"use strict";

const _ = require('lodash');
const arch = require('arch');
const os = require('os');
const ospath = require('ospath');
const crypto = require('crypto');
const la = require('lazy-ass');
const is = require('check-more-types');
const tty = require('tty');
const path = require('path');
const isCi = require('is-ci');
const execa = require('execa');
const getos = require('getos');
const chalk = require('chalk');
const Promise = require('bluebird');
const cachedir = require('cachedir');
const logSymbols = require('log-symbols');
const executable = require('executable');
const {
  stripIndent
} = require('common-tags');
const supportsColor = require('supports-color');
const isInstalledGlobally = require('is-installed-globally');
const logger = require('./logger');
const debug = require('debug')('cypress:cli');
const fs = require('./fs');
const pkg = require(path.join(__dirname, '..', 'package.json'));
const issuesUrl = 'https://github.com/cypress-io/cypress/issues';
const getosAsync = Promise.promisify(getos);

/**
 * Returns SHA512 of a file
 *
 * Implementation lifted from https://github.com/sindresorhus/hasha
 * but without bringing that dependency (since hasha is Node v8+)
 */
const getFileChecksum = filename => {
  la(is.unemptyString(filename), 'expected filename', filename);
  const hashStream = () => {
    const s = crypto.createHash('sha512');
    s.setEncoding('hex');
    return s;
  };
  return new Promise((resolve, reject) => {
    const stream = fs.createReadStream(filename);
    stream.on('error', reject).pipe(hashStream()).on('error', reject).on('finish', function () {
      resolve(this.read());
    });
  });
};
const getFileSize = filename => {
  la(is.unemptyString(filename), 'expected filename', filename);
  return fs.statAsync(filename).get('size');
};
const isBrokenGtkDisplayRe = /Gtk: cannot open display/;
const stringify = val => {
  return _.isObject(val) ? JSON.stringify(val) : val;
};
function normalizeModuleOptions(options = {}) {
  return _.mapValues(options, stringify);
}

/**
 * Returns true if the platform is Linux. We do a lot of different
 * stuff on Linux (like Xvfb) and it helps to has readable code
 */
const isLinux = () => {
  return os.platform() === 'linux';
};

/**
   * If the DISPLAY variable is set incorrectly, when trying to spawn
   * Cypress executable we get an error like this:
  ```
  [1005:0509/184205.663837:WARNING:browser_main_loop.cc(258)] Gtk: cannot open display: 99
  ```
   */
const isBrokenGtkDisplay = str => {
  return isBrokenGtkDisplayRe.test(str);
};
const isPossibleLinuxWithIncorrectDisplay = () => {
  return isLinux() && process.env.DISPLAY;
};
const logBrokenGtkDisplayWarning = () => {
  debug('Cypress exited due to a broken gtk display because of a potential invalid DISPLAY env... retrying after starting Xvfb');

  // if we get this error, we are on Linux and DISPLAY is set
  logger.warn(stripIndent`

    ${logSymbols.warning} Warning: Cypress failed to start.

    This is likely due to a misconfigured DISPLAY environment variable.

    DISPLAY was set to: "${process.env.DISPLAY}"

    Cypress will attempt to fix the problem and rerun.
  `);
  logger.warn();
};
function stdoutLineMatches(expectedLine, stdout) {
  const lines = stdout.split('\n').map(val => val.trim());
  return lines.some(line => line === expectedLine);
}

/**
 * Confirms if given value is a valid CYPRESS_INTERNAL_ENV value. Undefined values
 * are valid, because the system can set the default one.
 *
 * @param {string} value
 * @example util.isValidCypressInternalEnvValue(process.env.CYPRESS_INTERNAL_ENV)
 */
function isValidCypressInternalEnvValue(value) {
  if (_.isUndefined(value)) {
    // will get default value
    return true;
  }

  // names of config environments, see "packages/server/config/app.json"
  const names = ['development', 'test', 'staging', 'production'];
  return _.includes(names, value);
}

