class DBConnectManager {

	constructor() {
		this.path = this.getPath();
		this.directoryName = this.getDirectoryName(this.path);
		this.phpPath = this.getPHPPath(this.directoryName);

		this.maestroID = 0;
		this.playerUserID = 0;
		this.appName = "";
		this.dateAndTime = null;
	}

	setMaestroID(maestroID) {
		this.maestroID = maestroID;
	}

	setPlayerID(userID) {
		this.playerUserID = userID;
	}

	setAppName(appName) {
		this.appName = appName;
	}

	setDateTime(date, time) {
		this.dateAndTime = date + time;
	}

	resetDateTime() {
		this.dateAndTime = null;
	}

	getPath() {
		return window.location.pathname;
	}

	getDirectoryName(path) {
		let pathAndFileNames = path.split("/");
		return pathAndFileNames[pathAndFileNames.length - 2];
	}

	getPHPPath(directoryName) {
		if(directoryName === "test")	// mouse_typing/test/
			return "../src/web/";
		else	// mousetyping/src/web/client/
			return "../";
	}

	requestCheckUserLogin(userName, enterCode, onSucceededListener, onFailedListener) {
		let xhr = new XMLHttpRequest();
		xhr.open("POST", this.phpPath + "server/user/login.php", true);
		xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		xhr.onreadystatechange = function() {
			if(xhr.readyState == 4 && xhr.status == 200) {
				let jsonData = JSON.parse(xhr.responseText);

				if(jsonData != null && jsonData["UserID"] != null)
					onSucceededListener(jsonData);
				else
					onFailedListener(jsonData);
			}
		};
		xhr.send("name=" + userName + "&enter_code=" + enterCode);
	}

	requestPlayerHistory(date, listener) {
		let historyRecordManager = new HistoryRecordManager();

		/*
		if(isDebugMode()) {
			this.loadTempPlayerHistory(historyRecordManager);

			if(listener !== null)
				listener(historyRecordManager);

			return;
		}
		*/

		let self = this;

		let xhr = new XMLHttpRequest();
		xhr.open("POST", this.phpPath + "server/record/history_record.php", true);
		xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		xhr.onreadystatechange = function() {
			if(xhr.readyState == 4 && xhr.status == 200) {
				let jsonData = JSON.parse(xhr.responseText);

				if(jsonData != null) {
					listener(self.parseJSONtoHistoryRecord(jsonData));
				}
				else
					onFailedListener(jsonData);
			}
		};
		let params = "UserID=" + sessionStorageManager.playerUserID
			+ "&AppName=" + sessionStorageManager.playingAppName
			+ "&Date=" + date;
		xhr.send(params);
	}

	parseJSONtoHistoryRecord(json) {
		let historyRecordManager = new HistoryRecordManager();

		if(typeof json === "undefined")
			return historyRecordManager;

		if(typeof json.history === "undefined")
			return historyRecordManager;

		let count = json.history.length;
		for(let i = 0; i < count; i++) {
			let record = new HistoryRecord(
				json.history[i]["Date"],
				json.history[i]["AppName"],
				json.history[i]["HighScore"]
			);
			historyRecordManager.push(record);
		}

		return historyRecordManager;

/*
		var startIndex = 0;
		var endIndex = jsonRankingList.length;

		var recordArray = [];
		for(var i = startIndex; i < endIndex; i++) {
			var bestRecordRow = [];
			var strDate = jsonRankingList[i]['Date'];
			var dateArray = strDate.split("-");
			var recordDate = new Date(dateArray[0], dateArray[1], dateArray[2]);
			bestRecordRow[0] = recordDate.getMonth() + "월 " + recordDate.getDate() + "일";
			bestRecordRow[1] = Math.floor(jsonRankingList[i]['BestRecord']);
			bestRecordRow[2] = getStageNameForKorean(jsonRankingList[i]['StageName']);
			// console.log("$BestRecordRow : " + bestRecordRow[0] + ", "  + bestRecordRow[1] + ", "  + bestRecordRow[2]);

			recordArray.push(bestRecordRow);
		}

		return recordArray;
*/
	}

	requestRanking(type, date, time, listener) {
		let rankingRecordManager = new RankingRecordManager();

		/*
		if(isDebugMode()) {
			this.loadTempRanking(rankingRecordManager);

			if(listener !== null)
				listener(rankingRecordManager);

			return;
		}
		*/

		let self = this;

		let xhr = new XMLHttpRequest();
		xhr.open("POST", this.getRankingRecordUrl(type), true);
		xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		xhr.onreadystatechange = function() {
			if(xhr.readyState == 4 && xhr.status == 200) {
				let jsonData = JSON.parse(xhr.responseText);

				if(jsonData != null) {
					listener(type, self.parseJSONtoRankingRecord(type, jsonData));
				}
				else
					onFailedListener(jsonData);
			}
		};
		let params = "UserID=" + sessionStorageManager.playerUserID
			+ "&AppName=" + sessionStorageManager.playingAppName
			+ "&Date=" + date
			+ "&Time=" + time;
		xhr.send(params);
	}

	getRankingRecordUrl(type) {
		let rankingRecordURL = this.phpPath;

