xianyan/lib/editor/providers/mini_editor_provider.dart

// ============================================================
// 闲言APP — 迷你编辑器状态管理
// 创建时间: 2026-04-20
// 更新时间: 2026-04-20
// 作用: 迷你版编辑器极简状态 — 仅文字+背景+导出
// 上次更新: 初始创建
// ============================================================

import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

import 'package:xianyan/core/theme/app_colors.dart';
import 'package:xianyan/editor/models/editor_models.dart';

// ============================================================
// 迷你编辑器状态
// ============================================================

/// 迷你编辑器状态 — 极简6项
class MiniEditorState {
  const MiniEditorState({
    required this.text,
    this.fontSize = 28.0,
    this.textColor = Colors.white,
    this.background = const BackgroundLayer(
      type: BackgroundType.gradient,
      gradientColors: [LightColors.primary, LightColors.primaryDark],
      gradientBegin: Alignment.topLeft,
      gradientEnd: Alignment.bottomRight,
    ),
    this.isExporting = false,
  });

  final String text;
  final double fontSize;
  final Color textColor;
  final BackgroundLayer background;
  final bool isExporting;

  /// 生成标准画布模型 (用于导出)
  QuoteCanvasModel toCanvas() {
    return QuoteCanvasModel(
      background: background,
      textLayers: [
        TextLayer(
          id: 'mini_title',
          text: text,
          fontSize: fontSize,
          fontWeight: FontWeight.bold,
          color: textColor,
        ),
      ],
    );
  }

  MiniEditorState copyWith({
    String? text,
    double? fontSize,
    Color? textColor,
    BackgroundLayer? background,
    bool? isExporting,
  }) {
    return MiniEditorState(
      text: text ?? this.text,
      fontSize: fontSize ?? this.fontSize,
      textColor: textColor ?? this.textColor,
      background: background ?? this.background,
      isExporting: isExporting ?? this.isExporting,
    );
  }
}

// ============================================================
// 迷你编辑器 StateNotifier
// ============================================================

/// 迷你编辑器状态控制器 — 无撤销/重做，无多图层
class MiniEditorNotifier extends Notifier<MiniEditorState> {
  @override
  MiniEditorState build() => const MiniEditorState(text: '在此输入文字');

  void updateText(String text) {
    state = state.copyWith(text: text);
  }

  void updateFontSize(double size) {
    state = state.copyWith(fontSize: size);
  }

  void updateTextColor(Color color) {
    state = state.copyWith(textColor: color);
  }

  void updateBackground(BackgroundLayer bg) {
    state = state.copyWith(background: bg);
  }

  void setExporting(bool exporting) {
    state = state.copyWith(isExporting: exporting);
  }
}

// ============================================================
// Provider
// ============================================================

/// 迷你编辑器 Provider — family 支持不同初始值
final miniEditorProvider =
    NotifierProvider<MiniEditorNotifier, MiniEditorState>(
      MiniEditorNotifier.new,
    );

/// 迷你编辑器参数
class MiniEditorParams {
  const MiniEditorParams({this.initialText, this.initialBackground});

  final String? initialText;
  final BackgroundLayer? initialBackground;

  @override
  bool operator ==(Object other) =>
      identical(this, other) ||
      other is MiniEditorParams &&
          runtimeType == other.runtimeType &&
          initialText == other.initialText &&
          initialBackground == other.initialBackground;

  @override
  int get hashCode => Object.hash(initialText, initialBackground);
}