorkspaceAdapter
  calls: {
    configure: WorkspaceInfo[]
    create: RecordedCreate[]
    list: number
    remove: WorkspaceInfo[]
    target: WorkspaceInfo[]
  }
}

type FetchCall = {
  url: URL
  method: string
  headers: Headers
  bodyText?: string
  json?: unknown
}

function unique(prefix: string) {
  return `${prefix}-${Math.random().toString(36).slice(2)}`
}

function restoreEnv() {
  Object.entries(originalEnv).forEach(([key, value]) => {
    if (value === undefined) {
      delete process.env[key]
      return
    }
    process.env[key] = value
  })
}

beforeEach(() => {
  restoreEnv()
  process.env.OPENCODE_EXPERIMENTAL_WORKSPACES = "true"
})

afterEach(async () => {
  mock.restore()
  await disposeAllInstances()
  restoreEnv()
  await resetDatabase()
})

async function initGitRepo(dir: string) {
  await fs.mkdir(dir, { recursive: true })
  await $`git init`.cwd(dir).quiet()
  await $`git config core.fsmonitor false`.cwd(dir).quiet()
  await $`git config commit.gpgsign false`.cwd(dir).quiet()
  await $`git config user.email "test@opencode.test"`.cwd(dir).quiet()
  await $`git config user.name "Test"`.cwd(dir).quiet()
  await fs.writeFile(path.join(dir, "tracked.txt"), "base\n")
  await $`git add tracked.txt`.cwd(dir).quiet()
  await $`git commit -m "base"`.cwd(dir).quiet()
}

const startWorkspaceSyncingWithFlag = (projectID: ProjectV2.ID, experimentalWorkspaces: boolean) =>
  Effect.runPromise(
    Workspace.use.startWorkspaceSyncing(projectID).pipe(Effect.provide(workspaceLayer(experimentalWorkspaces))),
  )

function captureGlobalEvents() {
  const events: GlobalEvent[] = []
  const handler = (event: GlobalEvent) => events.push(event)
  GlobalBus.on("event", handler)
  return {
    events,
    dispose() {
      GlobalBus.off("event", handler)
    },
  }
}

function expectExitContains(exit: Exit.Exit<unknown, unknown>, ...messages: string[]) {
  expect(Exit.isFailure(exit)).toBe(true)
  if (!Exit.isFailure(exit)) return
  for (const message of messages) expect(String(exit.cause)).toContain(message)
}

function eventuallyEffect(effect: Effect.Effect<void>, timeout = 1500) {
  return Effect.gen(function* () {
    const started = Date.now()
    let last: unknown
    while (Date.now() - started < timeout) {
      const exit = yield* Effect.exit(effect)
      if (exit._tag === "Success") return
      last = exit.cause
      yield* Effect.sleep("10 millis")
    }
    throw last ?? new Error("Timed out waiting for condition")
  })
}

function recordedAdapter(input: {
  target: (info: WorkspaceInfo) => Target | Promise<Target>
  configure?: (info: WorkspaceInfo) => WorkspaceInfo | Promise<WorkspaceInfo>
  create?: (info: WorkspaceInfo, env: Record<string, string | undefined>, from?: WorkspaceInfo) => Promise<void>
  list?: () => Omit<WorkspaceInfo, "id">[] | Promise<Omit<WorkspaceInfo, "id">[]>
  remove?: (info: WorkspaceInfo) => Promise<void>
}): RecordedAdapter {
  const calls: RecordedAdapter["calls"] = {
    configure: [],
    create: [],
    list: 0,
    remove: [],
    target: [],
  }

  return {
    calls,
    adapter: {
      name: "recorded",
      description: "recorded",
      configure(info) {
        calls.configure.push(structuredClone(info))
        return input.configure?.(info) ?? info
      },
      async create(info, env, from) {
        calls.create.push({
          info: structuredClone(info),
          env: { ...env },
          from: from ? structuredClone(from) : undefined,
        })
        await input.create?.(info, env, from)
      },
      ...(input.list
        ? {
            async list() {
              calls.list += 1
              return input.list?.() ?? []
            },
          }
        : {}),
      async remove(info) {
        calls.remove.push(structuredClone(info))
        await input.remove?.(info)
      },
      target(info) {
        calls.target.push(structuredClone(info))
        return input.target(info)
      },
    },
  }
}

function localAdapter(dir: string, input?: { createDir?: boolean; remove?: (info: WorkspaceInfo) => Promise<void> }) {
  return recordedAdapter({
    configure(info) {
      return { ...info, directory: dir }
    },
    async create() {
      if (input?.createDir === false) return
      await fs.mkdir(dir, { recursive: true })
    },
    remove: input?.remove,
    target() {
      return { type: "local", directory: dir }
    },
  })
}

function remoteAdapter(url: string, input?: { directory?: string | null; headers?: HeadersInit }) {
  return recordedAdapter({
    configure(info) {
      return { ...info, directory: input?.directory ?? info.directory }
    },
    target() {
      return { type: "remote", url, headers: input?.headers }
    },
  })
}

function eventStreamResponse(events: unknown[] = [], keepOpen = true) {
  const encoder = new TextEncoder()
  return new Response(
    new ReadableStream<Uint8Array>({
      start(controller) {
        if (keepOpen) controller.enqueue(encoder.encode(":\n\n"))
        events.forEach((event) => controller.enqueue(encoder.encode(`data: ${JSON.stringify(event)}\n\n`)))
        if (!keepOpen) controller.close()
      },
    }),
    { status: 200, headers: { "content-type": "text/event-stream" } },
  )
}

function serverUrl() {
  return Effect.gen(function* () {
    return HttpServer.formatAddress((yield* HttpServer.HttpServer).address)
  })
}

function workspaceInfo(projectID: ProjectV2.ID, type: string, input?: Partial<Workspace.Info>): Workspace.Info {
  return {
    id: input?.id ?? WorkspaceV2.ID.ascending(),
    type,
    name: input?.name ?? unique("workspace"),
    branch: input?.branch ?? null,
    directory: input?.directory ?? null,
    extra: input?.extra ?? null,
    projectID,
    timeUsed: input?.timeUsed ?? Date.now(),
  }
}

function insertWorkspace(info: Workspace.Info) {
  return Database.Service.use(({ db }) =>
    db
      .insert(WorkspaceTable)
      .values({
        id: info.id,
        type: info.type,
        branch: info.branch,
        name: info.name,
        directory: info.directory,
        extra: info.extra,
        project_id: info.projectID,
        time_used: info.timeUsed,
      })
      .run()
      .pipe(Effect.orDie),
  )
}

function insertProject(id: ProjectV2.ID, worktree: string) {
  return Database.Service.use(({ db }) =>
    db
      .insert(ProjectTable)
      .values({
        id,
        worktree: AbsolutePath.make(worktree),
        vcs: null,
        name: null,
        time_created: Date.now(),
        time_updated: Date.now(),
        sandboxes: [],
      })
      .run()
      .pipe(Effect.orDie),
  )
}

