"use strict";

// This is very hacky, but this should be temporary hack
// until we make "sharp" a peerDependency and can be removed afterwards.
// It's not done yet because it would cause too much friction.
// Image processing is important part of Gatsby ecosystem
// and there's lot of guides and tutorials that we don't control
// that would be outdated. Moving "sharp" to be peerDependency
// is scheduled for gatsby@3.
// This file is duplicated in multiple location in this repository,
// So make sure to apply same changes every "safe-sharp" file.
var childProcess = require("child_process");

var path = require("path");

var fs = require("fs");

var semver = require("semver");

var originalConsoleError = console.error;

var restoreConsoleError = function restoreConsoleError() {
  console.error = originalConsoleError;
};

var getDetailedMessage = function getDetailedMessage() {
  try {
    // `npm list` seems to work in yarn installed projects as long
    // as there is no package-lock.json, so let's bail out
    // if both lock files exist
    if (fs.existsSync(path.join(process.cwd(), "package-lock.json")) && fs.existsSync(path.join(process.cwd(), "yarn.lock"))) {
      return null;
    }

    var msg = [];

    var _JSON$parse = JSON.parse(childProcess.execSync("npm list sharp --json", {
      encoding: "utf-8"
    })),
        dependencies = _JSON$parse.dependencies;

    var findSharpVersion = function findSharpVersion(dependency) {
      if (dependency.dependencies.sharp) {
        return dependency.dependencies.sharp.version;
      }

      var _arr = Object.keys(dependency.dependencies);

      for (var _i = 0; _i < _arr.length; _i++) {
        var depName = _arr[_i];
        var v = findSharpVersion(dependency.dependencies[depName]);

        if (v) {
          return v;
        }
      }

      return null;
    };

    var _Object$keys$reduce = Object.keys(dependencies).reduce(function (acc, depName) {
      var sharpVersion = findSharpVersion(dependencies[depName]);

      if (sharpVersion) {
        acc.topLevelPackages[depName] = sharpVersion;

        if (!acc.latestVersion || semver.gt(sharpVersion, acc.latestVersion)) {
          acc.latestVersion = sharpVersion;
        }
      }

      return acc;
    }, {
      latestVersion: undefined,
      topLevelPackages: {}
    }),
        latestVersion = _Object$keys$reduce.latestVersion,
        topLevelPackages = _Object$keys$reduce.topLevelPackages;

    var packagesToUpdate = []; // list top level dependencies

    msg = msg.concat(["List of installed packages that depend on sharp:"].concat(Object.keys(topLevelPackages).map(function (depName) {
      var sharpVersion = topLevelPackages[depName];

      if (sharpVersion !== latestVersion) {
        packagesToUpdate.push(depName);
      }

      return " - " + depName + (sharpVersion ? " (" + sharpVersion + ")" + (sharpVersion !== latestVersion ? " - needs update" : "") : "");
    })));

    if (packagesToUpdate.length > 0) {
      msg = msg.concat(["", "If you are using npm, run:", "", "npm install " + packagesToUpdate.join(" "), "", "If you are using yarn, run:", "", "yarn add " + packagesToUpdate.join(" ")]);
    }

    return msg; // eslint-disable-next-line no-empty
  } catch (_unused) {
    return null;
  }
};

var handleMessage = function handleMessage(msg) {
  if (msg.includes("Incompatible library version: sharp.node requires")) {
    restoreConsoleError();
    var _msg = ["It looks like there are multiple versions of \"sharp\" module installed.", "Please update any packages that depend on \"sharp\".", ""];
    var detailedMessage = getDetailedMessage();

    if (!detailedMessage) {
      _msg = _msg.concat(["To get a list of installed packages that depend on \"sharp\" try running:", " - npm list sharp (if you use npm)", " - yarn why sharp (if you use yarn)", " and update packages that depend on version older than latest listed in output of above command."]);
    } else {
      _msg = _msg.concat(detailedMessage);
    }

    _msg = _msg.concat(["", "If an older version of \"sharp\" still persists and this error is displayed after updating your packages, open an issue in the package's repository and request them to update the \"sharp\" dependency."]);
    console.error(_msg.join("\n"));
  }
};

var sharp;

try {
  // sharp@0.22.1 uses console.error and then process.exit and doesn't throw
  // so to capture error and provide meaningful troubleshooting guide
  // we intercept console.error calls and add special handling.
  console.error = function (msg) {
    for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
      args[_key - 1] = arguments[_key];
    }

    originalConsoleError.apply(void 0, [msg].concat(args));
    handleMessage(msg);
  };

  sharp = require("sharp");
} catch (e) {
  handleMessage(e.toString());
  throw e;
} finally {
  restoreConsoleError();
}

module.exports = sharp;