import 'package:datetime_picker_formfield/datetime_picker_formfield.dart';
import 'package:flutter/material.dart';
import 'package:intl/intl.dart' as intl;
import 'package:go_router/go_router.dart';
import 'package:oc_front/core/services/specialized_services/logs_service.dart';
import 'package:oc_front/core/services/specialized_services/workflow_execution_service.dart';
import 'package:oc_front/main.dart';
import 'package:oc_front/models/workflow.dart';
import 'package:oc_front/pages/abstract_page.dart';
import 'package:oc_front/widgets/sheduler_items/schedule.dart';

class  SchedulerFactory implements AbstractFactory {
  @override GlobalKey getKey() { return key; }
  static GlobalKey<SchedulerPageWidgetState> key = GlobalKey<SchedulerPageWidgetState>();
  @override bool searchFill() { return false; }
  @override Widget factory(GoRouterState state, List<String> args) { return SchedulerPageWidget(); }
  @override void search(BuildContext context, bool special) { }
}

class SchedulerPageWidget extends StatefulWidget {
  bool isList = true;
  DateTime start = DateTime.now();
  DateTime end = DateTime.now().add(const Duration(days: 180));
  final WorkflowExecutionService _service = WorkflowExecutionService();
  SchedulerPageWidget(): super(key: SchedulerFactory.key);
  @override SchedulerPageWidgetState createState() => SchedulerPageWidgetState();
  static void search(BuildContext context) { }
  static Widget factory() { return SchedulerPageWidget(); }
}
class SchedulerPageWidgetState extends State<SchedulerPageWidget> {
  List<Color> colors = [Colors.blue, Colors.orange, redColor, Colors.green, redColor];
  List<String> titles = ["SCHEDULED", "RUNNING", "FAILURE", "SUCCESS", "MISSED"];
  
  @override Widget build(BuildContext context) {
    return FutureBuilder(
      future: widget._service.search(context, [ 
        "${widget.start.year}-${widget.start.month > 9 ? widget.start.month : "0${widget.start.month}"}-${widget.start.day > 9 ? widget.start.day : "0${widget.start.day}"}", 
        "${widget.end.year}-${widget.end.month > 9 ? widget.end.month : "0${widget.end.month}"}-${widget.end.day > 9 ? widget.end.day : "0${widget.end.day}"}"], {}),
      builder: (ctx, as) { 
        Map<String, List<WorkflowExecution>> data = {};
        if (as.hasData && as.data!.data != null) {
          for (var element in as.data!.data!.executions) {
            if (element.executionData == null) { continue; }
            DateTime dateTime = DateTime.parse(element.executionData!);
            DateTime date = DateTime(dateTime.year, dateTime.month, dateTime.day);
            var str = "${date.toIso8601String()}Z";
            if (data[str] == null) { data[str] = []; }
            data[str]!.add(element);
            data[str]!.sort((a, b) => DateTime.parse(a.executionData!).compareTo(DateTime.parse(b.executionData!)));
          }
        }
        GlobalKey<ScheduleWidgetState> k = GlobalKey<ScheduleWidgetState>();
        for (var da in data.keys) {
          for (var exec in data[da]!) {
            String start = "";
            String end = "";
            try {
              if (exec.endDate != null && exec.endDate != "") {
                var startD = DateTime.parse(exec.executionData!);
                var endD = DateTime.parse(exec.endDate!);
                var diff = endD.difference(startD);
                if (diff.inDays < 30) {
                  var rest = ((30 - diff.inDays) ~/ 2) - 1;
                  start = (startD.subtract(Duration(days: rest)).microsecondsSinceEpoch).toString();
                  end = (endD.add(Duration(days: rest)).microsecondsSinceEpoch).toString();
                } else {
                  start = (startD.microsecondsSinceEpoch).toString();
                  end = (startD.add( const Duration(days: 29)).microsecondsSinceEpoch).toString();
                }
              } else {
                start = (DateTime.parse(exec.executionData!).subtract( const Duration(days: 14)).microsecondsSinceEpoch).toString();
                end = (DateTime.parse(exec.executionData!).add( const Duration(days: 14)).microsecondsSinceEpoch).toString();
              }
            } catch(e) { /* */ }
            k.currentState?.setState(() { k.currentState?.widget.loading = true; });
            LogsService().search(context, [], {
              "workflow_execution_id": exec.id,
              "start": start,
              "end": end
            }).then((value) {
              if (value.data != null) {
                var d = value.data!;
                for( var r in d.result) {
                  for (var element in r.logs) {
                    element.level = r.level;
                    exec.logs ??= [];
                    exec.logs!.add(element);
                  }
                  exec.logs?.sort((a, b) => a.timestamp!.compareTo(b.timestamp!));
                }
              }  
              k.currentState?.setState(() { k.currentState?.widget.loading = false; });      
            });
          }          
        }
        return Column( children: [
          Container( color: lightColor,
            height: 50, width: getMainWidth(context),
            child: Padding(padding: const EdgeInsets.symmetric(horizontal: 50),
              child: Row( children: [
                Padding(padding: const EdgeInsets.only(right: 30),
                  child: Tooltip( message: widget.isList ? "calendar view" : "list view",
                    child: InkWell( child: Icon( widget.isList ? Icons.calendar_month : Icons.list, color: Colors.white 
                      , size: 25 ),
                      onTap: () { 
                        widget.isList = !widget.isList;
                        k.currentState?.setState(() { k.currentState?.widget.isList = widget.isList; });
                      })
                  ),
                ), 
                Container(padding: const EdgeInsets.only(left: 20),
                  width: getMainWidth(context) / 5,
                  height: 30,
                  child: DateTimeField( 
                                validator: (value) {
                                  return null;
                                },
                                resetIcon: null,
                                onShowPicker: (context, currentValue) async { 
                                  var date = await showDatePicker(                                    
                                    builder: (BuildContext context, Widget? child) {
                                      Widget w = Theme(
                                        data: ThemeData(
                                          cardTheme: CardTheme(elevation: 0, shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(0))),
                                          dialogTheme: DialogTheme(elevation: 0, shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(0))),
                                          colorScheme: ColorScheme.light(
                                            background: midColor,
                                            tertiary: Colors.grey,
                                            secondary: Colors.grey,
                                            primary: Colors.black),
                                        ),
                                        child: child ?? Container(),
                                      );
                                      return w;
                                    },
                                    context: context,
                                    firstDate: DateTime(1900),
                                    initialDate: widget.start,
                                    lastDate: DateTime(2100)
                                  );
                                  return date;
                                },
                                
