genitems

#!/usr/bin/js
/* genitems
 * Generate the items.js include from unite-db.com file (held_items.json)
 * and the preprocessor code accessory (preprocitems.ini)
 * Copyright (C) 2023 Jaret Jay Cantu
 * Licensed under the AGPL
 *
 */

// file utility functions
function readAndHashJson(f) {
	// read file
	var content = read(f);
	if (content == '')
		throw("Could not read file: " + f);
	var parsed = JSON.parse(content);
	if (!parsed || parsed.length == 0)
		throw("Could not parse file: " + f);
	// convert sequential array into a hash organized by name element
	var rehashed = {};
	for (var p=0; p<parsed.length; p++) {
		var e = parsed[p];
		var name = e.name.replaceAll(/\W/g, '');
		rehashed[name] = e;
	}

	return rehashed;
}

function readAndHashIni(f) {
	// read file
	var content = read(f);
	if (content == '')
		throw("Could not read file: " + f);
	var lines = content.split("\n");
	var rehashed = {};
	var item = '';
	for (var i=0; i<lines.length; i++) {
		var l = lines[i];
		l = l.replace(/#.*$/, '');
		if (l == '') continue;
		if (l.match(/^\[.*\]\s*$/)) {
			item = l.substring(1, l.length-1);
			rehashed[item] = {};
		} else if (item == '') {
			throw("No Item declared for code: " + l);
		} else if (l.match(/^\s*\w+\s*=/)) {
			var p = l.match(/^\s*(\w+)\s*=\s*(\S.*)\s*$/);
			// name/value pair lines
			rehashed[item][p[1]] = p[2];
		}
	}
	return rehashed;
}

// constants
var STAT_MAP = {
	"Attack Speed": "aps",
	"Attack": "attack",
	"CD Reduction": "cdr",
	"Critical-Hit Damage": "critdamage",
	"Critical-Hit Rate": "critrate",
	"Defense": "defense",
	"Energy Rate": "charge",
	"HP": "health",
	"HP/5s": "recovery",
	"Sp. Attack": "spattack",
	"Sp. Defense": "spdefense",
	"Speed": "movement",
};

var PERCENT_STATS = [
	'cdr', 'critdamage', 'critrate', 'charge'
];

// parsing functions

function parseUnlock(json, code, lvl) {
	var val = json["level"+lvl];
	if (typeof(val) === 'undefined') {
		val = 0;
	} else {
		var percAt = val.indexOf('%');
		if (percAt != -1)
			val = val.substring(0,percAt)/100.0;
	}
	if (typeof(code.unlock) !== 'undefined')
		return code.unlock.replaceAll(/%/g, val);
	return val;
}

// main function
function run(args) {
	// check args
	while (args.length && args[0].charAt(0) == '-') {
		var arg = args.shift();
		switch (arg) {
		case '-h': case '--help':
			print("./genitems [args?] [held_items.json " +
				"[preprocitems.ini]]");
			print(" -h/--help: Print this message");
			quit(0);
		default:
			throw("Unknown argument: " + arg);
		}
	}

	// get info
	var items = readAndHashJson(scriptArgs && scriptArgs.length > 0
				    ? scriptArgs[0] : "held_items.json");
	var code = readAndHashIni(scriptArgs && scriptArgs.length > 1
				    ? scriptArgs[1] : "preprocitems.ini");

	// Define dummy item that prevents the need to check for a null item
	items[''] = {};

	// print header
	print("// nessashot held item listing -- Generated file");
	print("// https://github.com/jaretcantu/nessashot");
	print("// " + (new Date()));
	print("Item.LIST = {");

	for (var k in items) {
		var itm = items[k];
		var c = code[k] || {};
		print("\t" + (k==''?'""':k) + ": new Item(\"" + k + "\", [");
		for (var l=0; l<30; l++) {
			if (typeof(itm.stats) === 'undefined') {
				print("\t\tnew Stats(),");
				continue;
			}
			var statstr = '';
			for (var s=0; s<itm.stats.length; s++) {
				var stat = itm.stats[s];
				if (statstr != '') statstr+= ', ';
				var val;
				if (l == 0) {
					val = stat.initial;
				} else {
					if (typeof(stat.initial_diff)
								!== 'undefined')
						val = stat.initial_diff;
					else
						val = 0;
					var mod = Math.ceil((1+l-stat.start)
							/ (1+stat.skip));
					val+= stat.increment * mod;
				}
				var statkey = STAT_MAP[stat.label];
				if (PERCENT_STATS.indexOf(statkey) != -1)
					val = (val/100.0).toFixed(3);
				else if (stat.float)
					val = val.toFixed(1);
				else
					val = Math.round(val);
					
				statstr+= statkey + ': ' + val;
			}
			print("\t\tnew Stats({" + statstr + "}),");
		}
		var l1 = parseUnlock(itm, c, 1);
		var l10 = parseUnlock(itm, c, 10);
		var l20 = parseUnlock(itm, c, 20);
		print("\t], [" + l1 + ", " + l10 + ", " + l20 + "], " + 
		      (typeof(c.passive) !== 'undefined'
		       ? c.passive : "Passive.DUMMY") +
		      "),");
	}

	// print footer
	print("};");
};

run(scriptArgs);