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const path = require( 'path' );
const { watch } = require( 'gulp' );
const buildConfig = require( '../build-config.json' );
const { buildJs, buildJsLibs } = require( './buildScripts' );

function watchJs () {
	buildConfig.uglifyList.forEach( ( entry ) => {
		entry.src.forEach( ( path ) => {
			const jsFile = buildConfig.globalOptions.js.srcPath + path;
			watch( jsFile, buildJs );
		});
	});
}

function watchJsLibs ( done ) {
	const srcPath = buildConfig.globalOptions.jsLibs.srcPath;
	return watch( path.join( srcPath, '**/*.js' ), { ignoreInitial: false })
		.on( 'change', ( filePath ) => {
			// Only trigger buildJsLibs if the file wasn't a minified file
			if ( !filePath.endsWith( '.min.js' ) ) {
				buildJsLibs( done );
			}
		});
}

function watchModuleJsFiles ( done ) {
	const srcPath = buildConfig.modules.srcPath;
	return watch( path.join( srcPath, '**/*.js' ), { ignoreInitial: false })
		.on( 'change', ( filePath ) => {
			if ( !filePath.endsWith( '.min.js' ) ) {
				buildJs( done,
					buildConfig.modules.moduleUglifyList,
					buildConfig.modules.srcPath,
					buildConfig.modules.srcPath
				);
			}
		});
}

function watchModuleJsMainFile ( done ) {
	const srcPath = buildConfig.modulesMainFile.srcPath;
	return watch( path.join( srcPath, '**/*.js' ), { ignoreInitial: false })
		.on( 'change', ( filePath ) => {
			if ( !filePath.endsWith( '.min.js' ) ) {
				buildJs(
					done,
					buildConfig.modulesMainFile.modulesMainFileUglifyList,
					buildConfig.modulesMainFile.srcPath,
					buildConfig.modulesMainFile.destPath
				);
			}
		});
}

module.exports = {
	watchJs,
	watchJsLibs,
	watchModuleJsFiles,
	watchModuleJsMainFile
};