/*\
title: $:/core/modules/commands/init.js
type: application/javascript
module-type: command

Command to initialise an empty wiki folder

\*/
(function(){

/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";

exports.info = {
	name: "init",
	synchronous: true
};

var Command = function(params,commander) {
	this.params = params;
	this.commander = commander;
};

Command.prototype.execute = function() {
	var fs = require("fs"),
		path = require("path"),
		editionName = this.params[0] || "empty";
	// Check that we don't already have a valid wiki folder
	if($tw.boot.wikiTiddlersPath) {
		return "Wiki folder is not empty";
	}
	// Check the edition exists
	var editionPath = path.resolve($tw.boot.corePath,$tw.config.editionsPath) + "/" + editionName;
	if(!$tw.utils.isDirectory(editionPath)) {
		return "Edition '" + editionName + "' not found";
	}
	// Copy the edition content
	var err = $tw.utils.copyDirectory(editionPath,$tw.boot.wikiPath);
	if(!err) {
		this.commander.streams.output.write("Copied edition '" + editionName + "' to " + $tw.boot.wikiPath + "\n");
	}
	// Tweak the tiddlywiki.info to remove any included wikis
	var packagePath = $tw.boot.wikiPath + "/tiddlywiki.info",
		packageJson = JSON.parse(fs.readFileSync(packagePath));
	delete packageJson.includeWikis;
	fs.writeFileSync(packagePath,JSON.stringify(packageJson,null,$tw.config.preferences.jsonSpaces));
	return err;
};

exports.Command = Command;

})();