import { describe, expect, test } from "bun:test"
import { $ } from "bun"
import { fileURLToPath } from "url"
import path from "path"
import { SqliteClient } from "@effect/sql-sqlite-bun"
import { EffectDrizzleSqlite } from "@novaclaw/effect-drizzle-sqlite"
import { DateTime, Effect, Layer } from "effect"
import { eq, inArray, sql } from "drizzle-orm"
import { DatabaseMigration } from "@novaclaw/core/database/migration"
import { migrations } from "@novaclaw/core/database/migration.gen"
import sessionUsageMigration from "@novaclaw/core/database/migration/20260510033149_session_usage"
import normalizeStoragePathsMigration from "@novaclaw/core/database/migration/20260601010001_normalize_storage_paths"
import sessionMessageProjectionOrderMigration from "@novaclaw/core/database/migration/20260603040000_session_message_projection_order"
import eventSourcedSessionInputMigration from "@novaclaw/core/database/migration/20260604172448_event_sourced_session_input"
import contextEpochAgentMigration from "@novaclaw/core/database/migration/20260605042240_add_context_epoch_agent"
import simplifyIntegrationCredentialsMigration from "@novaclaw/core/database/migration/20260611192811_lush_chimera"
import simplifySessionInputMigration from "@novaclaw/core/database/migration/20260622202450_simplify_session_input"
import dropLegacyMessagePartMigration from "@novaclaw/core/database/migration/20260708000000_drop_legacy_message_part"
import { AppNodeBuilder } from "@novaclaw/core/effect/app-node-builder"
import { LayerNode } from "@novaclaw/core/effect/layer-node"
import { EventV2 } from "@novaclaw/core/event"
import { ProjectV2 } from "@novaclaw/core/project"
import { AbsolutePath } from "@novaclaw/core/schema"
import { SessionSchema } from "@novaclaw/core/session/schema"
import { SessionTable } from "@novaclaw/core/session/sql"
import sessionMetadataMigration from "@novaclaw/core/database/migration/20260511173437_session-metadata"
import type { SqlClient as SqlClientService } from "effect/unstable/sql/SqlClient"
import { Database } from "@novaclaw/core/database/database"
import { SessionProjector } from "@novaclaw/core/session/projector"
import { SessionRecordEvent } from "@novaclaw/schema/session-record-event"
import { tmpdir } from "./fixture/tmpdir"

const run = <A, E>(effect: Effect.Effect<A, E, SqlClientService>) =>
  Effect.runPromise(
    effect.pipe(Effect.provide(SqliteClient.layer({ filename: ":memory:", disableWAL: true })), Effect.scoped),
  )

const makeDb = EffectDrizzleSqlite.makeWithDefaults()

describe("DatabaseMigration", () => {
  test("serializes concurrent embedded initialization for one database path", async () => {
    await using tmp = await tmpdir()
    const filename = path.join(tmp.path, "embedded.sqlite")
    const layers = [Database.layerFromPath(filename), Database.layerFromPath(filename)]

    await Effect.runPromise(
      Effect.all(
        layers.map((layer) => Effect.scoped(Layer.build(layer))),
        { concurrency: "unbounded" },
      ),
    )
  })
  if (process.platform === "linux") {
    test("declared schema has no ungenerated migrations", async () => {
      const result = await $`bun ${fileURLToPath(new URL("../script/migration.ts", import.meta.url))} --check`
        .quiet()
        .nothrow()
      expect(result.exitCode, result.stderr.toString()).toBe(0)
      expect(result.stdout.toString()).toContain("No schema changes, nothing to migrate")
    }, 30_000)
  }

  test("applies tracked migrations to an empty database", async () => {
    await run(
      Effect.gen(function* () {
        const db = yield* makeDb
        yield* DatabaseMigration.apply(db)

