package space.anyi.amountVerification;

import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.read.listener.PageReadListener;
import javafx.application.Application;
import javafx.application.Platform;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.control.Button;
import javafx.scene.control.ButtonType;
import javafx.scene.control.Label;
import javafx.scene.control.Menu;
import javafx.scene.control.MenuBar;
import javafx.scene.control.MenuItem;
import javafx.scene.control.ProgressBar;
import javafx.scene.control.TextField;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.VBox;
import javafx.stage.DirectoryChooser;
import javafx.stage.FileChooser;
import javafx.stage.Stage;
import org.apache.pdfbox.Loader;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.text.PDFTextStripper;
import space.anyi.amountVerification.model.InputModel;
import space.anyi.amountVerification.model.OutputModel;

import java.io.File;
import java.io.IOException;
import java.math.BigDecimal;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * @ProjectName: amount-verification
 * @FileName: Application
 * @Author: 杨逸
 * @Data:2025/11/27 18:33
 * @Description:
 */
public class App extends Application {
    private Stage primaryStage;
    /**
     * 文件
     * @see TextField
     */
    private TextField fileField;
    /**文件夹
     * @see TextField
     */
    private TextField folderField;
    /**
     * excel输入数据
     * @see List<InputModel>
     */
    private List<InputModel> inputModelList;
    /**
     * excel输出数据
     * @see List<OutputModel>
     */
    private List<OutputModel> outputModelList;
    /**
     * IMEI码与PDF文件映射
     * @see Map<String, File>
     */
    private Map<String,File> pdfFileMap;
    /**
     * 进度条控件
     * @see ProgressBar
     */
    private ProgressBar progressBar;
    /**
     * 进度标签
     * @see Label
     */
    private Label progressLabel;
    /**
     * 匹配金额使用的正则表达式对象
     * @see Pattern
     */
    private Pattern pattern;
    {
        /**
         * 代码快初始化匹配金额的正则表达式对象
         */
        String regex = "理赔金额合计:¥(?<money>\\d+\\.\\d{2})";
        this.pattern = Pattern.compile(regex);
    }

    public static void main(String[] args) {
        Application.launch(App.class, args);
    }

    @Override
    public void start(Stage primaryStage) throws Exception {
        this.primaryStage = primaryStage;
        primaryStage.setTitle("金额验证工具");
        primaryStage.setResizable(false);
        // 设置窗口关闭事件处理
        primaryStage.setOnCloseRequest(event -> {
            event.consume(); // 阻止默认关闭行为
            showCloseConfirmation(primaryStage);
        });

        // 创建主布局
        BorderPane mainLayout = new BorderPane();

        // 创建菜单栏
        MenuBar menuBar = createMenuBar();
        mainLayout.setTop(menuBar);

        // 创建内容区域
        VBox contentLayout = new VBox(20);
        contentLayout.setPadding(new Insets(20));
        contentLayout.setAlignment(Pos.CENTER);

        // 创建网格布局用于表单
        GridPane gridPane = new GridPane();
        gridPane.setHgap(10);
        gridPane.setVgap(10);
        gridPane.setAlignment(Pos.CENTER);

        // 文件选择组件
        Label fileLabel = new Label("选择文件:");
        fileField = new TextField();
        fileField.setPromptText("请选择文件...");
        fileField.setPrefWidth(300);
        Button fileButton = new Button("浏览");

        // 文件夹选择组件
        Label folderLabel = new Label("选择文件夹:");
        folderField = new TextField();
        folderField.setPromptText("请选择文件夹...");
        folderField.setPrefWidth(300);
        Button folderButton = new Button("浏览");

        // 进度条组件
        progressBar = new ProgressBar(0);
        progressBar.setPrefWidth(300);
        progressBar.setVisible(false);

        // 进度标签
        progressLabel = new Label("准备开始...");
        progressLabel.setVisible(false);

        // 开始按钮
        Button startButton = new Button("开始验证");
        startButton.setPrefWidth(150);
        startButton.setPrefHeight(40);

        // 设置按钮事件
        fileButton.setOnAction(e -> chooseFile());
        folderButton.setOnAction(e -> chooseFolder());
        startButton.setOnAction(e -> startVerification());

