import React, { useState, useEffect, useRef, useReducer } from 'react';
import Button from '@mui/material/Button';
import Dialog from '@mui/material/Dialog';
import DialogActions from '@mui/material/DialogActions';  
import DialogContent from '@mui/material/DialogContent';
import DialogContentText from '@mui/material/DialogContentText';
import DialogTitle from '@mui/material/DialogTitle';  
import PropTypes from 'prop-types';
import Box from '@mui/material/Box'; 
import SelectField from "../../Report/SelectField";  
import TextFieldSelectHourBefore from '@mui/material/TextField';
import MenuItem from '@mui/material/MenuItem'; 
import DatePicker from '../../Report/DatePicker'  
import TimerPickerSelect from '../TimerPickerSelect'   
import TextareaAutosize from '@mui/material/TextareaAutosize';  
import { subHours } from "date-fns"; 
 


import { 
  IconButton, 
  Paper,
  Table,
  TableBody,
  TableCell,
  TableHead,
  TableRow, 
} from "@material-ui/core"; 
 
import { DeleteOutline } from "@material-ui/icons"; 
import { toast } from "react-toastify";  import api from "../../../services/api"; 
import toastError from "../../../errors/toastError";
import ConfirmationModal from "../../ConfirmationModal";


const reducer = (state, action) => { 
 

  if (action.type === "LOAD_SCHEDULES") {
    const schedulesContact = action.payload;
    const newSchedules= [];

    schedulesContact.forEach((schedule) => {
      const scheduleIndex = state.findIndex((s) => s.id === schedule.id);
      if (scheduleIndex !== -1) {
        state[scheduleIndex] = schedule;
      } else {
        newSchedules.push(schedule);
      }
    });

    return [...state, ...newSchedules];
  }

  if (action.type === "DELETE_SCHEDULE") {
    const scheduleId = action.payload;
    const scheduleIndex = state.findIndex((q) => q.id === scheduleId);
    if (scheduleIndex !== -1) {
      state.splice(scheduleIndex, 1);
    }
    return [...state];
  }

  if (action.type === "RESET") {
    return [];
  }
};

 

const Item = (props) => {
 
  const { sx, ...other } = props;
  return (
    <Box
      sx={{
        bgcolor: (theme) => (theme.palette.mode === 'dark' ? '#101010' : '#fff'),
        color: (theme) => (theme.palette.mode === 'dark' ? 'grey.300' : 'grey.800'),
        border: '1px solid',
        borderColor: (theme) =>
          theme.palette.mode === 'dark' ? 'grey.800' : 'grey.300',
        p: 1,
        m: 1,
        borderRadius: 2,
        fontSize: '0.875rem',
        fontWeight: '700',
        ...sx,
      }}
      {...other}
    />
  );
}

Item.propTypes = {
  sx: PropTypes.oneOfType([
    PropTypes.arrayOf(
      PropTypes.oneOfType([PropTypes.func, PropTypes.object, PropTypes.bool]),
    ),
    PropTypes.func,
    PropTypes.object,
  ]),
}; 
 
 

const Modal = (props) => { 

  // const [clientSchedules, dispatch] = useReducer(reducer, []);
  const [selectedSchedule, setSelectedSchedule] = useState(null);
  const [confirmModalOpen, setConfirmModalOpen] = useState(false); 
   
  const [open, setOpen] = useState(true);
  const [scroll, /*setScroll*/] = useState('body');
  const [scheduleId, setScheduling] = useState(null)  
  const [startDate, setDatePicker] = useState(new Date())  
  const [timerPicker, setTimerPicker] = useState(new Date()) 
  const [textArea1, setTextArea1] = useState()  
 

  const [data] = useState(props.schedules) 
 
  const [schedulesContact, dispatch] =  useReducer(reducer, []); 

  const [currencyHourBefore, setCurrency] = useState(null);
  const [currenciesTimeBefore, setCurrenciesTimeBefore] = useState( ); 
 
  const handleCancel = (event, reason) => {

    if (reason && reason === "backdropClick") 
        return;
 
    setOpen(false);
  };

