package lib.exporter;

import lua.TableTools;
import lua.NativeStringTools;

class Request {
	public final id:String;
	public final field:String;
	public final index:Null<Int>;
	public final operation:Operation;

	public function new(id:String, field:String, index:Null<Int>, operation:Operation) {
		this.id = id;
		this.field = field;
		this.index = index;
		this.operation = operation;
	}

	/**
		Example: 
			"myfield[2]@myid"
			"myfield@myid"
	**/
	public static function fromString(locator:String):Request {
		if (StringTools.contains(locator, "[")) {
			var f = TableTools.pack(NativeStringTools.gmatch(locator, "(%a+)%[([%d]+)%]@(%a+)")());

			var field = f[1];
			var index = Std.parseInt(f[2]);
			var id = f[3];

			return new Request(id, field, index, Get);
		} else {
			var f = TableTools.pack(NativeStringTools.gmatch(locator, "(%a+)@(%a+)")());

			var field = f[1];
			var id = f[2];

			return new Request(id, field, null, Get);
		}
	}

	public function toString() {
		if (index == null) {
			return field + "@" + id;
		} else {
			return field + "[" + index + "]@" + id;
		}
	}
}