        expect(yield* db.get(sql`SELECT name FROM sqlite_master WHERE type = 'table' AND name = 'session'`)).toEqual({
          name: "session",
        })
        expect(
          yield* db.get(sql`SELECT name FROM sqlite_master WHERE type = 'table' AND name = 'session_input'`),
        ).toEqual({ name: "session_input" })
        expect(
          yield* db.get(sql`SELECT name FROM sqlite_master WHERE type = 'table' AND name = 'session_context_epoch'`),
        ).toEqual({ name: "session_context_epoch" })
        expect(
          yield* db.get(
            sql`SELECT name FROM pragma_table_info('session_context_epoch') WHERE name IN ('agent', 'replacement_seq', 'revision')`,
          ),
        ).toBeUndefined()
        expect(yield* db.get(sql`SELECT count(*) as count FROM migration`)).toEqual({ count: migrations.length })
        expect(
          yield* db.all(
            sql`SELECT name FROM sqlite_master WHERE type = 'index' AND name IN ('event_aggregate_seq_idx', 'event_aggregate_type_seq_idx', 'session_input_session_pending_seq_idx', 'session_input_session_pending_delivery_seq_idx', 'session_input_session_admitted_seq_idx', 'session_input_session_promoted_seq_idx', 'session_message_session_idx', 'session_message_session_type_idx', 'session_message_session_seq_idx', 'session_message_session_type_seq_idx', 'session_message_session_time_created_id_idx') ORDER BY name`,
          ),
        ).toEqual([
          { name: "event_aggregate_seq_idx" },
          { name: "event_aggregate_type_seq_idx" },
          { name: "session_input_session_admitted_seq_idx" },
          { name: "session_input_session_pending_delivery_seq_idx" },
          { name: "session_input_session_promoted_seq_idx" },
          { name: "session_message_session_seq_idx" },
          { name: "session_message_session_time_created_id_idx" },
          { name: "session_message_session_type_seq_idx" },
        ])
      }),
    )
  })

  test("rejects a non-empty database without a session table", async () => {
    await expect(
      run(
        Effect.gen(function* () {
          const db = yield* makeDb
          yield* db.run(sql`CREATE TABLE unrelated (id text PRIMARY KEY)`)
          yield* DatabaseMigration.apply(db)
        }),
      ),
    ).rejects.toThrow("Database is not empty and has no session table")
  })

  test("backfills existing Context Epoch rows to the build agent", async () => {
    await run(
      Effect.gen(function* () {
        const db = yield* makeDb
        yield* db.run(
          sql`CREATE TABLE session_context_epoch (session_id text PRIMARY KEY, baseline text NOT NULL, snapshot text NOT NULL, baseline_seq integer NOT NULL, replacement_seq integer, revision integer DEFAULT 0 NOT NULL)`,
        )
        yield* db.run(
          sql`INSERT INTO session_context_epoch (session_id, baseline, snapshot, baseline_seq) VALUES ('ses_existing', 'baseline', '{}', 0)`,
        )

        yield* DatabaseMigration.applyOnly(db, [contextEpochAgentMigration])

        expect(yield* db.get(sql`SELECT agent FROM session_context_epoch WHERE session_id = 'ses_existing'`)).toEqual({
          agent: "build",
        })
      }),
    )
  })

  test("keeps legacy credential fields nullable", async () => {
    await run(
      Effect.gen(function* () {
        const db = yield* makeDb
        yield* db.run(
          sql`CREATE TABLE credential (id text PRIMARY KEY, connector_id text NOT NULL, method_id text NOT NULL, label text NOT NULL, value text NOT NULL, active integer DEFAULT false NOT NULL, time_created integer NOT NULL, time_updated integer NOT NULL)`,
        )
        yield* db.run(
          sql`CREATE UNIQUE INDEX credential_connector_active_idx ON credential (connector_id) WHERE active = 1`,
        )
        yield* DatabaseMigration.applyOnly(db, [simplifyIntegrationCredentialsMigration])

