import { test, mock } from 'node:test';
import assert from 'node:assert/strict';
import { createRequire } from 'node:module';
import { execFileSync } from 'node:child_process';
import { fileURLToPath } from 'node:url';
import { mkdirSync, rmSync, writeFileSync } from 'node:fs';
import { tmpdir } from 'node:os';
import { join } from 'node:path';

const require = createRequire(import.meta.url);

// The app main process is now an ES module. It runs side-effectfully on import
// (registers ipcMain handlers, opens windows, etc.) and has no exports, so we
// mock its ESM dependencies with node:test's `mock.module` and load it via a
// cache-busted dynamic import.
//
// `mock.module` keys mocks by the *resolved* module URL. The app's dependencies
// live in `app/node_modules`, so they are NOT resolvable from this test file's
// directory, and bare specifiers ('electron', ...) would either fail to resolve
// here or resolve to the wrong ESM entry (e.g. chokidar exposes esm/index.js via
// its "exports" map, which differs from require.resolve's CJS entry). We instead
// resolve each bare specifier exactly as the main module sees it (ESM resolution
// relative to the main module's directory) and mock that URL. Relative deps are
// resolved against the main module URL directly.
const mainUrl = new URL('../app/src/main/index.ts', import.meta.url);
const mainPath = fileURLToPath(mainUrl);
const mainDir = fileURLToPath(new URL('.', mainUrl));

function esmResolve(specifier) {
  return execFileSync(
    process.execPath,
    ['--input-type=module', '-e', `process.stdout.write(import.meta.resolve(${JSON.stringify(specifier)}))`],
    { cwd: mainDir, encoding: 'utf8' },
  ).trim();
}

const ELECTRON_URL = esmResolve('electron');
const DATABASE_URL = esmResolve('better-sqlite3');
const CHOKIDAR_URL = esmResolve('chokidar');
const INDEXER_URL = new URL('./indexer.ts', mainUrl).href;
const INDEXER_SERVICE_URL = new URL('./indexer-service.ts', mainUrl).href;
const INDEXER_WORKER_URL = new URL('./indexer-worker-client.ts', mainUrl).href;

let importCounter = 0;

// Registers the given [specifier, options] mocks and returns a restore fn.
function registerMocks(defs) {
  const contexts = defs.map(([spec, opts]) => mock.module(spec, opts));
  return () => {
    for (const ctx of contexts) ctx.restore();
    mock.reset();
  };
}

// Fresh evaluation of the main module every call (cache-busted query string).
async function importMain() {
  await import(`${mainUrl.href}?t=${++importCounter}-${Date.now()}`);
  await new Promise(resolve => setImmediate(resolve));
}

// Electron named-export namespace. ESM named imports are validated at load time,
// so every export the app imports ('app', 'BrowserWindow', 'ipcMain', 'clipboard',
// 'dialog', 'nativeImage', 'shell') must be present, even if unused by a test.
function electronNamespace({ app, BrowserWindow, ipcMain }) {
  return {
    app: app ?? { whenReady: () => Promise.resolve(), on() {}, quit() {} },
    BrowserWindow,
    ipcMain: ipcMain ?? { handle() {} },
    clipboard: {},
    dialog: {},
    nativeImage: {},
    shell: {},
  };
}

function noopChokidar() {
  return { watch: () => ({ on() { return this; }, close() {} }) };
}

function defaultIndexerService() {
  return {
    createIndexerService: () => ({
      start() {},
      stop() {},
      idle: async () => {},
      runBuildNow() { return Promise.resolve(); },
    }),
  };
}

function defaultIndexerWorkerClient() {
  return {
    createWorkerBuildIndex: () => ({
      buildIndex: async () => ({ files: 0, affectedSessionIds: [] }),
      stop() {},
    }),
  };
}