/**
 * Confirms if given value is a non-production CYPRESS_INTERNAL_ENV value.
 * Undefined values are valid, because the system can set the default one.
 *
 * @param {string} value
 * @example util.isNonProductionCypressInternalEnvValue(process.env.CYPRESS_INTERNAL_ENV)
 */
function isNonProductionCypressInternalEnvValue(value) {
  return !_.isUndefined(value) && value !== 'production';
}

/**
 * Prints NODE_OPTIONS using debug() module, but only
 * if DEBUG=cypress... is set
 */
function printNodeOptions(log = debug) {
  if (!log.enabled) {
    return;
  }
  if (process.env.NODE_OPTIONS) {
    log('NODE_OPTIONS=%s', process.env.NODE_OPTIONS);
  } else {
    log('NODE_OPTIONS is not set');
  }
}

/**
 * Removes double quote characters
 * from the start and end of the given string IF they are both present
 *
 * @param {string} str Input string
 * @returns {string} Trimmed string or the original string if there are no double quotes around it.
 * @example
  ```
  dequote('"foo"')
  // returns string 'foo'
  dequote('foo')
  // returns string 'foo'
  ```
 */
const dequote = str => {
  la(is.string(str), 'expected a string to remove double quotes', str);
  if (str.length > 1 && str[0] === '"' && str[str.length - 1] === '"') {
    return str.substr(1, str.length - 2);
  }
  return str;
};
const parseOpts = opts => {
  opts = _.pick(opts, 'autoCancelAfterFailures', 'browser', 'cachePath', 'cacheList', 'cacheClear', 'cachePrune', 'ciBuildId', 'ct', 'component', 'config', 'configFile', 'cypressVersion', 'destination', 'detached', 'dev', 'e2e', 'exit', 'env', 'force', 'global', 'group', 'headed', 'headless', 'inspect', 'inspectBrk', 'key', 'path', 'parallel', 'port', 'project', 'quiet', 'reporter', 'reporterOptions', 'record', 'runnerUi', 'runProject', 'spec', 'tag');
  if (opts.exit) {
    opts = _.omit(opts, 'exit');
  }

  // some options might be quoted - which leads to unexpected results
  // remove double quotes from certain options
  const cleanOpts = {
    ...opts
  };
  const toDequote = ['group', 'ciBuildId'];
  for (const prop of toDequote) {
    if (_.has(opts, prop)) {
      cleanOpts[prop] = dequote(opts[prop]);
    }
  }
  debug('parsed cli options %o', cleanOpts);
  return cleanOpts;
};

/**
 * Copy of packages/server/lib/browsers/utils.ts
 * because we need same functionality in CLI to show the path :(
 */
const getApplicationDataFolder = (...paths) => {
  const {
    env
  } = process;

  // allow overriding the app_data folder
  let folder = env.CYPRESS_CONFIG_ENV || env.CYPRESS_INTERNAL_ENV || 'development';
  const PRODUCT_NAME = pkg.productName || pkg.name;
  const OS_DATA_PATH = ospath.data();
  const ELECTRON_APP_DATA_PATH = path.join(OS_DATA_PATH, PRODUCT_NAME);
  if (process.env.CYPRESS_INTERNAL_E2E_TESTING_SELF) {
    folder = `${folder}-e2e-test`;
  }
  const p = path.join(ELECTRON_APP_DATA_PATH, 'cy', folder, ...paths);
  return p;
};
const util = {
  normalizeModuleOptions,
  parseOpts,
  isValidCypressInternalEnvValue,
  isNonProductionCypressInternalEnvValue,
  printNodeOptions,
  isCi() {
    return isCi;
  },
  getEnvOverrides(options = {}) {
    return _.chain({}).extend(util.getEnvColors()).extend(util.getForceTty()).omitBy(_.isUndefined) // remove undefined values
    .mapValues(value => {
      // stringify to 1 or 0
      return value ? '1' : '0';
    }).extend(util.getOriginalNodeOptions()).value();
  },
  getOriginalNodeOptions() {
    const opts = {};
    if (process.env.NODE_OPTIONS) {
      opts.ORIGINAL_NODE_OPTIONS = process.env.NODE_OPTIONS;
    }
    return opts;
  },
  getForceTty() {
    return {
      FORCE_STDIN_TTY: util.isTty(process.stdin.fd),
      FORCE_STDOUT_TTY: util.isTty(process.stdout.fd),
      FORCE_STDERR_TTY: util.isTty(process.stderr.fd)
    };
  },
  getEnvColors() {
    const sc = util.supportsColor();
    return {
      FORCE_COLOR: sc,
      DEBUG_COLORS: sc,
      MOCHA_COLORS: sc ? true : undefined
    };
  },
  isTty(fd) {
    return tty.isatty(fd);
  },
  supportsColor() {
    // if we've been explicitly told not to support
    // color then turn this off
    if (process.env.NO_COLOR) {
      return false;
    }