        yield* db.run(
          sql`INSERT INTO credential (id, connector_id, method_id, label, value, active, time_created, time_updated) VALUES ('legacy', 'openai', 'oauth', 'Legacy', '{}', 1, 1, 1)`,
        )
        yield* db.run(
          sql`INSERT INTO credential (id, integration_id, label, value, time_created, time_updated) VALUES ('current', 'anthropic', 'Current', '{}', 2, 2)`,
        )
        expect(yield* db.get(sql`SELECT connector_id, method_id, active FROM credential WHERE id = 'current'`)).toEqual(
          { connector_id: null, method_id: null, active: null },
        )
      }),
    )
  })

  test("resets beta history and rebuilds event-sourced Session input storage", async () => {
    await run(
      Effect.gen(function* () {
        const db = yield* makeDb
        yield* db.run(sql`CREATE TABLE session (id text PRIMARY KEY, workspace_id text)`)
        yield* db.run(sql`CREATE TABLE workspace (id text PRIMARY KEY)`)
        yield* db.run(sql`CREATE TABLE message (id text PRIMARY KEY)`)
        yield* db.run(sql`CREATE TABLE part (id text PRIMARY KEY)`)
        yield* db.run(sql`CREATE TABLE event_sequence (aggregate_id text PRIMARY KEY, seq integer NOT NULL)`)
        yield* db.run(
          sql`CREATE TABLE event (id text PRIMARY KEY, aggregate_id text NOT NULL, seq integer NOT NULL, type text NOT NULL, data text NOT NULL)`,
        )
        yield* db.run(sql`CREATE INDEX event_aggregate_seq_idx ON event (aggregate_id, seq)`)
        yield* db.run(sql`CREATE INDEX event_aggregate_type_seq_idx ON event (aggregate_id, type, seq)`)
        yield* db.run(
          sql`CREATE TABLE session_message (id text PRIMARY KEY, session_id text NOT NULL, type text NOT NULL, seq integer NOT NULL, time_created integer NOT NULL, time_updated integer NOT NULL, data text NOT NULL)`,
        )
        yield* db.run(sql`CREATE INDEX session_message_session_seq_idx ON session_message (session_id, seq)`)
        yield* db.run(
          sql`CREATE TABLE session_input (seq integer PRIMARY KEY AUTOINCREMENT, id text NOT NULL UNIQUE, session_id text NOT NULL, prompt text NOT NULL, delivery text NOT NULL, promoted_seq integer, time_created integer NOT NULL)`,
        )
        yield* db.run(
          sql`CREATE INDEX session_input_session_pending_delivery_seq_idx ON session_input (session_id, promoted_seq, delivery, seq)`,
        )
        yield* db.run(sql`INSERT INTO session (id, workspace_id) VALUES ('session', 'wrk_old')`)
        yield* db.run(sql`INSERT INTO workspace (id) VALUES ('wrk_old')`)
        yield* db.run(sql`INSERT INTO message (id) VALUES ('message')`)
        yield* db.run(sql`INSERT INTO part (id) VALUES ('part')`)
        yield* db.run(sql`INSERT INTO event_sequence (aggregate_id, seq) VALUES ('session', 0)`)
        yield* db.run(
          sql`INSERT INTO event (id, aggregate_id, seq, type, data) VALUES ('evt_old', 'session', 0, 'old.1', '{}')`,
        )
        yield* db.run(
          sql`INSERT INTO session_message (id, session_id, type, seq, time_created, time_updated, data) VALUES ('msg_old', 'session', 'user', 0, 1, 1, '{}')`,
        )
        yield* db.run(
          sql`INSERT INTO session_input (id, session_id, prompt, delivery, time_created) VALUES ('msg_pending', 'session', '{}', 'steer', 1)`,
        )

        yield* DatabaseMigration.applyOnly(db, [eventSourcedSessionInputMigration])

