var axios = require('../../../index');
var http = require('http');
var https = require('https');
var net = require('net');
var url = require('url');
var zlib = require('zlib');
var assert = require('assert');
var fs = require('fs');
var path = require('path');
var server, proxy;

describe('supports http with nodejs', function () {

  afterEach(function () {
    if (server) {
      server.close();
      server = null;
    }
    if (proxy) {
      proxy.close()
      proxy = null;
    }
    if (process.env.http_proxy) {
      delete process.env.http_proxy;
    }
    if (process.env.no_proxy) {
      delete process.env.no_proxy;
    }
  });

  it('should respect the timeout property', function (done) {

    server = http.createServer(function (req, res) {
      setTimeout(function () {
        res.end();
      }, 1000);
    }).listen(4444, function () {
      var success = false, failure = false;
      var error;

      axios.get('http://localhost:4444/', {
        timeout: 250
      }).then(function (res) {
        success = true;
      }).catch(function (err) {
        error = err;
        failure = true;
      });

      setTimeout(function () {
        assert.equal(success, false, 'request should not succeed');
        assert.equal(failure, true, 'request should fail');
        assert.equal(error.code, 'ECONNABORTED');
        assert.equal(error.message, 'timeout of 250ms exceeded');
        done();
      }, 300);
    });
  });

  it('should allow passing JSON', function (done) {
    var data = {
      firstName: 'Fred',
      lastName: 'Flintstone',
      emailAddr: 'fred@example.com'
    };

    server = http.createServer(function (req, res) {
      res.setHeader('Content-Type', 'application/json;charset=utf-8');
      res.end(JSON.stringify(data));
    }).listen(4444, function () {
      axios.get('http://localhost:4444/').then(function (res) {
        assert.deepEqual(res.data, data);
        done();
      });
    });
  });

  it('should allow passing JSON with BOM', function (done) {
    var data = {
      firstName: 'Fred',
      lastName: 'Flintstone',
      emailAddr: 'fred@example.com'
    };

    server = http.createServer(function (req, res) {
      res.setHeader('Content-Type', 'application/json;charset=utf-8');
      var bomBuffer = Buffer.from([0xEF, 0xBB, 0xBF])
      var jsonBuffer = Buffer.from(JSON.stringify(data));
      res.end(Buffer.concat([bomBuffer, jsonBuffer]));
    }).listen(4444, function () {
      axios.get('http://localhost:4444/').then(function (res) {
        assert.deepEqual(res.data, data);
        done();
      });
    });
  });

  it('should redirect', function (done) {
    var str = 'test response';

    server = http.createServer(function (req, res) {
      var parsed = url.parse(req.url);

      if (parsed.pathname === '/one') {
        res.setHeader('Location', '/two');
        res.statusCode = 302;
        res.end();
      } else {
        res.end(str);
      }
    }).listen(4444, function () {
      axios.get('http://localhost:4444/one').then(function (res) {
        assert.equal(res.data, str);
        assert.equal(res.request.path, '/two');
        done();
      });
    });
  });

  it('should not redirect', function (done) {
    server = http.createServer(function (req, res) {
      res.setHeader('Location', '/foo');
      res.statusCode = 302;
      res.end();
    }).listen(4444, function () {
      axios.get('http://localhost:4444/', {
        maxRedirects: 0,
        validateStatus: function () {
          return true;
        }
      }).then(function (res) {
        assert.equal(res.status, 302);
        assert.equal(res.headers['location'], '/foo');
        done();
      });
    });
  });

  it('should support max redirects', function (done) {
    var i = 1;
    server = http.createServer(function (req, res) {
      res.setHeader('Location', '/' + i);
      res.statusCode = 302;
      res.end();
      i++;
    }).listen(4444, function () {
      axios.get('http://localhost:4444/', {
        maxRedirects: 3
      }).catch(function (error) {
        done();
      });
    });
  });

  it('should preserve the HTTP verb on redirect', function (done) {
    server = http.createServer(function (req, res) {
      if (req.method.toLowerCase() !== "head") {
        res.statusCode = 400;
        res.end();
        return;
      }

