import assert from 'node:assert/strict';
import test from 'node:test';
import { createIntentDraftService } from './intent-draft-service.mjs';

function createMemoryPool() {
  const rows = new Map();
  return {
    async query(sql, params = []) {
      if (sql.includes('UPDATE h5_intent_drafts') && sql.includes("status = 'expired'")) {
        return [{ affectedRows: 0 }];
      }
      if (sql.includes('UPDATE h5_intent_drafts') && sql.includes("status = 'cancelled'") && sql.includes("status = 'draft'")) {
        for (const row of rows.values()) {
          if (row.user_id === params[1] && row.status === 'draft') {
            row.status = 'cancelled';
            row.updated_at = params[0];
          }
        }
        return [{ affectedRows: 1 }];
      }
      if (sql.includes('INSERT INTO h5_intent_drafts')) {
        const id = params[0];
        rows.set(id, {
          id,
          user_id: params[1],
          layer: params[2],
          draft_type: params[3],
          action_level: params[4],
          title: params[5],
          payload_json: params[6],
          card_text: params[7],
          status: 'draft',
          source_channel: params[9],
          source_message_id: params[10],
          source_text: params[11],
          committed_ref_json: null,
          event_log_json: params[12],
          expires_at: params[13],
          created_at: params[14],
          updated_at: params[15],
        });
        return [{ affectedRows: 1 }];
      }
      if (sql.includes('SELECT * FROM h5_intent_drafts WHERE id = ? AND user_id = ?')) {
        const row = rows.get(params[0]);
        return [[row && row.user_id === params[1] ? row : undefined].filter(Boolean)];
      }
      if (sql.includes('SELECT * FROM h5_intent_drafts') && sql.includes('user_id = ?') && sql.includes("status = 'draft'")) {
        const userId = params[0];
        const draft = [...rows.values()]
          .filter((row) => row.user_id === userId && row.status === 'draft')
          .sort((a, b) => b.created_at - a.created_at)[0];
        return [[draft ?? undefined].filter(Boolean)];
      }
      if (sql.includes('SELECT * FROM h5_intent_drafts WHERE id = ?')) {
        const row = rows.get(params[0]);
        return [[row].filter(Boolean)];
      }
      if (sql.includes("SET status = 'cancelled'") && sql.includes('WHERE id = ?')) {
        const row = rows.get(params[2]);
        if (row) {
          row.status = 'cancelled';
          row.event_log_json = params[0];
          row.updated_at = params[1];
        }
        return [{ affectedRows: 1 }];
      }
      if (sql.includes("SET status = 'committed'")) {
        const row = rows.get(params[3]);
        if (row) {
          row.status = 'committed';
          row.committed_ref_json = params[0];
          row.event_log_json = params[1];
          row.updated_at = params[2];
        }
        return [{ affectedRows: 1 }];
      }
      throw new Error(`Unexpected SQL: ${sql}`);
    },
  };
}

test('createDraft replaces previous pending draft for same user', async () => {
  const pool = createMemoryPool();
  const service = createIntentDraftService(pool, { clock: { now: () => 1000 }, ttlMs: 60000 });
  const first = await service.createDraft({
    userId: 'user-1',
    layer: 'L1',
    draftType: 'timed_reminder',
    title: '第一次',
    payload: { title: '第一次' },
    cardText: 'card-1',
  });
  const second = await service.createDraft({
    userId: 'user-1',
    layer: 'L1',
    draftType: 'timed_reminder',
    title: '第二次',
    payload: { title: '第二次' },
    cardText: 'card-2',
  });
  const pending = await service.getPendingDraft('user-1');
  assert.notEqual(first.id, second.id);
  assert.equal(pending.title, '第二次');
});

test('markDraftCommitted stores committed ref', async () => {
  const pool = createMemoryPool();
  const service = createIntentDraftService(pool, { clock: { now: () => 2000 }, ttlMs: 60000 });
  const draft = await service.createDraft({
    userId: 'user-1',
    layer: 'L1',
    draftType: 'create_todo',
    title: '跟进合同',
    payload: { title: '跟进合同' },
    cardText: 'card',
  });
  const committed = await service.markDraftCommitted(draft.id, 'user-1', { kind: 'create_todo', item: { id: 'item-1' } });
  assert.equal(committed.status, 'committed');
  assert.deepEqual(committed.committedRef, { kind: 'create_todo', item: { id: 'item-1' } });
});