import { describe, it, afterEach, mock } from 'node:test';
import assert from 'node:assert/strict';
import axios from 'axios';

afterEach(() => mock.restoreAll());

describe('gitea', async () => {
  const { getPRDiff, filterDiff, postComment } = await import('./gitea.js');

  it('getPRDiff calls Gitea diff API with Authorization header', async () => {
    let capturedUrl, capturedOpts;
    mock.method(axios, 'get', async (url, opts) => {
      capturedUrl = url;
      capturedOpts = opts;
      return { data: 'diff content' };
    });
    const result = await getPRDiff();
    assert.equal(result, 'diff content');
    assert.ok(capturedUrl.includes('/api/v1/repos/'));
    assert.ok(capturedUrl.endsWith('.diff'));
    assert.ok(capturedOpts.headers['Authorization'].startsWith('token '));
    assert.equal(capturedOpts.headers['Content-Type'], 'application/json');
  });

  it('postComment calls Gitea issues comments API with body', async () => {
    let capturedUrl, capturedBody, capturedOpts;
    mock.method(axios, 'post', async (url, body, opts) => {
      capturedUrl = url;
      capturedBody = body;
      capturedOpts = opts;
      return { data: { id: 1 } };
    });
    const result = await postComment('hello world');
    assert.deepEqual(result, { id: 1 });
    assert.ok(capturedUrl.includes('/api/v1/repos/'));
    assert.ok(capturedUrl.endsWith('/comments'));
    assert.equal(capturedBody.body, 'hello world');
    assert.ok(capturedOpts.headers['Authorization'].startsWith('token '));
  });

  it('does not set httpsAgent by default (GITEA_SKIP_TLS_VERIFY not true)', async () => {
    let capturedOpts;
    mock.method(axios, 'get', async (_url, opts) => {
      capturedOpts = opts;
      return { data: '' };
    });
    await getPRDiff();
    assert.equal(capturedOpts.httpsAgent, undefined);
  });

  it('getPRDiff propagates axios errors', async () => {
    mock.method(axios, 'get', async () => { throw new Error('network error'); });
    await assert.rejects(() => getPRDiff(), /network error/);
  });

  it('postComment propagates axios errors', async () => {
    mock.method(axios, 'post', async () => { throw new Error('api error'); });
    await assert.rejects(() => postComment('test'), /api error/);
  });
});

describe('filterDiff', async () => {
  const { filterDiff } = await import('./gitea.js');

  const block = (file) => `diff --git a/${file} b/${file}\n--- a/${file}\n+++ b/${file}\n@@ -1 +1 @@\n-old\n+new\n`;

  it('filters out configured folder blocks', () => {
    const diff = block('.gitea/workflows/review.yaml') + block('.amazonq/rules/triage-findings.md') + block('src/index.js');
    const result = filterDiff(diff, ['.gitea/', '.amazonq/']);
    assert.ok(!result.includes('.gitea/'));
    assert.ok(!result.includes('.amazonq/'));
    assert.ok(result.includes('src/index.js'));
  });

  it('filters out configured top-level file blocks', () => {
    const diff = block('README.md') + block('src/index.js');
    const result = filterDiff(diff, ['README.md', 'TODO.md']);
    assert.ok(!result.includes('README.md'));
    assert.ok(result.includes('src/index.js'));
  });

  it('returns empty string when all blocks are excluded', () => {
    const diff = block('.gitea/workflows/review.yaml') + block('.gitea/ai-review/findings.json') + block('CLAUDE.md');
    const result = filterDiff(diff, ['.gitea/', 'CLAUDE.md']);
    assert.equal(result, '');
  });

  it('returns empty string for empty diff', () => {
    assert.equal(filterDiff('', ['.gitea/']), '');
  });
});