import test from 'node:test';
import assert from 'node:assert/strict';
import { AppReadyRuntimeDeps, runAppReadyRuntime } from './startup';

function makeDeps(overrides: Partial<AppReadyRuntimeDeps> = {}) {
  const calls: string[] = [];
  const deps: AppReadyRuntimeDeps = {
    loadSubtitlePosition: () => calls.push('loadSubtitlePosition'),
    resolveKeybindings: () => calls.push('resolveKeybindings'),
    createMpvClient: () => calls.push('createMpvClient'),
    reloadConfig: () => calls.push('reloadConfig'),
    getResolvedConfig: () => ({
      websocket: { enabled: 'auto' },
      secondarySub: {},
    }),
    getConfigWarnings: () => [],
    logConfigWarning: () => calls.push('logConfigWarning'),
    setLogLevel: (level, source) => calls.push(`setLogLevel:${level}:${source}`),
    initRuntimeOptionsManager: () => calls.push('initRuntimeOptionsManager'),
    setSecondarySubMode: (mode) => calls.push(`setSecondarySubMode:${mode}`),
    defaultSecondarySubMode: 'hover',
    defaultWebsocketPort: 9001,
    hasMpvWebsocketPlugin: () => true,
    startSubtitleWebsocket: (port) => calls.push(`startSubtitleWebsocket:${port}`),
    log: (message) => calls.push(`log:${message}`),
    createMecabTokenizerAndCheck: async () => {
      calls.push('createMecabTokenizerAndCheck');
    },
    createSubtitleTimingTracker: () => calls.push('createSubtitleTimingTracker'),
    createImmersionTracker: () => calls.push('createImmersionTracker'),
    startJellyfinRemoteSession: async () => {
      calls.push('startJellyfinRemoteSession');
    },
    loadYomitanExtension: async () => {
      calls.push('loadYomitanExtension');
    },
    prewarmSubtitleDictionaries: async () => {
      calls.push('prewarmSubtitleDictionaries');
    },
    startBackgroundWarmups: () => {
      calls.push('startBackgroundWarmups');
    },
    texthookerOnlyMode: false,
    shouldAutoInitializeOverlayRuntimeFromConfig: () => true,
    initializeOverlayRuntime: () => calls.push('initializeOverlayRuntime'),
    handleInitialArgs: () => calls.push('handleInitialArgs'),
    logDebug: (message) => calls.push(`debug:${message}`),
    now: () => 1000,
    ...overrides,
  };
  return { deps, calls };
}

test('runAppReadyRuntime starts websocket in auto mode when plugin missing', async () => {
  const { deps, calls } = makeDeps({
    hasMpvWebsocketPlugin: () => false,
  });
  await runAppReadyRuntime(deps);
  assert.ok(calls.includes('startSubtitleWebsocket:9001'));
  assert.ok(calls.includes('initializeOverlayRuntime'));
  assert.ok(calls.includes('createImmersionTracker'));
  assert.ok(calls.includes('startBackgroundWarmups'));
  assert.ok(calls.includes('log:Runtime ready: invoking createImmersionTracker.'));
});

test('runAppReadyRuntime skips Jellyfin remote startup when dependency is not wired', async () => {
  const { deps, calls } = makeDeps({
    startJellyfinRemoteSession: undefined,
  });

  await runAppReadyRuntime(deps);

  assert.equal(calls.includes('startJellyfinRemoteSession'), false);
  assert.ok(calls.includes('createMpvClient'));
  assert.ok(calls.includes('createSubtitleTimingTracker'));
  assert.ok(calls.includes('handleInitialArgs'));
  assert.ok(calls.includes('startBackgroundWarmups'));
  assert.ok(
    calls.includes('initializeOverlayRuntime') ||
      calls.includes('log:Overlay runtime deferred: waiting for explicit overlay command.'),
  );
});

test('runAppReadyRuntime logs when createImmersionTracker dependency is missing', async () => {
  const { deps, calls } = makeDeps({
    createImmersionTracker: undefined,
  });
  await runAppReadyRuntime(deps);
  assert.ok(calls.includes('log:Runtime ready: createImmersionTracker dependency is missing.'));
});

test('runAppReadyRuntime logs and continues when createImmersionTracker throws', async () => {
  const { deps, calls } = makeDeps({
    createImmersionTracker: () => {
      calls.push('createImmersionTracker');
      throw new Error('immersion init failed');
    },
  });
  await runAppReadyRuntime(deps);
  assert.ok(calls.includes('createImmersionTracker'));
  assert.ok(
    calls.includes('log:Runtime ready: createImmersionTracker failed: immersion init failed'),
  );
  assert.ok(calls.includes('initializeOverlayRuntime'));
  assert.ok(calls.includes('handleInitialArgs'));
});