async function loadMainForWindowFlags(flags) {
  const originalArgv = process.argv;
  const originalHome = process.env.HOME;
  const home = join(tmpdir(), `obelisk-window-flags-${Date.now()}-${Math.random()}`);
  mkdirSync(join(home, '.obelisk'), { recursive: true });
  writeFileSync(join(home, '.obelisk', 'obelisk.sqlite'), '');
  process.env.HOME = home;
  process.argv = [originalArgv[0] || 'node', originalArgv[1] || 'electron', ...flags];

  const windows = [];

  class FakeDatabase {
    pragma() {}
    close() {}
    prepare() {
      return { get: () => null, all: () => [], run: () => ({}) };
    }
  }

  class FakeBrowserWindow {
    constructor(options) {
      this.options = options;
      this.loadedURL = null;
      this.loadedFile = null;
      this.devToolsOpened = false;
      this.webContents = {
        on() {},
        setZoomLevel() {},
        openDevTools: () => { this.devToolsOpened = true; },
        send() {},
      };
      windows.push(this);
    }
    loadFile(filePath) { this.loadedFile = filePath; }
    loadURL(url) { this.loadedURL = url; return Promise.resolve(); }
    close() {}
    static getAllWindows() { return windows; }
    static fromWebContents() { return null; }
  }

  const restore = registerMocks([
    [ELECTRON_URL, { namedExports: electronNamespace({ BrowserWindow: FakeBrowserWindow }) }],
    [DATABASE_URL, { defaultExport: FakeDatabase }],
    [CHOKIDAR_URL, { defaultExport: noopChokidar() }],
    [INDEXER_URL, { namedExports: { writeHeartbeat() {} } }],
    [INDEXER_SERVICE_URL, { namedExports: defaultIndexerService() }],
    [INDEXER_WORKER_URL, { namedExports: defaultIndexerWorkerClient() }],
  ]);

  try {
    await importMain();
    return windows;
  } finally {
    restore();
    process.argv = originalArgv;
    process.env.HOME = originalHome;
    rmSync(home, { recursive: true, force: true });
  }
}

test('dev mode does not open DevTools unless explicitly requested', async () => {
  const packagedWindows = await loadMainForWindowFlags([]);
  assert.equal(packagedWindows.length, 1);
  assert.equal(packagedWindows[0].loadedURL, null);
  assert.equal(packagedWindows[0].options.webPreferences.devTools, false);
  assert.equal(packagedWindows[0].devToolsOpened, false);

  const devWindows = await loadMainForWindowFlags(['--dev']);
  assert.equal(devWindows.length, 1);
  assert.equal(devWindows[0].loadedURL, 'http://localhost:5173');
  assert.equal(devWindows[0].options.webPreferences.devTools, true);
  assert.equal(devWindows[0].devToolsOpened, false);

  const devtoolsWindows = await loadMainForWindowFlags(['--dev', '--devtools']);
  assert.equal(devtoolsWindows.length, 1);
  assert.equal(devtoolsWindows[0].loadedURL, 'http://localhost:5173');
  assert.equal(devtoolsWindows[0].devToolsOpened, true);
});

test('main process watches Codex sessions directory instead of Codex root', async () => {
  const originalHome = process.env.HOME;
  const home = join(tmpdir(), `obelisk-main-watch-dirs-${Date.now()}`);
  const claudeDir = join(home, '.claude');
  const codexDir = join(home, '.codex');
  mkdirSync(join(claudeDir, 'projects'), { recursive: true });
  mkdirSync(join(codexDir, 'sessions'), { recursive: true });
  mkdirSync(join(home, '.obelisk'), { recursive: true });
  writeFileSync(join(home, '.obelisk', 'obelisk.sqlite'), '');
  process.env.HOME = home;

  const serviceOptions = [];

  class FakeDatabase {
    pragma() {}
    close() {}
    prepare() {
      return { get: () => null, all: () => [], run: () => ({}) };
    }
  }

  class FakeBrowserWindow {
    constructor() {
      this.webContents = { on() {}, setZoomLevel() {}, openDevTools() {}, send() {} };
    }
    loadFile() {}
    loadURL() {}
    close() {}
    static getAllWindows() { return []; }
    static fromWebContents() { return null; }
  }