        expect(yield* db.all(sql`SELECT id, workspace_id FROM session`)).toEqual([
          { id: "session", workspace_id: null },
        ])
        expect(yield* db.all(sql`SELECT id FROM workspace`)).toEqual([])
        expect(yield* db.all(sql`SELECT id FROM message`)).toEqual([{ id: "message" }])
        expect(yield* db.all(sql`SELECT id FROM part`)).toEqual([{ id: "part" }])
        expect(yield* db.all(sql`SELECT id FROM event`)).toEqual([])
        expect(yield* db.all(sql`SELECT aggregate_id FROM event_sequence`)).toEqual([])
        expect(yield* db.all(sql`SELECT id FROM session_message`)).toEqual([])
        expect(yield* db.all(sql`SELECT id FROM session_input`)).toEqual([])
        expect(
          (yield* db.all<{ name: string }>(sql`PRAGMA table_info(session_input)`)).map((column) => column.name),
        ).toEqual(["id", "session_id", "prompt", "delivery", "admitted_seq", "promoted_seq", "time_created"])
        expect(
          (yield* db.all<{ name: string; unique: number }>(sql`PRAGMA index_list(session_message)`)).find(
            (index) => index.name === "session_message_session_seq_idx",
          ),
        ).toMatchObject({ unique: 1 })
        expect(
          (yield* db.all<{ name: string; unique: number }>(sql`PRAGMA index_list(event)`)).find(
            (index) => index.name === "event_aggregate_seq_idx",
          ),
        ).toMatchObject({ unique: 1 })
        expect(
          (yield* db.all<{ name: string; unique: number }>(sql`PRAGMA index_list(session_input)`)).filter((index) =>
            ["session_input_session_admitted_seq_idx", "session_input_session_promoted_seq_idx"].includes(index.name),
          ),
        ).toEqual([
          expect.objectContaining({ name: "session_input_session_promoted_seq_idx", unique: 1 }),
          expect.objectContaining({ name: "session_input_session_admitted_seq_idx", unique: 1 }),
        ])
      }),
    )
  })

  test("preserves canonical V1 state and restarts its event stream", async () => {
    await run(
      Effect.gen(function* () {
        const db = yield* makeDb
        yield* db.run(sql`PRAGMA foreign_keys = ON`)
        yield* DatabaseMigration.apply(db)
        yield* db.run(
          sql`INSERT INTO workspace (id, type, origin, time_used) VALUES ('workspace', 'local', 'global', 1)`,
        )
        yield* db.run(
          sql`INSERT INTO session (id, workspace_id, slug, directory, title, version, time_created, time_updated) VALUES ('session', 'workspace', 'session', '/project', 'Before', 'test', 1, 1)`,
        )
        // F1g: the legacy message/part tables are dropped by the full chain, so canonical V1 state
        // is witnessed by the session row + session_message/input/context_epoch instead.
        yield* db.run(sql`INSERT INTO event_sequence (aggregate_id, seq) VALUES ('session', 9)`)
        yield* db.run(
          sql`INSERT INTO event (id, aggregate_id, seq, type, data) VALUES ('event', 'session', 9, 'session.updated.1', '{}')`,
        )
        yield* db.run(
          sql`INSERT INTO session_input (id, session_id, prompt, delivery, admitted_seq, time_created) VALUES ('input', 'session', '{}', 'steer', 9, 1)`,
        )
        yield* db.run(
          sql`INSERT INTO session_message (id, session_id, type, seq, time_created, time_updated, data) VALUES ('projected', 'session', 'user', 9, 1, 1, '{}')`,
        )
        yield* db.run(
          sql`INSERT INTO session_context_epoch (session_id, baseline, snapshot, baseline_seq) VALUES ('session', 'baseline', '{}', 9)`,
        )
        yield* db.run(sql`DELETE FROM migration WHERE id = ${simplifySessionInputMigration.id}`)
        yield* DatabaseMigration.applyOnly(db, [simplifySessionInputMigration])