function attachSessionToWorkspace(sessionID: SessionID, workspaceID: WorkspaceV2.ID) {
  return Database.Service.use(({ db }) =>
    db
      .update(SessionTable)
      .set({ workspace_id: workspaceID })
      .where(eq(SessionTable.id, sessionID))
      .run()
      .pipe(Effect.orDie),
  )
}

function sessionSequence(sessionID: SessionID) {
  return Database.Service.use(({ db }) =>
    db
      .select({ seq: EventSequenceTable.seq })
      .from(EventSequenceTable)
      .where(eq(EventSequenceTable.aggregate_id, sessionID))
      .get()
      .pipe(
        Effect.orDie,
        Effect.map((row) => row?.seq),
      ),
  )
}

function sessionSequenceOwner(sessionID: SessionID) {
  return Database.Service.use(({ db }) =>
    db
      .select({ ownerID: EventSequenceTable.owner_id })
      .from(EventSequenceTable)
      .where(eq(EventSequenceTable.aggregate_id, sessionID))
      .get()
      .pipe(
        Effect.orDie,
        Effect.map((row) => row?.ownerID),
      ),
  )
}

describe("workspace schemas and exports", () => {
  test("keeps the historical event type names", () => {
    expect(Workspace.Event.Ready.type).toBe("workspace.ready")
    expect(Workspace.Event.Failed.type).toBe("workspace.failed")
    expect(Workspace.Event.Status.type).toBe("workspace.status")
  })

  test("validates create input with workspace id, project id, branch, type, and extra", () => {
    const input = {
      id: WorkspaceV2.ID.ascending("wrk_schema_create"),
      type: "worktree",
      branch: "feature/schema",
      projectID: ProjectV2.ID.make("project-schema"),
      extra: { nested: true },
    }

    const decode = Schema.decodeUnknownSync(Workspace.CreateInput)
    expect(decode(input)).toEqual(input)
    expect(() => decode({ ...input, id: 1 })).toThrow()
    expect(() => decode({ ...input, branch: 1 })).toThrow()
  })
})

describe("workspace CRUD", () => {
  it.instance(
    "get returns undefined for a missing workspace",
    () =>
      Effect.gen(function* () {
        const workspace = yield* Workspace.Service
        expect(yield* workspace.get(WorkspaceV2.ID.ascending("wrk_missing_get"))).toBeUndefined()
      }),
    { git: true },
  )

  it.instance(
    "list maps database rows, filters by project, and sorts by id",
    () =>
      Effect.gen(function* () {
        const instance = yield* requireInstance
        const workspace = yield* Workspace.Service
        const otherProjectID = ProjectV2.ID.make("project-other")
        yield* insertProject(otherProjectID, "/tmp/other")
        const a = workspaceInfo(instance.project.id, "manual", {
          id: WorkspaceV2.ID.ascending("wrk_a_list"),
          branch: "a",
          directory: "/a",
          extra: { a: true },
        })
        const b = workspaceInfo(instance.project.id, "manual", {
          id: WorkspaceV2.ID.ascending("wrk_b_list"),
          branch: "b",
          directory: "/b",
          extra: ["b"],
        })
        const other = workspaceInfo(otherProjectID, "manual", { id: WorkspaceV2.ID.ascending("wrk_c_list") })
        yield* insertWorkspace(b)
        yield* insertWorkspace(other)
        yield* insertWorkspace(a)

        expect(yield* workspace.list(instance.project)).toEqual([a, b])
      }),
    { git: true },
  )

  it.instance(
    "create configures, persists, creates, starts local sync, and passes environment",
    () =>
      Effect.gen(function* () {
        const instance = yield* requireInstance
        const workspace = yield* Workspace.Service
        process.env.OPENCODE_AUTH_CONTENT = JSON.stringify({ test: { type: "api", key: "secret" } })
        process.env.OTEL_EXPORTER_OTLP_HEADERS = "authorization=otel"
        process.env.OTEL_EXPORTER_OTLP_ENDPOINT = "https://otel.test"
        process.env.OTEL_RESOURCE_ATTRIBUTES = "service.name=opencode-test"

        const workspaceID = WorkspaceV2.ID.ascending("wrk_create_local")
        const type = unique("create-local")
        const targetDir = path.join(instance.directory, "created-local")
        const recorded = recordedAdapter({
          configure(info) {
            return {
              ...info,
              branch: "configured-branch",
              name: "Configured Name",
              directory: targetDir,
              extra: { configured: true },
            }
          },
          async create() {
            await fs.mkdir(targetDir, { recursive: true })
          },
          target() {
            return { type: "local", directory: targetDir }
          },
        })
        registerAdapter(instance.project.id, type, recorded.adapter)

        const info = yield* workspace.create({
          id: workspaceID,
          type,
          branch: null,
          projectID: instance.project.id,
          extra: null,
        })

        expect(info).toEqual({
          id: workspaceID,
          type,
          branch: "configured-branch",
          name: "Configured Name",
          directory: targetDir,
          extra: { configured: true },
          projectID: instance.project.id,
          timeUsed: info.timeUsed,
        })
        expect(yield* workspace.get(workspaceID)).toEqual(info)
        expect(yield* workspace.list(instance.project)).toEqual([info])
        expect(recorded.calls.configure).toHaveLength(1)
        expect(recorded.calls.configure[0]).toMatchObject({ id: workspaceID, type, directory: null })
        expect(recorded.calls.create).toHaveLength(1)
        expect(recorded.calls.create[0].info).toEqual({
          id: workspaceID,
          type,
          branch: "configured-branch",
          name: "Configured Name",
          directory: targetDir,
          extra: { configured: true },
          projectID: instance.project.id,
        })
        expect(JSON.parse(recorded.calls.create[0].env.OPENCODE_AUTH_CONTENT ?? "{}")).toEqual({
          test: { type: "api", key: "secret" },
        })
        expect(recorded.calls.create[0].env.OPENCODE_WORKSPACE_ID).toBe(workspaceID)
        expect(recorded.calls.create[0].env.OPENCODE_EXPERIMENTAL_WORKSPACES).toBe("true")
        expect(recorded.calls.create[0].env.OTEL_EXPORTER_OTLP_HEADERS).toBe("authorization=otel")
        expect(recorded.calls.create[0].env.OTEL_EXPORTER_OTLP_ENDPOINT).toBe("https://otel.test")
        expect(recorded.calls.create[0].env.OTEL_RESOURCE_ATTRIBUTES).toBe("service.name=opencode-test")
        expect((yield* workspace.status()).find((item) => item.workspaceID === workspaceID)?.status).toBe("connected")

        yield* workspace.remove(workspaceID)
        expect((yield* workspace.status()).find((item) => item.workspaceID === workspaceID)?.status).toBeUndefined()
      }),
    { git: true },
  )

  it.instance(
    "create propagates configure failures and does not insert a workspace",
    () =>
      Effect.gen(function* () {
        const instance = yield* requireInstance
        const workspace = yield* Workspace.Service
        const type = unique("configure-failure")
        registerAdapter(
          instance.project.id,
          type,
          recordedAdapter({
            configure() {
              throw new Error("configure exploded")
            },
            target() {
              return { type: "local", directory: "/unused" }
            },
          }).adapter,
        )