test('runAppReadyRuntime logs defer message when overlay not auto-started', async () => {
  const { deps, calls } = makeDeps({
    shouldAutoInitializeOverlayRuntimeFromConfig: () => false,
  });
  await runAppReadyRuntime(deps);
  assert.ok(calls.includes('log:Overlay runtime deferred: waiting for explicit overlay command.'));
});

test('runAppReadyRuntime applies config logging level during app-ready', async () => {
  const { deps, calls } = makeDeps({
    getResolvedConfig: () => ({
      websocket: { enabled: 'auto' },
      secondarySub: {},
      logging: { level: 'warn' },
    }),
  });
  await runAppReadyRuntime(deps);
  assert.ok(calls.includes('setLogLevel:warn:config'));
});

test('runAppReadyRuntime does not await background warmups', async () => {
  const calls: string[] = [];
  let releaseWarmup: (() => void) | undefined;
  const warmupGate = new Promise<void>((resolve) => {
    releaseWarmup = resolve;
  });
  const { deps } = makeDeps({
    startBackgroundWarmups: () => {
      calls.push('startBackgroundWarmups');
      void warmupGate.then(() => {
        calls.push('warmupDone');
      });
    },
    handleInitialArgs: () => {
      calls.push('handleInitialArgs');
    },
  });

  await runAppReadyRuntime(deps);
  assert.deepEqual(calls.slice(0, 2), ['handleInitialArgs', 'startBackgroundWarmups']);
  assert.equal(calls.includes('warmupDone'), false);
  assert.ok(releaseWarmup);
  releaseWarmup();
});

test('runAppReadyRuntime exits before service init when critical anki mappings are invalid', async () => {
  const capturedErrors: string[][] = [];
  const { deps, calls } = makeDeps({
    getResolvedConfig: () => ({
      websocket: { enabled: 'auto' },
      secondarySub: {},
      ankiConnect: {
        enabled: true,
        fields: {
          audio: 'ExpressionAudio',
          image: 'Picture',
          sentence: '   ',
          miscInfo: 'MiscInfo',
          translation: '',
        },
      },
    }),
    onCriticalConfigErrors: (errors) => {
      capturedErrors.push(errors);
    },
  });

  await runAppReadyRuntime(deps);

  assert.equal(capturedErrors.length, 1);
  assert.deepEqual(capturedErrors[0], [
    'ankiConnect.fields.sentence must be a non-empty string when ankiConnect is enabled.',
    'ankiConnect.fields.translation must be a non-empty string when ankiConnect is enabled.',
  ]);
  assert.ok(calls.includes('reloadConfig'));
  assert.equal(calls.includes('createMpvClient'), false);
  assert.equal(calls.includes('initRuntimeOptionsManager'), false);
  assert.equal(calls.includes('startBackgroundWarmups'), false);
});

test('runAppReadyRuntime aggregates multiple critical anki mapping errors', async () => {
  const capturedErrors: string[][] = [];
  const { deps, calls } = makeDeps({
    getResolvedConfig: () => ({
      websocket: { enabled: 'auto' },
      secondarySub: {},
      ankiConnect: {
        enabled: true,
        fields: {
          audio: ' ',
          image: '',
          sentence: '\t',
          miscInfo: '   ',
          translation: '',
        },
      },
    }),
    onCriticalConfigErrors: (errors) => {
      capturedErrors.push(errors);
    },
  });

  await runAppReadyRuntime(deps);

  const firstErrorSet = capturedErrors[0]!;
  assert.equal(capturedErrors.length, 1);
  assert.equal(firstErrorSet.length, 5);
  assert.ok(
    firstErrorSet.includes(
      'ankiConnect.fields.audio must be a non-empty string when ankiConnect is enabled.',
    ),
  );
  assert.ok(
    firstErrorSet.includes(
      'ankiConnect.fields.image must be a non-empty string when ankiConnect is enabled.',
    ),
  );
  assert.ok(
    firstErrorSet.includes(
      'ankiConnect.fields.sentence must be a non-empty string when ankiConnect is enabled.',
    ),
  );
  assert.ok(
    firstErrorSet.includes(
      'ankiConnect.fields.miscInfo must be a non-empty string when ankiConnect is enabled.',
    ),
  );
  assert.ok(
    firstErrorSet.includes(
      'ankiConnect.fields.translation must be a non-empty string when ankiConnect is enabled.',
    ),
  );
  assert.equal(calls.includes('loadSubtitlePosition'), false);
});