import React, { useState, useRef, useEffect } from 'react';
import styled from 'styled-components';
import { useCallFeed } from '@/hooks';
import { router } from 'expo-router';
import { Platform, Linking, View, ScrollView, Text, TouchableOpacity } from 'react-native';
import { StatusBar } from 'expo-status-bar';
import { SafeAreaView } from 'react-native-safe-area-context';
import {
  PageHeader,
  PageFooter,
} from '@/components/generalHelpers.jsx';
import { Ionicons } from '@expo/vector-icons';
import { AccidentAndEmergency } from "healthicons-react-native/dist/outline";
import ActionSheet from 'react-native-actions-sheet';

const DepartmentActionSheet = styled(ActionSheet)``;

function toBase64Unicode(str) {
  return btoa(new TextEncoder().encode(str).reduce((data, byte) => data + String.fromCharCode(byte), ''));
}

export default function Incidents() {
  const actionSheetRef = useRef(null);
  const callFeed = useCallFeed();

  const {
    departments,
    callIconMap,
    callDetails,
    callColorSelector,
    formatCallTimePast,
    formatCallDateTime
  } = callFeed;

  const sortedAndFilteredCalls = callDetails.sort((a, b) => new Date(b.timestamp) - new Date(a.timestamp))
    .filter((item, index, self) => {
      return index === self.findIndex(i => {
        return `${i?.incident?.incID}${i?.response?.serviceName}` === `${item?.incident?.incID}${item?.response?.serviceName}`
      });
    })?.map(item => { return {...item, timestamp: item?.incident?.incDate} })
    || [];

  const {
    departmentTypeMap,
    accountDetails,
    deptList,
    setDeptList,
    selectedDepartment,
    setSelectedDepartment,
    updateSelectedDepartment,
    selectedDepartmentColorPicker,
  } = departments;