        expectExitContains(
          yield* Effect.exit(workspace.create({ type, branch: null, projectID: instance.project.id, extra: null })),
          "configure exploded",
        )
        expect(yield* workspace.list(instance.project)).toEqual([])
      }),
    { git: true },
  )

  it.instance(
    "create leaves the inserted row when adapter create fails",
    () =>
      Effect.gen(function* () {
        const instance = yield* requireInstance
        const workspace = yield* Workspace.Service
        const type = unique("create-failure")
        const recorded = recordedAdapter({
          async create() {
            throw new Error("create exploded")
          },
          target() {
            return { type: "local", directory: "/unused" }
          },
        })
        registerAdapter(instance.project.id, type, recorded.adapter)

        expectExitContains(
          yield* Effect.exit(
            workspace.create({ type, branch: "branch", projectID: instance.project.id, extra: { x: 1 } }),
          ),
          "create exploded",
        )

        const rows = yield* workspace.list(instance.project)
        expect(rows).toHaveLength(1)
        expect(rows[0]).toMatchObject({ type, branch: "branch", extra: { x: 1 } })
        expect(recorded.calls.target).toHaveLength(0)
        yield* workspace.remove(rows[0].id)
      }),
    { git: true },
  )

  it.instance(
    "create returns after a local workspace reports error",
    () =>
      Effect.gen(function* () {
        const instance = yield* requireInstance
        const workspace = yield* Workspace.Service
        const type = unique("local-error")
        const missing = path.join(instance.directory, "missing-local-target")
        const recorded = localAdapter(missing, { createDir: false })
        registerAdapter(instance.project.id, type, recorded.adapter)

        const info = yield* workspace.create({ type, branch: null, projectID: instance.project.id, extra: null })

        expect(info.directory).toBe(missing)
        expect((yield* workspace.status()).find((item) => item.workspaceID === info.id)?.status).toBe("error")
        yield* workspace.remove(info.id)
      }),
    { git: true },
  )

  it.instance(
    "syncList registers adapter-listed workspaces that are missing by name",
    () =>
      Effect.gen(function* () {
        const instance = yield* requireInstance
        const workspace = yield* Workspace.Service
        const type = unique("list-sync")
        const existing = workspaceInfo(instance.project.id, type, {
          id: WorkspaceV2.ID.ascending("wrk_list_sync_existing"),
          name: "existing",
          directory: path.join(instance.directory, "existing"),
        })
        yield* insertWorkspace(existing)

        const discovered = {
          type,
          name: "discovered",
          branch: "feature/discovered",
          directory: path.join(instance.directory, "discovered"),
          extra: { source: "adapter" },
          projectID: instance.project.id,
        }
        const recorded = recordedAdapter({
          list() {
            return [
              {
                type,
                name: existing.name,
                branch: "ignored",
                directory: path.join(instance.directory, "ignored"),
                extra: null,
                projectID: instance.project.id,
              },
              discovered,
            ]
          },
          target(info) {
            return { type: "local", directory: info.directory ?? instance.directory }
          },
        })
        registerAdapter(instance.project.id, type, recorded.adapter)

        yield* workspace.syncList(instance.project)
        const synced = (yield* workspace.list(instance.project)).filter((item) => item.name === discovered.name)

        expect(synced).toHaveLength(1)
        expect(synced[0]).toMatchObject(discovered)
        expect(synced[0]?.id).toStartWith("wrk_")
        expect(yield* workspace.list(instance.project)).toEqual(expect.arrayContaining([existing, synced[0]]))
        expect(recorded.calls.list).toBe(1)
        expect(recorded.calls.configure).toHaveLength(0)
        expect(recorded.calls.create).toHaveLength(0)
        expect(recorded.calls.target).toHaveLength(1)
      }),
    { git: true },
  )

  it.instance(
    "syncList calls every registered adapter with a list method",
    () =>
      Effect.gen(function* () {
        const instance = yield* requireInstance
        const workspace = yield* Workspace.Service
        const typeA = unique("list-sync-a")
        const typeB = unique("list-sync-b")
        const adapterA = recordedAdapter({
          list() {
            return [
              {
                type: typeA,
                name: "adapter-a",
                branch: null,
                directory: path.join(instance.directory, "adapter-a"),
                extra: null,
                projectID: instance.project.id,
              },
            ]
          },
          target(info) {
            return { type: "local", directory: info.directory ?? instance.directory }
          },
        })
        const adapterB = recordedAdapter({
          list() {
            return [
              {
                type: typeB,
                name: "adapter-b",
                branch: null,
                directory: path.join(instance.directory, "adapter-b"),
                extra: null,
                projectID: instance.project.id,
              },
            ]
          },
          target(info) {
            return { type: "local", directory: info.directory ?? instance.directory }
          },
        })
        const noList = recordedAdapter({
          target() {
            return { type: "local", directory: instance.directory }
          },
        })
        registerAdapter(instance.project.id, typeA, adapterA.adapter)
        registerAdapter(instance.project.id, typeB, adapterB.adapter)
        registerAdapter(instance.project.id, unique("list-sync-none"), noList.adapter)

        yield* workspace.syncList(instance.project)
        const synced = yield* workspace.list(instance.project)

        expect(
          synced
            .filter((item) => item.type === typeA || item.type === typeB)
            .map((item) => item.name)
            .toSorted(),
        ).toEqual(["adapter-a", "adapter-b"])
        expect(adapterA.calls.list).toBe(1)
        expect(adapterB.calls.list).toBe(1)
        expect(noList.calls.list).toBe(0)
      }),
    { git: true },
  )

  it.live("remote create connects to routed event and history endpoints", () => {
    const calls: FetchCall[] = []
    return Effect.gen(function* () {
      yield* HttpServer.serveEffect()(
        Effect.gen(function* () {
          const req = yield* HttpServerRequest.HttpServerRequest
          const bodyText = yield* req.text
          const call = {
            url: new URL(req.url, "http://localhost"),
            method: req.method,
            headers: new Headers(req.headers),
            bodyText,
            json: bodyText ? JSON.parse(bodyText) : undefined,
          }
          calls.push(call)
          if (call.url.pathname === "/base/global/event")
            return HttpServerResponse.fromWeb(eventStreamResponse([], false))
          if (call.url.pathname === "/base/sync/history") return yield* HttpServerResponse.json([])
          return HttpServerResponse.text("unexpected", { status: 500 })
        }),
      )
      const url = yield* serverUrl()
      yield* provideTmpdirInstance(
        (dir) =>
          Effect.gen(function* () {
            const workspace = yield* Workspace.Service
            const instance = yield* requireInstance
            const type = unique("remote-create")
            const recorded = remoteAdapter(`${url}/base/?ignored=1#hash`, { directory: dir })
            registerAdapter(instance.project.id, type, recorded.adapter)

            const info = yield* workspace.create({ type, branch: null, projectID: instance.project.id, extra: null })

            expect(
              calls.map((call) => `${call.method} ${call.url.pathname}${call.url.search}${call.url.hash}`),
            ).toEqual(["GET /base/global/event", "POST /base/sync/history"])
            expect(calls[1].json).toEqual({})
            expect((yield* workspace.status()).find((item) => item.workspaceID === info.id)?.status).toBe("connected")
            expect(yield* workspace.isSyncing(info.id)).toBe(true)

