import test from 'node:test';
import assert from 'node:assert/strict';
import * as fs from 'fs';
import * as os from 'os';
import * as path from 'path';

import {
  buildCharacterDictionarySeriesKey,
  createCharacterDictionaryManualSelectionStore,
} from './manual-selection';

const REZERO_EP1 =
  '/anime/ReZERO/Season 1/Re - ZERO, Starting Life in Another World (2016) - S01E01 - - The End of the Beginning and the Beginning of the End [v2 Bluray-1080p Proper][10bit][x265][FLAC 2.0][EN+JA]-SCY.mkv';
const REZERO_EP2 =
  '/anime/ReZERO/Season 1/Re - ZERO, Starting Life in Another World (2016) - S01E02 - Reunion with the Witch [Bluray-1080p][x265][JA]-SCY.mkv';
const REZERO_S2_EP1 =
  '/anime/ReZERO/Season 2/Re - ZERO, Starting Life in Another World (2016) - S02E01 - Each Ones Promise [Bluray-1080p][x265][JA]-SCY.mkv';

function makeTempDir(): string {
  return fs.mkdtempSync(path.join(os.tmpdir(), 'subminer-manual-selection-'));
}

test('buildCharacterDictionarySeriesKey scopes guessit title and year by media directory', () => {
  const key = buildCharacterDictionarySeriesKey({
    mediaPath: REZERO_EP1,
    mediaTitle: null,
    guess: {
      title: 'Re ZERO, Starting Life in Another World',
      alternativeTitle: 'ZERO, Starting Life in Another World',
      year: 2016,
      season: 1,
      episode: 1,
      source: 'guessit',
    },
  });

  assert.equal(key, 'anime-rezero-season-1--re-zero-starting-life-in-another-world-2016');
});

test('manual selection store persists overrides and matches later episodes in the same directory', async () => {
  const userDataPath = makeTempDir();
  const store = createCharacterDictionaryManualSelectionStore({ userDataPath });
  const firstKey = buildCharacterDictionarySeriesKey({
    mediaPath: REZERO_EP1,
    mediaTitle: null,
    guess: {
      title: 'Re ZERO, Starting Life in Another World',
      alternativeTitle: 'ZERO, Starting Life in Another World',
      year: 2016,
      season: 1,
      episode: 1,
      source: 'guessit',
    },
  });
  await store.setOverride({
    seriesKey: firstKey,
    mediaId: 21355,
    mediaTitle: 'Re:ZERO -Starting Life in Another World-',
    staleMediaIds: [10607],
  });

  const reloaded = createCharacterDictionaryManualSelectionStore({ userDataPath });
  const secondKey = buildCharacterDictionarySeriesKey({
    mediaPath: REZERO_EP2,
    mediaTitle: null,
    guess: {
      title: 'Re ZERO, Starting Life in Another World',
      alternativeTitle: 'ZERO, Starting Life in Another World',
      year: 2016,
      season: 1,
      episode: 2,
      source: 'guessit',
    },
  });

  assert.equal(secondKey, firstKey);
  assert.deepEqual(await reloaded.getOverride(secondKey), {
    seriesKey: firstKey,
    mediaId: 21355,
    mediaTitle: 'Re:ZERO -Starting Life in Another World-',
    staleMediaIds: [10607],
  });
});

test('manual selection store resolves legacy unscoped override keys', async () => {
  const userDataPath = makeTempDir();
  const overrideDir = path.join(userDataPath, 'character-dictionaries');
  fs.mkdirSync(overrideDir, { recursive: true });
  fs.writeFileSync(
    path.join(overrideDir, 'anilist-overrides.json'),
    JSON.stringify({
      overrides: [
        {
          seriesKey: 're-zero-starting-life-in-another-world-2016',
          mediaId: 21355,
          mediaTitle: 'Re:ZERO -Starting Life in Another World-',
          staleMediaIds: [10607],
        },
      ],
    }),
    'utf8',
  );

  const scopedKey = buildCharacterDictionarySeriesKey({
    mediaPath: REZERO_EP1,
    mediaTitle: null,
    guess: {
      title: 'Re ZERO, Starting Life in Another World',
      alternativeTitle: 'ZERO, Starting Life in Another World',
      year: 2016,
      season: 1,
      episode: 1,
      source: 'guessit',
    },
  });

  const store = createCharacterDictionaryManualSelectionStore({ userDataPath });

  assert.deepEqual(await store.getOverride(scopedKey), {
    seriesKey: 're-zero-starting-life-in-another-world-2016',
    mediaId: 21355,
    mediaTitle: 'Re:ZERO -Starting Life in Another World-',
    staleMediaIds: [10607],
  });
});

test('manual selection store prefers exact scoped override over legacy fallback', async () => {
  const userDataPath = makeTempDir();
  const overrideDir = path.join(userDataPath, 'character-dictionaries');
  fs.mkdirSync(overrideDir, { recursive: true });
  const scopedKey = buildCharacterDictionarySeriesKey({
    mediaPath: REZERO_EP1,
    mediaTitle: null,
    guess: {
      title: 'Re ZERO, Starting Life in Another World',
      alternativeTitle: 'ZERO, Starting Life in Another World',
      year: 2016,
      season: 1,
      episode: 1,
      source: 'guessit',
    },
  });
  fs.writeFileSync(
    path.join(overrideDir, 'anilist-overrides.json'),
    JSON.stringify({
      overrides: [
        {
          seriesKey: 're-zero-starting-life-in-another-world-2016',
          mediaId: 10607,
          mediaTitle: 'Legacy Re:ZERO',
          staleMediaIds: [],
        },
        {
          seriesKey: scopedKey,
          mediaId: 21355,
          mediaTitle: 'Re:ZERO -Starting Life in Another World-',
          staleMediaIds: [10607],
        },
      ],
    }),
    'utf8',
  );

  const store = createCharacterDictionaryManualSelectionStore({ userDataPath });

  assert.deepEqual(await store.getOverride(scopedKey), {
    seriesKey: scopedKey,
    mediaId: 21355,
    mediaTitle: 'Re:ZERO -Starting Life in Another World-',
    staleMediaIds: [10607],
  });
});

test('manual selection store keeps overrides separate for different season directories', async () => {
  const userDataPath = makeTempDir();
  const store = createCharacterDictionaryManualSelectionStore({ userDataPath });
  const firstSeasonKey = buildCharacterDictionarySeriesKey({
    mediaPath: REZERO_EP1,
    mediaTitle: null,
    guess: {
      title: 'Re ZERO, Starting Life in Another World',
      alternativeTitle: 'ZERO, Starting Life in Another World',
      year: 2016,
      season: 1,
      episode: 1,
      source: 'guessit',
    },
  });
  await store.setOverride({
    seriesKey: firstSeasonKey,
    mediaId: 21355,
    mediaTitle: 'Re:ZERO -Starting Life in Another World-',
    staleMediaIds: [],
  });

  const secondSeasonKey = buildCharacterDictionarySeriesKey({
    mediaPath: REZERO_S2_EP1,
    mediaTitle: null,
    guess: {
      title: 'Re ZERO, Starting Life in Another World',
      alternativeTitle: 'ZERO, Starting Life in Another World',
      year: 2016,
      season: 2,
      episode: 1,
      source: 'guessit',
    },
  });

  assert.notEqual(secondSeasonKey, firstSeasonKey);
  assert.equal(await store.getOverride(secondSeasonKey), null);
});