  const restore = registerMocks([
    [ELECTRON_URL, { namedExports: electronNamespace({ BrowserWindow: FakeBrowserWindow }) }],
    [DATABASE_URL, { defaultExport: FakeDatabase }],
    [CHOKIDAR_URL, { defaultExport: noopChokidar() }],
    [INDEXER_URL, { namedExports: { writeHeartbeat() {} } }],
    [INDEXER_SERVICE_URL, {
      namedExports: {
        createIndexerService: (options) => {
          serviceOptions.push(options);
          return {
            start() {},
            stop() {},
            idle: async () => {},
            runBuildNow() { return Promise.resolve(); },
          };
        },
      },
    }],
    [INDEXER_WORKER_URL, { namedExports: defaultIndexerWorkerClient() }],
  ]);

  try {
    await importMain();

    assert.equal(serviceOptions.length, 1);
    assert.deepEqual(serviceOptions[0].watchDirs, [
      join(claudeDir, 'projects'),
      join(codexDir, 'sessions'),
    ]);
    assert.equal(serviceOptions[0].watchDirs.includes(codexDir), false);
  } finally {
    restore();
    process.env.HOME = originalHome;
    rmSync(home, { recursive: true, force: true });
  }
});

test('session IPC hides Codex rows by default and supports explicit source opt-in', async () => {
  const originalHome = process.env.HOME;
  const home = join(tmpdir(), `obelisk-main-source-filter-${Date.now()}`);
  mkdirSync(join(home, '.obelisk'), { recursive: true });
  writeFileSync(join(home, '.obelisk', 'obelisk.sqlite'), '');
  process.env.HOME = home;

  const ipcHandlers = new Map();
  const queries = [];

  class FakeDatabase {
    pragma() {}
    close() {}
    prepare(sql) {
      return {
        all: (...params) => {
          queries.push({ sql, params });
          return [];
        },
        get: (...params) => {
          queries.push({ sql, params });
          return null;
        },
        run: () => ({}),
      };
    }
  }

  class FakeBrowserWindow {
    constructor() {
      this.webContents = { on() {}, setZoomLevel() {}, openDevTools() {}, send() {} };
    }
    loadFile() {}
    loadURL() {}
    close() {}
    static getAllWindows() { return []; }
    static fromWebContents() { return null; }
  }

  const restore = registerMocks([
    [ELECTRON_URL, {
      namedExports: electronNamespace({
        BrowserWindow: FakeBrowserWindow,
        ipcMain: {
          handle(channel, handler) {
            ipcHandlers.set(channel, handler);
          },
        },
      }),
    }],
    [DATABASE_URL, { defaultExport: FakeDatabase }],
    [CHOKIDAR_URL, { defaultExport: noopChokidar() }],
    [INDEXER_URL, { namedExports: { writeHeartbeat() {} } }],
    [INDEXER_SERVICE_URL, { namedExports: defaultIndexerService() }],
    [INDEXER_WORKER_URL, { namedExports: defaultIndexerWorkerClient() }],
  ]);

  try {
    await importMain();

    ipcHandlers.get('db:getSessions')(null, {});
    assert.match(queries.at(-1).sql, /COALESCE\(source, 'claude'\) = 'claude'/);

    ipcHandlers.get('db:getProjects')(null, {});
    assert.match(queries.at(-1).sql, /COALESCE\(source, 'claude'\) = 'claude'/);

    ipcHandlers.get('db:getSessions')(null, { includeCodex: true });
    assert.doesNotMatch(queries.at(-1).sql, /COALESCE\(source, 'claude'\) = 'claude'/);

    ipcHandlers.get('db:getSessions')(null, { source: 'codex' });
    assert.match(queries.at(-1).sql, /COALESCE\(source, 'claude'\) = \?/);
    assert.ok(queries.at(-1).params.includes('codex'));

