class MaestroListManager {

	constructor(docList, docNav) {
		let self = this;
		this.docList = docList;
		this.docNav = docNav;

		this.list = new MaestroList(this.docList, this);
		this.listNavigator = new MaestroListNavigator(this.docNav);

		this.maestroCount = 0;
		this.activePageNo = 1;
		this.lastPageNo = 0;

	}


	setupRegisteredMaestroList() {
		let self = this;

		let xhr = new XMLHttpRequest(); //new로 생성.
		xhr.open('POST', './../server/maestro/registered_maestro_count.php', true);
		xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		xhr.send("maestro_id=" + maestroID);
		xhr.onload = function() {
			if(xhr.readyState === 4 && xhr.status === 200) {
				// console.log(xhr.responseText);
				// console.log(xhr.responseText.length);
				if(xhr.responseText.length === 0 || xhr.responseText === null) {
					console.log("no data from server");
					return;
				}

				let replyJSON = JSON.parse(xhr.responseText);
				// console.log(replyJSON);

				if(replyJSON === null) {
					console.log("no data from server");
					return;
				}

				if(replyJSON["ERROR"] !== undefined || replyJSON["RESULT"] === undefined) {
					console.log(replyJSON["ERROR"]);
					return;
				}

				if(replyJSON["RESULT"] === "fail") {
					console.log(replyJSON["RESULT"]);
					return;
				}

				self.maestroCount = replyJSON["Count"];
				self.lastPageNo = Math.ceil( (self.maestroCount + 1) / 10 );
				self.activePageNo = 1;

				self.loadRegisteredMaestroListPage(self.activePageNo);
				self.listNavigator.updateNavigator(self.activePageNo, self.lastPageNo);
			}
		}
	}

	loadRegisteredMaestroListPage(pageNo) {
		self = this;
		this.activePageNo = pageNo;

		let pageIndex = pageNo - 1;
		let startNo = pageIndex * 10;
		let endNo = pageIndex * 10 + 9;

		let xhr = new XMLHttpRequest(); //new로 생성.
		xhr.open('POST', './../server/maestro/registered_maestro_list.php', true);
		xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		xhr.send("maestro_id=" + maestroID + "&start_no=" + startNo + "&end_no=" + endNo);
		xhr.onload = function() {
			if(xhr.readyState === 4 && xhr.status === 200) {
				// console.log(xhr.responseText);
				// console.log(xhr.responseText.length);
				if(xhr.responseText.length === 0 || xhr.responseText === null) {
					console.log("no data from server");
					return;
				}

				let replyJSON = JSON.parse(xhr.responseText);
				// console.log(replyJSON);

				if(replyJSON === null) {
					console.log("no data from server");
					return;
				}

				if(replyJSON["ERROR"] !== undefined || replyJSON["RESULT"] === undefined) {
					console.log(replyJSON["ERROR"]);
					return;
				}

				if(replyJSON["RESULT"] === "fail") {
					console.log(replyJSON["RESULT"]);
					return;
				}

				// console.log(replyJSON["MaestroList"]);
				// updateMaestroListPage(replyJSON["MaestroList"]);
				self.list.updateMaestroList(replyJSON["MaestroList"]);

				self.maestroCount = replyJSON["MaestroList"].length;
			}
		}
	}


	updateRegisteredMaestroListPage(pageNo) {
		self = this;
		this.maestroListPage = pageNo;

		let pageIndex = pageNo - 1;
		let startNo = pageIndex * 10;
		let endNo = pageIndex * 10 + 9;

		let xhr = new XMLHttpRequest(); //new로 생성.
		xhr.open('POST', './../server/maestro/registered_maestro_list.php', true);
		xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		xhr.send("maestro_id=" + maestroID + "&start_no=" + startNo + "&end_no=" + endNo);
		xhr.onload = function() {
			if(xhr.readyState === 4 && xhr.status === 200) {
				// console.log(xhr.responseText);
				// console.log(xhr.responseText.length);
				if(xhr.responseText.length === 0 || xhr.responseText === null) {
					console.log("no data from server");
					return;
				}

				let replyJSON = JSON.parse(xhr.responseText);
				// console.log(replyJSON);

				if(replyJSON === null) {
					console.log("no data from server");
					return;
				}

				if(replyJSON["ERROR"] !== undefined || replyJSON["RESULT"] === undefined) {
					console.log(replyJSON["ERROR"]);
					return;
				}

				if(replyJSON["RESULT"] === "fail") {
					console.log(replyJSON["RESULT"]);
					return;
				}

