package cn.minoa.view.mine;

import java.io.File;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import cn.minoa.MainApp;
import cn.minoa.dataRequestInterface.OrderInfo;
import cn.minoa.dataRequestInterface.ResponseData;
import cn.minoa.model.Person;
import javafx.collections.ObservableList;
import javafx.fxml.FXML;
import javafx.scene.control.Alert;
import javafx.scene.control.ListView;
import javafx.scene.control.TextArea;
import javafx.scene.control.TextField;
import javafx.scene.layout.Pane;
import javafx.stage.FileChooser;
import javafx.stage.Stage;
import javafx.scene.control.Alert.AlertType;

public class WrittenEmailController {

	private MainApp mainApp;
	private Stage dialogStage;
	
	@FXML
	private TextField receiverField;
	@FXML
	private TextField emailTitleField;
	@FXML
	private TextArea emailContentTextArea;
	
	@FXML
	private ListView<Pane> emailFiles;
	//与之对应的数据结构
	private List<String> emailFilesList;
	
	public WrittenEmailController() {
		// TODO Auto-generated constructor stub
		emailFilesList=new LinkedList<String>();
	}
	
	@FXML
	private void initialize() {
		// 在fxml被载入时候被自动调用
		receiverField.setPromptText("请输入邮件地址（格式：昵称@pkusz.edu.cn）");
		emailTitleField.setPromptText("请输入邮件主题...");
		emailContentTextArea.setPromptText("请输入邮件内容...");
	}
	
	/*
	 * @param mainApp
	 */
	public void setMainApp(MainApp mainApp) {
		this.mainApp = mainApp;
	}
	
	public void setStage(Stage stage) {
		this.dialogStage = stage;
	}
	
	/*
	 *  从弹窗获取要添加的附件文件路径，将其加入到附件列表中，并显示到前端
	 */
	@FXML
	private void addFilesToEmail() {
		FileChooser fileChooser = new FileChooser();
        fileChooser.setTitle("选择上传文件");
        Stage selectFileStage = new Stage();
        File file = fileChooser.showOpenDialog(selectFileStage);
        if (file != null) {
        	//文件不为空，且不是文件夹
        	if(file.isFile()) {
        		if(!isSelected(file.getAbsolutePath())) {
        			emailFilesList.add(file.getAbsolutePath());
        			emailFiles.getItems().add(new emailFileListItem(file.getAbsolutePath()).getPaneItem());
        		}else {
//        			弹窗参考：https://code.makery.ch/blog/javafx-dialogs-official/
        			Alert alert = new Alert(AlertType.WARNING);
        			alert.setTitle("附件添加重复");
        			alert.setHeaderText("你选择的该文件已加入附件列表");
        			alert.setContentText("请确保你选中的文件是未加入附件列表的文件。");
        			alert.showAndWait();
        		}
        	}else {
//    			弹窗参考：https://code.makery.ch/blog/javafx-dialogs-official/
    			Alert alert = new Alert(AlertType.WARNING);
    			alert.setTitle("附件类型错误");
    			alert.setHeaderText("你的文件类型错误");
    			alert.setContentText("请确保你选中的是一个文件而非文件夹。");
    			alert.showAndWait();
        	}
        }
	}

	//判断邮件地址是否符合要求
	private boolean isRightEmailPath(String emailPath){
		//取尾部字段：@pkusz.edu.cn [length=13]
		if(emailPath.length()<=13){
			return false;
		}
		String tailPath=emailPath.substring(emailPath.length()-13);
		System.out.println("tailPath: "+tailPath);
		if(tailPath.equals("@pkusz.edu.cn")){
			return true;
		}else{
			return false;
		}
	}

	//取邮件地址中的昵称字段
	private String getUserInEmailPath(String emailPath){
		return emailPath.substring(0,emailPath.length()-13);
	}
	
	//根据文件路径判断该选中文件是否已经加入到列表中
	private boolean isSelected(String absolutePath) {
		boolean flag=false;
		//...
		return flag;
	}
	
	//发送邮件
	@FXML
	private void handleSendEmail() {
		if(isRightContent()) {
			// 请求数据
			OrderInfo orderInfo = new OrderInfo();
			ResponseData responseData = new ResponseData();
			Long seqLong = mainApp.getNewDataReqId();
			orderInfo.setSeq(seqLong);
			orderInfo.setJsonString(getSendApproval());
			System.out.println("getSendApproval: " + orderInfo.getJsonString());
			mainApp.minoaDataAPI.executeOrder("/sendApproval", orderInfo);
			responseData = mainApp.minoaDataAPI.dataCacheQueue.getResponseDataBySeq(seqLong);
			JSONObject jsonObject = responseData.praseRequestData();
			responseData.printSelf();
			// 解析数据
			Integer codeInteger = null;
			try {
				codeInteger = jsonObject.getInt("code");
			} catch (JSONException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			if (codeInteger == 200) {
//				弹窗参考：https://code.makery.ch/blog/javafx-dialogs-official/
				Alert alert = new Alert(AlertType.INFORMATION);
				alert.setTitle("发送成功");
				alert.setHeaderText("邮件发送成功");
				alert.setContentText("你的邮件已经发送到对方的邮件箱中。");
				alert.showAndWait();
				exit();
			}else {
//				弹窗参考：https://code.makery.ch/blog/javafx-dialogs-official/
				Alert alert = new Alert(AlertType.WARNING);
				alert.setTitle("发送失败");
				alert.setHeaderText("邮件发送失败");
				alert.setContentText("登录信息过期，邮件发送失败，请尝试重新登录。");
				alert.showAndWait();
			}
		}
	}
	