        // 添加到网格布局
        gridPane.add(fileLabel, 0, 0);
        gridPane.add(fileField, 1, 0);
        gridPane.add(fileButton, 2, 0);

        gridPane.add(folderLabel, 0, 1);
        gridPane.add(folderField, 1, 1);
        gridPane.add(folderButton, 2, 1);

        // 添加到内容布局
        contentLayout.getChildren().addAll(gridPane, progressLabel, progressBar, startButton);
        mainLayout.setCenter(contentLayout);

        // 创建场景并显示
        Scene scene = new Scene(mainLayout, 500, 400);
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    private MenuBar createMenuBar() {
        MenuBar menuBar = new MenuBar();

        // 创建帮助菜单
        Menu helpMenu = new Menu("帮助");

        // 创建关于菜单项
        MenuItem aboutMenuItem = new MenuItem("关于");
        aboutMenuItem.setOnAction(e -> showAboutDialog());

        helpMenu.getItems().add(aboutMenuItem);
        menuBar.getMenus().add(helpMenu);

        return menuBar;
    }

    private void showAboutDialog() {
        Alert alert = new Alert(Alert.AlertType.INFORMATION);
        alert.setTitle("关于");
        alert.setHeaderText("金额验证工具");
        alert.setContentText("作者: 杨逸\n" +
                           "联系方式: huanglve2004@163.com\n\n" +
                           "版本: 1.0.0\n" +
                           "描述: 用于金额验证的桌面应用程序");

        alert.showAndWait();
    }

    private void showCloseConfirmation(Stage stage) {
        Alert alert = new Alert(Alert.AlertType.CONFIRMATION);
        alert.setTitle("确认关闭");
        alert.setHeaderText("您确定要关闭应用程序吗？");
        alert.setContentText("如果正在执行验证操作，关闭将中断该过程。");

        Optional<ButtonType> result = alert.showAndWait();
        if (result.isPresent() && result.get() == ButtonType.OK) {
            stage.close();
        }
    }

    private void chooseFile() {
        FileChooser fileChooser = new FileChooser();
        fileChooser.setTitle("选择文件");

        // 添加文件过滤器，只允许选择xlsx文件
        FileChooser.ExtensionFilter extFilter = new FileChooser.ExtensionFilter(
            "Excel文件 (*.xlsx)", "*.xlsx");
        fileChooser.getExtensionFilters().add(extFilter);

        File selectedFile = fileChooser.showOpenDialog(null);
        if (selectedFile != null) {
            fileField.setText(selectedFile.getAbsolutePath());
        }
    }

    private void chooseFolder() {
        DirectoryChooser directoryChooser = new DirectoryChooser();
        directoryChooser.setTitle("选择文件夹");
        File selectedFolder = directoryChooser.showDialog(null);
        if (selectedFolder != null) {
            folderField.setText(selectedFolder.getAbsolutePath());
        }
    }

    /**
     * 更新进度条和进度标签
     * @param message 进度消息
     * @param progress 进度值 (0.0 - 1.0)
     */
    private void updateProgress(String message, double progress) {
        javafx.application.Platform.runLater(() -> {
            progressLabel.setText(message);
            progressBar.setProgress(progress);
        });
    }

    private void startVerification() {
        String filePath = fileField.getText();
        String folderPath = folderField.getText();
        System.out.println("filePath = " + filePath);
        System.out.println(folderPath);

        if (filePath.isEmpty() || folderPath.isEmpty()) {
            Alert alert = new Alert(Alert.AlertType.ERROR);
            alert.setHeaderText("请选择文件和文件夹");
            alert.showAndWait();
            return;
        }

        // 初始化进度条
        progressBar.setProgress(0);
        progressBar.setVisible(true);
        progressLabel.setVisible(true);
        updateProgress("准备开始验证...", 0);

        inputModelList = new ArrayList<>();
        outputModelList = new ArrayList<>();
        pdfFileMap = new HashMap<>();
        List<String> errorImeiList = new ArrayList<>();

        // 读取excel
        updateProgress("正在读取Excel文件...", 0.1);
        EasyExcel.read(filePath, InputModel.class, new PageReadListener<InputModel>(dataList -> {
            for (InputModel inputModel : dataList) {
                inputModelList.add(inputModel);
            }
        })).sheet().doRead();
        updateProgress("Excel文件读取完成，正在扫描文件夹...", 0.25);
        //读取文件夹
        File folder = new File(folderPath);
        File[] files = folder.listFiles();