        const database = Layer.succeed(Database.Service, { db })
        yield* EventV2.Service.use((service) =>
          service.publish(SessionRecordEvent.Updated, {
            sessionID: SessionSchema.ID.make("session"),
            info: {
              id: SessionSchema.ID.make("session"),
              slug: "session",
              location: { directory: AbsolutePath.make("/project") },
              title: "After",
              version: "test",
              cost: 0,
              tokens: { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
              time: { created: DateTime.makeUnsafe(1), updated: DateTime.makeUnsafe(2) },
            },
          }),
        ).pipe(
          Effect.provide(
            AppNodeBuilder.build(LayerNode.group([EventV2.node, SessionProjector.node]), [[Database.node, database]]),
          ),
        )

        expect(
          yield* db.get(sql`
            SELECT
              (SELECT title FROM session WHERE id = 'session') AS title,
              (SELECT workspace_id FROM session WHERE id = 'session') AS workspaceID,
              (SELECT COUNT(*) FROM workspace) AS workspaces,
              (SELECT COUNT(*) FROM session_input) AS sessionInputs,
              (SELECT COUNT(*) FROM session_message) AS sessionMessages,
              (SELECT COUNT(*) FROM session_context_epoch) AS contextEpochs,
              (SELECT seq FROM event_sequence WHERE aggregate_id = 'session') AS seq,
              (SELECT type FROM event WHERE aggregate_id = 'session') AS eventType
          `),
        ).toEqual({
          title: "After",
          workspaceID: null,
          workspaces: 0,
          sessionInputs: 0,
          sessionMessages: 0,
          contextEpochs: 0,
          seq: 0,
          eventType: "session.updated.2",
        })
      }),
    )
  })

  // F1g P5 gate: the drop migration removes the legacy message/part/session_share tables while
  // leaving session-LEVEL data intact (owner decision ①: message rows lapse, no backfill).
  test("drops legacy message/part/session_share while preserving the session row", async () => {
    await run(
      Effect.gen(function* () {
        const db = yield* makeDb
        // Mimic the pre-drop on-disk shape: a session plus its legacy transcript + share row.
        yield* db.run(sql`CREATE TABLE session (id text PRIMARY KEY, title text NOT NULL)`)
        yield* db.run(
          sql`CREATE TABLE message (id text PRIMARY KEY, session_id text NOT NULL, time_created integer NOT NULL, time_updated integer NOT NULL, data text NOT NULL)`,
        )
        yield* db.run(
          sql`CREATE TABLE part (id text PRIMARY KEY, message_id text NOT NULL, session_id text NOT NULL, time_created integer NOT NULL, time_updated integer NOT NULL, data text NOT NULL)`,
        )
        yield* db.run(
          sql`CREATE TABLE session_share (session_id text PRIMARY KEY, id text NOT NULL, secret text NOT NULL, url text NOT NULL, time_created integer NOT NULL, time_updated integer NOT NULL)`,
        )
        yield* db.run(sql`CREATE INDEX message_session_time_created_id_idx ON message (session_id, time_created, id)`)
        yield* db.run(sql`CREATE INDEX part_message_id_id_idx ON part (message_id, id)`)
        yield* db.run(sql`CREATE INDEX part_session_idx ON part (session_id)`)
        yield* db.run(sql`INSERT INTO session (id, title) VALUES ('session', 'Kept')`)
        yield* db.run(sql`INSERT INTO message (id, session_id, time_created, time_updated, data) VALUES ('m', 'session', 1, 1, '{}')`)
        yield* db.run(
          sql`INSERT INTO part (id, message_id, session_id, time_created, time_updated, data) VALUES ('p', 'm', 'session', 1, 1, '{}')`,
        )
        yield* db.run(
          sql`INSERT INTO session_share (session_id, id, secret, url, time_created, time_updated) VALUES ('session', 's', 'x', 'u', 1, 1)`,
        )

