#!/usr/bin/env node

function usage() {
	console.log("Usage:");
	console.log("  tibia file1.json,file2.json,...filen.json template outDirectory");
	console.log("  tibia --common template outDirectory");
	console.log("  tibia --data file1.json,file2.json,...filen.json template outDirectory");
	process.exit(1);
}

var jsonFiles, template, outputDir, outputCommon, outputData;
if (process.argv[2] == "--common") {
	if (process.argv.length != 5)
		usage();
	jsonFiles = [];
	template = process.argv[3];
	outputDir = process.argv[4];
	outputCommon = true;
	outputData = false;
} else if (process.argv[2] == "--data") {
	if (process.argv.length != 6)
		usage();
	jsonFiles = process.argv[3].split(",");
	template = process.argv[4];
	outputDir = process.argv[5];
	outputCommon = false;
	outputData = true;
} else {
	if (process.argv.length != 5)
		usage();
	jsonFiles = process.argv[2].split(",");
	template = process.argv[3];
	outputDir = process.argv[4];
	outputCommon = true;
	outputData = true;
}

var fs = require("fs");
var path = require("path");

/*
var ajvValidate;
if (outputData) {
	var schema = JSON.parse(fs.readFileSync(__dirname + path.sep + "schema.json", { encoding: "utf-8" }));
	var Ajv = require("ajv");
	var ajv = new Ajv();
	ajvValidate = ajv.compile(schema);
}
*/

var data = {};
for (var i = 0; i < jsonFiles.length; i++) {
	var d = JSON.parse(fs.readFileSync(jsonFiles[i], { encoding: "utf-8" }));
	for (var k in d)
		data[k] = d[k];
}

/*
if (outputData) {
	var ajvValid = ajvValidate(data);
	if (!ajvValid) {
		console.log(ajvValidate.errors);
		process.exit(1);
	}
}
*/

var doT = require("dot");
doT.templateSettings.strip = false;

var api = {
	// https://coderrocketfuel.com/article/recursively-list-all-the-files-in-a-directory-using-node-js
	getAllFiles: function (dirPath, arrayOfFiles, relDir) {
		var files = fs.readdirSync(dirPath);

		var arrayOfFiles = arrayOfFiles || [];
		var relDir = relDir || "";

		files.forEach(function(file) {
			if (fs.statSync(dirPath + path.sep + file).isDirectory())
				arrayOfFiles = api.getAllFiles(dirPath + path.sep + file, arrayOfFiles, relDir + file + path.sep);
			else
				arrayOfFiles.push(relDir + file);
		});

		return arrayOfFiles
	},

	generateFileFromTemplateFile: function (templateFile, outFile, data) {
		if (!outputData)
			return;
		var dir = outputDir + path.sep + path.dirname(outFile);
		fs.mkdirSync(dir, { recursive: true });
		var t = doT.template(fs.readFileSync(template + path.sep + templateFile, { encoding: "utf-8" }));
		fs.writeFileSync(outputDir + path.sep + outFile, t(data), { encoding: "utf-8" });
	},

	copyFile: function (inFile, outFile) {
		if (!outputCommon)
			return;
		var dir = outputDir + path.sep + path.dirname(outFile);
		fs.mkdirSync(dir, { recursive: true });
		fs.copyFileSync(template + path.sep + inFile, outputDir + path.sep + outFile);
	}
};

data.tibia = {
	CGetUTF8StringLiteral: function (string, maxLength) {
		if (!maxLength)
			maxLength = Infinity;
		var v = (new TextEncoder()).encode(string);
		var s = "";
		for (var i = 0; i < maxLength && i < v.length; ) {
			if (!(v[i] & 0x80)) {
				if (v[i] < 0x20 || v[i] == 0x7f) {
					s += "\\" + v[i].toString(8).padStart(3, "0");
				} else if (v[i] == 0x22)
					s += "\\\"";
				else if (v[i] == 0x5c)
					s += "\\\\";
				else
					s += String.fromCharCode(v[i]);
				i++;
			} else if ((v[i] & 0xe0) == 0xc0) {
				if (maxLength - i < 2)
					break;
				for (var j = 0; j < 2; j++) {
					s += "\\" + v[i].toString(8).padStart(3, "0");
					i++;
				}
			} else if ((v[i] & 0xf0) == 0xe0) {
				if (maxLength - i < 3)
					break;
				for (var j = 0; j < 3; j++) {
					s += "\\" + v[i].toString(8).padStart(3, "0");
					i++;
				}
			} else if ((v[i] & 0xf8) == 0xf0) {
				if (maxLength - i < 4)
					break;
				for (var j = 0; j < 4; j++) {
					s += "\\" + v[i].toString(8).padStart(3, "0");
					i++;
				}
			}
		}
		return s;
	}
};

require(path.resolve(template + path.sep + "tibia-index.js"))(data, api, outputCommon, outputData);