    await ipcHandlers.get('settings:get')();
    assert.ok(
      queries.some(q => /COUNT\(\*\) as c FROM sessions WHERE COALESCE\(source, 'claude'\) = 'claude'/.test(q.sql)),
    );
    assert.ok(
      queries.some(q => /MAX\(started_at\) as t FROM sessions WHERE COALESCE\(source, 'claude'\) = 'claude'/.test(q.sql)),
    );
  } finally {
    restore();
    process.env.HOME = originalHome;
    rmSync(home, { recursive: true, force: true });
  }
});

test('main process migrates an existing app database before source-filtered IPC queries', async () => {
  const originalHome = process.env.HOME;
  const home = join(tmpdir(), `obelisk-main-db-migration-${Date.now()}`);
  const obeliskDir = join(home, '.obelisk');
  mkdirSync(obeliskDir, { recursive: true });
  process.env.HOME = home;

  const { DatabaseSync } = require('node:sqlite');
  const dbPath = join(obeliskDir, 'obelisk.sqlite');
  const legacy = new DatabaseSync(dbPath);
  legacy.exec(`
    CREATE TABLE sessions (
      id TEXT PRIMARY KEY, title TEXT, project TEXT, project_path TEXT,
      started_at TEXT, ended_at TEXT, git_branch TEXT, version TEXT,
      message_count INTEGER DEFAULT 0, jsonl_path TEXT
    );
    CREATE TABLE messages (
      uuid TEXT PRIMARY KEY, session_id TEXT, type TEXT, parent_uuid TEXT,
      timestamp TEXT, role TEXT, text TEXT, content_type TEXT,
      is_meta INTEGER DEFAULT 0, model TEXT,
      is_sidechain INTEGER DEFAULT 0, agent_id TEXT,
      input_tokens INTEGER, output_tokens INTEGER,
      cwd TEXT, skill TEXT, turn_duration_ms INTEGER
    );
    CREATE TABLE memories (
      id TEXT PRIMARY KEY, session_id TEXT, project TEXT,
      message_start TEXT, message_end TEXT,
      path TEXT, anchors TEXT, summary TEXT, created_at TEXT,
      deleted_at TEXT, deleted_reason TEXT
    );
    INSERT INTO sessions (id, title, project, started_at, message_count)
    VALUES ('legacy-session', 'Legacy session', 'quiet-zero', '2026-06-10T10:00:00Z', 1);
  `);
  legacy.close();

  const ipcHandlers = new Map();

  // better-sqlite3-compatible adapter over node:sqlite so the real migration
  // logic (ALTER TABLE ADD COLUMN source, etc.) runs against a real database.
  class SqliteCompatDatabase {
    constructor(dbFile) {
      this.db = new DatabaseSync(dbFile);
    }
    pragma(statement) {
      this.db.exec(`PRAGMA ${statement}`);
    }
    exec(sql) {
      return this.db.exec(sql);
    }
    close() {
      return this.db.close();
    }
    prepare(sql) {
      const stmt = this.db.prepare(sql);
      return {
        all: (...params) => stmt.all(...params),
        get: (...params) => stmt.get(...params),
        run: (...params) => stmt.run(...params),
      };
    }
  }

  class FakeBrowserWindow {
    constructor() {
      this.webContents = { on() {}, setZoomLevel() {}, openDevTools() {}, send() {} };
    }
    loadFile() {}
    loadURL() {}
    close() {}
    static getAllWindows() { return []; }
    static fromWebContents() { return null; }
  }

  const restore = registerMocks([
    [ELECTRON_URL, {
      namedExports: electronNamespace({
        BrowserWindow: FakeBrowserWindow,
        ipcMain: {
          handle(channel, handler) {
            ipcHandlers.set(channel, handler);
          },
        },
      }),
    }],
    [DATABASE_URL, { defaultExport: SqliteCompatDatabase }],
    [CHOKIDAR_URL, { defaultExport: noopChokidar() }],
    [INDEXER_URL, { namedExports: { writeHeartbeat() {} } }],
    [INDEXER_SERVICE_URL, { namedExports: defaultIndexerService() }],
    [INDEXER_WORKER_URL, { namedExports: defaultIndexerWorkerClient() }],
  ]);

