"use strict";

const Cesium = require("cesium");
const Promise = require("bluebird");
const child_process = require("child_process");
const fsExtra = require("fs-extra");
const gulp = require("gulp");
const Jasmine = require("jasmine");
const JasmineSpecReporter = require("jasmine-spec-reporter").SpecReporter;
const open = require("open");
const path = require("path");
const yargs = require("yargs");

const defaultValue = Cesium.defaultValue;
const defined = Cesium.defined;
const argv = yargs.argv;

// Add third-party node module binaries to the system path
// since some tasks need to call them directly.
const environmentSeparator = process.platform === "win32" ? ";" : ":";
const nodeBinaries = path.join(__dirname, "node_modules", ".bin");
process.env.PATH += environmentSeparator + nodeBinaries;

const specFiles = [
  "**/*.js",
  "!node_modules/**",
  "!coverage/**",
  "!doc/**",
  "!bin/**",
];

module.exports = {
  test: test,
  "test-watch": testWatch,
  coverage: coverage,
  cloc: cloc,
  "generate-third-party": generateThirdParty,
};

function test(done) {
  const jasmine = new Jasmine();
  jasmine.loadConfigFile("specs/jasmine.json");
  jasmine.addReporter(
    new JasmineSpecReporter({
      displaySuccessfulSpec:
        !defined(argv.suppressPassed) || !argv.suppressPassed,
    })
  );
  jasmine.execute();
  jasmine.onComplete(function (passed) {
    done(argv.failTaskOnError && !passed ? 1 : 0);
  });
}

function testWatch() {
  return gulp.watch(specFiles).on("change", function () {
    // We can't simply depend on the test task because Jasmine
    // does not like being run multiple times in the same process.
    try {
      child_process.execSync("jasmine JASMINE_CONFIG_PATH=specs/jasmine.json", {
        stdio: [process.stdin, process.stdout, process.stderr],
      });
    } catch (exception) {
      console.log("Tests failed to execute.");
    }
  });
}

async function coverage() {
  fsExtra.removeSync("coverage/server");
  child_process.execSync(
    "nyc" +
      " --all" +
      " --reporter=lcov" +
      " --dir coverage" +
      ' -x "specs/**" -x "coverage/**" -x "doc/**" -x "bin/**" -x "index.js" -x "gulpfile.js"' +
      " node_modules/jasmine/bin/jasmine.js" +
      " JASMINE_CONFIG_PATH=specs/jasmine.json",
    {
      stdio: [process.stdin, process.stdout, process.stderr],
    }
  );
  open("coverage/lcov-report/index.html");
}

function cloc() {
  let cmdLine;
  const clocPath = path.join("node_modules", "cloc", "lib", "cloc");

  //Run cloc on primary Source files only
  const source = new Promise(function (resolve, reject) {
    cmdLine = `perl ${clocPath} --quiet --progress-rate=0` + ` lib/ bin/`;

    child_process.exec(cmdLine, function (error, stdout, stderr) {
      if (error) {
        console.log(stderr);
        return reject(error);
      }
      console.log("Source:");
      console.log(stdout);
      resolve();
    });
  });

  //If running cloc on source succeeded, also run it on the tests.
  return source.then(function () {
    return new Promise(function (resolve, reject) {
      cmdLine = `perl ${clocPath} --quiet --progress-rate=0` + ` specs/lib/`;
      child_process.exec(cmdLine, function (error, stdout, stderr) {
        if (error) {
          console.log(stderr);
          return reject(error);
        }
        console.log("Specs:");
        console.log(stdout);
        resolve();
      });
    });
  });
}

function getLicenseDataFromPackage(packageName, override) {
  override = defaultValue(override, defaultValue.EMPTY_OBJECT);
  const packagePath = path.join("node_modules", packageName, "package.json");

  if (!fsExtra.existsSync(packagePath)) {
    throw new Error(`Unable to find ${packageName} license information`);
  }

  const contents = fsExtra.readFileSync(packagePath);
  const packageJson = JSON.parse(contents);

  let licenseField = override.license;

  if (!licenseField) {
    licenseField = [packageJson.license];
  }

  if (!licenseField && packageJson.licenses) {
    licenseField = packageJson.licenses;
  }

  if (!licenseField) {
    console.log(`No license found for ${packageName}`);
    licenseField = ["NONE"];
  }

  let version = packageJson.version;
  if (!packageJson.version) {
    console.log(`No version information found for ${packageName}`);
    version = "NONE";
  }

  return {
    name: packageName,
    license: licenseField,
    version: version,
    url: `https://www.npmjs.com/package/${packageName}`,
    notes: override.notes,
  };
}

function readThirdPartyExtraJson() {
  const path = "ThirdParty.extra.json";
  if (fsExtra.existsSync(path)) {
    const contents = fsExtra.readFileSync(path);
    return JSON.parse(contents);
  }
  return [];
}

async function generateThirdParty() {
  const packageJson = JSON.parse(fsExtra.readFileSync("package.json"));
  const thirdPartyExtraJson = readThirdPartyExtraJson();

  const thirdPartyJson = [];

  const dependencies = packageJson.dependencies;
  for (const packageName in dependencies) {
    if (dependencies.hasOwnProperty(packageName)) {
      const override = thirdPartyExtraJson.find(
        (entry) => entry.name === packageName
      );
      thirdPartyJson.push(getLicenseDataFromPackage(packageName, override));
    }
  }

  thirdPartyJson.sort(function (a, b) {
    const nameA = a.name.toLowerCase();
    const nameB = b.name.toLowerCase();
    if (nameA < nameB) {
      return -1;
    }
    if (nameA > nameB) {
      return 1;
    }
    return 0;
  });

  fsExtra.writeFileSync(
    "ThirdParty.json",
    JSON.stringify(thirdPartyJson, null, 2)
  );
}