 

  useEffect(() => { 
    
    (async () => { 
      try {       

        const { data } = await api.get("/tickets/" + props.ticketId); 
        
        dispatch({ type: "LOAD_SCHEDULES", payload: data.schedulesContact });
 
      } catch (err) {
        toastError(err); 
      }
    })();
  }, [props]);
 
 

  function greetMessageSchedule(scheduleDate){
    return  `podemos confirmar sua consulta agendada para hoje às ${scheduleDate}?`
  }
 
  function formatedTimeHour(timer){
    return  `${timer.getHours().toString().padStart(2, '0')}:${timer.getMinutes().toString().padStart(2, '0')}`
  }

  const hoursBeforeAvalible = (timer) =>{  

      let hours = []
      let hour = 1       

      if(startDate === dateCurrentFormated()){

        console.log('HOJE++++')

        while(subHours(timer, hour).getHours()>=6 && 
        subHours(timer, hour).getHours()>=new Date().getHours() && 
        subHours(timer, hour).getHours()<=19){

          console.log('******** TIMER: ', formatedTimeHour(subHours(timer,hour)))
  
          hours.push(
            {value: formatedTimeHour(subHours(timer,hour)), 
            label: `${hour} HORA ANTES DO HORÁRIO DO AGENDAMENTO`})
  
          hour++;
        }

        if(hours.length>1){ 
          console.log('entrou----------------------: ', hours.length) 
          hours.pop() 
          setCurrency(hours[0].value) 
        }
        else{
          setCurrency(null)
        } 

      }
      else{ 

        while(subHours(timer, hour).getHours()>=6 && subHours(timer, hour).getHours()<=19){

          console.log('******** another day TIMER: ', formatedTimeHour(subHours(timer,hour)))
  
          hours.push(
            {value: formatedTimeHour(subHours(timer,hour)), 
            label: `${hour} HORA ANTES DO HORÁRIO DO AGENDAMENTO`})
  
          hour++;
        }

        if(hours.length>0){ 
          console.log('entrou----------------------: ', hours.length)  
          setCurrency(hours[0].value) 
        }
        else{
          setCurrency(null)
        } 

      }
 
   
      return {time: hours, hour:hour}       

  }

   

  const handleCloseConfirmationModal = () => {
    setConfirmModalOpen(false);
    setSelectedSchedule(null);
  };
  

  const handleDeleteSchedule = async (scheduleId) => {
    try {
      await api.delete(`/schedule/${scheduleId}`);
      toast.success(("Agendamento deletado com sucesso!")); 
      dispatch({ type: "DELETE_SCHEDULE", payload: scheduleId }); 
    } catch (err) {
      toastError(err);
    }
    setSelectedSchedule(null);
  };

  // Get from child 2
const datePickerValue = (data) => { 
  console.log('datePickerValue: ',(data));   
  setDatePicker(data) 
}

// Get from child 3
const timerPickerValue = (data) => { 
  console.log('timerPickerValue: ',(data));   
  setTimerPicker(data)
}

const dateCurrentFormated = () => { 

  let date = new Date()
  let day = date.getDate().toString().padStart(2, '0');
  let month = (date.getMonth()+1).toString().padStart(2, '0');
  let year = date.getFullYear();   
   
  return `${year}-${month}-${day}`

}

  const handleChatEnd = (event, reason) => {   
 

    if (reason && reason === "backdropClick") 
        return;

    if (scheduleId === '1'){ 
    }
    else if(textArea1 && textArea1.trim().length<10){
      alert('Mensagem muito curta!\nMínimo 10 caracteres.')
      return
    }
    else if((new Date(timerPicker).getHours() > 20 && new Date(timerPicker).getMinutes() > 0) ||
    (new Date(timerPicker).getHours() < 7)){
      alert('Horário comercial inválido!\n Selecione um horário de lembrete válido entre às 07:00 e 20:00')
      return
    }
    else if(!currencyHourBefore){

      alert('Para agendamentos do dia corrente, essa funcionalidade atende a agendeamentos com no mínimo 2 horas adiantado a partir da hora atual!')

      return

    }
    // else if(startDate === dateCurrentFormated()){    
    //   if(  
    //       (new Date(subHours(timerPicker, 1)).getHours() <= new Date().getHours() && 
    //       new Date(subHours(timerPicker, 1)).getMinutes() <= new Date().getMinutes()) ||

    //       (new Date(subHours(timerPicker, 1)).getHours() == new Date().getHours() && 
    //       new Date(subHours(timerPicker, 1)).getMinutes() <= new Date().getMinutes())
          
    //       )
    //   {

    //     alert('Para agendamentos do dia, é necessário que o horário do lembrete seja no mínimo uma hora adiantado!')