  try {
    await importMain();

    const sessions = ipcHandlers.get('db:getSessions')(null, {});
    assert.equal(sessions[0].id, 'legacy-session');
    assert.equal(sessions[0].source, 'claude');
    assert.deepEqual(ipcHandlers.get('db:getStats')(null, {}), {
      sessions: 1,
      memories: 0,
      memoriesArchived: 0,
    });
  } finally {
    restore();
    process.env.HOME = originalHome;
    rmSync(home, { recursive: true, force: true });
  }
});

test('closing the last macOS window releases background resources until activation', async () => {
  const originalPlatform = Object.getOwnPropertyDescriptor(process, 'platform');
  const originalHome = process.env.HOME;
  const home = join(tmpdir(), `obelisk-main-window-${Date.now()}`);
  mkdirSync(join(home, '.obelisk'), { recursive: true });
  writeFileSync(join(home, '.obelisk', 'obelisk.sqlite'), '');
  process.env.HOME = home;
  Object.defineProperty(process, 'platform', { value: 'darwin' });

  const appHandlers = new Map();
  const serviceEvents = [];
  const workers = [];
  const watchers = [];
  const windows = [];
  let quitCalled = false;

  class FakeDatabase {
    pragma() {}
    close() { serviceEvents.push('db-close'); }
    prepare() {
      return { get: () => null, all: () => [], run: () => ({}) };
    }
  }

  class FakeBrowserWindow {
    constructor() {
      this.webContents = { on() {}, setZoomLevel() {}, openDevTools() {}, send() {} };
      windows.push(this);
    }
    loadFile() {}
    loadURL() {}
    close() {}
    static getAllWindows() { return windows; }
    static fromWebContents() { return null; }
  }

  const restore = registerMocks([
    [ELECTRON_URL, {
      namedExports: electronNamespace({
        app: {
          whenReady: () => Promise.resolve(),
          on(event, handler) { appHandlers.set(event, handler); },
          quit() { quitCalled = true; },
        },
        BrowserWindow: FakeBrowserWindow,
      }),
    }],
    [DATABASE_URL, { defaultExport: FakeDatabase }],
    [CHOKIDAR_URL, {
      defaultExport: {
        watch: () => {
          const watcher = { on() { return this; }, close() { serviceEvents.push('watcher-close'); } };
          watchers.push(watcher);
          return watcher;
        },
      },
    }],
    [INDEXER_URL, { namedExports: { writeHeartbeat() {} } }],
    [INDEXER_SERVICE_URL, {
      namedExports: {
        createIndexerService: () => ({
          start() { serviceEvents.push('service-start'); },
          stop() { serviceEvents.push('service-stop'); },
          idle: async () => { serviceEvents.push('service-idle'); },
          runBuildNow() { serviceEvents.push('service-build'); return Promise.resolve(); },
        }),
      },
    }],
    [INDEXER_WORKER_URL, {
      namedExports: {
        createWorkerBuildIndex: () => {
          const worker = { stop() { serviceEvents.push('worker-stop'); } };
          workers.push(worker);
          return worker;
        },
      },
    }],
  ]);

  try {
    await importMain();

    assert.equal(windows.length, 1);
    assert.equal(workers.length, 1);
    assert.equal(watchers.length, 1);

    windows.length = 0;
    appHandlers.get('window-all-closed')();
    await new Promise(resolve => setImmediate(resolve));

    assert.equal(quitCalled, false);
    assert.ok(serviceEvents.includes('service-stop'));
    assert.ok(serviceEvents.includes('worker-stop'));
    assert.ok(serviceEvents.includes('watcher-close'));
    assert.ok(serviceEvents.includes('db-close'));