    // https://github.com/cypress-io/cypress/issues/1747
    // always return true in CI providers
    if (process.env.CI) {
      return true;
    }

    // ensure that both stdout and stderr support color
    return Boolean(supportsColor.stdout) && Boolean(supportsColor.stderr);
  },
  cwd() {
    return process.cwd();
  },
  pkgBuildInfo() {
    return pkg.buildInfo;
  },
  pkgVersion() {
    return pkg.version;
  },
  exit(code) {
    process.exit(code);
  },
  logErrorExit1(err) {
    logger.error(err.message);
    process.exit(1);
  },
  dequote,
  titleize(...args) {
    // prepend first arg with space
    // and pad so that all messages line up
    args[0] = _.padEnd(` ${args[0]}`, 24);

    // get rid of any falsy values
    args = _.compact(args);
    return chalk.blue(...args);
  },
  calculateEta(percent, elapsed) {
    // returns the number of seconds remaining

    // if we're at 100% already just return 0
    if (percent === 100) {
      return 0;
    }

    // take the percentage and divide by one
    // and multiple that against elapsed
    // subtracting what's already elapsed
    return elapsed * (1 / (percent / 100)) - elapsed;
  },
  convertPercentToPercentage(num) {
    // convert a percent with values between 0 and 1
    // with decimals, so that it is between 0 and 100
    // and has no decimal places
    return Math.round(_.isFinite(num) ? num * 100 : 0);
  },
  secsRemaining(eta) {
    // calculate the seconds reminaing with no decimal places
    return (_.isFinite(eta) ? eta / 1000 : 0).toFixed(0);
  },
  setTaskTitle(task, title, renderer) {
    // only update the renderer title when not running in CI
    if (renderer === 'default' && task.title !== title) {
      task.title = title;
    }
  },
  isInstalledGlobally() {
    return isInstalledGlobally;
  },
  isSemver(str) {
    return /^(\d+\.)?(\d+\.)?(\*|\d+)$/.test(str);
  },
  isExecutableAsync(filePath) {
    return Promise.resolve(executable(filePath));
  },
  isLinux,
  getOsVersionAsync() {
    return Promise.try(() => {
      if (isLinux()) {
        return getosAsync().then(osInfo => {
          return [osInfo.dist, osInfo.release].join(' - ');
        }).catch(() => {
          return os.release();
        });
      }
      return os.release();
    });
  },
  async getPlatformInfo() {
    const [version, osArch] = await Promise.all([util.getOsVersionAsync(), this.getRealArch()]);
    return stripIndent`
      Platform: ${os.platform()}-${osArch} (${version})
      Cypress Version: ${util.pkgVersion()}
    `;
  },
  _cachedArch: undefined,
  /**
   * Attempt to return the real system arch (not process.arch, which is only the Node binary's arch)
   */
  async getRealArch() {
    if (this._cachedArch) return this._cachedArch;
    async function _getRealArch() {
      const osPlatform = os.platform();
      // eslint-disable-next-line no-restricted-syntax
      const osArch = os.arch();
      debug('detecting arch %o', {
        osPlatform,
        osArch
      });
      if (osArch === 'arm64') return 'arm64';
      if (osPlatform === 'darwin') {
        // could possibly be x64 node on arm64 darwin, check if we are being translated by Rosetta
        // https://stackoverflow.com/a/65347893/3474615
        const {
          stdout
        } = await execa('sysctl', ['-n', 'sysctl.proc_translated']).catch(() => '');
        debug('rosetta check result: %o', {
          stdout
        });
        if (stdout === '1') return 'arm64';
      }
      if (osPlatform === 'linux') {
        // could possibly be x64 node on arm64 linux, check the "machine hardware name"
        // list of names for reference: https://stackoverflow.com/a/45125525/3474615
        const {
          stdout
        } = await execa('uname', ['-m']).catch(() => '');
        debug('arm uname -m result: %o ', {
          stdout
        });
        if (['aarch64_be', 'aarch64', 'armv8b', 'armv8l'].includes(stdout)) return 'arm64';
      }