    //     return
    //   }
    // }    


   
 

    props.func({ 
      'scheduleId': scheduleId,   
      // 'schedulingDate': startDate+' '+formatedTimeHour(subHours(new Date(`${startDate} ${timerPicker.getHours()}:${timerPicker.getMinutes()}:${timerPicker.getSeconds()}`), 1))+':00',
      // 'schedulingDate': `${startDate} ${timerPicker.getHours()}:${timerPicker.getMinutes()}:${timerPicker.getSeconds()}`,
      'schedulingDate': `${startDate} ${currencyHourBefore}:00`,
      'schedulingTime': startDate+' '+formatedTimeHour(new Date(`${startDate} ${timerPicker.getHours()}:${timerPicker.getMinutes()}:00`)), 
      'message': textArea1  
    }); 
 

    setOpen(false);
  };
 

  const descriptionElementRef = useRef(null);
  useEffect(() => {
    if (open) {
      const { current: descriptionElement } = descriptionElementRef;
      if (descriptionElement !== null) {
        descriptionElement.focus();
      }
    }
  }, [open]);


  // Get from child 1
const textFieldSelect = (data) => {
  console.log('textFieldSelect: ',data);  
  setScheduling(data)
}


const handleChangeHourBefore = (event) => {

  console.log('textFihandleChangeHourBefore: ',event.target.value);  

  setCurrency(event.target.value); 

};


 



// Get from child 4
// const textArea1Value = (data) => { 
//   console.log('textArea1Value: ',(data));   
//   setTextArea1(data)
// } 

useEffect(()=>{

  setCurrenciesTimeBefore(hoursBeforeAvalible(timerPicker).time)    
     
},[timerPicker, startDate]) 

  
useEffect(()=>{

  console.log('CURRENCY HOUR BEFORE: ',  `${startDate} ${currencyHourBefore}:00`)

  let auxDate = new Date(`${startDate} ${currencyHourBefore}:00`)

  if (parseInt(auxDate.getHours()) > 11  && parseInt(auxDate.getHours()) < 18){ 

     setTextArea1('Boa tarde, '+greetMessageSchedule( formatedTimeHour(new Date(timerPicker), 1)))
  }
  else if(parseInt(auxDate.getHours()) < 12){ 
    setTextArea1('Bom dia, '+greetMessageSchedule( formatedTimeHour(new Date(timerPicker), 1)))
  }
  else if(parseInt(auxDate.getHours()) > 17){  
    setTextArea1('Boa noite, '+greetMessageSchedule( formatedTimeHour(new Date(timerPicker), 1)))
  }   

},[currencyHourBefore, startDate])


const handleChange = (event) => {
    
  setTextArea1(event.target.value);

};
 


  return ( 

 
 
 
<Dialog 
        open={open}
        onClose={handleCancel} 
        // fullWidth={true}
        // maxWidth={true}    
        disableEscapeKeyDown

        scroll={scroll}
        aria-labelledby="scroll-dialog-title"
        aria-describedby="scroll-dialog-description"
      >   

        <DialogTitle id="scroll-dialog-title">{props.modal_header}</DialogTitle>
        <DialogContent dividers={scroll === 'body'}>

          <DialogContentText
            id="scroll-dialog-description"
            ref={descriptionElementRef}
            tabIndex={-1}
          >
            
          </DialogContentText> 

              
            <Box
                  sx={{
                    width: 500,
                    height: '100%',
                    // backgroundColor: 'primary.dark',
                    // '&:hover': {backgroundColor: 'primary.main', opacity: [0.9, 0.8, 0.7],},
                  }}> 

