import { describe, it, expect } from 'vitest';
import { makeGraphClient } from '../src/lib/graph-client';
import type { Envelope } from '../src/types';

const env: Envelope = {
  source: { uri: 'github:o/r@a.md', content_hash: 'abc' },
  extractor: { model: 'local-harvest', tier: 'shallow' },
  triplets: [{ subject: 'A', predicate: 'p', object: 'B' }],
};

function mockFetch(status: number, body: unknown): typeof fetch {
  return (async () =>
    new Response(JSON.stringify(body), { status, headers: { 'Content-Type': 'application/json' } })) as any;
}

describe('makeGraphClient', () => {
  it('GRAPH_BASE_URL 未設 → 誠實回 ok:false，不假綠、不打網路', async () => {
    let called = false;
    const client = makeGraphClient(undefined, undefined, (async () => {
      called = true;
      return new Response('{}');
    }) as any);
    const r = await client.postEnvelope(env);
    expect(r.ok).toBe(false);
    expect(r.error).toContain('未設');
    expect(called).toBe(false);
  });

  it('200 → ok + 帶 graph 回的 {skipped,ingested,deprecated}', async () => {
    const client = makeGraphClient('https://graph.example', 'tok', mockFetch(200, { skipped: false, ingested: 1, deprecated: 0 }));
    const r = await client.postEnvelope(env);
    expect(r.ok).toBe(true);
    expect((r.body as any).ingested).toBe(1);
  });

  it('422 → ok:false 帶 issues（供修禁送欄位）', async () => {
    const client = makeGraphClient('https://graph.example', undefined, mockFetch(422, { error: 'invalid envelope', issues: [{ path: ['bridge_score'] }] }));
    const r = await client.postEnvelope(env);
    expect(r.ok).toBe(false);
    expect(r.status).toBe(422);
    expect((r.body as any).issues).toBeDefined();
  });
});