import * as React from 'react';
import { 
  ScrollView, 
  TouchableOpacity, 
  View, 
  Text, 
  TextInput, 
  Alert, 
  Platform,
  KeyboardAvoidingView
} from 'react-native';
import { connect } from "react-redux";
import { checkPhoneNumberInput } from '../../utils/number.js';
import CustomHeader from '../../components/header.js';
import Elements from '../../components/elements.js';
import Theme from '../../components/theme.style.js';
import Icon from '../../components/icons.js';
import moment from 'moment';
import DB from '../../components/storage/';
import REQUEST from '../../components/api/';
import MobileValidation from '../../components/api/mobile.js';
import CustomSafeArea from '../../components/safeArea.component.js';
import { dateFormaterForAndroid } from '../../utils/date.js';

const CustomInput = (props) => {

  const titlecolor = props.current == props.index && props.focus ? Theme.colors.accent : Theme.colors.darkGray
  const bordercolor = props.error ? Theme.colors.primary : (props.focus && props.current == 1 ? Theme.colors.accent : 'gray')
  const borderwidth = props.error ? 1.6 : (props.focus && props.current == props.index ? 1.5 : 1)

  const style = {
    container: {flexDirection: 'row', width: '80%', marginTop: props.top || 30, alignItems: 'center'},
    title: {fontSize: 12, color: titlecolor, marginTop: -25, marginBottom: 15},
    input: {width: '100%', fontSize: 16, padding: 0, borderBottomColor: bordercolor, borderBottomWidth: borderwidth, color: props.isDarkMode ? props.textColor : Theme.colors.black},
    error: {fontSize: 12, color: Theme.colors.primary, marginTop: 5, marginBottom: 15}
  }

  return (
    <View style={style.container}> 
      <View style={{flex: 1}}>
        {props.current >= props.index ? 
          <Text style={style.title}>
            {props.title}
          </Text> : null}
        <TextInput
          keyboardType={props.keyboardType || null}
          maxLength={props.maxlength || null} 
          placeholder={props.placeholder || props.title || null}
          placeholderTextColor={props.isDarkMode ? Theme.colors.darkGray : Theme.colors.gray}
          value={props.value || null}
          onFocus={props.onFocus || null}
          onChange={props.onChange || null}
          onChangeText={props.onChangeText || null}
          style={style.input} 
        />
        {props.error ? <Text style={style.error}>{props.errorMessage}</Text> : null }
      </View>
    </View>)
}

class ApplyForm extends React.PureComponent {

  constructor(props) {
    super(props)
    this.cardnumber = ""
  }

  state = {
    loading: false,
    card: null,
    datepicker: false,
    focus: false,
    activeInput: null,
    agree: false,
    errors: null,
    processed: false,
    fname: null,
    lname: null,
    email: null,
    birthdate: "",
    number: null,
    valid: false,
    validEmail: true,
    validPhone: true,
  }

  componentDidMount() {
    this.setState({ card: this.props.route?.params || {} })
  }

  componentWillUnmount() {

  }

  setCardNumber = () => {
    this.setState({ valid: this.cardnumber.length == 15 ? true : false })
  }

  onAgree = () => {
    this.setState({ agree: this.state.agree == false ? true : false, valid: !this.state.agree })
  }

  validateEmail = () => {
    let regEx = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/
    return regEx.test(this.state.email)
  }

  validateNumber = () => {
    return this.state.number != null ? this.state.number.length > 11 : false
  }

  validatemobile = async () => {
    let num = this.state.number.substr(1, this.state.number.length-1)
    let validation = await MobileValidation(num)
    if(validation.status == 0){
      Alert.alert("Information", '\n' + validation.message);
      this.setState({ errors:{mobile: [validation.message]}, loading: false })
    } else {
      this.activateCard(success => {
        this.processActivatedCard(success)
      }, err => {
        Alert.alert("Information", `\n${err.message}`);
      })
    }
  }

  activateCard = async (successCallback, errorCallback) => {
    this.setState({ loading: true })
    let uuid = await DB.get("deviceUUID")
    let body = {
      birthdate: Theme.formatter.DT4API(this.state.birthdate || ""),
      cardtype_uuid: this.state.card.card_uuid,
      deviceUUID: uuid,
      email: this.state.email,
      firstname: this.state.fname,
      pin: this.state.card.pin,
      card_number: this.state.card.card_number,
      lastname: this.state.lname,
      mobile: Theme.formatter.PMBL(this.state.number.substr(1, this.state.number.length-1) || "")
    }

    await REQUEST("activateCard", "post", {}, {}, body, async (res) => {
      successCallback(res)
    }, function(error){
      errorCallback(error)
    }, "Card", "Activate")
  }

  stripString = (regex, regexReplace ,string, replaceString) => {
    let validMobileNumber = regex.test(string);
    if(!validMobileNumber) {
      return null
    }
    return string.replace(regexReplace, replaceString)
  }

  processActivatedCard = (success) => {
    if(success.status == 1){
        this.setState({ errors: null, processed: true, loading: false })
        this.props.navigation.navigate("LoginSendOTP", {
          lcard_uuid: success.data.lcard_uuid,
          mobile_number: this.state.number.substr(1, this.state.number.length-1),
          card_number: this.state.card.card_number,
          transactionType: this.props.route.params?.transactionType
        })
    } else if(success.status == 0 && Object.keys(success.data).length == 0) {
      this.setState({ errors: null, loading: false })
    }else{
      this.setState({ errors: success.data, loading: false })
    }
  }

