'use strict';

const chalk = require('chalk');
const {exec} = require('child-process-promise');
const {existsSync, mkdirSync} = require('fs');
const {readJsonSync, writeJsonSync} = require('fs-extra');
const inquirer = require('inquirer');
const {join} = require('path');
const createLogger = require('progress-estimator');
const {
 BUILD_METADATA_TEMP_DIRECTORY,
 NPM_PACKAGES,
} = require('./configuration');

const logger = createLogger({
 storagePath: join(__dirname, '.progress-estimator'),
});

async function checkNPMPermissions() {
 const currentUser = await execRead('npm whoami');
 const failedProjects = [];

 const checkProject = async project => {
 const owners = (await execRead(`npm owner ls ${project}`))
 .split('\n')
 .filter(owner => owner)
 .map(owner => owner.split('')[0]);

 if (!owners.includes(currentUser)) {
 failedProjects.push(project);
 }
 };

 await logger(
 Promise.all(NPM_PACKAGES.map(checkProject)),
 `Checking NPM permissions for ${chalk.bold(currentUser)}.`,
 {estimate: 2500}
 );

 console.log('');

 if (failedProjects.length) {
 console.error(chalk.red.bold('Insufficient NPM permissions'));
 console.error('');
 console.error(
 chalk.red(
 `NPM user {underline ${currentUser}} is not an owner for: ${chalk.bold(
 failedProjects.join(', ')
 )}`
 )
 );
 console.error(
 chalk.red(
 'Please contact a React team member to be added to the above project(s).'
 )
 );
 process.exit(1);
 }
}

function clear() {
 console.clear();
}

async function confirm(message, exitFunction) {
 console.log('');

 const {confirmation} = await inquirer.prompt({
 name: 'confirmation',
 type: 'confirm',
 message,
 });

 console.log('');

 if (!confirmation) {
 if (typeof exitFunction === 'function') {
 exitFunction();
 }

 process.exit(0);
 }
}

async function confirmContinue(exitFunction) {
 await confirm('Continue the release?', exitFunction);
}

async function execRead(command, options) {
 const {stdout} = await exec(command, options);

 return stdout.trim();
}

function readSavedBuildMetadata() {
 const path = join(BUILD_METADATA_TEMP_DIRECTORY, 'metadata');

 if (!existsSync(path)) {
 console.error(chalk.red('Expected to find build metadata at:'));
 console.error(chalk.dim(` ${path}`));
 process.exit(1);
 }

 const {archivePath, buildID} = readJsonSync(path);

 return {archivePath, buildID};
}

function saveBuildMetadata({archivePath, buildID}) {
 const path = join(BUILD_METADATA_TEMP_DIRECTORY, 'metadata');

 if (!existsSync(BUILD_METADATA_TEMP_DIRECTORY)) {
 mkdirSync(BUILD_METADATA_TEMP_DIRECTORY);
 }

 writeJsonSync(path, {archivePath, buildID}, {spaces: 2});
}

module.exports = {
 checkNPMPermissions,
 clear,
 confirm,
 confirmContinue,
 execRead,
 logger,
 readSavedBuildMetadata,
 saveBuildMetadata,
};