131 lines
3.3 KiB
JavaScript
131 lines
3.3 KiB
JavaScript
let chokidar = require('chokidar');
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let path = require('path');
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let fs = require('../core/fs.js');
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// TODO: this should be receiving the config object not re-reading the
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// embark.json file
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class Watch {
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constructor(options) {
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this.logger = options.logger;
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this.events = options.events;
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this.fileWatchers = [];
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}
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start() {
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let self = this;
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// TODO: should come from the config object instead of reading the file
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// directly
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let embarkConfig = fs.readJSONSync("embark.json");
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this.watchAssets(embarkConfig, function () {
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self.logger.trace('ready to watch asset changes');
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});
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this.watchContracts(embarkConfig, function () {
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self.logger.trace('ready to watch contract changes');
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});
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this.watchConfigs(function () {
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self.logger.trace('ready to watch config changes');
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});
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this.logger.info("ready to watch file changes");
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}
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restart() {
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this.stop();
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this.start();
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}
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stop() {
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this.fileWatchers.forEach(fileWatcher => {
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fileWatcher.close();
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fileWatcher = null;
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});
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this.fileWatchers = [];
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}
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watchAssets(embarkConfig, callback) {
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let self = this;
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let appConfig = embarkConfig.app;
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let filesToWatch = [];
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for (let targetFile in appConfig) {
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let files = appConfig[targetFile];
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let fileGlob = files;
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// workaround for imports issue
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// so embark reacts to changes made in imported js files
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if (!Array.isArray(files)) {
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fileGlob = path.join(path.dirname(files), '**', '*.*');
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} else if (files.length === 1) {
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fileGlob = path.join(path.dirname(files[0]), '**', '*.*');
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}
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filesToWatch.push(fileGlob);
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}
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this.watchFiles(
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filesToWatch,
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function (eventName, path) {
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self.logger.info(`${eventName}: ${path}`);
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self.events.emit('file-' + eventName, 'asset', path);
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self.events.emit('file-event', 'asset', path);
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},
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function () {
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callback();
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}
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);
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}
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watchContracts(embarkConfig, callback) {
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let self = this;
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this.watchFiles(
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[embarkConfig.contracts],
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function (eventName, path) {
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self.logger.info(`${eventName}: ${path}`);
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self.events.emit('file-' + eventName, 'contract', path);
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self.events.emit('file-event', 'contract', path);
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},
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function () {
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callback();
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}
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);
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}
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watchConfigs(callback) {
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let self = this;
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this.watchFiles(
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"config/**/contracts.json",
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function (eventName, path) {
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self.logger.info(`${eventName}: ${path}`);
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self.events.emit('file-' + eventName, 'config', path);
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self.events.emit('file-event', 'config', path);
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},
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function () {
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callback();
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}
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);
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}
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watchFiles(files, changeCallback, doneCallback) {
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this.logger.trace('watchFiles');
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this.logger.trace(files);
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let configWatcher = chokidar.watch(files, {
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ignored: /[\/\\]\./, persistent: true, ignoreInitial: true, followSymlinks: true
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});
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this.fileWatchers.push(configWatcher);
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configWatcher
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.on('add', path => changeCallback('add', path))
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.on('change', path => changeCallback('change', path))
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.on('unlink', path => changeCallback('remove', path))
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.on('ready', doneCallback);
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}
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}
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module.exports = Watch;
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