    appHandlers.get('activate')();
    await new Promise(resolve => setImmediate(resolve));

    assert.equal(windows.length, 1);
    assert.equal(workers.length, 2);
    assert.equal(watchers.length, 2);
    assert.equal(serviceEvents.filter(e => e === 'service-start').length, 2);
  } finally {
    restore();
    process.env.HOME = originalHome;
    if (originalPlatform) Object.defineProperty(process, 'platform', originalPlatform);
    rmSync(home, { recursive: true, force: true });
  }
});

test('settings rebuild reopens the database from the configured Claude path', async () => {
  const home = join(tmpdir(), `obelisk-main-settings-${Date.now()}`);
  const defaultClaudeDir = join(home, '.claude');
  const customClaudeDir = join(home, 'custom-claude');
  const customCodexDir = join(home, 'custom-codex');
  mkdirSync(defaultClaudeDir, { recursive: true });
  mkdirSync(customClaudeDir, { recursive: true });
  mkdirSync(customCodexDir, { recursive: true });
  mkdirSync(join(home, '.obelisk'), { recursive: true });
  writeFileSync(join(defaultClaudeDir, 'obelisk.sqlite'), '');
  writeFileSync(join(customClaudeDir, 'obelisk.sqlite'), 'legacy custom db');
  writeFileSync(join(home, '.obelisk', 'settings.json'), JSON.stringify({
    claudeDir: customClaudeDir,
    codexDir: customCodexDir,
  }));

  const originalHome = process.env.HOME;
  process.env.HOME = home;

  const ipcHandlers = new Map();
  const openedDbPaths = [];
  const buildCalls = [];
  const serviceEvents = [];

  class FakeDatabase {
    constructor(dbPath) {
      openedDbPaths.push(dbPath);
    }
    pragma() {}
    close() {}
    prepare() {
      return { get: () => null, all: () => [], run: () => ({}) };
    }
  }

  class FakeBrowserWindow {
    constructor() {
      this.webContents = { on() {}, setZoomLevel() {}, openDevTools() {}, send() {} };
    }
    loadFile() {}
    loadURL() {}
    close() {}
    static getAllWindows() { return []; }
    static fromWebContents() { return null; }
  }

  const restore = registerMocks([
    [ELECTRON_URL, {
      namedExports: electronNamespace({
        BrowserWindow: FakeBrowserWindow,
        ipcMain: {
          handle(channel, handler) {
            ipcHandlers.set(channel, handler);
          },
        },
      }),
    }],
    [DATABASE_URL, { defaultExport: FakeDatabase }],
    [CHOKIDAR_URL, { defaultExport: noopChokidar() }],
    [INDEXER_URL, { namedExports: { writeHeartbeat() {} } }],
    [INDEXER_SERVICE_URL, {
      namedExports: {
        createIndexerService: () => ({
          start() { serviceEvents.push('start'); },
          stop() { serviceEvents.push('stop'); },
          idle: async () => { serviceEvents.push('idle'); },
          runBuildNow() { serviceEvents.push('runBuildNow'); return Promise.resolve(); },
        }),
      },
    }],
    [INDEXER_WORKER_URL, {
      namedExports: {
        createWorkerBuildIndex: () => ({
          buildIndex: async (args) => {
            serviceEvents.push('build');
            buildCalls.push(args);
            writeFileSync(args.dbPath, 'rebuilt temp db');
            return { files: 2, affectedSessionIds: ['session-1', 'session-2'] };
          },
          stop() { return Promise.resolve(); },
        }),
      },
    }],
  ]);

  try {
    await importMain();

    const rebuild = ipcHandlers.get('settings:rebuildIndex');
    assert.equal(typeof rebuild, 'function');
    await rebuild();