      var parsed = url.parse(req.url);
      if (parsed.pathname === '/one') {
        res.setHeader('Location', '/two');
        res.statusCode = 302;
        res.end();
      } else {
        res.end();
      }
    }).listen(4444, function () {
      axios.head('http://localhost:4444/one').then(function (res) {
        assert.equal(res.status, 200);
        done();
      }).catch(function (err) {
        done(err);
      });
    });
  });

  it('should support transparent gunzip', function (done) {
    var data = {
      firstName: 'Fred',
      lastName: 'Flintstone',
      emailAddr: 'fred@example.com'
    };

    zlib.gzip(JSON.stringify(data), function (err, zipped) {

      server = http.createServer(function (req, res) {
        res.setHeader('Content-Type', 'application/json;charset=utf-8');
        res.setHeader('Content-Encoding', 'gzip');
        res.end(zipped);
      }).listen(4444, function () {
        axios.get('http://localhost:4444/').then(function (res) {
          assert.deepEqual(res.data, data);
          done();
        });
      });

    });
  });

  it('should support gunzip error handling', function (done) {
    server = http.createServer(function (req, res) {
      res.setHeader('Content-Type', 'application/json;charset=utf-8');
      res.setHeader('Content-Encoding', 'gzip');
      res.end('invalid response');
    }).listen(4444, function () {
      axios.get('http://localhost:4444/').catch(function (error) {
        done();
      });
    });
  });

  it('should support disabling automatic decompression of response data', function(done) {
    var data = 'Test data';

    zlib.gzip(data, function(err, zipped) {
      server = http.createServer(function(req, res) {
        res.setHeader('Content-Type', 'text/html;charset=utf-8');
        res.setHeader('Content-Encoding', 'gzip');
        res.end(zipped);
      }).listen(4444, function() {
        axios.get('http://localhost:4444/', {
          decompress: false,
          responseType: 'arraybuffer'

        }).then(function(res) {
          assert.equal(res.data.toString('base64'), zipped.toString('base64'));
          done();
        });
      });
    });
  });

  it('should support UTF8', function (done) {
    var str = Array(100000).join('ж');

    server = http.createServer(function (req, res) {
      res.setHeader('Content-Type', 'text/html; charset=UTF-8');
      res.end(str);
    }).listen(4444, function () {
      axios.get('http://localhost:4444/').then(function (res) {
        assert.equal(res.data, str);
        done();
      });
    });
  });

  it('should support basic auth', function (done) {
    server = http.createServer(function (req, res) {
      res.end(req.headers.authorization);
    }).listen(4444, function () {
      var user = 'foo';
      var headers = { Authorization: 'Bearer 1234' };
      axios.get('http://' + user + '@localhost:4444/', { headers: headers }).then(function (res) {
        var base64 = Buffer.from(user + ':', 'utf8').toString('base64');
        assert.equal(res.data, 'Basic ' + base64);
        done();
      });
    });
  });

  it('should support basic auth with a header', function (done) {
    server = http.createServer(function (req, res) {
      res.end(req.headers.authorization);
    }).listen(4444, function () {
      var auth = { username: 'foo', password: 'bar' };
      var headers = { Authorization: 'Bearer 1234' };
      axios.get('http://localhost:4444/', { auth: auth, headers: headers }).then(function (res) {
        var base64 = Buffer.from('foo:bar', 'utf8').toString('base64');
        assert.equal(res.data, 'Basic ' + base64);
        done();
      });
    });
  });

  it('should support max content length', function (done) {
    var str = Array(100000).join('ж');

    server = http.createServer(function (req, res) {
      res.setHeader('Content-Type', 'text/html; charset=UTF-8');
      res.end(str);
    }).listen(4444, function () {
      var success = false, failure = false, error;

      axios.get('http://localhost:4444/', {
        maxContentLength: 2000
      }).then(function (res) {
        success = true;
      }).catch(function (err) {
        error = err;
        failure = true;
      });

