"use strict";

const chalk = require('chalk');

const {
  stripIndent,
  stripIndents
} = require('common-tags');

const {
  merge
} = require('ramda');

const la = require('lazy-ass');

const is = require('check-more-types');

const util = require('./util');

const state = require('./tasks/state');

const docsUrl = 'https://on.cypress.io';
const requiredDependenciesUrl = `${docsUrl}/required-dependencies`;
const runDocumentationUrl = `${docsUrl}/cypress-run`; // TODO it would be nice if all error objects could be enforced via types
// to only have description + solution properties

const hr = '----------';
const genericErrorSolution = stripIndent`
  Search for an existing issue or open a GitHub issue at

    ${chalk.blue(util.issuesUrl)}
`; // common errors Cypress application can encounter

const unknownError = {
  description: 'Unknown Cypress CLI error',
  solution: genericErrorSolution
};
const invalidRunProjectPath = {
  description: 'Invalid --project path',
  solution: stripIndent`
    Please provide a valid project path.

    Learn more about ${chalk.cyan('cypress run')} at:

      ${chalk.blue(runDocumentationUrl)}
  `
};
const failedDownload = {
  description: 'The Cypress App could not be downloaded.',
  solution: stripIndent`
  Does your workplace require a proxy to be used to access the Internet? If so, you must configure the HTTP_PROXY environment variable before downloading Cypress. Read more: https://on.cypress.io/proxy-configuration

  Otherwise, please check network connectivity and try again:`
};
const failedUnzip = {
  description: 'The Cypress App could not be unzipped.',
  solution: genericErrorSolution
};

const missingApp = binaryDir => {
  return {
    description: `No version of Cypress is installed in: ${chalk.cyan(binaryDir)}`,
    solution: stripIndent`
    \nPlease reinstall Cypress by running: ${chalk.cyan('cypress install')}
  `
  };
};

const binaryNotExecutable = executable => {
  return {
    description: `Cypress cannot run because this binary file does not have executable permissions here:\n\n${executable}`,
    solution: stripIndent`\n
    Reasons this may happen:

    - node was installed as 'root' or with 'sudo'
    - the cypress npm package as 'root' or with 'sudo'

    Please check that you have the appropriate user permissions.

    You can also try clearing the cache with 'cypress cache clear' and reinstalling. 
  `
  };
};

const notInstalledCI = executable => {
  return {
    description: 'The cypress npm package is installed, but the Cypress binary is missing.',
    solution: stripIndent`\n
    We expected the binary to be installed here: ${chalk.cyan(executable)}

    Reasons it may be missing:

    - You're caching 'node_modules' but are not caching this path: ${util.getCacheDir()}
    - You ran 'npm install' at an earlier build step but did not persist: ${util.getCacheDir()}

    Properly caching the binary will fix this error and avoid downloading and unzipping Cypress.

    Alternatively, you can run 'cypress install' to download the binary again.

    ${chalk.blue('https://on.cypress.io/not-installed-ci-error')}
  `
  };
};

const nonZeroExitCodeXvfb = {
  description: 'Xvfb exited with a non zero exit code.',
  solution: stripIndent`
    There was a problem spawning Xvfb.

    This is likely a problem with your system, permissions, or installation of Xvfb.
    `
};
const missingXvfb = {
  description: 'Your system is missing the dependency: Xvfb',
  solution: stripIndent`
    Install Xvfb and run Cypress again.

    Read our documentation on dependencies for more information:

      ${chalk.blue(requiredDependenciesUrl)}

    If you are using Docker, we provide containers with all required dependencies installed.
    `
};

const smokeTestFailure = (smokeTestCommand, timedOut) => {
  return {
    description: `Cypress verification ${timedOut ? 'timed out' : 'failed'}.`,
    solution: stripIndent`
    This command failed with the following output:

    ${smokeTestCommand}

    `
  };
};

const invalidSmokeTestDisplayError = {
  code: 'INVALID_SMOKE_TEST_DISPLAY_ERROR',
  description: 'Cypress verification failed.',

  solution(msg) {
    return stripIndent`
      Cypress failed to start after spawning a new Xvfb server.

      The error logs we received were:

      ${hr}

      ${msg}

      ${hr}

      This may be due to a missing library or dependency. ${chalk.blue(requiredDependenciesUrl)}

      Please refer to the error above for more detail.
    `;
  }

};
const missingDependency = {
  description: 'Cypress failed to start.',
  // this message is too Linux specific
  solution: stripIndent`
    This may be due to a missing library or dependency. ${chalk.blue(requiredDependenciesUrl)}

    Please refer to the error below for more details.
  `
};
const invalidCacheDirectory = {
  description: 'Cypress cannot write to the cache directory due to file permissions',
  solution: stripIndent`
    See discussion and possible solutions at
    ${chalk.blue(util.getGitHubIssueUrl(1281))}
  `
};
const versionMismatch = {
  description: 'Installed version does not match package version.',
  solution: 'Install Cypress and verify app again'
};
const incompatibleHeadlessFlags = {
  description: '`--headed` and `--headless` cannot both be passed.',
  solution: 'Either pass `--headed` or `--headless`, but not both.'
};
const solutionUnknown = stripIndent`
  Please search Cypress documentation for possible solutions:

    ${chalk.blue(docsUrl)}

  Check if there is a GitHub issue describing this crash:

    ${chalk.blue(util.issuesUrl)}

  Consider opening a new issue.
`;
const unexpected = {
  description: 'An unexpected error occurred while verifying the Cypress executable.',
  solution: solutionUnknown
};
const invalidCypressEnv = {
  description: chalk.red('The environment variable with the reserved name "CYPRESS_INTERNAL_ENV" is set.'),
  solution: chalk.red('Unset the "CYPRESS_INTERNAL_ENV" environment variable and run Cypress again.'),
  exitCode: 11
};
const invalidTestingType = {
  description: 'Invalid testingType',
  solution: `Please provide a valid testingType. Valid test types are ${chalk.cyan('\'e2e\'')} and ${chalk.cyan('\'component\'')}.`
};
/**
 * This error happens when CLI detects that the child Test Runner process
 * was killed with a signal, like SIGBUS
 * @see https://github.com/cypress-io/cypress/issues/5808
 * @param {'close'|'event'} eventName Child close event name
 * @param {string} signal Signal that closed the child process, like "SIGBUS"
*/

const childProcessKilled = (eventName, signal) => {
  return {
    description: `The Test Runner unexpectedly exited via a ${chalk.cyan(eventName)} event with signal ${chalk.cyan(signal)}`,
    solution: solutionUnknown
  };
};

const CYPRESS_RUN_BINARY = {
  notValid: value => {
    const properFormat = `**/${state.getPlatformExecutable()}`;
    return {
      description: `Could not run binary set by environment variable: CYPRESS_RUN_BINARY=${value}`,
      solution: `Ensure the environment variable is a path to the Cypress binary, matching ${properFormat}`
    };
  }
};

function addPlatformInformation(info) {
  return util.getPlatformInfo().then(platform => {
    return merge(info, {
      platform
    });
  });
}
/**
 * Given an error object (see the errors above), forms error message text with details,
 * then resolves with Error instance you can throw or reject with.
 * @param {object} errorObject
 * @returns {Promise<Error>} resolves with an Error
 * @example
  ```js
  // inside a Promise with "resolve" and "reject"
  const errorObject = childProcessKilled('exit', 'SIGKILL')
  return getError(errorObject).then(reject)
  ```
 */


function getError(errorObject) {
  return formErrorText(errorObject).then(errorMessage => {
    const err = new Error(errorMessage);
    err.known = true;
    return err;
  });
}
/**
 * Forms nice error message with error and platform information,
 * and if possible a way to solve it. Resolves with a string.
 */


function formErrorText(info, msg, prevMessage) {
  return addPlatformInformation(info).then(obj => {
    const formatted = [];

    function add(msg) {
      formatted.push(stripIndents(msg));
    }

    la(is.unemptyString(obj.description), 'expected error description to be text', obj.description); // assuming that if there the solution is a function it will handle
    // error message and (optional previous error message)

    if (is.fn(obj.solution)) {
      const text = obj.solution(msg, prevMessage);
      la(is.unemptyString(text), 'expected solution to be text', text);
      add(`
        ${obj.description}

        ${text}

      `);
    } else {
      la(is.unemptyString(obj.solution), 'expected error solution to be text', obj.solution);
      add(`
        ${obj.description}

        ${obj.solution}

      `);

      if (msg) {
        add(`
          ${hr}

          ${msg}

        `);
      }
    }

    add(`
      ${hr}

      ${obj.platform}
    `);

    if (obj.footer) {
      add(`

        ${hr}

        ${obj.footer}
      `);
    }

    return formatted.join('\n\n');
  });
}

const raise = info => {
  return text => {
    const err = new Error(text);

    if (info.code) {
      err.code = info.code;
    }

    err.known = true;
    throw err;
  };
};

const throwFormErrorText = info => {
  return (msg, prevMessage) => {
    return formErrorText(info, msg, prevMessage).then(raise(info));
  };
};
/**
 * Forms full error message with error and OS details, prints to the error output
 * and then exits the process.
 * @param {ErrorInformation} info Error information {description, solution}
 * @example return exitWithError(errors.invalidCypressEnv)('foo')
 */


const exitWithError = info => {
  return msg => {
    return formErrorText(info, msg).then(text => {
      // eslint-disable-next-line no-console
      console.error(text);
      process.exit(info.exitCode || 1);
    });
  };
};

module.exports = {
  raise,
  exitWithError,
  // formError,
  formErrorText,
  throwFormErrorText,
  getError,
  hr,
  errors: {
    unknownError,
    nonZeroExitCodeXvfb,
    missingXvfb,
    missingApp,
    notInstalledCI,
    missingDependency,
    invalidSmokeTestDisplayError,
    versionMismatch,
    binaryNotExecutable,
    unexpected,
    failedDownload,
    failedUnzip,
    invalidCypressEnv,
    invalidCacheDirectory,
    CYPRESS_RUN_BINARY,
    smokeTestFailure,
    childProcessKilled,
    incompatibleHeadlessFlags,
    invalidRunProjectPath,
    invalidTestingType
  }
};