      // eslint-disable-next-line no-restricted-syntax
      const pkgArch = arch();
      if (pkgArch === 'x86') return 'ia32';
      return pkgArch;
    }
    return this._cachedArch = await _getRealArch();
  },
  // attention:
  // when passing relative path to NPM post install hook, the current working
  // directory is set to the `node_modules/cypress` folder
  // the user is probably passing relative path with respect to root package folder
  formAbsolutePath(filename) {
    if (path.isAbsolute(filename)) {
      return filename;
    }
    return path.join(process.cwd(), '..', '..', filename);
  },
  getEnv(varName, trim) {
    la(is.unemptyString(varName), 'expected environment variable name, not', varName);
    const configVarName = `npm_config_${varName}`;
    const configVarNameLower = configVarName.toLowerCase();
    const packageConfigVarName = `npm_package_config_${varName}`;
    let result;
    if (process.env.hasOwnProperty(varName)) {
      debug(`Using ${varName} from environment variable`);
      result = process.env[varName];
    } else if (process.env.hasOwnProperty(configVarName)) {
      debug(`Using ${varName} from npm config`);
      result = process.env[configVarName];
    } else if (process.env.hasOwnProperty(configVarNameLower)) {
      debug(`Using ${varName.toLowerCase()} from npm config`);
      result = process.env[configVarNameLower];
    } else if (process.env.hasOwnProperty(packageConfigVarName)) {
      debug(`Using ${varName} from package.json config`);
      result = process.env[packageConfigVarName];
    }

    // environment variables are often set double quotes to escape characters
    // and on Windows it can lead to weird things: for example
    //  set FOO="C:\foo.txt" && node -e "console.log('>>>%s<<<', process.env.FOO)"
    // will print
    //    >>>"C:\foo.txt" <<<
    // see https://github.com/cypress-io/cypress/issues/4506#issuecomment-506029942
    // so for sanity sake we should first trim whitespace characters and remove
    // double quotes around environment strings if the caller is expected to
    // use this environment string as a file path
    return trim ? dequote(_.trim(result)) : result;
  },
  getCacheDir() {
    return cachedir('Cypress');
  },
  isPostInstall() {
    return process.env.npm_lifecycle_event === 'postinstall';
  },
  exec: execa,
  stdoutLineMatches,
  issuesUrl,
  isBrokenGtkDisplay,
  logBrokenGtkDisplayWarning,
  isPossibleLinuxWithIncorrectDisplay,
  getGitHubIssueUrl(number) {
    la(is.positive(number), 'github issue should be a positive number', number);
    la(_.isInteger(number), 'github issue should be an integer', number);
    return `${issuesUrl}/${number}`;
  },
  getFileChecksum,
  getFileSize,
  getApplicationDataFolder
};
module.exports = util;