      setTimeout(function () {
        assert.equal(success, false, 'request should not succeed');
        assert.equal(failure, true, 'request should fail');
        assert.equal(error.message, 'maxContentLength size of 2000 exceeded');
        done();
      }, 100);
    });
  });

  it('should support max content length for redirected', function (done) {
    var str = Array(100000).join('ж');

    server = http.createServer(function (req, res) {
      var parsed = url.parse(req.url);

      if (parsed.pathname === '/two') {
        res.setHeader('Content-Type', 'text/html; charset=UTF-8');
        res.end(str);
      } else {
        res.setHeader('Location', '/two');
        res.statusCode = 302;
        res.end();
      }
    }).listen(4444, function () {
      var success = false, failure = false, error;

      axios.get('http://localhost:4444/one', {
        maxContentLength: 2000
      }).then(function (res) {
        success = true;
      }).catch(function (err) {
        error = err;
        failure = true;
      });

      setTimeout(function () {
        assert.equal(success, false, 'request should not succeed');
        assert.equal(failure, true, 'request should fail');
        assert.equal(error.message, 'maxContentLength size of 2000 exceeded');
        done();
      }, 100);
    });
  });

  it('should support max body length', function (done) {
    var data = Array(100000).join('ж');

    server = http.createServer(function (req, res) {
      res.setHeader('Content-Type', 'text/html; charset=UTF-8');
      res.end();
    }).listen(4444, function () {
      var success = false, failure = false, error;

      axios.post('http://localhost:4444/', {
        data: data
      }, {
        maxBodyLength: 2000
      }).then(function (res) {
        success = true;
      }).catch(function (err) {
        error = err;
        failure = true;
      });


      setTimeout(function () {
        assert.equal(success, false, 'request should not succeed');
        assert.equal(failure, true, 'request should fail');
        assert.equal(error.code, 'ERR_FR_MAX_BODY_LENGTH_EXCEEDED');
        assert.equal(error.message, 'Request body larger than maxBodyLength limit');
        done();
      }, 100);
    });
  });

  it('should support sockets', function (done) {
    // Different sockets for win32 vs darwin/linux
    var socketName = './test.sock';

    if (process.platform === 'win32') {
      socketName = '\\\\.\\pipe\\libuv-test';
    }

    server = net.createServer(function (socket) {
      socket.on('data', function () {
        socket.end('HTTP/1.1 200 OK\r\n\r\n');
      });
    }).listen(socketName, function () {
      axios({
        socketPath: socketName,
        url: '/'
      })
        .then(function (resp) {
          assert.equal(resp.status, 200);
          assert.equal(resp.statusText, 'OK');
          done();
        })
        .catch(function (error) {
          assert.ifError(error);
          done();
        });
    });
  });

  it('should support streams', function (done) {
    server = http.createServer(function (req, res) {
      req.pipe(res);
    }).listen(4444, function () {
      axios.post('http://localhost:4444/',
        fs.createReadStream(__filename), {
          responseType: 'stream'
        }).then(function (res) {
          var stream = res.data;
          var string = '';
          stream.on('data', function (chunk) {
            string += chunk.toString('utf8');
          });
          stream.on('end', function () {
            assert.equal(string, fs.readFileSync(__filename, 'utf8'));
            done();
          });
        });
    });
  });

  it('should pass errors for a failed stream', function (done) {
    var notExitPath = path.join(__dirname, 'does_not_exist');

    server = http.createServer(function (req, res) {
      req.pipe(res);
    }).listen(4444, function () {
      axios.post('http://localhost:4444/',
        fs.createReadStream(notExitPath)
      ).then(function (res) {
        assert.fail();
      }).catch(function (err) {
        assert.equal(err.message, `ENOENT: no such file or directory, open \'${notExitPath}\'`);
        done();
      });
    });
  });