            yield* workspace.remove(info.id)
            expect(yield* workspace.isSyncing(info.id)).toBe(false)
            expect((yield* workspace.status()).find((item) => item.workspaceID === info.id)?.status).toBeUndefined()
          }),
        { git: true },
      )
    })
  })

  it.instance(
    "remove returns undefined for a missing workspace",
    () =>
      Effect.gen(function* () {
        const workspace = yield* Workspace.Service
        expect(yield* workspace.remove(WorkspaceV2.ID.ascending("wrk_missing_remove"))).toBeUndefined()
      }),
    { git: true },
  )

  it.instance(
    "remove deletes the workspace, associated sessions, adapter resources, and status",
    () => {
      return Effect.gen(function* () {
        const { directory: dir } = yield* TestInstance
        const instance = yield* requireInstance
        const workspace = yield* Workspace.Service
        const sessionSvc = yield* SessionNs.Service
        const type = unique("remove-local")
        const recorded = localAdapter(path.join(dir, "remove-local"))
        registerAdapter(instance.project.id, type, recorded.adapter)
        const info = yield* workspace.create({ type, branch: null, projectID: instance.project.id, extra: null })
        const one = yield* sessionSvc.create({})
        const two = yield* sessionSvc.create({})
        yield* attachSessionToWorkspace(one.id, info.id)
        yield* attachSessionToWorkspace(two.id, info.id)

        const removed = yield* workspace.remove(info.id)

        expect(removed).toEqual(info)
        expect(yield* workspace.get(info.id)).toBeUndefined()
        expect(recorded.calls.remove).toEqual([info])
        expect((yield* workspace.status()).find((item) => item.workspaceID === info.id)?.status).toBeUndefined()
        const { db } = yield* Database.Service
        expect(
          yield* db
            .select({ id: SessionTable.id })
            .from(SessionTable)
            .where(eq(SessionTable.workspace_id, info.id))
            .all()
            .pipe(Effect.orDie),
        ).toEqual([])
      })
    },
    { git: true },
  )

  it.instance(
    "remove still deletes the row when the adapter cannot remove resources",
    () =>
      Effect.gen(function* () {
        const instance = yield* requireInstance
        const workspace = yield* Workspace.Service
        const type = unique("remove-throws")
        const info = workspaceInfo(instance.project.id, type, { id: WorkspaceV2.ID.ascending("wrk_remove_throws") })
        registerAdapter(
          instance.project.id,
          type,
          recordedAdapter({
            async remove() {
              throw new Error("remove exploded")
            },
            target() {
              return { type: "local", directory: "/unused" }
            },
          }).adapter,
        )
        yield* insertWorkspace(info)

        expect(yield* workspace.remove(info.id)).toEqual(info)
        expect(yield* workspace.get(info.id)).toBeUndefined()
      }),
    { git: true },
  )

  it.instance(
    "sessionWarp moves a session into a local workspace and claims ownership",
    () => {
      return Effect.gen(function* () {
        const { directory: dir } = yield* TestInstance
        const instance = yield* requireInstance
        const workspace = yield* Workspace.Service
        const sessionSvc = yield* SessionNs.Service
        const previousType = unique("warp-prev-local")
        const targetType = unique("warp-target-local")
        const previous = workspaceInfo(instance.project.id, previousType)
        const target = workspaceInfo(instance.project.id, targetType)
        yield* insertWorkspace(previous)
        yield* insertWorkspace(target)
        registerAdapter(instance.project.id, previousType, localAdapter(path.join(dir, "warp-prev-local")).adapter)
        registerAdapter(instance.project.id, targetType, localAdapter(path.join(dir, "warp-target-local")).adapter)
        const session = yield* sessionSvc.create({})
        yield* attachSessionToWorkspace(session.id, previous.id)

        yield* workspace.sessionWarp({ workspaceID: target.id, sessionID: session.id })

        const { db } = yield* Database.Service
        expect(
          (yield* db
            .select({ workspaceID: SessionTable.workspace_id })
            .from(SessionTable)
            .where(eq(SessionTable.id, session.id))
            .get()
            .pipe(Effect.orDie))?.workspaceID,
        ).toBe(target.id)
        expect(yield* sessionSequenceOwner(session.id)).toBe(target.id)
      })
    },
    { git: true },
  )

  it.instance(
    "sessionWarp applies source workspace patch to local target workspace",
    () => {
      return Effect.gen(function* () {
        const { directory: dir } = yield* TestInstance
        const instance = yield* requireInstance
        const workspace = yield* Workspace.Service
        const sessionSvc = yield* SessionNs.Service
        const previousType = unique("warp-patch-prev-local")
        const targetType = unique("warp-patch-target-local")
        const previousDir = path.join(dir, "warp-patch-prev-local")
        const targetDir = path.join(dir, "warp-patch-target-local")
        yield* Effect.promise(() => initGitRepo(previousDir))
        yield* Effect.promise(() => initGitRepo(targetDir))
        yield* Effect.promise(() => fs.writeFile(path.join(previousDir, "tracked.txt"), "changed\n"))
        yield* Effect.promise(() => fs.writeFile(path.join(previousDir, "new.txt"), "new\n"))

        const previous = workspaceInfo(instance.project.id, previousType)
        const target = workspaceInfo(instance.project.id, targetType)
        yield* insertWorkspace(previous)
        yield* insertWorkspace(target)
        registerAdapter(instance.project.id, previousType, localAdapter(previousDir, { createDir: false }).adapter)
        registerAdapter(instance.project.id, targetType, localAdapter(targetDir, { createDir: false }).adapter)
        const session = yield* sessionSvc.create({})
        yield* attachSessionToWorkspace(session.id, previous.id)

        yield* workspace.sessionWarp({ workspaceID: target.id, sessionID: session.id, copyChanges: true })

        expect(yield* Effect.promise(() => fs.readFile(path.join(targetDir, "tracked.txt"), "utf8"))).toBe("changed\n")
        expect(yield* Effect.promise(() => fs.readFile(path.join(targetDir, "new.txt"), "utf8"))).toBe("new\n")
      })
    },
    { git: true },
  )

  it.instance(
    "sessionWarp detaches a session to the local project and claims project ownership",
    () => {
      return Effect.gen(function* () {
        const { directory: dir } = yield* TestInstance
        const instance = yield* requireInstance
        const workspace = yield* Workspace.Service
        const sessionSvc = yield* SessionNs.Service
        const previousType = unique("warp-detach-local")
        const previous = workspaceInfo(instance.project.id, previousType)
        yield* insertWorkspace(previous)
        registerAdapter(instance.project.id, previousType, localAdapter(path.join(dir, "warp-detach-local")).adapter)
        const session = yield* sessionSvc.create({})
        yield* attachSessionToWorkspace(session.id, previous.id)

        yield* workspace.sessionWarp({ workspaceID: null, sessionID: session.id })

        const { db } = yield* Database.Service
        expect(
          (yield* db
            .select({ workspaceID: SessionTable.workspace_id })
            .from(SessionTable)
            .where(eq(SessionTable.id, session.id))
            .get()
            .pipe(Effect.orDie))?.workspaceID,
        ).toBeNull()
        expect(yield* sessionSequenceOwner(session.id)).toBe(instance.project.id)
      })
    },
    { git: true },
  )