        yield* DatabaseMigration.applyOnly(db, [dropLegacyMessagePartMigration])

        const tableNames = (
          yield* db.all<{ name: string }>(
            sql`SELECT name FROM sqlite_master WHERE type = 'table' AND name IN ('message', 'part', 'session_share', 'session')`,
          )
        ).map((row) => row.name)
        expect(tableNames).toEqual(["session"])
        // Session-level data survives; the legacy transcript lapses with its tables.
        expect(yield* db.all(sql`SELECT id, title FROM session`)).toEqual([{ id: "session", title: "Kept" }])
        // Re-running is a no-op (DROP ... IF EXISTS).
        yield* DatabaseMigration.applyOnly(db, [dropLegacyMessagePartMigration])
      }),
    )
  })

  test("resets incompatible projected Session messages before adding sequence order", async () => {
    await run(
      Effect.gen(function* () {
        const db = yield* makeDb
        yield* db.run(sql`CREATE TABLE session (id text PRIMARY KEY)`)
        yield* db.run(
          sql`CREATE TABLE message (id text PRIMARY KEY, session_id text NOT NULL, time_created integer NOT NULL, time_updated integer NOT NULL, data text NOT NULL)`,
        )
        yield* db.run(
          sql`CREATE TABLE part (id text PRIMARY KEY, message_id text NOT NULL, session_id text NOT NULL, time_created integer NOT NULL, time_updated integer NOT NULL, data text NOT NULL)`,
        )
        yield* db.run(sql`CREATE TABLE event (id text PRIMARY KEY, seq integer NOT NULL)`)
        yield* db.run(
          sql`CREATE TABLE session_message (id text PRIMARY KEY, session_id text NOT NULL, type text NOT NULL, time_created integer NOT NULL, time_updated integer NOT NULL, data text NOT NULL)`,
        )
        yield* db.run(
          sql`CREATE INDEX session_message_session_time_created_id_idx ON session_message (session_id, time_created, id)`,
        )
        yield* db.run(
          sql`CREATE INDEX session_message_session_type_time_created_id_idx ON session_message (session_id, type, time_created, id)`,
        )
        yield* db.run(sql`INSERT INTO session (id) VALUES ('session')`)
        yield* db.run(
          sql`INSERT INTO message (id, session_id, time_created, time_updated, data) VALUES ('legacy_message', 'session', 1, 1, '{"role":"user"}')`,
        )
        yield* db.run(
          sql`INSERT INTO part (id, message_id, session_id, time_created, time_updated, data) VALUES ('legacy_part', 'legacy_message', 'session', 1, 1, '{"type":"text","text":"hello"}')`,
        )
        yield* db.run(
          sql`INSERT INTO session_message (id, session_id, type, time_created, time_updated, data) VALUES ('stale_projection', 'session', 'user', 1, 1, '{}')`,
        )

        yield* DatabaseMigration.applyOnly(db, [sessionMessageProjectionOrderMigration])

        expect(yield* db.all(sql`SELECT id, session_id, data FROM message`)).toEqual([
          { id: "legacy_message", session_id: "session", data: '{"role":"user"}' },
        ])
        expect(yield* db.all(sql`SELECT id, message_id, session_id, data FROM part`)).toEqual([
          {
            id: "legacy_part",
            message_id: "legacy_message",
            session_id: "session",
            data: '{"type":"text","text":"hello"}',
          },
        ])
        expect(yield* db.all(sql`SELECT id FROM session_message`)).toEqual([])

        yield* db.run(
          sql`INSERT INTO session_message (id, session_id, type, seq, time_created, time_updated, data) VALUES ('fresh_projection', 'session', 'user', 7, 2, 2, '{}')`,
        )
        expect(yield* db.get(sql`SELECT id, seq FROM session_message`)).toEqual({ id: "fresh_projection", seq: 7 })
      }),
    )
  })