  it('should support buffers', function (done) {
    var buf = Buffer.alloc(1024, 'x'); // Unsafe buffer < Buffer.poolSize (8192 bytes)
    server = http.createServer(function (req, res) {
      assert.equal(req.headers['content-length'], buf.length.toString());
      req.pipe(res);
    }).listen(4444, function () {
      axios.post('http://localhost:4444/',
        buf, {
          responseType: 'stream'
        }).then(function (res) {
          var stream = res.data;
          var string = '';
          stream.on('data', function (chunk) {
            string += chunk.toString('utf8');
          });
          stream.on('end', function () {
            assert.equal(string, buf.toString());
            done();
          });
        });
    });
  });

  it('should support HTTP proxies', function (done) {
    server = http.createServer(function (req, res) {
      res.setHeader('Content-Type', 'text/html; charset=UTF-8');
      res.end('12345');
    }).listen(4444, function () {
      proxy = http.createServer(function (request, response) {
        var parsed = url.parse(request.url);
        var opts = {
          host: parsed.hostname,
          port: parsed.port,
          path: parsed.path
        };

        http.get(opts, function (res) {
          var body = '';
          res.on('data', function (data) {
            body += data;
          });
          res.on('end', function () {
            response.setHeader('Content-Type', 'text/html; charset=UTF-8');
            response.end(body + '6789');
          });
        });

      }).listen(4000, function () {
        axios.get('http://localhost:4444/', {
          proxy: {
            host: 'localhost',
            port: 4000
          }
        }).then(function (res) {
          assert.equal(res.data, '123456789', 'should pass through proxy');
          done();
        });
      });
    });
  });

  it('should support HTTPS proxies', function (done) {
    var options = {
      key: fs.readFileSync(path.join(__dirname, 'key.pem')),
      cert: fs.readFileSync(path.join(__dirname, 'cert.pem'))
    };

    server = https.createServer(options, function (req, res) {
      res.setHeader('Content-Type', 'text/html; charset=UTF-8');
      res.end('12345');
    }).listen(4444, function () {
      proxy = https.createServer(options, function (request, response) {
        var parsed = url.parse(request.url);
        var opts = {
          host: parsed.hostname,
          port: parsed.port,
          path: parsed.path,
          protocol: parsed.protocol,
          rejectUnauthorized: false
        };

        https.get(opts, function (res) {
          var body = '';
          res.on('data', function (data) {
            body += data;
          });
          res.on('end', function () {
            response.setHeader('Content-Type', 'text/html; charset=UTF-8');
            response.end(body + '6789');
          });
        });
      }).listen(4000, function () {
        axios.get('https://localhost:4444/', {
          proxy: {
            host: 'localhost',
            port: 4000,
            protocol: 'https'
          },
          httpsAgent: new https.Agent({
            rejectUnauthorized: false
          })
        }).then(function (res) {
          assert.equal(res.data, '123456789', 'should pass through proxy');
          done();
        }).catch(function (err) {
          assert.fail(err);
          done()
        });
      });
    });
  });

  it('should not pass through disabled proxy', function (done) {
    // set the env variable
    process.env.http_proxy = 'http://does-not-exists.example.com:4242/';

    server = http.createServer(function (req, res) {
      res.setHeader('Content-Type', 'text/html; charset=UTF-8');
      res.end('123456789');
    }).listen(4444, function () {
      axios.get('http://localhost:4444/', {
        proxy: false
      }).then(function (res) {
        assert.equal(res.data, '123456789', 'should not pass through proxy');
        done();
      });
    });
  });

  it('should support proxy set via env var', function (done) {
    server = http.createServer(function (req, res) {
      res.setHeader('Content-Type', 'text/html; charset=UTF-8');
      res.end('4567');
    }).listen(4444, function () {
      proxy = http.createServer(function (request, response) {
        var parsed = url.parse(request.url);
        var opts = {
          host: parsed.hostname,
          port: parsed.port,
          path: parsed.path
        };

        http.get(opts, function (res) {
          var body = '';
          res.on('data', function (data) {
            body += data;
          });
          res.on('end', function () {
            response.setHeader('Content-Type', 'text/html; charset=UTF-8');
            response.end(body + '1234');
          });
        });