                                format: intl.DateFormat('y-M-dd hh:mm:ss'),
                                initialValue: widget.start,
                                onChanged: (value) { 
                                  if (value == null) { return; }
                                  setState(() { widget.start = value; });
                                },
                                style: const TextStyle(fontSize: 12),
                                decoration: const  InputDecoration(
                                  fillColor: Colors.white,
                                  floatingLabelBehavior: FloatingLabelBehavior.always,
                                  filled: true,
                                  alignLabelWithHint: false,
                                  hintText: "enter start date...",
                                  labelText: "",
                                  errorStyle: TextStyle(fontSize: 0),
                                  hintStyle: TextStyle(fontSize: 10),
                                  labelStyle: TextStyle(fontSize: 15, color: Colors.black, fontWeight: FontWeight.w500),
                                  enabledBorder: OutlineInputBorder(borderSide: BorderSide(color: Colors.transparent)),
                                  border: OutlineInputBorder(borderSide: BorderSide(color: Colors.transparent)),
                                  contentPadding: EdgeInsets.symmetric(horizontal: 10, vertical: 5),
                                ),
                          )
                ),
                Container(padding: const EdgeInsets.only(left: 20), 
                  child: const Text("TO", style: TextStyle(color: Colors.white, fontSize: 15, fontWeight: FontWeight.w500))),
                Container( padding: const EdgeInsets.only(left: 20, right: 20),
                  width: getMainWidth(context) / 5,
                  height: 30,
                  child: DateTimeField( 
                                validator: (value) {
                                  return null;
                                },
                                resetIcon: null,
                                onShowPicker: (context, currentValue) async { 
                                  var date = await showDatePicker(                                    
                                    builder: (BuildContext context, Widget? child) {
                                      Widget w = Theme(
                                        data: ThemeData(
                                          cardTheme: CardTheme(elevation: 0, shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(0))),
                                          dialogTheme: DialogTheme(elevation: 0, shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(0))),
                                          colorScheme: ColorScheme.light(
                                            background: midColor,
                                            tertiary: Colors.grey,
                                            secondary: Colors.grey,
                                            primary: Colors.black),
                                        ),
                                        child: child ?? Container(),
                                      );
                                      return w;
                                    },
                                    context: context,
                                    firstDate: DateTime(1900),
                                    initialDate: widget.end,
                                    lastDate: DateTime(2100)
                                  );
                                  return date;
                                },
                                format: intl.DateFormat('y-M-dd hh:mm:ss'),
                                initialValue: widget.end,
                                onChanged: (value) { 
                                  if (value == null) { return; }
                                  setState(() { widget.start = value; });
                                },
                                style: const TextStyle(fontSize: 12),
                                decoration: const  InputDecoration(
                                  fillColor: Colors.white,
                                  floatingLabelBehavior: FloatingLabelBehavior.always,
                                  filled: true,
                                  alignLabelWithHint: false,
                                  hintText: "enter end date...",
                                  labelText: "",
                                  errorStyle: TextStyle(fontSize: 0),
                                  hintStyle: TextStyle(fontSize: 10),
                                  labelStyle: TextStyle(fontSize: 15, color: Colors.black, fontWeight: FontWeight.w500),
                                  enabledBorder: OutlineInputBorder(borderSide: BorderSide(color: Colors.transparent)),
                                  border: OutlineInputBorder(borderSide: BorderSide(color: Colors.transparent)),
                                  contentPadding: EdgeInsets.symmetric(horizontal: 10, vertical: 5),
                                ),
                          )
                ),
                Tooltip( message: "refresh scheduler",
                  child: InkWell(
                    onTap: () => setState(() {}),
                    child: const Icon(Icons.refresh, color: Colors.white,),
                  ),
                )
              ]))
          ),
          ScheduleWidget( key: k, data: data, start: widget.start, end : widget.end, isList: widget.isList, )
        ]);
    });
  }
}