  const itCrossInstance = process.platform === "win32" ? it.instance.skip : it.instance
  itCrossInstance(
    "sessionWarp detaches to the source project when invoked from a workspace instance",
    () =>
      Effect.gen(function* () {
        const instance = yield* requireInstance
        const projectID = instance.project.id
        const workspace = yield* Workspace.Service
        const sessionSvc = yield* SessionNs.Service
        const previousType = unique("warp-detach-workspace-instance")
        const previous = workspaceInfo(projectID, previousType)
        yield* insertWorkspace(previous)
        const session = yield* sessionSvc.create({})
        yield* attachSessionToWorkspace(session.id, previous.id)

        const workspaceProjectID = yield* provideTmpdirInstance(
          (workspaceDir) =>
            Effect.gen(function* () {
              registerAdapter(projectID, previousType, localAdapter(workspaceDir, { createDir: false }).adapter)
              const workspaceCtx = yield* requireInstance
              expect(workspaceCtx.project.id).not.toBe(projectID)
              yield* workspace.sessionWarp({ workspaceID: null, sessionID: session.id })
              return workspaceCtx.project.id
            }),
          { git: true },
        )

        const { db } = yield* Database.Service
        expect(
          (yield* db
            .select({ workspaceID: SessionTable.workspace_id })
            .from(SessionTable)
            .where(eq(SessionTable.id, session.id))
            .get()
            .pipe(Effect.orDie))?.workspaceID,
        ).toBeNull()
        expect(yield* sessionSequenceOwner(session.id)).toBe(projectID)
        expect(yield* sessionSequenceOwner(session.id)).not.toBe(workspaceProjectID)
      }),
    { git: true },
  )

  it.live("sessionWarp syncs previous remote history, replays it, steals, and claims the sequence", () => {
    const calls: FetchCall[] = []
    let historySessionID: SessionID | undefined
    let historySession: SessionNs.Info | undefined
    let historyNextSeq = 0
    return Effect.gen(function* () {
      yield* HttpServer.serveEffect()(
        Effect.gen(function* () {
          const req = yield* HttpServerRequest.HttpServerRequest
          const bodyText = yield* req.text
          const call = {
            url: new URL(req.url, "http://localhost"),
            method: req.method,
            headers: new Headers(req.headers),
            bodyText,
            json: bodyText ? JSON.parse(bodyText) : undefined,
          }
          calls.push(call)
          if (call.url.pathname === "/warp-source/sync/history") {
            return yield* HttpServerResponse.json([
              {
                id: `evt_${unique("warp-source-history")}`,
                aggregate_id: historySessionID!,
                seq: historyNextSeq,
                type: "session.updated.1",
                data: { sessionID: historySessionID!, info: historySession! },
              },
            ])
          }
          if (call.url.pathname === "/warp-source/vcs/diff/raw") return HttpServerResponse.text("remote patch")
          if (call.url.pathname === "/warp-target/sync/replay")
            return yield* HttpServerResponse.json({ sessionID: "ok" })
          if (call.url.pathname === "/warp-target/sync/steal")
            return yield* HttpServerResponse.json({ sessionID: "ok" })
          if (call.url.pathname === "/warp-target/vcs/apply") return yield* HttpServerResponse.json({ applied: true })
          return HttpServerResponse.text("unexpected", { status: 500 })
        }),
      )
      const url = yield* serverUrl()
      yield* provideTmpdirInstance(
        () =>
          Effect.gen(function* () {
            const workspace = yield* Workspace.Service
            const sessionSvc = yield* SessionNs.Service
            const instance = yield* requireInstance
            const previousType = unique("warp-remote-source")
            const targetType = unique("warp-remote-target")
            const previous = workspaceInfo(instance.project.id, previousType)
            const target = workspaceInfo(instance.project.id, targetType, { directory: "remote-target-dir" })
            yield* insertWorkspace(previous)
            yield* insertWorkspace(target)
            registerAdapter(instance.project.id, previousType, remoteAdapter(`${url}/warp-source`).adapter)
            registerAdapter(instance.project.id, targetType, remoteAdapter(`${url}/warp-target`).adapter)
            const session = yield* sessionSvc.create({})
            yield* attachSessionToWorkspace(session.id, previous.id)
            historySessionID = session.id
            historySession = { ...session, workspaceID: previous.id, title: "from source history" }
            historyNextSeq = ((yield* sessionSequence(session.id)) ?? -1) + 1

            yield* workspace.sessionWarp({ workspaceID: target.id, sessionID: session.id, copyChanges: true })

            expect(calls.map((call) => `${call.method} ${call.url.pathname}`)).toEqual([
              "POST /warp-source/sync/history",
              "GET /warp-source/vcs/diff/raw",
              "POST /warp-target/vcs/apply",
              "POST /warp-target/sync/replay",
              "POST /warp-target/sync/steal",
            ])
            expect(calls[0].json).toEqual({ [session.id]: historyNextSeq - 1 })
            expect(calls[2].json).toEqual({ patch: "remote patch" })
            expect(calls[3].json).toMatchObject({
              directory: "remote-target-dir",
              events: [
                {
                  aggregateID: session.id,
                  seq: 0,
                  type: "session.created.1",
                },
                {
                  aggregateID: session.id,
                  seq: historyNextSeq,
                  type: "session.updated.1",
                },
              ],
            })
            expect(calls[4].json).toEqual({ sessionID: session.id })
            expect((yield* sessionSvc.get(session.id)).title).toBe("from source history")
            expect(yield* sessionSequenceOwner(session.id)).toBe(target.id)
          }),
        { git: true },
      )
    })
  })
})

describe("workspace sync state", () => {
  it.instance(
    "startWorkspaceSyncing is disabled by the experimental workspace flag",
    () =>
      Effect.gen(function* () {
        const { directory: dir } = yield* TestInstance
        const instance = yield* requireInstance
        const workspace = yield* Workspace.Service
        const sessionSvc = yield* SessionNs.Service
        const type = unique("flag-disabled")
        const info = workspaceInfo(instance.project.id, type)
        const session = yield* sessionSvc.create({})
        yield* attachSessionToWorkspace(session.id, info.id)
        yield* insertWorkspace(info)
        registerAdapter(instance.project.id, type, localAdapter(path.join(dir, "flag-disabled")).adapter)

        yield* Effect.promise(() => startWorkspaceSyncingWithFlag(instance.project.id, false))
        yield* Effect.sleep("25 millis")

        expect((yield* workspace.status()).find((item) => item.workspaceID === info.id)?.status).toBeUndefined()
      }),
    { git: true },
  )