      }).listen(4000, function () {
        // set the env variable
        process.env.http_proxy = 'http://localhost:4000/';

        axios.get('http://localhost:4444/').then(function (res) {
          assert.equal(res.data, '45671234', 'should use proxy set by process.env.http_proxy');
          done();
        });
      });
    });
  });

  it('should support HTTPS proxy set via env var', function (done) {
    var options = {
      key: fs.readFileSync(path.join(__dirname, 'key.pem')),
      cert: fs.readFileSync(path.join(__dirname, 'cert.pem'))
    };

    server = https.createServer(options, function (req, res) {
      res.setHeader('Content-Type', 'text/html; charset=UTF-8');
      res.end('12345');
    }).listen(4444, function () {
      proxy = https.createServer(options, function (request, response) {
        var parsed = url.parse(request.url);
        var opts = {
          host: parsed.hostname,
          port: parsed.port,
          path: parsed.path,
          protocol: parsed.protocol,
          rejectUnauthorized: false
        };

        https.get(opts, function (res) {
          var body = '';
          res.on('data', function (data) {
            body += data;
          });
          res.on('end', function () {
            response.setHeader('Content-Type', 'text/html; charset=UTF-8');
            response.end(body + '6789');
          });
        });
      }).listen(4000, function () {
        process.env.https_proxy = 'https://localhost:4000/';

        axios.get('https://localhost:4444/', {
          httpsAgent: new https.Agent({
            rejectUnauthorized: false
          })
        }).then(function (res) {
          assert.equal(res.data, '123456789', 'should pass through proxy');
          done();
        }).catch(function (err) {
          assert.fail(err);
          done()
        }).finally(function () {
          process.env.https_proxy = ''
        });
      });
    });
  });

  it('should not use proxy for domains in no_proxy', function (done) {
    server = http.createServer(function (req, res) {
      res.setHeader('Content-Type', 'text/html; charset=UTF-8');
      res.end('4567');
    }).listen(4444, function () {
      proxy = http.createServer(function (request, response) {
        var parsed = url.parse(request.url);
        var opts = {
          host: parsed.hostname,
          port: parsed.port,
          path: parsed.path
        };

        http.get(opts, function (res) {
          var body = '';
          res.on('data', function (data) {
            body += data;
          });
          res.on('end', function () {
            response.setHeader('Content-Type', 'text/html; charset=UTF-8');
            response.end(body + '1234');
          });
        });

      }).listen(4000, function () {
        // set the env variable
        process.env.http_proxy = 'http://localhost:4000/';
        process.env.no_proxy = 'foo.com, localhost,bar.net , , quix.co';

        axios.get('http://localhost:4444/').then(function (res) {
          assert.equal(res.data, '4567', 'should not use proxy for domains in no_proxy');
          done();
        });
      });
    });
  });

  it('should use proxy for domains not in no_proxy', function (done) {
    server = http.createServer(function (req, res) {
      res.setHeader('Content-Type', 'text/html; charset=UTF-8');
      res.end('4567');
    }).listen(4444, function () {
      proxy = http.createServer(function (request, response) {
        var parsed = url.parse(request.url);
        var opts = {
          host: parsed.hostname,
          port: parsed.port,
          path: parsed.path
        };

        http.get(opts, function (res) {
          var body = '';
          res.on('data', function (data) {
            body += data;
          });
          res.on('end', function () {
            response.setHeader('Content-Type', 'text/html; charset=UTF-8');
            response.end(body + '1234');
          });
        });

      }).listen(4000, function () {
        // set the env variable
        process.env.http_proxy = 'http://localhost:4000/';
        process.env.no_proxy = 'foo.com, ,bar.net , quix.co';

        axios.get('http://localhost:4444/').then(function (res) {
          assert.equal(res.data, '45671234', 'should use proxy for domains not in no_proxy');
          done();
        });
      });
    });
  });

  it('should support HTTP proxy auth', function (done) {
    server = http.createServer(function (req, res) {
      res.end();
    }).listen(4444, function () {
      proxy = http.createServer(function (request, response) {
        var parsed = url.parse(request.url);
        var opts = {
          host: parsed.hostname,
          port: parsed.port,
          path: parsed.path
        };
        var proxyAuth = request.headers['proxy-authorization'];

        http.get(opts, function (res) {
          var body = '';
          res.on('data', function (data) {
            body += data;
          });
          res.on('end', function () {
            response.setHeader('Content-Type', 'text/html; charset=UTF-8');
            response.end(proxyAuth);
          });
        });

