import 'package:flisp_app/models/flisp.dart';
import 'package:flisp_app/provider/flisp_provider.dart';
import 'package:flutter/material.dart';
import 'package:flutter_form_builder/flutter_form_builder.dart';
import 'package:provider/provider.dart';

class FlispForm extends StatefulWidget {
  final GlobalKey<FormBuilderState> formKey;
  final bool isEditing;
  final Flisp? initialFlisp;

  const FlispForm({
    super.key,
    required this.formKey,
    required this.isEditing,
    this.initialFlisp,
  });

  @override
  State<FlispForm> createState() => _FlispFormState();
}

class _FlispFormState extends State<FlispForm> {
  @override
  void initState() {
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    final int maxContentCount = 30;
    final provider = Provider.of<FlispProvider>(context);

    Widget buildTitle() {
      return Row(
        children: [
          Icon(
            widget.isEditing ? Icons.edit_note : Icons.add_task,
            color: Colors.orange,
            size: 24,
          ),
          SizedBox(width: 8),
          Text(
            widget.isEditing ? '编辑闪灵' : '添加闪灵',
            style: TextStyle(
              fontSize: 20,
              fontWeight: FontWeight.bold,
              color: Colors.orange,
            ),
          ),
        ],
      );
    }

    FormBuilderTextField buildContentField() {
      return FormBuilderTextField(
        name: 'content',
        initialValue: provider.formItem.content,
        onChanged: (value) {
          setState(() {
            provider.formItem.content = value ?? '';
          });
        },
        decoration: InputDecoration(
          labelText: '内容',
          hintText: '请输入闪灵内容...',
          counterText: '',
          suffixText: '${provider.formItem.content.length}/$maxContentCount',
          border: OutlineInputBorder(
            borderRadius: BorderRadius.circular(12),
            borderSide: BorderSide(color: Colors.grey.shade200),
          ),
          enabledBorder: OutlineInputBorder(
            borderRadius: BorderRadius.circular(12),
            borderSide: BorderSide(color: Colors.grey.shade200),
          ),
          focusedBorder: OutlineInputBorder(
            borderRadius: BorderRadius.circular(12),
            borderSide: BorderSide(color: Colors.orange),
          ),
          filled: true,
          fillColor: Colors.white,
          prefixIcon: Icon(Icons.description, color: Colors.green),
          contentPadding: EdgeInsets.symmetric(horizontal: 16, vertical: 14),
        ),
        maxLines: 3,
        maxLength: maxContentCount,
        validator: (value) {
          if (value != null && value.length > maxContentCount) {
            return '内容不能超过$maxContentCount个字符';
          }
          return null;
        },
      );
    }

    FormBuilderRadioGroup builderRadioGroup() {
      return FormBuilderRadioGroup<FlispTag>(
        name: 'tag',
        initialValue: provider.formItem.tag,
        decoration: InputDecoration(
          border: InputBorder.none,
          contentPadding: EdgeInsets.zero,
        ),
        orientation: OptionsOrientation.horizontal,
        wrapSpacing: 6,
        options:
            FlispTag.values.map((priority) {
              return FormBuilderFieldOption<FlispTag>(
                value: priority,
                child: Row(
                  mainAxisSize: MainAxisSize.min,
                  children: [Text(priority.label)],
                ),
              );
            }).toList(),
        onChanged: (value) {
          if (value != null) {
            setState(() {
              provider.formItem.tag = value;
            });
          }
        },
      );
    }

    Container buildTagField() {
      return Container(
        decoration: BoxDecoration(
          color: Colors.white,
          borderRadius: BorderRadius.circular(12),
          border: Border.all(color: Colors.grey.shade300, width: 1),
        ),
        padding: EdgeInsets.all(12),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Row(
              children: [
                Icon(Icons.category, color: Colors.orange),
                SizedBox(width: 6),
                Text('分类'),
              ],
            ),
            builderRadioGroup(),
          ],
        ),
      );
    }

    FormBuilder buildForm() {
      return FormBuilder(
        key: widget.formKey,
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            buildContentField(),
            SizedBox(height: 12),
            buildTagField(),
          ],
        ),
      );
    }

    return Padding(
      padding: const EdgeInsets.all(16),
      child: Column(
        mainAxisSize: MainAxisSize.min,
        children: [buildTitle(), SizedBox(height: 20), buildForm()],
      ),
    );
  }
}