// Copyright 2020 Kenton Hamaluik
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:timecop/blocs/timers/bloc.dart';
import 'package:timecop/l10n.dart';
import 'package:timecop/models/timer_entry.dart';

import 'RunningTimerRow.dart';

class RunningTimers extends StatelessWidget {
  const RunningTimers({Key key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return BlocBuilder<TimersBloc, TimersState>(
      builder: (BuildContext context, TimersState timersState) {
        List<TimerEntry> runningTimers = timersState.timers.where((timer) => timer.endTime == null).toList();
        if(runningTimers.isEmpty) {
          return Container();
        }

        DateTime now = DateTime.now();
        Duration runningTotal = Duration(seconds: runningTimers.fold(0, (int sum, TimerEntry t) => sum + now.difference(t.startTime).inSeconds));

        return Material(
          elevation: 4,
          color: Theme.of(context).bottomSheetTheme.backgroundColor,
          child: Column(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            mainAxisSize: MainAxisSize.min,
            crossAxisAlignment: CrossAxisAlignment.stretch,
            children: <Widget>[
              Padding(
                padding: EdgeInsets.fromLTRB(16.0, 8.0, 16.0, 0),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.stretch,
                  children: <Widget>[
                    Row(
                      mainAxisAlignment: MainAxisAlignment.spaceBetween,
                      mainAxisSize: MainAxisSize.max,
                      children: <Widget>[
                        Text(
                          L10N.of(context).tr.runningTimers,
                          style: TextStyle(
                            color: Theme.of(context).accentColor,
                            fontWeight: FontWeight.w700
                          )
                        ),
                        Text(
                          TimerEntry.formatDuration(runningTotal),
                          style: TextStyle(
                            color: Theme.of(context).accentColor,
                            fontFamily: "FiraMono",
                          )
                        )
                      ],
                    ),
                    Divider(),
                  ],
                ),
              ),
            ].followedBy(
              runningTimers.map((timer) => RunningTimerRow(timer: timer, now: timersState.now))
            ).toList(),
          ),
        );
      },
    );
  }
}