      }).listen(4000, function () {
        axios.get('http://localhost:4444/', {
          proxy: {
            host: 'localhost',
            port: 4000,
            auth: {
              username: 'user',
              password: 'pass'
            }
          }
        }).then(function (res) {
          var base64 = Buffer.from('user:pass', 'utf8').toString('base64');
          assert.equal(res.data, 'Basic ' + base64, 'should authenticate to the proxy');
          done();
        });
      });
    });
  });

  it('should support proxy auth from env', function (done) {
    server = http.createServer(function (req, res) {
      res.end();
    }).listen(4444, function () {
      proxy = http.createServer(function (request, response) {
        var parsed = url.parse(request.url);
        var opts = {
          host: parsed.hostname,
          port: parsed.port,
          path: parsed.path
        };
        var proxyAuth = request.headers['proxy-authorization'];

        http.get(opts, function (res) {
          var body = '';
          res.on('data', function (data) {
            body += data;
          });
          res.on('end', function () {
            response.setHeader('Content-Type', 'text/html; charset=UTF-8');
            response.end(proxyAuth);
          });
        });

      }).listen(4000, function () {
        process.env.http_proxy = 'http://user:pass@localhost:4000/';

        axios.get('http://localhost:4444/').then(function (res) {
          var base64 = Buffer.from('user:pass', 'utf8').toString('base64');
          assert.equal(res.data, 'Basic ' + base64, 'should authenticate to the proxy set by process.env.http_proxy');
          done();
        });
      });
    });
  });

  it('should support proxy auth with header', function (done) {
    server = http.createServer(function (req, res) {
      res.end();
    }).listen(4444, function () {
      proxy = http.createServer(function (request, response) {
        var parsed = url.parse(request.url);
        var opts = {
          host: parsed.hostname,
          port: parsed.port,
          path: parsed.path
        };
        var proxyAuth = request.headers['proxy-authorization'];

        http.get(opts, function (res) {
          var body = '';
          res.on('data', function (data) {
            body += data;
          });
          res.on('end', function () {
            response.setHeader('Content-Type', 'text/html; charset=UTF-8');
            response.end(proxyAuth);
          });
        });

      }).listen(4000, function () {
        axios.get('http://localhost:4444/', {
          proxy: {
            host: 'localhost',
            port: 4000,
            auth: {
              username: 'user',
              password: 'pass'
            }
          },
          headers: {
            'Proxy-Authorization': 'Basic abc123'
          }
        }).then(function (res) {
          var base64 = Buffer.from('user:pass', 'utf8').toString('base64');
          assert.equal(res.data, 'Basic ' + base64, 'should authenticate to the proxy');
          done();
        });
      });
    });
  });

  it('should support cancel', function (done) {
    var source = axios.CancelToken.source();
    server = http.createServer(function (req, res) {
      // call cancel() when the request has been sent, but a response has not been received
      source.cancel('Operation has been canceled.');
    }).listen(4444, function () {
      axios.get('http://localhost:4444/', {
        cancelToken: source.token
      }).catch(function (thrown) {
        assert.ok(thrown instanceof axios.Cancel, 'Promise must be rejected with a Cancel obejct');
        assert.equal(thrown.message, 'Operation has been canceled.');
        done();
      });
    });
  });

  it('should combine baseURL and url', function (done) {
    server = http.createServer(function (req, res) {
      res.end();
    }).listen(4444, function () {
      axios.get('/foo', {
        baseURL: 'http://localhost:4444/',
      }).then(function (res) {
        assert.equal(res.config.baseURL, 'http://localhost:4444/');
        assert.equal(res.config.url, '/foo');
        done();
      });
    });
  });
});