import assert from 'node:assert/strict';
import crypto from 'node:crypto';
import test from 'node:test';
import { createImageMakeClient, createImageMakeClientFromEnv } from './image-make-client.mjs';

test('image_make client creates, polls, validates, downloads and acknowledges a job', async () => {
  const image = Buffer.concat([
    Buffer.from('RIFF'),
    Buffer.alloc(4),
    Buffer.from('WEBP'),
    Buffer.from('test-image'),
  ]);
  const sha256 = crypto.createHash('sha256').update(image).digest('hex');
  const calls = [];
  const fetchImpl = async (url, init) => {
    const path = new URL(url).pathname;
    calls.push({ path, init });
    if (path === '/v1/generation-jobs') {
      return Response.json({ job_id: 'job-1', status: 'queued' }, { status: 201 });
    }
    if (path === '/v1/generation-jobs/job-1' && init.method !== 'POST') {
      return Response.json({
        job_id: 'job-1',
        status: 'succeeded',
        result: {
          download_url: '/v1/generation-jobs/job-1/result',
          sha256,
          width: 512,
          height: 512,
        },
      });
    }
    if (path.endsWith('/result')) {
      return new Response(image, {
        headers: { 'content-type': 'image/webp', 'x-artifact-sha256': sha256 },
      });
    }
    if (path.endsWith('/acknowledge')) return Response.json({ job_id: 'job-1' });
    throw new Error(`Unexpected request ${path}`);
  };
  const client = createImageMakeClient({
    baseUrl: 'http://127.0.0.1:8080',
    token: 'test-token',
    fetchImpl,
    sleep: async () => {},
  });
  const result = await client.generateImage({
    prompt: 'calm reading room',
    presetId: 'memind_square_illustration',
    idempotencyKey: 'imgreq-test',
  });
  assert.equal(result.jobId, 'job-1');
  assert.equal(result.sha256, sha256);
  assert.deepEqual(result.buffer, image);
  await client.acknowledge(result.jobId, 'asset-1');
  assert.deepEqual(calls.map((call) => call.path), [
    '/v1/generation-jobs',
    '/v1/generation-jobs/job-1',
    '/v1/generation-jobs/job-1/result',
    '/v1/generation-jobs/job-1/acknowledge',
  ]);
  assert.equal(calls[0].init.headers.authorization, 'Bearer test-token');
  assert.equal(calls[0].init.headers['idempotency-key'], 'imgreq-test');
});

test('image_make client fails closed on checksum mismatch', async () => {
  const image = Buffer.concat([Buffer.from('RIFF'), Buffer.alloc(4), Buffer.from('WEBPbad')]);
  const client = createImageMakeClient({
    baseUrl: 'http://127.0.0.1:8080', token: 'test-token', sleep: async () => {},
    fetchImpl: async (url) => {
      const path = new URL(url).pathname;
      if (path === '/v1/generation-jobs') return Response.json({ job_id: 'job-1', status: 'running' }, { status: 201 });
      if (path.endsWith('/result')) return new Response(image, { headers: { 'content-type': 'image/webp' } });
      return Response.json({ job_id: 'job-1', status: 'succeeded', result: { download_url: '/v1/generation-jobs/job-1/result', sha256: '0'.repeat(64) } });
    },
  });
  await assert.rejects(
    client.generateImage({ prompt: 'x', presetId: 'memind_square_illustration' }),
    { code: 'IMAGE_MAKE_CHECKSUM_MISMATCH' },
  );
});

test('image_make client resolves a completed idempotent reuse through status_url', async () => {
  const image = Buffer.concat([Buffer.from('RIFF'), Buffer.alloc(4), Buffer.from('WEBPreused')]);
  const sha256 = crypto.createHash('sha256').update(image).digest('hex');
  const calls = [];
  const client = createImageMakeClient({
    baseUrl: 'http://127.0.0.1:8080', token: 'test-token', sleep: async () => {},
    fetchImpl: async (url) => {
      const path = new URL(url).pathname;
      calls.push(path);
      if (path === '/v1/generation-jobs') {
        return Response.json({
          job_id: 'job-reused',
          status: 'succeeded',
          status_url: '/v1/generation-jobs/job-reused',
        });
      }
      if (path === '/v1/generation-jobs/job-reused') {
        return Response.json({
          job_id: 'job-reused',
          status: 'succeeded',
          result: {
            download_url: '/v1/generation-jobs/job-reused/result',
            sha256,
          },
        });
      }
      if (path.endsWith('/result')) {
        return new Response(image, { headers: { 'content-type': 'image/webp' } });
      }
      throw new Error(`Unexpected request ${path}`);
    },
  });
  const result = await client.generateImage({
    prompt: 'reuse me',
    presetId: 'memind_dark_hero',
    idempotencyKey: 'imgreq-reused',
  });
  assert.equal(result.jobId, 'job-reused');
  assert.deepEqual(calls, [
    '/v1/generation-jobs',
    '/v1/generation-jobs/job-reused',
    '/v1/generation-jobs/job-reused/result',
  ]);
});

test('image_make client keeps polling while job is validating', async () => {
  const image = Buffer.concat([
    Buffer.from('RIFF'),
    Buffer.alloc(4),
    Buffer.from('WEBP'),
    Buffer.from('validating'),
  ]);
  const sha256 = crypto.createHash('sha256').update(image).digest('hex');
  let polls = 0;
  const client = createImageMakeClient({
    baseUrl: 'http://127.0.0.1:8080',
    token: 'test-token',
    sleep: async () => {},
    fetchImpl: async (url) => {
      const path = new URL(url).pathname;
      if (path === '/v1/generation-jobs') {
        return Response.json({ job_id: 'job-1', status: 'running' }, { status: 201 });
      }
      if (path === '/v1/generation-jobs/job-1') {
        polls += 1;
        if (polls === 1) {
          return Response.json({ job_id: 'job-1', status: 'validating' });
        }
        return Response.json({
          job_id: 'job-1',
          status: 'succeeded',
          result: {
            download_url: '/v1/generation-jobs/job-1/result',
            sha256,
            width: 1664,
            height: 928,
          },
        });
      }
      if (path.endsWith('/result')) {
        return new Response(image, {
          headers: { 'content-type': 'image/webp', 'x-artifact-sha256': sha256 },
        });
      }
      throw new Error(`Unexpected request ${path}`);
    },
  });
  const result = await client.generateImage({
    prompt: 'hangzhou snow',
    presetId: 'memind_dark_hero',
  });
  assert.equal(result.jobId, 'job-1');
  assert.equal(polls, 2);
});

test('image_make env client stays disabled until URL and token are both configured', () => {
  assert.equal(createImageMakeClientFromEnv({}), null);
  assert.equal(createImageMakeClientFromEnv({ IMAGE_MAKE_BASE_URL: 'http://127.0.0.1:8080' }), null);
});