  it.instance(
    "startWorkspaceSyncing starts all workspaces",
    () =>
      Effect.gen(function* () {
        const { directory: dir } = yield* TestInstance
        const instance = yield* requireInstance
        const workspace = yield* Workspace.Service
        const projectID = instance.project.id
        const firstType = unique("first")
        const secondType = unique("second")
        const first = workspaceInfo(projectID, firstType)
        const second = workspaceInfo(projectID, secondType)
        yield* Effect.promise(() => fs.mkdir(path.join(dir, "first"), { recursive: true }))
        yield* Effect.promise(() => fs.mkdir(path.join(dir, "second"), { recursive: true }))
        yield* insertWorkspace(first)
        yield* insertWorkspace(second)
        registerAdapter(projectID, firstType, localAdapter(path.join(dir, "first")).adapter)
        registerAdapter(projectID, secondType, localAdapter(path.join(dir, "second")).adapter)
        yield* Effect.addFinalizer(() =>
          Effect.all([workspace.remove(first.id), workspace.remove(second.id)], { discard: true }).pipe(Effect.ignore),
        )

        yield* workspace.startWorkspaceSyncing(projectID)

        yield* eventuallyEffect(
          Effect.gen(function* () {
            const status = yield* workspace.status()
            expect(status.find((item) => item.workspaceID === first.id)?.status).toBe("connected")
            expect(status.find((item) => item.workspaceID === second.id)?.status).toBe("connected")
          }),
        )
      }),
    { git: true },
  )

  it.instance(
    "local start reports error when the target directory is missing",
    () =>
      Effect.gen(function* () {
        const { directory: dir } = yield* TestInstance
        const instance = yield* requireInstance
        const workspace = yield* Workspace.Service
        const sessionSvc = yield* SessionNs.Service
        const type = unique("missing-local")
        const info = workspaceInfo(instance.project.id, type)
        yield* insertWorkspace(info)
        registerAdapter(
          instance.project.id,
          type,
          localAdapter(path.join(dir, "missing-target"), { createDir: false }).adapter,
        )
        yield* attachSessionToWorkspace((yield* sessionSvc.create({})).id, info.id)

        yield* workspace.startWorkspaceSyncing(instance.project.id)

        yield* eventuallyEffect(
          Effect.gen(function* () {
            const status = yield* workspace.status()
            expect(status.find((item) => item.workspaceID === info.id)?.status).toBe("error")
          }),
        )
        expect(yield* workspace.isSyncing(info.id)).toBe(false)
        yield* workspace.remove(info.id)
      }),
    { git: true },
  )

  it.instance(
    "duplicate local status updates are suppressed",
    () =>
      Effect.gen(function* () {
        const { directory: dir } = yield* TestInstance
        const instance = yield* requireInstance
        const workspace = yield* Workspace.Service
        const sessionSvc = yield* SessionNs.Service
        const captured = captureGlobalEvents()
        yield* Effect.addFinalizer(() => Effect.sync(() => captured.dispose()))
        const type = unique("dedupe-local")
        const info = workspaceInfo(instance.project.id, type)
        const target = path.join(dir, "dedupe-local")
        yield* Effect.promise(() => fs.mkdir(target, { recursive: true }))
        yield* insertWorkspace(info)
        registerAdapter(instance.project.id, type, localAdapter(target).adapter)
        yield* attachSessionToWorkspace((yield* sessionSvc.create({})).id, info.id)

        yield* workspace.startWorkspaceSyncing(instance.project.id)
        yield* workspace.startWorkspaceSyncing(instance.project.id)

        yield* eventuallyEffect(
          Effect.gen(function* () {
            const status = yield* workspace.status()
            expect(status.find((item) => item.workspaceID === info.id)?.status).toBe("connected")
          }),
        )
        expect(
          captured.events.filter(
            (event) => event.workspace === info.id && event.payload.type === Workspace.Event.Status.type,
          ),
        ).toHaveLength(1)
        yield* workspace.remove(info.id)
      }),
    { git: true },
  )

  it.live("remote start emits disconnected, connecting, and connected then refuses duplicate listeners", () => {
    const calls: FetchCall[] = []
    return Effect.gen(function* () {
      yield* HttpServer.serveEffect()(
        Effect.gen(function* () {
          const req = yield* HttpServerRequest.HttpServerRequest
          const bodyText = yield* req.text
          const call = {
            url: new URL(req.url, "http://localhost"),
            method: req.method,
            headers: new Headers(req.headers),
            bodyText,
            json: bodyText ? JSON.parse(bodyText) : undefined,
          }
          calls.push(call)
          if (call.url.pathname === "/sync/global/event") return HttpServerResponse.fromWeb(eventStreamResponse())
          if (call.url.pathname === "/sync/sync/history") return HttpServerResponse.fromWeb(Response.json([]))
          return HttpServerResponse.text("unexpected", { status: 500 })
        }),
      )
      const url = yield* serverUrl()
      yield* provideTmpdirInstance(
        () =>
          Effect.gen(function* () {
            const workspace = yield* Workspace.Service
            const sessionSvc = yield* SessionNs.Service
            const instance = yield* requireInstance
            const captured = captureGlobalEvents()
            try {
              const type = unique("remote-start")
              const info = workspaceInfo(instance.project.id, type)
              yield* insertWorkspace(info)
              registerAdapter(instance.project.id, type, remoteAdapter(`${url}/sync`).adapter)
              yield* attachSessionToWorkspace((yield* sessionSvc.create({})).id, info.id)

              yield* workspace.startWorkspaceSyncing(instance.project.id)
              yield* eventuallyEffect(
                Effect.gen(function* () {
                  expect((yield* workspace.status()).find((item) => item.workspaceID === info.id)?.status).toBe(
                    "connected",
                  )
                }),
              )
              yield* workspace.startWorkspaceSyncing(instance.project.id)
              yield* Effect.sleep("25 millis")

              expect(
                captured.events
                  .filter((event) => event.workspace === info.id && event.payload.type === Workspace.Event.Status.type)
                  .map((event) => event.payload.properties.status),
              ).toEqual(["disconnected", "connecting", "connected"])
              expect(calls.filter((call) => call.url.pathname === "/sync/global/event")).toHaveLength(1)
              expect(calls.filter((call) => call.url.pathname === "/sync/sync/history")).toHaveLength(1)
              expect(yield* workspace.isSyncing(info.id)).toBe(true)

              yield* workspace.remove(info.id)
              expect(yield* workspace.isSyncing(info.id)).toBe(false)
            } finally {
              captured.dispose()
            }
          }),
        { git: true },
      )
    })
  })

  it.live("remote connection HTTP failures set error and clear syncing", () =>
    Effect.gen(function* () {
      yield* HttpServer.serveEffect()(
        Effect.gen(function* () {
          const req = yield* HttpServerRequest.HttpServerRequest
          if (new URL(req.url, "http://localhost").pathname === "/failed/global/event")
            return HttpServerResponse.text("nope", { status: 503 })
          return HttpServerResponse.fromWeb(Response.json([]))
        }),
      )
      const url = yield* serverUrl()
      yield* provideTmpdirInstance(
        () =>
          Effect.gen(function* () {
            const workspace = yield* Workspace.Service
            const sessionSvc = yield* SessionNs.Service
            const instance = yield* requireInstance
            const type = unique("remote-connect-fail")
            const info = workspaceInfo(instance.project.id, type)
            yield* insertWorkspace(info)
            registerAdapter(instance.project.id, type, remoteAdapter(`${url}/failed`).adapter)
            yield* attachSessionToWorkspace((yield* sessionSvc.create({})).id, info.id)