	@FXML
	private void exit() {
		this.dialogStage.close();
	}
	
	//验证邮件格式
	private boolean isRightContent() {
		//验证接收人是否是联系人列表中的一个
		String receiverRawName=receiverField.getText().trim();
		if(!isRightEmailPath(receiverRawName)){
			//弹窗提示
//			弹窗参考：https://code.makery.ch/blog/javafx-dialogs-official/
			Alert alert = new Alert(AlertType.WARNING);
			alert.setTitle("地址后缀错误");
			alert.setHeaderText("你的地址后缀错误");
			alert.setContentText("请确保你输入的地址后缀是@pkusz.edu.cn，并保证前面有用户名。");
			alert.showAndWait();
			return false;
		}
		String receiverName=getUserInEmailPath(receiverRawName);
		Integer flag=0;
		ObservableList<Person> persons=mainApp.contactListData;
		for (Iterator<Person> iterator = persons.iterator(); iterator.hasNext();) {
			Person person = (Person) iterator.next();
			if(person.getUserName().equals(receiverName)) {
				flag++;
			}
		}
		if(flag==0) {
			//弹窗提示
//			弹窗参考：https://code.makery.ch/blog/javafx-dialogs-official/
			Alert alert = new Alert(AlertType.WARNING);
			alert.setTitle("收件人错误");
			alert.setHeaderText("你的收件人错误");
			alert.setContentText("请确保你输入的收件人姓名是系统的实际用户。");
			alert.showAndWait();
			return false;
		}
		//验证标题是否为空
		if(emailTitleField.getText().trim().equals("")) {
//			弹窗参考：https://code.makery.ch/blog/javafx-dialogs-official/
			Alert alert = new Alert(AlertType.WARNING);
			alert.setTitle("邮件标题错误");
			alert.setHeaderText("你的邮件标题错误");
			alert.setContentText("邮件标题不能为空。");
			alert.showAndWait();
			return false;
		}
		//验证内容是否为空
		if(emailContentTextArea.getText().trim().equals("")) {
//			弹窗参考：https://code.makery.ch/blog/javafx-dialogs-official/
			Alert alert = new Alert(AlertType.WARNING);
			alert.setTitle("邮件内容错误");
			alert.setHeaderText("你的邮件内容错误");
			alert.setContentText("邮件内容不能为空。");
			alert.showAndWait();
			return false;
		}
		return true;
	}
	
	//发送邮件命令
	private String getSendApproval() {
		JSONObject detailJsonObject = new JSONObject();
		String titleString=emailTitleField.getText().trim();
		String contentString=emailContentTextArea.getText().trim();
		//根据已经添加的文件附件列表制作一个arraylist
		JSONArray filesArray=new JSONArray();
		for(int i=0;i<emailFilesList.size();i++) {
			String pathfilename=emailFilesList.get(i);
			//上传该文件到服务器共享文件夹目录下
			File file=new File(pathfilename);
			mainApp.uploadFileToServerSharedFolder(file);
			//将该文件信息[服务器文件路径地址]写入邮件信息中
			JSONObject oneFile=new JSONObject();
			try {
				oneFile.put("filename", mainApp.sharedFileServerPath+getPureFileNameFromWindows(pathfilename));
			} catch (JSONException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			filesArray.put(oneFile);
		}
		try {
			detailJsonObject.put("title", titleString);
			detailJsonObject.put("content", contentString);
			detailJsonObject.put("files", filesArray);
		} catch (JSONException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		}
		
		JSONObject jsonObject = new JSONObject();
		String commandString = "/sendApproval";
		String usernameString = mainApp.loginer.getUserName();
//		String usernameString = mainApp.loginer.getUserName()+"@oa.edu.cn";
		String uuidString = mainApp.loginer.getUuid();
		String approverString=receiverField.getText().trim();
		Integer typeCodeInteger=3;
		try {
			jsonObject.put("command", commandString);
			jsonObject.put("username", usernameString);
			jsonObject.put("uuid", uuidString);
			jsonObject.put("approver", approverString);
			jsonObject.put("typeCode", typeCodeInteger);
			jsonObject.put("detail", detailJsonObject);
		} catch (Exception e) {
			// TODO: handle exception
			System.out.println("exception: " + e.getMessage());
		}
		return jsonObject.toString();
	}
	
	// 根据包含路径的文件名获取纯文件名[windows本地]
	private String getPureFileNameFromWindows(String pathfilename) {
		// 标记最后一个/的下标
		int indexLeft = -1;
		for (int i = 0; i < pathfilename.length(); i++) {
			if (pathfilename.charAt(i) == '\\') {
				indexLeft = i;
			}
		}
		if (indexLeft == -1) {
			System.out.println("pure name[windows]: " + pathfilename);
			return pathfilename;
		} else {
			System.out.println("pure name[windows]: " + pathfilename.substring(indexLeft + 1, pathfilename.length()));
			return pathfilename.substring(indexLeft + 1, pathfilename.length());
		}
	}
}