xianyan/lib/features/study_plan/study_plan_models.dart

/// ============================================================
/// 闲言APP — 学习计划数据模型
/// 创建时间: 2026-05-02
/// 更新时间: 2026-06-17
/// 作用: 学习计划 + 记录 + 模板 — 支持进度追踪
/// 上次更新: emoji替换为CupertinoIcons，label改为多语言键
/// ============================================================

import 'package:flutter/cupertino.dart';

enum PlanCategory {
  poetry('catPoetry', 0xFF4A90D9),
  chengyu('catChengyu', 0xFFEF5350),
  classic('catClassic', 0xFF5C6BC0),
  wisdom('catWisdom', 0xFFD4A843),
  custom('catCustom', 0xFF26A69A);

  const PlanCategory(this.labelKey, this.colorValue);

  /// 多语言翻译键，如 'catPoetry' → t.studyPlan.catPoetry
  final String labelKey;

  /// 分类颜色值
  final int colorValue;

  /// 分类图标（非常量，通过 getter 返回）
  IconData get iconData => switch (this) {
    poetry => CupertinoIcons.doc_text,
    chengyu => CupertinoIcons.textformat_abc,
    classic => CupertinoIcons.book,
    wisdom => CupertinoIcons.lightbulb,
    custom => CupertinoIcons.star,
  };
}

class PlanTemplate {
  const PlanTemplate({
    required this.id,
    required this.titleKey,
    required this.descriptionKey,
    required this.category,
    required this.dailyGoal,
    required this.iconDataKey,
  });

  final String id;

  /// 多语言翻译键，如 'dailyPoetry5Title' → t.studyPlan.dailyPoetry5Title
  final String titleKey;

  /// 多语言翻译键，如 'dailyPoetry5Desc' → t.studyPlan.dailyPoetry5Desc
  final String descriptionKey;

  final PlanCategory category;
  final int dailyGoal;

  /// 图标键名，用于获取对应的CupertinoIcons
  final String iconDataKey;

  /// 获取模板图标
  IconData get iconData => switch (iconDataKey) {
    'doc_text' => CupertinoIcons.doc_text,
    'flower' => CupertinoIcons.leaf_arrow_circlepath,
    'textformat_abc' => CupertinoIcons.textformat_abc,
    'lightbulb' => CupertinoIcons.lightbulb,
    'book' => CupertinoIcons.book,
    'star' => CupertinoIcons.star,
    _ => CupertinoIcons.doc_text,
  };
}

class PlanTemplates {
  PlanTemplates._();

  static const List<PlanTemplate> all = [
    PlanTemplate(
      id: 'daily_poetry_5',
      titleKey: 'dailyPoetry5Title',
      descriptionKey: 'dailyPoetry5Desc',
      category: PlanCategory.poetry,
      dailyGoal: 5,
      iconDataKey: 'doc_text',
    ),
    PlanTemplate(
      id: 'daily_poetry_3',
      titleKey: 'dailyPoetry3Title',
      descriptionKey: 'dailyPoetry3Desc',
      category: PlanCategory.poetry,
      dailyGoal: 3,
      iconDataKey: 'flower',
    ),
    PlanTemplate(
      id: 'daily_chengyu_5',
      titleKey: 'dailyChengyu5Title',
      descriptionKey: 'dailyChengyu5Desc',
      category: PlanCategory.chengyu,
      dailyGoal: 5,
      iconDataKey: 'textformat_abc',
    ),
    PlanTemplate(
      id: 'daily_wisdom_3',
      titleKey: 'dailyWisdom3Title',
      descriptionKey: 'dailyWisdom3Desc',
      category: PlanCategory.wisdom,
      dailyGoal: 3,
      iconDataKey: 'lightbulb',
    ),
    PlanTemplate(
      id: 'weekly_classic',
      titleKey: 'weeklyClassicTitle',
      descriptionKey: 'weeklyClassicDesc',
      category: PlanCategory.classic,
      dailyGoal: 1,
      iconDataKey: 'book',
    ),
    PlanTemplate(
      id: 'daily_mix_5',
      titleKey: 'dailyMix5Title',
      descriptionKey: 'dailyMix5Desc',
      category: PlanCategory.custom,
      dailyGoal: 5,
      iconDataKey: 'star',
    ),
  ];
}

class StudyPlanState {
  const StudyPlanState({
    this.plans = const [],
    this.todayRecords = const [],
    this.selectedPlanId,
    this.isLoading = false,
    this.showCreateSheet = false,
  });

  final List<dynamic> plans;
  final List<dynamic> todayRecords;
  final int? selectedPlanId;
  final bool isLoading;
  final bool showCreateSheet;

  StudyPlanState copyWith({
    List<dynamic>? plans,
    List<dynamic>? todayRecords,
    int? selectedPlanId,
    bool? isLoading,
    bool? showCreateSheet,
    bool clearSelectedPlanId = false,
  }) {
    return StudyPlanState(
      plans: plans ?? this.plans,
      todayRecords: todayRecords ?? this.todayRecords,
      selectedPlanId: clearSelectedPlanId ? null : (selectedPlanId ?? this.selectedPlanId),
      isLoading: isLoading ?? this.isLoading,
      showCreateSheet: showCreateSheet ?? this.showCreateSheet,
    );
  }
}