import { describe, it, expect } from 'vitest';
import { InMemoryGmailClient } from '../src/dev-client.js';

describe('InMemoryGmailClient', () => {
  describe('searchInbox', () => {
    it('matches a case-insensitive substring against subject/snippet', async () => {
      const client = new InMemoryGmailClient();
      const results = await client.searchInbox({
        userSub: 'lauren@seahavenind.com',
        query: 'INVOICE',
        maxResults: 10,
      });
      expect(results.map((m) => m.id)).toEqual(['msg-l-1']);
    });

    it('matches against the snippet body too', async () => {
      const client = new InMemoryGmailClient();
      const results = await client.searchInbox({
        userSub: 'lauren@seahavenind.com',
        query: 'walkthrough',
        maxResults: 10,
      });
      expect(results.map((m) => m.id)).toEqual(['msg-l-2']);
    });

    it('caps results at maxResults', async () => {
      const client = new InMemoryGmailClient();
      const results = await client.searchInbox({
        userSub: 'lauren@seahavenind.com',
        query: '',
        maxResults: 1,
      });
      expect(results).toHaveLength(1);
    });

    it("is partitioned by userSub — lauren cannot see adam's mail", async () => {
      const client = new InMemoryGmailClient();
      const results = await client.searchInbox({
        userSub: 'lauren@seahavenind.com',
        query: 'check #2087',
        maxResults: 10,
      });
      expect(results).toEqual([]);

      const adamResults = await client.searchInbox({
        userSub: 'adam@seahavenind.com',
        query: 'check #2087',
        maxResults: 10,
      });
      expect(adamResults.map((m) => m.id)).toEqual(['msg-a-1']);
    });

    it('returns an empty list for an unknown sub', async () => {
      const client = new InMemoryGmailClient();
      const results = await client.searchInbox({
        userSub: 'nobody@example.com',
        query: 'invoice',
        maxResults: 10,
      });
      expect(results).toEqual([]);
    });
  });

  describe('getThreadDetail', () => {
    it('returns an owned thread', async () => {
      const client = new InMemoryGmailClient();
      const thread = await client.getThreadDetail({
        userSub: 'lauren@seahavenind.com',
        threadId: 'thr-l-1',
      });
      expect(thread.threadId).toBe('thr-l-1');
      expect(thread.subject).toBe('Invoice #4821 from Coastal Supply');
      expect(thread.messages).toHaveLength(1);
    });

    it('throws for an unknown threadId', async () => {
      const client = new InMemoryGmailClient();
      await expect(
        client.getThreadDetail({ userSub: 'lauren@seahavenind.com', threadId: 'thr-missing' }),
      ).rejects.toThrow(/not found/);
    });

    it('throws when the thread is not owned by the caller', async () => {
      const client = new InMemoryGmailClient();
      await expect(
        client.getThreadDetail({ userSub: 'lauren@seahavenind.com', threadId: 'thr-a-1' }),
      ).rejects.toThrow(/not found/);
    });

    it('throws for an unknown user', async () => {
      const client = new InMemoryGmailClient();
      await expect(
        client.getThreadDetail({ userSub: 'nobody@example.com', threadId: 'thr-l-1' }),
      ).rejects.toThrow(/not found/);
    });
  });
});