    assert.equal(buildCalls.at(-1).claudeDir, customClaudeDir);
    assert.equal(buildCalls.at(-1).projectsDir, join(customClaudeDir, 'projects'));
    assert.equal(buildCalls.at(-1).codexDir, customCodexDir);
    assert.notEqual(buildCalls.at(-1).dbPath, join(home, '.obelisk', 'obelisk.sqlite'));
    assert.equal(buildCalls.at(-1).preserveDbPath, join(home, '.obelisk', 'obelisk.sqlite'));
    assert.equal(openedDbPaths.at(-1), join(home, '.obelisk', 'obelisk.sqlite'));
    assert.equal(
      require('node:fs').readFileSync(join(home, '.obelisk', 'obelisk.sqlite'), 'utf8'),
      'rebuilt temp db',
    );
    assert.ok(serviceEvents.indexOf('build') > serviceEvents.indexOf('stop'));
  } finally {
    restore();
    process.env.HOME = originalHome;
    rmSync(home, { recursive: true, force: true });
  }
});

test('settings rebuild keeps the existing database after a worker failure', async () => {
  const home = join(tmpdir(), `obelisk-main-settings-rebuild-failure-${Date.now()}`);
  const customClaudeDir = join(home, 'custom-claude');
  const customCodexDir = join(home, 'custom-codex');
  mkdirSync(customClaudeDir, { recursive: true });
  mkdirSync(customCodexDir, { recursive: true });
  mkdirSync(join(home, '.obelisk'), { recursive: true });
  writeFileSync(join(customClaudeDir, 'obelisk.sqlite'), 'legacy custom db');
  writeFileSync(join(home, '.obelisk', 'settings.json'), JSON.stringify({
    claudeDir: customClaudeDir,
    codexDir: customCodexDir,
  }));

  const originalHome = process.env.HOME;
  process.env.HOME = home;

  const ipcHandlers = new Map();
  const openedDbPaths = [];
  const closedDbPaths = [];
  const serviceEvents = [];

  class FakeDatabase {
    constructor(dbPath) {
      this.dbPath = dbPath;
      openedDbPaths.push(dbPath);
    }
    pragma() {}
    close() { closedDbPaths.push(this.dbPath); }
    prepare() {
      return { get: () => null, all: () => [], run: () => ({}) };
    }
  }

  class FakeBrowserWindow {
    constructor() {
      this.webContents = { on() {}, setZoomLevel() {}, openDevTools() {}, send() {} };
    }
    loadFile() {}
    loadURL() {}
    close() {}
    static getAllWindows() { return []; }
    static fromWebContents() { return null; }
  }

  const restore = registerMocks([
    [ELECTRON_URL, {
      namedExports: electronNamespace({
        BrowserWindow: FakeBrowserWindow,
        ipcMain: {
          handle(channel, handler) {
            ipcHandlers.set(channel, handler);
          },
        },
      }),
    }],
    [DATABASE_URL, { defaultExport: FakeDatabase }],
    [CHOKIDAR_URL, { defaultExport: noopChokidar() }],
    [INDEXER_URL, { namedExports: { writeHeartbeat() {} } }],
    [INDEXER_SERVICE_URL, {
      namedExports: {
        createIndexerService: () => ({
          start() { serviceEvents.push('start'); },
          stop() { serviceEvents.push('stop'); },
          idle: async () => { serviceEvents.push('idle'); },
          runBuildNow() { serviceEvents.push('runBuildNow'); return Promise.resolve(); },
        }),
      },
    }],
    [INDEXER_WORKER_URL, {
      namedExports: {
        createWorkerBuildIndex: () => ({
          buildIndex: async () => {
            serviceEvents.push('build');
            throw new Error('worker exploded');
          },
          stop() {},
        }),
      },
    }],
  ]);

  try {
    await importMain();

    const rebuild = ipcHandlers.get('settings:rebuildIndex');
    const openCountBeforeRebuild = openedDbPaths.length;
    await assert.rejects(() => rebuild(), /worker exploded/);