		switch(type) {
			case DBConnectManager.TYPE_MY_RANKING_HOUR:
			case DBConnectManager.TYPE_ALL_RANKING_HOUR:
			rankingRecordURL += "server/record/ranking_record_hour.php";
			break;

			case DBConnectManager.TYPE_MY_RANKING_DAY:
			case DBConnectManager.TYPE_ALL_RANKING_DAY:
			rankingRecordURL += "server/record/ranking_record_day.php";
			break;

			case DBConnectManager.TYPE_MY_RANKING_MONTH:
			case DBConnectManager.TYPE_ALL_RANKING_MONTH:
			rankingRecordURL += "server/record/ranking_record_month.php";
			break;
		}

		return rankingRecordURL;
	}

	parseJSONtoRankingRecord(type, json) {
		let rankingRecordManager = new RankingRecordManager();

		if(typeof json === "undefined")
			return rankingRecordManager;

		let jsonData = null;
		switch(type) {
			case DBConnectManager.TYPE_MY_RANKING_HOUR:
			case DBConnectManager.TYPE_ALL_RANKING_HOUR:
			jsonData = json.rankingHour;
			break;

			case DBConnectManager.TYPE_MY_RANKING_DAY:
			case DBConnectManager.TYPE_ALL_RANKING_DAY:
			jsonData = json.rankingDay;
			break;

			case DBConnectManager.TYPE_MY_RANKING_MONTH:
			case DBConnectManager.TYPE_ALL_RANKING_MONTH:
			jsonData = json.rankingMonth;
			break;
		}

		if(jsonData === null)
			return rankingRecordManager;

		let count = jsonData.length;
		for(let i = 0; i < count; i++) {
			let record = new RankingRecord(
				i + 1,
				jsonData[i]["UserID"],
				jsonData[i]["Name"],
				jsonData[i]["HighScore"]
			);
			rankingRecordManager.push(record);
		}

		return rankingRecordManager;
	}


	onFailed(errorMessage) {
		console.log("failed : " + errorMessage);
	}


	makeXHRWithParam(url, param, onSucceededListener, onFailedListener) {
		xhr.onreadystatechange = function() {
			if(xhr.readyState == 4 && xhr.status == 200) {
				let jsonData = JSON.parse(xhr.responseText);

				if(jsonData != null && jsonData["UserID"] != null)
					onSucceededListener(jsonData);
				else
					onFailedListener(jsonData);
			}
		}

		return xhr;
	}



	loadTempPlayerHistory(historyRecordManager) {
		historyRecordManager.push(new HistoryRecord("05/14", "space_invaders", 14460));
		historyRecordManager.push(new HistoryRecord("05/13", "space_invaders", 12860));
		historyRecordManager.push(new HistoryRecord("05/12", "typing_english_basic", 15460));
		historyRecordManager.push(new HistoryRecord("05/11", "typing_korean_basic", 13040));
		historyRecordManager.push(new HistoryRecord("05/10", "space_invaders", 15460));
		historyRecordManager.push(new HistoryRecord("05/09", "typing_english_basic", 14607));
		historyRecordManager.push(new HistoryRecord("05/08", "typing_korean_basic", 13058));
	}

	loadTempRanking(rankingRecordManager) {
		rankingRecordManager.push(new RankingRecord(1, 7, "강경모", 4400));
		rankingRecordManager.push(new RankingRecord(2, 2, "강성태", 3400));
		rankingRecordManager.push(new RankingRecord(3, 3, "김기덕", 2400));
		rankingRecordManager.push(new RankingRecord(4, 4, "김남희", 1400));
		rankingRecordManager.push(new RankingRecord(5, 5, "고봉순", 900));
		rankingRecordManager.push(new RankingRecord(6, 6, "파르마", 800));
		rankingRecordManager.push(new RankingRecord(7, 1, "박지상", 700));
		rankingRecordManager.push(new RankingRecord(8, 8, "신현주", 600));
		rankingRecordManager.push(new RankingRecord(9, 9, "꼬봉이", 500));
		rankingRecordManager.push(new RankingRecord(10, 10, "거북이", 400));
		rankingRecordManager.push(new RankingRecord(11, 11, "다람쥐", 300));
		rankingRecordManager.push(new RankingRecord(12, 12, "사시미", 200));
		rankingRecordManager.push(new RankingRecord(13, 13, "태권도", 100));
		rankingRecordManager.push(new RankingRecord(14, 14, "합기도", 40));
		rankingRecordManager.push(new RankingRecord(15, 15, "우습지", 10));
		rankingRecordManager.push(new RankingRecord(16, 16, "하하하", 4));
	}

}

DBConnectManager.TYPE_MY_RANKING_HOUR		= 0;
DBConnectManager.TYPE_MY_RANKING_DAY		= 1;
DBConnectManager.TYPE_MY_RANKING_MONTH		= 2;

DBConnectManager.TYPE_ALL_RANKING_HOUR		= 3;
DBConnectManager.TYPE_ALL_RANKING_DAY		= 4;
DBConnectManager.TYPE_ALL_RANKING_MONTH		= 5;