var log = require('hlogger').createLogger("installer");
var fs = require('fs');
var path = require('path');
var unzip = require('unzip');
var exec = require('child_process').exec;

var HitCounter = require('./hit-counter');


var installerActivator = {

	start(context) {
		
		// With config
		this.deployPath = context.manager.config.deployPath; 
		this.runPath = context.manager.config.runPath;
		if(this.deployPath == undefined) {
			log.warn("There is no deploy path configured");
			context.channel(context.name).set("installed",true);
			//context.emit('installed');
			return;
		}
		if(this.runPath == undefined) {
			context.channel(context.name).set("installed",true);
			return;
		}

		var self = this;
		log.info("Deploy: " + this.deployPath +", runPath: " + this.runPath);

		var mods = fs.readdirSync(this.deployPath);

		var hitCounter = new HitCounter(mods.length, () => {
			context.channel(context.name).set("installed",true);
		});

		for(var v of mods) {
			if(!v.endsWith(".zip")) {
				log.warn("Ignoring file in deploy: " + v);
				hitCounter.hit();
				continue;
			}
			this.installPlugin(path.resolve( path.join(this.deployPath,v)), hitCounter.hit.bind(hitCounter));
		}
	},
	stop(context) {
		context.channel(context.name).unset('installed');	
	},
	installPlugin(fullPath,cb) {
		log.info("Intalling: " + fullPath);
		var basename = path.basename(fullPath,".zip");
		log.info("Base name: " + basename);
		var sourceZip = fullPath;
		var modTargetPath = path.join(this.runPath,basename);
		if(fs.existsSync(modTargetPath)) {
			log.verb("Already exists ignoring");
			if(!fs.existsSync(modTargetPath + "/node_modules")) {
				installNpm(modTargetPath,cb);
			} else {
				cb();
			}
			return;
		}

		fs.mkdirSync(modTargetPath);

		fs.createReadStream(sourceZip)
			.pipe(unzip.Extract({path: modTargetPath}))
			.on('close',() => {
				this.installNpm(modTargetPath,cb);
			});
	},
	installNpm(modTargetPath,cb) {
		var child = exec("npm install", {cwd: modTargetPath});
	  child.on('close',cb);
		child.stdout.pipe(process.stdout);
		child.stderr.pipe(process.stderr);
	}

}

module.exports.bundleActivator = installerActivator;