  test("runs session usage backfill in order with schema changes", async () => {
    await run(
      Effect.gen(function* () {
        const db = yield* makeDb
        yield* db.run(sql`CREATE TABLE session (id text PRIMARY KEY, time_updated integer NOT NULL)`)
        yield* db.run(sql`CREATE TABLE message (id text PRIMARY KEY, session_id text NOT NULL, data text NOT NULL)`)
        yield* db.run(sql`INSERT INTO session (id, time_updated) VALUES ('session_1', 1)`)
        yield* db.run(
          sql`INSERT INTO message (id, session_id, data) VALUES ('message_1', 'session_1', '{"role":"assistant","cost":1.25,"tokens":{"input":2,"output":3,"reasoning":4,"cache":{"read":5,"write":6}}}')`,
        )

        yield* DatabaseMigration.applyOnly(db, [sessionUsageMigration])

        expect(
          yield* db.get(
            sql`SELECT cost, tokens_input, tokens_output, tokens_reasoning, tokens_cache_read, tokens_cache_write FROM session WHERE id = 'session_1'`,
          ),
        ).toEqual({
          cost: 1.25,
          tokens_input: 2,
          tokens_output: 3,
          tokens_reasoning: 4,
          tokens_cache_read: 5,
          tokens_cache_write: 6,
        })
      }),
    )
  })

  test("normalizes Windows storage paths and leaves POSIX paths untouched", async () => {
    await run(
      Effect.gen(function* () {
        const db = yield* makeDb
        yield* db.run(sql`CREATE TABLE project (id text PRIMARY KEY, worktree text NOT NULL, sandboxes text NOT NULL)`)
        yield* db.run(sql`CREATE TABLE session (id text PRIMARY KEY, directory text NOT NULL, path text)`)
        // Windows-shaped rows (drive + backslash) must be normalized.
        yield* db.run(
          sql`INSERT INTO project (id, worktree, sandboxes) VALUES (${"win"}, ${"C:\\Repo\\Thing"}, ${JSON.stringify([
            "C:\\Repo\\Thing\\sandbox",
          ])})`,
        )
        yield* db.run(
          sql`INSERT INTO session (id, directory, path) VALUES (${"win"}, ${"C:\\Repo\\Thing\\packages\\api"}, ${"packages\\api"})`,
        )
        // UNC worktrees and their sandboxes must normalize too (not just drive paths).
        yield* db.run(
          sql`INSERT INTO project (id, worktree, sandboxes) VALUES (${"unc"}, ${"\\\\server\\share"}, ${JSON.stringify([
            "\\\\server\\share\\sandbox",
          ])})`,
        )
        // The "/" worktree sentinel and POSIX paths (including a pathological
        // backslash in a POSIX filename) must survive byte-for-byte.
        yield* db.run(sql`INSERT INTO project (id, worktree, sandboxes) VALUES (${"global"}, ${"/"}, ${"[]"})`)
        yield* db.run(
          sql`INSERT INTO session (id, directory, path) VALUES (${"posix"}, ${"/home/me/we\\ird"}, ${"src\\weird"})`,
        )

        yield* DatabaseMigration.applyOnly(db, [normalizeStoragePathsMigration])

        expect(yield* db.get(sql`SELECT worktree, sandboxes FROM project WHERE id = 'win'`)).toEqual({
          worktree: "C:/Repo/Thing",
          sandboxes: JSON.stringify(["C:/Repo/Thing/sandbox"]),
        })
        expect(yield* db.get(sql`SELECT directory, path FROM session WHERE id = 'win'`)).toEqual({
          directory: "C:/Repo/Thing/packages/api",
          path: "packages/api",
        })
        expect(yield* db.get(sql`SELECT worktree, sandboxes FROM project WHERE id = 'unc'`)).toEqual({
          worktree: "//server/share",
          sandboxes: JSON.stringify(["//server/share/sandbox"]),
        })
        expect(yield* db.get(sql`SELECT worktree FROM project WHERE id = 'global'`)).toEqual({ worktree: "/" })
        expect(yield* db.get(sql`SELECT directory, path FROM session WHERE id = 'posix'`)).toEqual({
          directory: "/home/me/we\\ird",
          path: "src\\weird",
        })
      }),
    )
  })