            yield* workspace.startWorkspaceSyncing(instance.project.id)

            yield* eventuallyEffect(
              Effect.gen(function* () {
                expect((yield* workspace.status()).find((item) => item.workspaceID === info.id)?.status).toBe("error")
              }),
            )
            expect(yield* workspace.isSyncing(info.id)).toBe(false)
            yield* workspace.remove(info.id)
          }),
        { git: true },
      )
    }),
  )

  it.live("remote history HTTP failures set error", () =>
    Effect.gen(function* () {
      yield* HttpServer.serveEffect()(
        Effect.gen(function* () {
          const req = yield* HttpServerRequest.HttpServerRequest
          const url = new URL(req.url, "http://localhost")
          if (url.pathname === "/history-failed/global/event")
            return HttpServerResponse.fromWeb(eventStreamResponse([], false))
          if (url.pathname === "/history-failed/sync/history")
            return HttpServerResponse.text("history failed", { status: 500 })
          return HttpServerResponse.fromWeb(Response.json([]))
        }),
      )
      const url = yield* serverUrl()
      yield* provideTmpdirInstance(
        () =>
          Effect.gen(function* () {
            const workspace = yield* Workspace.Service
            const sessionSvc = yield* SessionNs.Service
            const instance = yield* requireInstance
            const type = unique("remote-history-fail")
            const info = workspaceInfo(instance.project.id, type)
            yield* insertWorkspace(info)
            registerAdapter(instance.project.id, type, remoteAdapter(`${url}/history-failed`).adapter)
            yield* attachSessionToWorkspace((yield* sessionSvc.create({})).id, info.id)

            yield* workspace.startWorkspaceSyncing(instance.project.id)

            yield* eventuallyEffect(
              Effect.gen(function* () {
                expect((yield* workspace.status()).find((item) => item.workspaceID === info.id)?.status).toBe("error")
              }),
            )
            expect(yield* workspace.isSyncing(info.id)).toBe(false)
            yield* workspace.remove(info.id)
          }),
        { git: true },
      )
    }),
  )

  it.live("sync history sends the local sequence fence and replays returned events in workspace context", () => {
    const historyBodies: unknown[] = []
    let historySessionID: SessionID | undefined
    let historySession: SessionNs.Info | undefined
    let historyNextSeq = 0
    return Effect.gen(function* () {
      yield* HttpServer.serveEffect()(
        Effect.gen(function* () {
          const req = yield* HttpServerRequest.HttpServerRequest
          const bodyText = yield* req.text
          const url = new URL(req.url, "http://localhost")
          if (url.pathname === "/history/global/event") return HttpServerResponse.fromWeb(eventStreamResponse())
          if (url.pathname === "/history/sync/history") {
            historyBodies.push(bodyText ? JSON.parse(bodyText) : undefined)
            return HttpServerResponse.fromWeb(
              Response.json([
                {
                  id: `evt_${unique("history")}`,
                  aggregate_id: historySessionID!,
                  seq: historyNextSeq,
                  type: "session.updated.1",
                  data: { sessionID: historySessionID!, info: historySession! },
                },
              ]),
            )
          }
          return HttpServerResponse.text("unexpected", { status: 500 })
        }),
      )
      const url = yield* serverUrl()
      yield* provideTmpdirInstance(
        () =>
          Effect.gen(function* () {
            const workspace = yield* Workspace.Service
            const sessionSvc = yield* SessionNs.Service
            const instance = yield* requireInstance
            const captured = captureGlobalEvents()
            try {
              const type = unique("history-replay")
              const info = workspaceInfo(instance.project.id, type)
              yield* insertWorkspace(info)
              registerAdapter(instance.project.id, type, remoteAdapter(`${url}/history`).adapter)
              const session = yield* sessionSvc.create({ title: "before history" })
              yield* attachSessionToWorkspace(session.id, info.id)
              historySessionID = session.id
              historySession = { ...session, workspaceID: info.id, title: "from history" }
              historyNextSeq = ((yield* sessionSequence(session.id)) ?? -1) + 1

              yield* workspace.startWorkspaceSyncing(instance.project.id)

              yield* eventuallyEffect(
                Effect.gen(function* () {
                  expect((yield* sessionSvc.get(session.id).pipe(Effect.orDie)).title).toBe("from history")
                }),
              )
              expect(historyBodies).toEqual([{ [session.id]: historyNextSeq - 1 }])
              expect(
                captured.events.some(
                  (event) =>
                    event.workspace === info.id &&
                    event.payload.type === "session.updated" &&
                    event.payload.properties.sessionID === session.id &&
                    event.payload.properties.info.title === "from history",
                ),
              ).toBe(true)
              yield* workspace.remove(info.id)
            } finally {
              captured.dispose()
            }
          }),
        { git: true },
      )
    })
  })

  it.live("SSE forwards non-heartbeat events and ignores heartbeats", () =>
    Effect.gen(function* () {
      yield* HttpServer.serveEffect()(
        Effect.gen(function* () {
          const req = yield* HttpServerRequest.HttpServerRequest
          const url = new URL(req.url, "http://localhost")
          if (url.pathname === "/sse-forward/global/event")
            return HttpServerResponse.fromWeb(
              eventStreamResponse(
                [
                  { directory: "remote-dir", project: "remote-project", payload: { type: "server.heartbeat" } },
                  {
                    directory: "remote-dir",
                    project: "remote-project",
                    payload: { type: "custom.remote", properties: { ok: true } },
                  },
                ],
                false,
              ),
            )
          if (url.pathname === "/sse-forward/sync/history") return HttpServerResponse.fromWeb(Response.json([]))
          return HttpServerResponse.text("unexpected", { status: 500 })
        }),
      )
      const url = yield* serverUrl()
      yield* provideTmpdirInstance(
        () =>
          Effect.gen(function* () {
            const workspace = yield* Workspace.Service
            const sessionSvc = yield* SessionNs.Service
            const instance = yield* requireInstance
            const captured = captureGlobalEvents()
            try {
              const type = unique("sse-forward")
              const info = workspaceInfo(instance.project.id, type)
              yield* insertWorkspace(info)
              registerAdapter(instance.project.id, type, remoteAdapter(`${url}/sse-forward`).adapter)
              yield* attachSessionToWorkspace((yield* sessionSvc.create({})).id, info.id)

              yield* workspace.startWorkspaceSyncing(instance.project.id)

              yield* eventuallyEffect(
                Effect.sync(() =>
                  expect(
                    captured.events.some(
                      (event) => event.workspace === info.id && event.payload.type === "custom.remote",
                    ),
                  ).toBe(true),
                ),
              )
              expect(
                captured.events.some(
                  (event) => event.workspace === info.id && event.payload.type === "server.heartbeat",
                ),
              ).toBe(false)
              expect(
                captured.events.find((event) => event.workspace === info.id && event.payload.type === "custom.remote"),
              ).toMatchObject({
                directory: "remote-dir",
                project: "remote-project",
                payload: { properties: { ok: true } },
              })
              yield* workspace.remove(info.id)
            } finally {
              captured.dispose()
            }
          }),
        { git: true },
      )
    }),
  )

