const request = require('supertest');
const express = require('express');
const helmet = require('helmet');
const badgeRouter = require('../src/api/badge');

const app = express();
app.use(helmet({ crossOriginResourcePolicy: false }));
app.use(badgeRouter);

describe('GET /badge', () => {
  it('should return SVG with default params', async () => {
    const res = await request(app).get('/badge');
    const resBody = Buffer.from(res.body).toString();
    expect(res.statusCode).toBe(200);
    expect(res.headers['content-type']).toMatch(/image\/svg\+xml/);
    expect(resBody).toContain('<svg');
    expect(resBody).toContain('<rect');
  });

  it('should use custom icon and label', async () => {
    const res = await request(app).get('/badge?icon=github&label=GitHub');
    const resBody = Buffer.from(res.body).toString();
    expect(res.statusCode).toBe(200);
    expect(resBody).toContain('GitHub');
    expect(resBody).toContain('<svg');
  });

  it('should use label from SVG title if label param is missing', async () => {
    const res = await request(app).get('/badge?icon=github');
    const resBody = Buffer.from(res.body).toString();
    expect(res.statusCode).toBe(200);
    expect(resBody).toContain('<svg');
    // The title from the SVG should be present as label
    expect(resBody.toLowerCase()).toContain('github');
  });

  it('should set icon background to transparent', async () => {
    const res = await request(app).get('/badge?bgicon=none');
    const resBody = Buffer.from(res.body).toString();
    expect(res.statusCode).toBe(200);
    expect(resBody).toContain('fill="none"');
  });

  it('should set label background to transparent', async () => {
    const res = await request(app).get('/badge?bglabel=none');
    const resBody = Buffer.from(res.body).toString();
    expect(res.statusCode).toBe(200);
    expect(resBody).toContain('fill="none"');
  });

  it('should use flat style with rounded corners', async () => {
    const res = await request(app).get('/badge?style=flat');
    const resBody = Buffer.from(res.body).toString();
    expect(res.statusCode).toBe(200);
    expect(resBody).toContain('rx="');
  });

  it('should handle labelpos left', async () => {
    const res = await request(app).get('/badge?labelpos=left');
    const resBody = Buffer.from(res.body).toString();
    expect(res.statusCode).toBe(200);
    expect(resBody).toContain('<rect');
    expect(resBody).toContain('<text');
  });

  it('should handle labelpos above', async () => {
    const res = await request(app).get('/badge?labelpos=above');
    const resBody = Buffer.from(res.body).toString();
    expect(res.statusCode).toBe(200);
    expect(resBody).toContain('<rect');
    expect(resBody).toContain('<text');
  });

  it('should handle labelpos below', async () => {
    const res = await request(app).get('/badge?labelpos=below');
    const resBody = Buffer.from(res.body).toString();
    expect(res.statusCode).toBe(200);
    expect(resBody).toContain('<rect');
    expect(resBody).toContain('<text');
  });

  it('should handle custom fontweight', async () => {
    const res = await request(app).get('/badge?fontweight=bold');
    const resBody = Buffer.from(res.body).toString();
    expect(res.statusCode).toBe(200);
    expect(resBody).toContain('font-weight="bold"');
  });

  // Test not applicable, since icon is not real should handle 404 from CDN
  it('should return 404 for unknown icon', async () => {
    const res = await request(app).get('/badge?icon=notarealicon');
    expect(res.statusCode).toBe(404);
  });
});