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

import '../controllers/scheduler_command_controller.dart';
import '../controllers/scheduler_read_controller.dart';
import 'read_state_view.dart';
import 'schedule_components.dart';

class TodayPane extends StatelessWidget {
  const TodayPane({
    required this.controller,
    this.commandController,
    super.key,
  });

  final UiReadController<TodayState> controller;
  final SchedulerCommandController? commandController;

  @override
  Widget build(BuildContext context) {
    return ReadStateView<TodayState>(
      controller: controller,
      title: 'Today',
      emptyTitle: 'Today is clear',
      emptyMessage: 'No scheduled work is waiting in this view.',
      dataBuilder: (context, state) =>
          TodayContent(state: state, commandController: commandController),
    );
  }
}

class TodayContent extends StatelessWidget {
  const TodayContent({required this.state, this.commandController, super.key});

  final TodayState state;
  final SchedulerCommandController? commandController;

  @override
  Widget build(BuildContext context) {
    return ListView(
      padding: const EdgeInsets.all(16),
      children: [
        Text('Today', style: Theme.of(context).textTheme.headlineMedium),
        const SizedBox(height: 12),
        for (final notice in state.pendingNotices)
          NoticeBanner(message: notice.message),
        CompactPanel(items: state.compactState.compactItems),
        Text('Timeline', style: Theme.of(context).textTheme.titleMedium),
        const SizedBox(height: 8),
        for (final item in state.timelineItems)
          TimelineRow(
            item: item,
            onDone: _canComplete(item) && commandController != null
                ? () {
                    return commandController!.completeFlexibleTask(
                      taskId: item.taskId!,
                    );
                  }
                : null,
          ),
      ],
    );
  }

  bool _canComplete(TodayTimelineItem item) {
    return item.taskType == TaskType.flexible &&
        item.taskStatus == TaskStatus.planned &&
        item.taskId != null;
  }
}