    const expectedDbPath = join(home, '.obelisk', 'obelisk.sqlite');
    assert.equal(openedDbPaths.at(-1), expectedDbPath);
    assert.equal(openedDbPaths.length, openCountBeforeRebuild);
    assert.equal(closedDbPaths.includes(expectedDbPath), false);
    assert.equal(
      require('node:fs').readFileSync(expectedDbPath, 'utf8'),
      'legacy custom db',
    );
    assert.ok(serviceEvents.indexOf('build') > serviceEvents.indexOf('stop'));
    assert.ok(serviceEvents.lastIndexOf('start') > serviceEvents.indexOf('build'));
  } finally {
    restore();
    process.env.HOME = originalHome;
    rmSync(home, { recursive: true, force: true });
  }
});

test('settings rebuild cancels an in-flight background build instead of waiting for it', async () => {
  const home = join(tmpdir(), `obelisk-main-settings-rebuild-cancel-${Date.now()}`);
  const customClaudeDir = join(home, 'custom-claude');
  const customCodexDir = join(home, 'custom-codex');
  mkdirSync(customClaudeDir, { recursive: true });
  mkdirSync(customCodexDir, { recursive: true });
  mkdirSync(join(home, '.obelisk'), { recursive: true });
  writeFileSync(join(customClaudeDir, 'obelisk.sqlite'), 'legacy custom db');
  writeFileSync(join(home, '.obelisk', 'settings.json'), JSON.stringify({
    claudeDir: customClaudeDir,
    codexDir: customCodexDir,
  }));

  const originalHome = process.env.HOME;
  process.env.HOME = home;

  const ipcHandlers = new Map();
  const serviceEvents = [];
  let buildIndexCalls = 0;

  class FakeDatabase {
    pragma() {}
    close() {}
    prepare() {
      return { get: () => null, all: () => [], run: () => ({}) };
    }
  }

  class FakeBrowserWindow {
    constructor() {
      this.webContents = { on() {}, setZoomLevel() {}, openDevTools() {}, send() {} };
    }
    loadFile() {}
    loadURL() {}
    close() {}
    static getAllWindows() { return []; }
    static fromWebContents() { return null; }
  }

  const restore = registerMocks([
    [ELECTRON_URL, {
      namedExports: electronNamespace({
        BrowserWindow: FakeBrowserWindow,
        ipcMain: {
          handle(channel, handler) {
            ipcHandlers.set(channel, handler);
          },
        },
      }),
    }],
    [DATABASE_URL, { defaultExport: FakeDatabase }],
    [CHOKIDAR_URL, { defaultExport: noopChokidar() }],
    [INDEXER_URL, { namedExports: { writeHeartbeat() {} } }],
    [INDEXER_SERVICE_URL, {
      namedExports: {
        createIndexerService: () => ({
          start() { serviceEvents.push('start'); },
          stop() { serviceEvents.push('stop'); },
          idle: async () => new Promise(() => {}),
          runBuildNow() { serviceEvents.push('runBuildNow'); return Promise.resolve(); },
        }),
      },
    }],
    [INDEXER_WORKER_URL, {
      namedExports: {
        createWorkerBuildIndex: () => ({
          buildIndex: async (args) => {
            serviceEvents.push(`build-${++buildIndexCalls}`);
            writeFileSync(args.dbPath, 'rebuilt temp db');
            return { files: 2, affectedSessionIds: [] };
          },
          stop() {
            serviceEvents.push('worker-stop');
            return Promise.resolve();
          },
        }),
      },
    }],
  ]);

  try {
    await importMain();

    const rebuild = ipcHandlers.get('settings:rebuildIndex');
    const outcome = await Promise.race([
      rebuild().then(() => 'done'),
      new Promise(resolve => setTimeout(() => resolve('timeout'), 20)),
    ]);

    assert.equal(outcome, 'done');
    assert.ok(serviceEvents.indexOf('worker-stop') > serviceEvents.indexOf('stop'));
    assert.ok(serviceEvents.some(event => event.startsWith('build-')));
  } finally {
    restore();
    process.env.HOME = originalHome;
    rmSync(home, { recursive: true, force: true });
  }
});