                      <Box  sx={{
                          display: 'grid',  
                        }}>
                        <Item>
                            <span>Selecione uma opção para encerrar o Atendimento</span> 
                            
                            <SelectField func={textFieldSelect} 
                            emptyField={false} 
                            header={'Opções de encerramento do atendimento'} 
                            currencies={data.map((obj)=>{
                                      return {'value': obj.id, 'label': obj.name}
                                    })}/>
                            

                        </Item> 

                      </Box> 
                      
                      {scheduleId==='2' &&
                      
                      <Item> 

                        <span>Lembrete de retorno</span>

                      <Box sx={{ display: 'grid', gridTemplateColumns: 'repeat(2, 1fr)' }}> 
                        
                        <Item><DatePicker func={datePickerValue} minDate = {true} title={'Data do agendamento'}/></Item>
                        
                        <Item><TimerPickerSelect func={timerPickerValue} title={'Hora do agendamento'}/></Item>
                           
                      </Box>


                      <Box sx={{display: 'flex', flexDirection: 'column' }}>    
                      
                      {currencyHourBefore &&
                        <Item>                      
                          <TextFieldSelectHourBefore
                          id="outlined-select-currency"
                          select
                          label="Enviar mensagem para cliente"
                          value={currencyHourBefore}
                          size="small"
                          onChange={handleChangeHourBefore} 
                        >
                          {currenciesTimeBefore.map((option) => (
                            <MenuItem key={option.value} value={option.value}>
                              {option.label}
                            </MenuItem>
                          ))}
                        </TextFieldSelectHourBefore>
                        </Item>
                      }

                        
                        <Item>
                          <TextareaAutosize 
                              aria-label="minimum height"
                              minRows={3}  
                              value={textArea1}
                              placeholder={'Mensagem para lembrar cliente'}   
                              onChange={ handleChange}  
                              style={{ width: '100%' }}
                          />
                        </Item>
                      </Box>

                    </Item>
                    } 

                    {schedulesContact.length>0 && 

                    

                    <Item> 

          <ConfirmationModal
            title={selectedSchedule && `Deletar agendamento do dia ${selectedSchedule.schedulingTime.split(' ')[0]}  ${selectedSchedule.schedulingTime.split(' ')[1]} ?`}
            open={confirmModalOpen}
            onClose={handleCloseConfirmationModal}
            onConfirm={() => handleDeleteSchedule(selectedSchedule.id)}
          >
            <span>Deseja realmente deletar esse Agendamento? </span>
          </ConfirmationModal> 
                          <span>Agendamentos</span>
                    <Paper  variant="outlined"> 
                      <Table size="small">
                       
                        <TableHead>
                          <TableRow>
                            <TableCell align="center">
                              Data
                            </TableCell>
                            <TableCell align="center">
                              Hora 
                            </TableCell> 
                            <TableCell align="center">
                              Deletar
                            </TableCell>
                          </TableRow>
                        </TableHead>
                        
                        <TableBody>
                          <>
                            {schedulesContact.map((scheduleData, index) => (
                              <TableRow key={scheduleData.id}>
                                <TableCell align="center">{scheduleData.schedulingDate.split(' ')[0]}</TableCell>
                                <TableCell align="center">{scheduleData.schedulingTime.split(' ')[1]}</TableCell> 
                                <TableCell align="center"> 
              
                                  <IconButton
                                    size="small"
                                    onClick={() => { 
                                      setSelectedSchedule(scheduleData);
                                      setConfirmModalOpen(true);
                                     
                                    }}
                                  >
                                    <DeleteOutline />
                                  </IconButton>
                                </TableCell>

                              </TableRow>
                            ))} 
                          </>
                        </TableBody>
                      </Table>
                    </Paper>  
                    </Item>}
                     
                      
            </Box>   
        </DialogContent>
        
 
        <DialogActions>     
          <div style={{marginRight:'50px'}}>
          <Button onClick={handleCancel}>Cancelar</Button>  
          </div>
          <Button onClick={handleChatEnd}>Ok</Button>  
        </DialogActions>
      </Dialog> 
 

  );
}

export default Modal