var readline = require('readline');
var log = require('hlogger').createLogger("shell");
var path = require('path');



var shellActivator = {

	start(context) {
		this.context = context;
		this.manager = context.manager;

		this.stdout = process.stdout;
		this.registerCommands(context);	
		this.cli = readline.createInterface(process.stdin,this.stdout,(str) => this.completer(str));
		this.cli.setPrompt("HCI> ");
	
		this.cli.on('line',(cmd) => {
			if(cmd.length == "") {this.cli.prompt(); return;}
			var [cmd,...args] = cmd.split(/\s/);
			var req = { cmd:cmd, args:args }
			var res = this.stdout;
			context
				.emit("cmd:" + cmd,req,res)
				.done((evt)=> {
					if(evt.count == 0) {
						context.emit("cmd",req,res).done(() => { this.cli.prompt() });
					}
					this.cli.prompt();	
				});
		});

		this.cli.prompt();
	},
	stop(context) {
		log.info("Closing cli");
		this.cli.close();
	},
	completer(str) {
		var hits = this.manager.listeners
			.filter((v)=> {
				var re = new RegExp("^"+ this.context.name + ":cmd:" +str + ".*");
				if(re.test(v.name)) {
					return v;
				}
			}).map((v) => v.name.split(":")[2] + " ");

		return [hits,str];
	},
	output(str) {
		this.stdout.write(str + "\n");
	},
	registerCommands(context) {
	}
	
}









module.exports.bundleActivator = shellActivator;