				// console.log(replyJSON["MaestroList"]);
				self.list.updateMaestroList(replyJSON["MaestroList"]);

				self.maestroCount = replyJSON["MaestroList"].length;
				// console.log(self.maestroCount);
				// self.lastPageNo = Math.ceil( (self.maestroCount + 1) / 10 );
				// self.activePageNo = 1;

				self.listNavigator.updateNavigator(self.activePageNo, self.lastPageNo);
			}
		}
	}



	setupUpgradeMaestroList(maestroName) {
		let self = this;

		let xhr = new XMLHttpRequest(); //new로 생성.
		xhr.open('POST', './../server/maestro/search_maestro_count.php', true);
		xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		xhr.send("maestro_id=" + maestroID + "&maestro_name=" + maestroName);
		xhr.onload = function() {
			if(xhr.readyState === 4 && xhr.status === 200) {
				// console.log(xhr.responseText);
				// console.log(xhr.responseText.length);
				if(xhr.responseText.length === 0 || xhr.responseText === null) {
					console.log("no data from server");
					return;
				}

				let replyJSON = JSON.parse(xhr.responseText);
				// console.log(replyJSON);

				if(replyJSON === null) {
					console.log("no data from server");
					return;
				}

				if(replyJSON["ERROR"] !== undefined || replyJSON["RESULT"] === undefined) {
					console.log(replyJSON["ERROR"]);
					return;
				}

				if(replyJSON["RESULT"] === "fail") {
					console.log(replyJSON["RESULT"]);
					return;
				}

				self.maestroCount = replyJSON["Count"];
				self.lastPageNo = Math.ceil( (self.maestroCount + 1) / 10 );
				self.activePageNo = 1;

				self.updateSearchMaestroListPage(maestroName, 1);
			}
		}
	}

	updateUpgradeMaestroListPage(maestroName, pageNo) {
		let self = this;
		this.maestroListPage = pageNo;

		let pageIndex = pageNo - 1;
		let startNo = pageIndex * 10;
		let endNo = pageIndex * 10 + 9;

		let xhr = new XMLHttpRequest(); //new로 생성.
		xhr.open('POST', './../server/maestro/search_maestro_list.php', true);
		xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		xhr.send("maestro_id=" + maestroID + "&maestro_name=" + maestroName + "&start_no=" + startNo + "&end_no=" + endNo);
		xhr.onload = function() {
			if(xhr.readyState === 4 && xhr.status === 200) {
				// console.log(xhr.responseText);
				// console.log(xhr.responseText.length);
				if(xhr.responseText.length === 0 || xhr.responseText === null) {
					console.log("no data from server");
					return;
				}

				let replyJSON = JSON.parse(xhr.responseText);
				// console.log(replyJSON);

				if(replyJSON === null) {
					console.log("no data from server");
					return;
				}

				if(replyJSON["ERROR"] !== undefined || replyJSON["RESULT"] === undefined) {
					console.log(replyJSON["ERROR"]);
					return;
				}

				if(replyJSON["RESULT"] === "fail") {
					console.log(replyJSON["RESULT"]);
					return;
				}

				// console.log(replyJSON["MaestroList"]);
				self.list.updateMaestroList(replyJSON["MaestroList"]);

				self.maestroCount = replyJSON["MaestroList"].length;
				// self.lastPageNo = Math.ceil( (self.maestroCount + 1) / 10 );
				// self.activePageNo = 1;

				self.listNavigator.updateNavigator(self.activePageNo, self.lastPageNo);
			}
		}
	}


	onClickMaestroListPage(pageNo) {
		switch(pageNo) {
			case "first":
			this.activePageNo = 1;
			self.loadAddMaestroListPage(self.activePageNo);
			return;

			case "prev":
			if(this.activePageNo > 1)
				this.activePageNo -= 1;
			self.loadAddMaestroListPage(self.activePageNo);
			return;

