import * as React from 'react';
import { useState } from 'react';
import { connect } from "react-redux";
import { TouchableOpacity, View, Text, Alert } from 'react-native';
import { openModal } from '../../redux/actions/AlertActions.js';
import CustomHeader from '../../components/header.js';
import Theme from '../../components/theme.style.js';
import Elements from '../../components/elements.js';
import CustomIcon from '../../components/icons.js';
import DB from '../../components/storage';
import CustomForm from './customform';
import moment from 'moment';
import CustomSafeArea from '../../components/safeArea.component.js';

const Tracker = (navigation) => {
  
  const [focus, setfocus] = useState(false);
  const [activeInput, setActiveInput] = useState(false);
  const [datepicker, setdatepicker] = useState(false);
    
  const params = navigation.route ? navigation.route.params : null
  const [date, setdate] = useState(null);
  const [fueltype, setfueltype] = useState(null);
  const [distance, setdistance] = useState(null);
  const [liters, setliters] = useState(null);

  const [update, setupdate] = useState(false);

  if(params.edit && !update){
    setdate(params.edit.date)
    setfueltype(params.edit.fueltype)
    setdistance(params.edit.distance)
    setliters(params.edit.liters)
    setupdate(true)
  }

  const DeleteTracker = async () => {
    let TRACKS = await DB.get("tracker")
    let tracks = TRACKS ? JSON.parse(TRACKS) : []
    let result = []
	  for(var x=0;x<tracks.length;x++){
    	if(params.edit.id == tracks[x].id){
        continue
      }else{
        result.push(tracks[x])
      }
    }
    DB.set("tracker", JSON.stringify(result), function(){
      onDone("deleted")
    }, function(error){
      console.log(error)
    })
  }

  const Update = async () => {
    let TRACKS = await DB.get("tracker")
    let tracks = TRACKS ? JSON.parse(TRACKS) : []
	  for(var x=0;x<tracks.length;x++){
    	if(params.edit.id == tracks[x].id){
        tracks[x].date = date,
        tracks[x].fueltype = fueltype,
        tracks[x].distance = distance,
        tracks[x].liters = liters
      }
    }
    await DB.set("tracker", JSON.stringify(tracks), function(){
      onDone("updated")
    }, function(error){
      console.log("Failed to add:", error)
    })
  }

  const onDone = (task) => {
    const taskToShow = `Fuel Efficiency tracker ${task}`
    
    navigation.route.params?.reload();
    navigation.openModal({
      open: true,
      title: "Tracker",
      body: taskToShow,
      yesCB: () => navigation.navigation.goBack(),
      yesText: "Okay",
      yesButtonOnly: true,
      theme: navigation.app_theme
    })
  }

  return (
    <CustomSafeArea>
      
      <Elements.CustomDatePicker 
        visible={datepicker}
        date={date ? new Date(date) : new Date(Date.now())}
        textColor={navigation.app_theme?.theme.colors.text}
        isDarkMode={navigation.app_theme?.theme.dark}
        modalBackgroundColor={navigation.app_theme?.theme.colors.border} 
        onConfirm={(selectedDate) => {
          setdate(selectedDate ? moment(selectedDate).format("DD MMM YYYY") : date != null ? date : null)
          setdatepicker(false)
        }}
        onCancel={() => setdatepicker(false)}/>
      <CustomHeader 
        title="Edit Tracker" 
        menu={false} 
        back={true} 
        backscreen="Tracker" 
        navigation={navigation}
        rightMenu={
          <TouchableOpacity onPress={() => 
            navigation.openModal({
              open: true,
              title: "Fuel Tracker",
              body: "Do you want to delete this fuel tracker?",
              yesCB: DeleteTracker,
              theme: navigation.app_theme
            })
          } style={{alignSelf: 'flex-end', right: 10}}>
            <CustomIcon.MaterialIcons name="delete" size={25} color="#fff" />
          </TouchableOpacity>
        }/>

        <View style={{marginTop: 20, padding: 0, alignItems: 'center', flex: 1}}>
          <CustomForm 
            items={
              [
                {
                  name: "Date",
                  value: date,
                  disabled: true,
                  onClick: () => setdatepicker(true),
                  onChangeText: (val) => setdate(val)
                },
                {
                  name: "Fuel Type",
                  value: fueltype,
                  disabled: true,
                  onClick: () => navigation.navigation.navigate("AddFuelType", {get: (val) => setfueltype(val)})
                },
                {
                  kb: "numeric",
                  name: "Distance Travelled",
                  icon: 'ios-information-circle-outline',
                  value: distance,
                  onChangeText: (val) => setdistance(val),
                  onFocus: () => distance ? setdistance(distance.includes(" km") ? distance.replace(" km", "") : distance) : null,
                  onBlur: () => distance ? setdistance(distance +  " km") : null,
                  onIconClick: () => Alert.alert("Information", "To measure distance travelled, make sure to reset your trip meter every time you gas full tank.")
                },
                {
                  kb: "numeric",
                  name: "Liters Fueled up",
                  value: liters,
                  onFocus: () => liters ? setliters(liters.includes(" km") ? liters.replace(" km", "") : liters) : null,
                  onBlur: () => liters ? setliters(liters +  " L") : null,
                  onChangeText: (val) => setliters(val)
                }
              ]}/>
        </View>
        <TouchableOpacity 
          onPress={Update} 
          style={{width: '90%', alignSelf: 'center', borderRadius: 10, padding: 15, backgroundColor: Theme.colors.primary, marginBottom: 20}}
          >
          <Text style={{alignSelf: 'center', color: '#fff', fontSize: 16, fontFamily: 'Arial'}}>Save Tracker</Text>
        </TouchableOpacity>
    </CustomSafeArea>
  );
}

const mapStateToProps = (state) => {
  return {
    app_theme: state.appThemeReducer.theme
  }
}

const mapDispatchToProps = {
  openModal
}

export default connect(mapStateToProps, mapDispatchToProps)(Tracker)