  return (
    <React.Fragment>
      <PageHeader 
        centerHeader={<TouchableOpacity
            style={{
              borderRadius: 6,
              elevation: 3,
              backgroundColor: '#fff',
              shadowOffset: { width: 0, height: 0 },
              shadowColor: '#333',
              shadowOpacity: .8,
              shadowRadius: 2,
              paddingHorizontal: 10,
              paddingVertical: 2,
            }}
            onPress={() => {
              actionSheetRef.current?.show();
            }}
          >
            <Text
              style={{
                color: selectedDepartmentColorPicker(selectedDepartment?.type),
                fontWeight: 600,
                fontSize: 14
              }}
            >
              {selectedDepartment?.deptAbv}
            </Text>
          </TouchableOpacity>}
      />
      <ScrollView>
        <StatusBar style="dark" />
        <SafeAreaView />
        <View style={{ flexDirection: 'column', padding: 20 }}>
          {sortedAndFilteredCalls?.length ? (
            sortedAndFilteredCalls?.map((callItem, index) => {
              const { incident, address, response, timestamp } = callItem;
              const {
                serviceNumber,
                incDate,
                incNature,
                incNatureCode,
                incNatureCodeDesc,
                status,
              } = incident;
              const {
                streetAddress,
                addressApartment,
                town,
                state,
                locationName,
              } = address;
              const {
                serviceName
              } = response;
              const SelectedIcon = callIconMap[incNature] || AccidentAndEmergency;
              return (
                <TouchableOpacity
                  key={`callDetails - ${timestamp}`}
                  style={{ paddingBottom: 15 }}
                  onPress={() => {
                    router.push({
                      pathname: '/call',
                      params: {
                        callDetails: toBase64Unicode(JSON.stringify(callItem))
                      }
                    })
                  }}
                >
                  <View
                    style={{
                      borderRadius: 12,
                      elevation: 3,
                      backgroundColor: '#fff',
                      shadowOffset: { width: 0, height: 0 },
                      shadowColor: callColorSelector(
                        incNatureCodeDesc,
                        incNature,
                        status
                      ),
                      shadowOpacity: 1,
                      shadowRadius: 5,
                      padding: 10,
                    }}
                  >
                    <View style={{ flexDirection: 'column' }}>
                      <View key="callDateAndTime"
                        style={{
                          paddingBottom: 6,
                          flexDirection: 'row',
                          justifyContent: 'space-between'
                        }}
                      >
                        <Text style={{ fontSize: 12 }}>{formatCallDateTime(incDate)}</Text>
                        <View style={{ flexDirection: 'row', alignItems: 'center' }}>
                          <Text style={{ fontSize: 12 }}>{formatCallTimePast(incDate)}</Text>
                          {status === 'CLOSED' ? (
                            <Ionicons
                              name="lock-closed-outline"
                              color='red'
                              style={{
                                shadowColor: 'black',
                                shadowOffset: 0,
                                shadowOpacity: 1,
                                shadowRadius: 10
                              }}
                            />
                          ) : null}
                        </View>
                      </View>
                      <View style={{ flexDirection: 'row', alignItems: 'center' }}>
                        <SelectedIcon
                          color={callColorSelector(
                            incNatureCodeDesc,
                            incNature,
                            status
                          )}
                          opacity={0.3}
                          width={56}
                          height={56}
                        />
                        <View style={{ flex: 1, flexDirection: 'column', alignItems: 'flex-start', paddingHorizontal: 2, maxWidth: '80%' }}>
                          {locationName ? (
                            <Text
                              style={{
                                color: 'black',
                                fontWeight: 600,
                                fontSize: 16
                              }}
                            >
                              {`${locationName}`}
                            </Text>
                          ) : (
                            <View style={{ flexDirection: 'row' }}>
                              <Text
                                style={[{
                                  color: 'black',
                                  fontSize: 12,
                                  fontWeight: 600
                                }]}
                              >
                                {`${streetAddress?.split(',')[0]}`}
                              </Text>
                              {addressApartment ? (
                                <Text
                                  style={[{
                                    color: 'black',
                                    fontSize: 12,
                                    fontWeight: 600
                                  }]}
                                >
                                  {` - ${addressApartment}`}
                                </Text>
                              ) : null}
                              <Text
                                style={[{
                                  color: 'black',
                                  fontSize: 12,
                                  fontWeight: 600
                                }]}
                              >
                                {` ${town}, ${state}`}
                              </Text>
                            </View>
                          )}
                          <Text
                            style={{
                              color: 'black',
                              fontWeight: 600,
                              fontSize: 16
                            }}
                          >
                            {`${incNature}`}
                          </Text>
                          <View style={{ flexDirection: 'row', justifyContent: 'space-between' }}>
                            <Text
                              style={{
                                color: 'black',
                                fontSize: 12,
                                textShadowColor: callColorSelector(
                                  incNatureCode,
                                  incNature,
                                  status
                                ),
                                textShadowRadius: 1
                              }}
                            >
                              {`${incNatureCodeDesc}`}
                            </Text>
                          </View>
                        </View>
                        <View style={{ padding: 0 }}>
                          <View>
                            <Ionicons name="chevron-forward-outline" />
                          </View>
                        </View>
                      </View>
                      <View style={{ paddingTop: 5, flexDirection: 'row', justifyContent: 'space-between' }}>
                        <Text
                          style={{
                            fontSize: 12,
                          }}
                        >
                          Service: {serviceName}
                        </Text>
                        <Text
                          style={{
                            fontSize: 12,
                            textAlign: 'right'
                          }}
                        >
                          {`Incident #: ${serviceNumber}`}
                        </Text>
                      </View>
                    </View>
                  </View>
                </TouchableOpacity>
              )
            })) : (
            <Text>There are no Calls</Text>
          )}
        </View>
      </ScrollView>
      <PageFooter>
        <View
          style={{
            flexDirection: 'column',
            height: 100,
            alignItems: 'center',
            justifyContent: 'flex-start',
            paddingTop: 7
          }}
        />
      </PageFooter>
      <DepartmentActionSheet
        ref={actionSheetRef}
        gestureEnabled
        containerStyle={{
          height: "50%",
          width: "100%",
          backgroundColor: '#ECEDEE',
        }}
      >
        <View style={{ flexDirection: 'column', padding: 20 }}>
          {deptList?.map((item) => {
            return (
              <View style={{ padding: 2 }} key={item?.deptId}>
                <TouchableOpacity
                  style={{
                    borderRadius: 6,
                    elevation: 3,
                    backgroundColor: item?.selected ? 'grey' : '#fff',
                    shadowOffset: { width: 1, height: 1 },
                    shadowColor: '#333',
                    shadowOpacity: 0.3,
                    shadowRadius: 2,
                    marginHorizontal: 20,
                    marginVertical: 6,
                    padding: 10
                  }}
                  onPress={() => {
                    actionSheetRef.current?.hide();
                    return updateSelectedDepartment(
                      selectedDepartment?.deptId,
                      item?.deptId
                    )
                  }}
                >
                  <View style={{ flexDirection: 'row', justifyContent: 'space-between' }}>
                    <Text
                      style={{
                        color: selectedDepartmentColorPicker(
                          item?.type
                        ),
                        fontWeight: 600,
                        fontSize: 16
                      }}
                    >
                      {item?.dept}
                    </Text>
                    {item?.primary ? <Ionicons name="star" size={16} color="yellow" style={{
                      paddingLeft: 20,
                      shadowColor: '#333',
                      shadowOffset: 1,
                      shadowOpacity: 1,
                      shadowRadius: 6
                    }} /> : null}
                  </View>
                  <Text>{`${item?.deptAbv} - ${departmentTypeMap[item?.type]}`}</Text>
                </TouchableOpacity>
              </View>
            );
          })}
        </View>
      </DepartmentActionSheet>
    </React.Fragment>
  )
}