			case "next":
			if(this.activePageNo < this.lastPageNo)
				this.activePageNo += 1;
			self.loadAddMaestroListPage(self.activePageNo);
			return;

			case "last":
			this.loadAddMaestroListPage(this.lastPageNo);
			return;
		}

		this.activePageNo = pageNo;
		self.loadAddMaestroListPage(self.activePageNo);
	}


	registMaestro(inputButton) {
		// console.log(inputButton);
		let clickedObjectID = this.getClickedObjectID(inputButton);


		let id = $(inputButton).siblings(".maestro_id");
		let maestroID = id.text();
		// console.log(maestroID);

		let name = $(inputButton).siblings(".maestro_name");
		let maestroName = name.val();
		// console.log(maestroName);

		let enterCode = $(inputButton).siblings(".maestro_entercode");
		let maestroEnterCode = enterCode.val();
		// console.log(maestroEnterCode);

		let xhr = new XMLHttpRequest(); //new로 생성.
		xhr.open('POST', './../server/maestro/edit_maestro.php', true);
		xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		xhr.send("maestro_id=" + maestroID + "&maestro_id=" + maestroID + "&maestro_name=" + maestroName + "&enter_code=" + maestroEnterCode);
		xhr.onload = function() {
			if(xhr.readyState === 4 && xhr.status === 200) {
				// console.log(xhr.responseText);
				// console.log(xhr.responseText.length);
				if(xhr.responseText.length === 0 || xhr.responseText === null) {
					console.log("no data from server");
					return;
				}

				let replyJSON = JSON.parse(xhr.responseText);
				// console.log(replyJSON);

				if(replyJSON === null) {
					console.log("no data from server");
					return;
				}

				if(replyJSON["ERROR"] !== undefined || replyJSON["RESULT"] === undefined) {
					console.log(replyJSON["ERROR"]);
					return;
				}

				if(replyJSON["RESULT"] === "fail") {
					console.log(replyJSON["RESULT"]);
					return;
				}

				console.log(clickedObjectID);
				if(clickedObjectID === "registered_maestro_list") {
					self.setupRegisteredMaestroList();
				} else if(clickedObjectID === "search_maestro_list") {
					let maestroName = $("#search_name").val();
					self.setupUpdateMaestroList(maestroName);
				}
			}
		}
	}

	deleteMaestro(inputButton) {
		let self = this;

		let id = $(inputButton).siblings(".maestro_id");
		let maestroID = id.text();

		let clickedObjectID = this.getClickedObjectID(inputButton);

		if(maestroID === null || maestroID === "")
			return;

		let xhr = new XMLHttpRequest(); //new로 생성.
		xhr.open('POST', './../server/maestro/delete_maestro.php', true);
		xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		xhr.send("maestro_id=" + maestroID + "&maestro_id=" + maestroID);
		xhr.onload = function() {
			if(xhr.readyState === 4 && xhr.status === 200) {
				// console.log(xhr.responseText);
				// console.log(xhr.responseText.length);
				if(xhr.responseText.length === 0 || xhr.responseText === null) {
					console.log("no data from server");
					return;
				}

				let replyJSON = JSON.parse(xhr.responseText);
				// console.log(replyJSON);

				if(replyJSON === null) {
					console.log("no data from server");
					return;
				}

				if(replyJSON["ERROR"] !== undefined || replyJSON["RESULT"] === undefined) {
					console.log(replyJSON["ERROR"]);
					return;
				}

				if(replyJSON["RESULT"] === "fail") {
					console.log(replyJSON["RESULT"]);
					return;
				}

				console.log(clickedObjectID);
				if(clickedObjectID === "registered_maestro_list") {
					self.setupRegisteredMaestroList();
				} else if(clickedObjectID === "upgrade_maestro_list") {
					let maestroName = $("#search_name").val();
					self.setupUpgradeMaestroList(maestroName);
				}
			}
		}
	}

	getClickedObjectID(clickedObject) {
		let tagDiv = $(clickedObject).closest(".maestro_list");
		let tagDivID = tagDiv.prop("id");
		// console.log(tagDivIDName);

		return tagDivID;
	}



}