  it.live("SSE sync events are replayed and forwarded", () => {
    let sseSessionID: SessionID | undefined
    let sseSession: SessionNs.Info | undefined
    let sseNextSeq = 0
    return Effect.gen(function* () {
      yield* HttpServer.serveEffect()(
        Effect.gen(function* () {
          const req = yield* HttpServerRequest.HttpServerRequest
          const url = new URL(req.url, "http://localhost")
          if (url.pathname === "/sse-sync/global/event")
            return HttpServerResponse.fromWeb(
              eventStreamResponse(
                [
                  {
                    directory: "remote-dir",
                    project: "remote-project",
                    payload: {
                      type: "sync",
                      syncEvent: {
                        id: `evt_${unique("sse")}`,
                        aggregateID: sseSessionID!,
                        seq: sseNextSeq,
                        type: "session.updated.1",
                        data: { sessionID: sseSessionID!, info: sseSession! },
                      },
                    },
                  },
                ],
                false,
              ),
            )
          if (url.pathname === "/sse-sync/sync/history") return HttpServerResponse.fromWeb(Response.json([]))
          return HttpServerResponse.text("unexpected", { status: 500 })
        }),
      )
      const url = yield* serverUrl()
      yield* provideTmpdirInstance(
        () =>
          Effect.gen(function* () {
            const workspace = yield* Workspace.Service
            const sessionSvc = yield* SessionNs.Service
            const instance = yield* requireInstance
            const captured = captureGlobalEvents()
            try {
              const type = unique("sse-sync")
              const info = workspaceInfo(instance.project.id, type)
              yield* insertWorkspace(info)
              registerAdapter(instance.project.id, type, remoteAdapter(`${url}/sse-sync`).adapter)
              const session = yield* sessionSvc.create({ title: "before sse" })
              yield* attachSessionToWorkspace(session.id, info.id)
              sseSessionID = session.id
              sseSession = { ...session, workspaceID: info.id, title: "from sse" }
              sseNextSeq = ((yield* sessionSequence(session.id)) ?? -1) + 1

              yield* workspace.startWorkspaceSyncing(instance.project.id)

              yield* eventuallyEffect(
                Effect.gen(function* () {
                  expect((yield* sessionSvc.get(session.id).pipe(Effect.orDie)).title).toBe("from sse")
                }),
              )
              expect(
                captured.events.some(
                  (event) =>
                    event.workspace === info.id &&
                    event.payload.type === "sync" &&
                    event.payload.syncEvent.seq === sseNextSeq,
                ),
              ).toBe(true)
              yield* workspace.remove(info.id)
            } finally {
              captured.dispose()
            }
          }),
        { git: true },
      )
    })
  })
})

describe("workspace waitForSync", () => {
  it.instance(
    "returns immediately for an empty fence",
    () =>
      Effect.gen(function* () {
        const workspace = yield* Workspace.Service
        expect(yield* workspace.waitForSync(WorkspaceV2.ID.ascending("wrk_wait_empty"), {})).toBeUndefined()
      }),
    { git: true },
  )

  it.instance(
    "returns immediately when the stored sequence already satisfies the fence",
    () =>
      Effect.gen(function* () {
        const workspace = yield* Workspace.Service
        const sessionID = SessionID.descending("ses_wait_done")
        const { db } = yield* Database.Service
        yield* db.insert(EventSequenceTable).values({ aggregate_id: sessionID, seq: 4 }).run().pipe(Effect.orDie)

        expect(
          yield* workspace.waitForSync(WorkspaceV2.ID.ascending("wrk_wait_done"), { [sessionID]: 4 }),
        ).toBeUndefined()
        expect(
          yield* workspace.waitForSync(WorkspaceV2.ID.ascending("wrk_wait_done_2"), { [sessionID]: 3 }),
        ).toBeUndefined()
      }),
    { git: true },
  )

  it.instance(
    "waits until the database reaches the requested sequence and a workspace event arrives",
    () =>
      Effect.gen(function* () {
        const workspace = yield* Workspace.Service
        const workspaceID = WorkspaceV2.ID.ascending("wrk_wait_event")
        const sessionID = SessionID.descending("ses_wait_event")
        const { db } = yield* Database.Service
        yield* db.insert(EventSequenceTable).values({ aggregate_id: sessionID, seq: 1 }).run().pipe(Effect.orDie)

        yield* Effect.all(
          [
            workspace.waitForSync(workspaceID, { [sessionID]: 2 }),
            Effect.gen(function* () {
              yield* Effect.sleep("10 millis")
              yield* db
                .update(EventSequenceTable)
                .set({ seq: 2 })
                .where(eq(EventSequenceTable.aggregate_id, sessionID))
                .run()
                .pipe(Effect.orDie)
              GlobalBus.emit("event", { workspace: workspaceID, payload: { type: "anything" } })
            }),
          ],
          { concurrency: "unbounded" },
        )
      }),
    { git: true },
  )

  it.instance(
    "a sync event for a different workspace can also release the fence",
    () =>
      Effect.gen(function* () {
        const workspace = yield* Workspace.Service
        const workspaceID = WorkspaceV2.ID.ascending("wrk_wait_sync_any")
        const sessionID = SessionID.descending("ses_wait_sync_any")
        const { db } = yield* Database.Service
        yield* db.insert(EventSequenceTable).values({ aggregate_id: sessionID, seq: 0 }).run().pipe(Effect.orDie)

        yield* Effect.all(
          [
            workspace.waitForSync(workspaceID, { [sessionID]: 1 }),
            Effect.gen(function* () {
              yield* Effect.sleep("10 millis")
              yield* db
                .update(EventSequenceTable)
                .set({ seq: 1 })
                .where(eq(EventSequenceTable.aggregate_id, sessionID))
                .run()
                .pipe(Effect.orDie)
              GlobalBus.emit("event", {
                workspace: WorkspaceV2.ID.ascending("wrk_other_workspace"),
                payload: { type: "sync" },
              })
            }),
          ],
          { concurrency: "unbounded" },
        )
      }),
    { git: true },
  )

  it.instance(
    "rejects with the abort reason when aborted",
    () =>
      Effect.gen(function* () {
        const workspace = yield* Workspace.Service
        const abort = new AbortController()
        const reason = new Error("caller aborted")
        const fiber = yield* Effect.forkChild(
          workspace.waitForSync(
            WorkspaceV2.ID.ascending("wrk_wait_abort"),
            { [SessionID.descending("ses_wait_abort")]: 1 },
            abort.signal,
          ),
        )
        abort.abort(reason)

        expectExitContains(yield* Fiber.await(fiber), "WorkspaceSyncAbortedError", reason.message)
      }),
    { git: true },
  )

  it.instance(
    "times out with the requested fence in the error message",
    () =>
      Effect.gen(function* () {
        const workspace = yield* Workspace.Service
        const sessionID = SessionID.descending("ses_wait_timeout")
        expectExitContains(
          yield* Effect.exit(
            workspace.waitForSync(WorkspaceV2.ID.ascending("wrk_wait_timeout"), { [sessionID]: 1 }, undefined, 25),
          ),
          `Timed out waiting for sync fence: {"${sessionID}":1}`,
        )
      }),
    { git: true },
    7000,
  )
})
