// com/ui/InfGenPage.java
package com.pair.ui;

import com.pair.model.Grade;
import javafx.geometry.Pos;
import javafx.scene.control.*;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.scene.text.Font;
import javafx.scene.text.FontWeight;
import javafx.scene.text.TextAlignment;

public class InfGenPage extends NavigablePanel {

    private final TextField usernameField = new TextField();
    private final TextField emailField = new TextField();
    private final Label passwordLabel = new Label("******");
    private final ChoiceBox<String> gradeChoice = new ChoiceBox<>();
    private final Spinner<Integer> questionCountSpinner = new Spinner<>(10, 30, 10);
    private final Button passwordModifyButton = new Button("修改密码");
    private final Button generateButton = new Button("生成题目");
    private final Button modifyUsernameButton = new Button("修改用户名"); // 新增
    private final Button modifyEmailButton = new Button("修改邮箱");     // 新增

    public InfGenPage(Runnable onBack, String currentUsername, String currentEmail, Grade currentGrade) {
        super(onBack);
        initializeContent();
        usernameField.setText(currentUsername);
        emailField.setText(currentEmail);
        gradeChoice.getSelectionModel().select(currentGrade.ordinal());
    }

    @Override
    protected void buildContent() {
        // 外层容器：VBox 居中，带内边距和圆角阴影
        VBox form = new VBox(UIConstants.DEFAULT_SPACING * 1.5);
        form.setAlignment(Pos.CENTER);
        form.setPadding(UIConstants.DEFAULT_PADDING);
        form.setStyle(UIConstants.FORM_STYLE);
        form.setMaxWidth(500);

        // 标题居中
        Label titleLabel = new Label("中小学数学答题系统");
        titleLabel.setFont(Font.font(UIConstants.FONT_FAMILY, FontWeight.BOLD, UIConstants.TITLE_FONT_SIZE));
        titleLabel.setTextAlignment(TextAlignment.CENTER);
        titleLabel.setMaxWidth(Double.MAX_VALUE);

        // ========== 创建表单项行（关键：标签左对齐 + 固定宽度）==========
        HBox usernameRow = createFormRow("用户名：", usernameField, modifyUsernameButton);
        HBox emailRow = createFormRow("邮箱：", emailField, modifyEmailButton);
        HBox passwordRow = createFormRow("密码：", passwordLabel, passwordModifyButton);
        HBox gradeRow = createFormRow("学段选择：", gradeChoice, null);
        HBox countRow = createFormRow("题目数量：", questionCountSpinner, generateButton);

        // ========== 配置控件样式 ==========
        // 用户名输入框
        usernameField.setStyle(UIConstants.INPUT_STYLE);
        usernameField.setPrefWidth(200);
        usernameField.setFont(Font.font(UIConstants.FONT_FAMILY, UIConstants.INPUT_FONT_SIZE));

        // 密码标签
        passwordLabel.setStyle("-fx-font-size: " + UIConstants.INPUT_FONT_SIZE + "px;");

        // 邮箱输入框
        emailField.setStyle(UIConstants.INPUT_STYLE);
        emailField.setPrefWidth(200);
        emailField.setFont(Font.font(UIConstants.FONT_FAMILY, UIConstants.INPUT_FONT_SIZE));

        // 学段选择框
        gradeChoice.getItems().addAll("小学", "初中", "高中");
        gradeChoice.setValue("小学");
        gradeChoice.setStyle(UIConstants.INPUT_STYLE);
        gradeChoice.setPrefWidth(200);

        // 题目数量Spinner
        questionCountSpinner.setEditable(true);
        questionCountSpinner.setPrefWidth(200);
        questionCountSpinner.getEditor().setStyle(UIConstants.INPUT_STYLE);
        questionCountSpinner.getEditor().setFont(Font.font(UIConstants.FONT_FAMILY, UIConstants.INPUT_FONT_SIZE));

        // 按钮样式统一
        passwordModifyButton.setStyle(UIConstants.BUTTON_STYLE);
        generateButton.setPrefSize(UIConstants.BUTTON_WIDTH, UIConstants.BUTTON_HEIGHT);
        generateButton.setFont(Font.font(UIConstants.FONT_FAMILY, UIConstants.BUTTON_FONT_SIZE));
        generateButton.setStyle(UIConstants.BUTTON_STYLE);

        // 新增按钮样式
        modifyUsernameButton.setStyle(UIConstants.BUTTON_STYLE);
        modifyUsernameButton.setPrefSize(UIConstants.BUTTON_WIDTH, UIConstants.BUTTON_HEIGHT);
        modifyUsernameButton.setFont(Font.font(UIConstants.FONT_FAMILY, UIConstants.BUTTON_FONT_SIZE));

        modifyEmailButton.setStyle(UIConstants.BUTTON_STYLE);
        modifyEmailButton.setPrefSize(UIConstants.BUTTON_WIDTH, UIConstants.BUTTON_HEIGHT);
        modifyEmailButton.setFont(Font.font(UIConstants.FONT_FAMILY, UIConstants.BUTTON_FONT_SIZE));

        // ========== 添加到表单 ==========
        form.getChildren().addAll(
                titleLabel,
                usernameRow,
                emailRow,
                passwordRow,
                gradeRow,
                countRow
        );

        this.setCenter(form);
    }

    /**
     * 创建表单项行（标签左对齐，固定宽度，避免偏移）
     */
    private HBox createFormRow(String labelText, Control content, Button rightButton) {
        HBox row = new HBox(15); // 间距15
        row.setAlignment(Pos.CENTER_LEFT); // ← 关键：让整行左对齐
        row.setMaxWidth(Double.MAX_VALUE);

        // 标签：左对齐，固定宽度，字体统一
        Label label = new Label(labelText);
        label.setFont(Font.font(UIConstants.FONT_FAMILY, FontWeight.NORMAL, UIConstants.LABEL_ITEM_TITLE_SIZE));
        label.setTextAlignment(TextAlignment.LEFT); // ← 关键：标签文字左对齐
        label.setPrefWidth(120); // 固定宽度，确保所有标签对齐

        row.getChildren().addAll(label, content);
        if (rightButton != null) {
            row.getChildren().add(rightButton);
        }

        return row;
    }

    // Getters...
    public TextField getUsernameField() { return usernameField; }
    public TextField getEmailField() { return emailField; }
    public ChoiceBox<String> getGradeChoice() { return gradeChoice; }
    public Spinner<Integer> getQuestionCountSpinner() { return questionCountSpinner; }
    public Button getGenerateButton() { return generateButton; }
    public Button getPasswordModifyButton() { return passwordModifyButton; }
    public Button getModifyUsernameButton() { return modifyUsernameButton; } // 新增
    public Button getModifyEmailButton() { return modifyEmailButton; }       // 新增
}