        // 扫描文件夹并建立IMEI-PDF映射
        int totalFolders = files.length;
        int processedFolders = 0;

        for (File file : files) {
            if (file.isFile()) {
                continue;
            }
            File[] listFiles = file.listFiles();
            String imei = file.getName().split("-")[2];
            //拿到文件夹里的pdf
            for (File pdfFile : listFiles) {
                if (pdfFile.getName().endsWith(".pdf")) {
                    if (pdfFileMap.containsKey(imei)) {
                        //出现重复的imei
                        Alert alert = new Alert(Alert.AlertType.ERROR);
                        alert.setHeaderText("出现重复的imei");
                        alert.setContentText("请检查文件夹中是否出现重复的imei:" + imei);
                        alert.showAndWait();
                        return;
                    }
                    pdfFileMap.put(imei, pdfFile);
                    break;
                }
            }

            processedFolders++;
            double progress = 0.25 + (0.25 * processedFolders / totalFolders);
            updateProgress("正在扫描文件夹: " + processedFolders + "/" + totalFolders, progress);
        }
        updateProgress("文件夹扫描完成，开始解析PDF文件...", 0.5);

        // 解析PDF文件
        int totalPDFs = inputModelList.size();
        int processedPDFs = 0;

        for (InputModel inputModel : inputModelList) {
            OutputModel outputModel = new OutputModel(inputModel);
            String imei = inputModel.getImei();
            //找到对应pdf的文件路径
            File pdfFile = pdfFileMap.getOrDefault(imei, null);
            if (Objects.isNull(pdfFile)) {
                errorImeiList.add(imei);
                processedPDFs++;
                double progress = 0.5 + (0.4 * processedPDFs / totalPDFs);
                updateProgress("解析PDF文件: " + processedPDFs + "/" + totalPDFs + " (IMEI未找到: " + imei + ")", progress);
                continue;
            }
            //解析pdf
            String text = "";
            try (PDDocument pdDocument = Loader.loadPDF(pdfFile)) {
                PDFTextStripper textStripper = new PDFTextStripper();
                //提取文本
                text = textStripper.getText(pdDocument);
                //解析金额
                Matcher matcher = pattern.matcher(text);
                if (matcher.find()) {
                    String money = matcher.group("money"); // 获取命名分组 "money"
                    //System.out.println("金额: " + money);  // 输出: 金额
                    BigDecimal amount1 = new BigDecimal(inputModel.getAmount());
                    BigDecimal amount2 = new BigDecimal(money);
                    outputModel.setPdfAmount(amount2.doubleValue());
                    outputModel.setMargin(amount1.subtract(amount2).doubleValue());
                } else {
                    System.out.println("未匹配到金额");
                    errorImeiList.add(imei);
                }
            } catch (IOException | NumberFormatException e) {
                e.printStackTrace();
                errorImeiList.add(imei);
            }
            outputModelList.add(outputModel);

            processedPDFs++;
            double progress = 0.5 + (0.4 * processedPDFs / totalPDFs);
            updateProgress("解析PDF文件: " + processedPDFs + "/" + totalPDFs, progress);
        }
        updateProgress("PDF文件解析完成，正在生成输出文件...", 0.9);
        //输出最终文件
        String outputFileName = filePath.substring(0, filePath.lastIndexOf(".")) + "_" + System.currentTimeMillis() + "_output.xlsx";
        EasyExcel.write(outputFileName, OutputModel.class).sheet("模板").doWrite(outputModelList);
        updateProgress("验证完成！输出文件: " + outputFileName, 1.0);

        // 显示完成信息
        javafx.application.Platform.runLater(() -> {
            Alert alert = new Alert(Alert.AlertType.INFORMATION);
            alert.setTitle("验证完成");
            alert.setHeaderText("金额验证已完成");
            alert.setContentText("输出文件已生成: " + outputFileName +
                               (errorImeiList.isEmpty() ? "" : "\n\n以下IMEI处理失败: " + String.join(", ", errorImeiList)));
            alert.showAndWait();

            // 隐藏进度条
            progressBar.setVisible(false);
            progressLabel.setVisible(false);
        });

        inputModelList = null;
        outputModelList = null;
        pdfFileMap = null;
    }
}