  test("imports existing drizzle migration state", async () => {
    await run(
      Effect.gen(function* () {
        const db = yield* makeDb
        yield* db.run(
          sql`CREATE TABLE __drizzle_migrations (id INTEGER PRIMARY KEY, hash text NOT NULL, created_at numeric, name text, applied_at TEXT)`,
        )
        yield* db.run(sql`
          INSERT INTO __drizzle_migrations (hash, created_at, name, applied_at)
          VALUES ('hash', 1, '20260127222353_familiar_lady_ursula', ${new Date().toISOString()})
        `)

        yield* DatabaseMigration.applyOnly(db, [])

        expect(yield* db.get(sql`SELECT id FROM migration`)).toEqual({ id: "20260127222353_familiar_lady_ursula" })
      }),
    )
  })

  test("does not replay a migrated session metadata column", async () => {
    await run(
      Effect.gen(function* () {
        const db = yield* makeDb
        yield* db.run(sql`CREATE TABLE session (id text PRIMARY KEY, metadata text)`)
        yield* db.run(
          sql`CREATE TABLE __drizzle_migrations (id INTEGER PRIMARY KEY, hash text NOT NULL, created_at numeric, name text, applied_at TEXT)`,
        )
        yield* db.run(sql`
          INSERT INTO __drizzle_migrations (hash, created_at, name, applied_at)
          VALUES ('hash', 1, '20260511173437_session-metadata', ${new Date().toISOString()})
        `)

        yield* DatabaseMigration.applyOnly(db, [sessionMetadataMigration])

        expect(yield* db.all(sql`SELECT id FROM migration`)).toEqual([{ id: "20260511173437_session-metadata" }])
      }),
    )
  })

  test("accepts the temporary replacement session metadata migration id", async () => {
    await run(
      Effect.gen(function* () {
        const db = yield* makeDb
        yield* db.run(sql`CREATE TABLE session (id text PRIMARY KEY, metadata text)`)
        yield* db.run(sql`CREATE TABLE migration (id TEXT PRIMARY KEY, time_completed INTEGER NOT NULL)`)
        yield* db.run(sql`INSERT INTO migration (id, time_completed) VALUES ('20260530232709_lovely_romulus', 1)`)

        yield* DatabaseMigration.applyOnly(db, [sessionMetadataMigration])

        expect(yield* db.all(sql`SELECT id FROM migration ORDER BY id`)).toEqual([
          { id: "20260511173437_session-metadata" },
          { id: "20260530232709_lovely_romulus" },
        ])
      }),
    )
  })

  test("skips drizzle import when migration table already has state", async () => {
    await run(
      Effect.gen(function* () {
        const db = yield* makeDb
        yield* db.run(sql`CREATE TABLE migration (id TEXT PRIMARY KEY, time_completed INTEGER NOT NULL)`)
        yield* db.run(sql`INSERT INTO migration (id, time_completed) VALUES ('existing', 1)`)
        yield* db.run(
          sql`CREATE TABLE __drizzle_migrations (id INTEGER PRIMARY KEY, hash text NOT NULL, created_at numeric, name text, applied_at TEXT)`,
        )
        yield* db.run(sql`
          INSERT INTO __drizzle_migrations (hash, created_at, name, applied_at)
          VALUES ('hash', 1, '20260127222353_familiar_lady_ursula', ${new Date().toISOString()})
        `)

        yield* DatabaseMigration.applyOnly(db, [])

        expect(yield* db.all(sql`SELECT id FROM migration ORDER BY id`)).toEqual([{ id: "existing" }])
      }),
    )
  })
})
