import { describe, expect, it } from 'vitest';
import { initialNote, readVoiceFields } from '../src/core/note';
import { QueueRunner } from '../src/core/queue';
import type { VoiceRecord } from '../src/core/record';
import { MemoryNotes, MemoryRecordings, ScriptedTranscriber, TestEnv, type Step } from './fakes';

const T0 = new Date('2026-09-27T11:15:03.000Z');

function setup(steps: Step[] = []) {
  const env = new TestEnv(T0);
  const notes = new MemoryNotes();
  const recordings = new MemoryRecordings();
  const transcriber = new ScriptedTranscriber(steps);
  const runner = new QueueRunner({ recordings, notes, transcriber, env });
  return { env, notes, recordings, transcriber, runner };
}
type Ctx = ReturnType<typeof setup>;

function rec(id: string, over: Partial<VoiceRecord> = {}): VoiceRecord {
  return { id, status: 'saved', device: 'test-device', audio: `voice/source/${id}.m4a`, mime: 'audio/mp4', attempts: 0, ...over };
}

function seed(ctx: Ctx, record: VoiceRecord): string {
  const path = `voice/inbox/${record.id}.md`;
  ctx.notes.files.set(path, initialNote(record, 0));
  ctx.recordings.files.set(record.audio, new Uint8Array([1]).buffer);
  return path;
}

const fields = (ctx: Ctx, path: string) => readVoiceFields(ctx.notes.files.get(path)!);

describe('QueueRunner.retry', () => {
  it('failed → sent again with attempts from zero', async () => {
    const ctx = setup([{ ok: false, kind: 'temporary', message: 'offline' }]);
    const path = seed(ctx, rec('a', { status: 'failed', attempts: 5, error: '401' }));
    expect(await ctx.runner.retry(path)).toBe(true);
    expect(ctx.transcriber.calls).toHaveLength(1);
    expect(fields(ctx, path)).toMatchObject({ 'voice-status': 'retry', 'voice-attempts': '1' });
  });

  it('retry state: sends now without waiting', async () => {
    const ctx = setup([{ ok: true, text: 'x' }]);
    const path = seed(ctx, rec('a', { status: 'retry', attempts: 2, nextAttempt: '2026-09-27T12:00:00.000Z', error: 't' }));
    expect(await ctx.runner.retry(path)).toBe(true);
    expect(fields(ctx, path)).toMatchObject({ 'voice-status': 'inserted', 'voice-attempts': '0' });
  });

  it("claims another device's failed record", async () => {
    const ctx = setup([{ ok: true, text: 'x' }]);
    const path = seed(ctx, rec('a', { status: 'failed', attempts: 5, error: 'e', device: 'iphone' }));
    expect(await ctx.runner.retry(path)).toBe(true);
    expect(fields(ctx, path)).toMatchObject({ 'voice-status': 'inserted', 'voice-device': 'test-device' });
  });

  it.each([
    ['saved', {}],
    ['inserted', {}],
    ['sent', { sentAt: T0.toISOString() }],
  ] as const)('%s: no change, no request', async (status, over) => {
    const ctx = setup([]);
    const path = seed(ctx, rec('a', { status, ...over }));
    const before = ctx.notes.files.get(path);
    expect(await ctx.runner.retry(path)).toBe(false);
    expect(ctx.notes.files.get(path)).toBe(before);
    expect(ctx.transcriber.calls).toHaveLength(0);
  });

  it('missing note → false', async () => {
    expect(await setup().runner.retry('voice/inbox/nope.md')).toBe(false);
  });

  it('after dispose(): no change, no request', async () => {
    const ctx = setup([]);
    const path = seed(ctx, rec('a', { status: 'failed', attempts: 5, error: 'e' }));
    const before = ctx.notes.files.get(path);
    ctx.runner.dispose();
    expect(await ctx.runner.retry(path)).toBe(false);
    expect(ctx.notes.files.get(path)).toBe(before);
    expect(ctx.transcriber.calls).toHaveLength(0);
  });
});

describe('QueueRunner.claimAll', () => {
  it("takes the phone's retry and sends it now, keeping attempts", async () => {
    const ctx = setup([{ ok: true, text: 'x' }]);
    const path = seed(ctx, rec('a', { device: 'iphone', status: 'retry', attempts: 2, nextAttempt: '2026-09-27T11:35:03.000Z', error: 't' }));
    expect(await ctx.runner.claimAll()).toBe(1);
    expect(ctx.transcriber.calls).toHaveLength(1);
    expect(fields(ctx, path)).toMatchObject({ 'voice-status': 'inserted', 'voice-device': 'test-device', 'voice-attempts': '2' });
  });

  it('includes stale sent, own retry and own stale sent; leaves failed, inserted and fresh sent untouched', async () => {
    const ctx = setup([
      { ok: true, text: 'w' },
      { ok: true, text: 'x' },
      { ok: true, text: 'y' },
      { ok: true, text: 'z' },
    ]);
    const o = { device: 'iphone' };
    const saved = seed(ctx, rec('a', o));
    const stale = seed(ctx, rec('b', { ...o, status: 'sent', sentAt: '2026-09-27T11:04:00.000Z' }));
    const fresh = seed(ctx, rec('c', { ...o, status: 'sent', sentAt: '2026-09-27T11:13:03.000Z' }));
    const failed = seed(ctx, rec('d', { ...o, status: 'failed', attempts: 5, error: 'e' }));
    const done = seed(ctx, rec('e', { ...o, status: 'inserted' }));
    const ownRetry = seed(ctx, rec('f', { status: 'retry', attempts: 1, nextAttempt: '2026-09-27T11:35:03.000Z', error: 't' }));
    const ownStale = seed(ctx, rec('g', { status: 'sent', sentAt: '2026-09-27T11:04:00.000Z' }));
    const ownFresh = seed(ctx, rec('h', { status: 'sent', sentAt: '2026-09-27T11:13:03.000Z' }));
    const untouched = [fresh, failed, done, ownFresh].map((p) => ctx.notes.files.get(p));

    expect(await ctx.runner.claimAll()).toBe(2);
    expect(fields(ctx, saved)['voice-status']).toBe('inserted');
    expect(fields(ctx, stale)['voice-status']).toBe('inserted');
    expect(fields(ctx, ownRetry)['voice-status']).toBe('inserted');
    expect(fields(ctx, ownStale)['voice-status']).toBe('inserted');
    expect([fresh, failed, done, ownFresh].map((p) => ctx.notes.files.get(p))).toEqual(untouched);
  });

  it('nothing to claim → 0', async () => {
    expect(await setup().runner.claimAll()).toBe(0);
  });
});