  onSubmit = () => {
    this.setState({ loading: true });
    const bday = Theme.platform === "android" ? dateFormaterForAndroid(this.state.birthdate) : this.state.birthdate;
    
    if(this.state.valid){
      let errs = {}
      let bdayElapsed = moment(bday).fromNow(true).split(" ");
      if(!this.state.fname) errs = Object.assign({"firstname": ["The firstname field is required."]}, errs)
      if(!this.state.lname) errs = Object.assign({"lastname": ["The lastname field is required."]}, errs)
      if(!this.state.birthdate) errs = Object.assign({"birthdate": ["The birthdate field is required."]}, errs)
      if(bdayElapsed[1] != 'years' || bdayElapsed[1] == 'years' && bdayElapsed[0] < 18) errs = Object.assign({"birthdate": ["You must be at least 18 years old to join the Loyalty Program"]}, errs)
      if(!this.state.number) errs = Object.assign({"mobile": ["The mobile field is required."]}, errs)
      if(!this.state.email) errs = Object.assign({"email": ["The email field is required."]}, errs)
      if(this.state.number.length < 13) errs = Object.assign({"mobile": ["Please enter your 10-digit Mobile Phone Number"]}, errs)
      if(!this.validateEmail()) errs = Object.assign({"email": ["The email address is invalid"]}, errs)

      this.setState({ errors: errs })
      if(Object.keys(errs).length > 0) {
        this.setState({ loading: false });
        return false
      } else { 
        this.validatemobile()
      }
    }
  }

  onChangeTextValueFirstname = (text) => {
    if (/^[a-zA-Z ]+$/.test(text) || text === "") {
      this.setState({ fname: text })
    }
  }

  onChangeTextValueLastname = (text) => {
    if (/^[a-zA-Z ]+$/.test(text) || text === "") {
      this.setState({ lname: text })
    }
  }

  notEmpty = () => {
    const { fname, lname, email, birthdate, number } = this.state;

    if(fname && lname && email && birthdate && number) return true;
    return false;
  }

  showContent = () => {
    return (
      <ScrollView>
        <View style={{flex: 1}}> 
          <View style={{flex: 1, alignItems: 'center'}}>
            <Text style={{alignSelf: 'center', fontFamily: 'Arial', fontWeight: 'bold', fontSize: 25, padding: 15, marginTop: 25, color: this.props.app_theme?.theme. dark ? this.props.app_theme?.theme.colors.text : Theme.colors.textPrimary}}>Enter Your Details</Text>
            <Text style={{alignSelf: 'center', textAlign: 'center', width: '90%', marginTop: 0, padding: 15, color: this.props.app_theme?.theme.dark ? this.props.app_theme?.theme.colors.text : Theme.colors.textPrimary, fontFamily: 'Arial', fontSize: 16}}>
              Fill out the remaining forms and you're good to go!
            </Text>
            
            <CustomInput 
              title="First Name"
              value={this.state.fname}
              index={1}
              current={this.state.activeInput}
              keyboardType={'ascii-capable'}
              textColor={this.props.app_theme?.theme.colors.text}
              isDarkMode={this.props.app_theme?.theme.dark}
              focus={this.state.focus}
              error={this.state.errors && this.state.errors.firstname ? this.state.errors.firstname : false}
              errorMessage={this.state.errors && this.state.errors.firstname ? this.state.errors.firstname[0] : ""}
              onFocus={() => {
                this.setState({ activeInput: 1, focus: true })
              }}
              onChangeText={this.onChangeTextValueFirstname}
            />
            <CustomInput
              top={50} 
              title="Last Name"
              keyboardType={'ascii-capable'}
              value={this.state.lname}
              index={2}
              current={this.state.activeInput}
              textColor={this.props.app_theme?.theme.colors.text}
              isDarkMode={this.props.app_theme?.theme.dark}
              focus={this.state.focus}
              error={this.state.errors && this.state.errors.lastname ? this.state.errors.lastname : false}
              errorMessage={this.state.errors && this.state.errors.lastname ? this.state.errors.lastname[0] : ""}
              onFocus={() => {
                this.setState({ activeInput: 2, focus: true })
              }}
              onChangeText={this.onChangeTextValueLastname}
            />
            <CustomInput
              top={50} 
              title="Email Address"
              value={this.state.email}
              index={3}
              current={this.state.activeInput}
              keyboardType={'ascii-capable'}
              textColor={this.props.app_theme?.theme.colors.text}
              isDarkMode={this.props.app_theme?.theme.dark}
              focus={this.state.focus}
              error={this.state.errors && this.state.errors.email ? this.state.errors.email : false}
              errorMessage={this.state.errors && this.state.errors.email ? this.state.errors.email[0] : ""}
              onFocus={() => {
                this.setState({ activeInput: 3, focus: true })
              }}
              onChangeText={(val) => {
                this.setState({ email: val })
              }}
            />
  
            <View style={{flexDirection: 'row', width: '80%', marginTop: 35, alignItems: 'center'}}> 
              <View style={{flex: 1}}>
                {this.state.activeInput >= 4 ? <Text style={{fontSize: 12, color: this.state.activeInput == 4 && this.state.focus ? Theme.colors.accent : Theme.colors.darkGray, marginTop: -25, marginBottom: 15}}>Birthday</Text> : null}
                <TouchableOpacity 
                  onPress={() => {
                    this.setState({ datepicker: true, activeInput: 4 })
                  }} 
                  style={{}}>
                  <View style={{paddingTop: 15, paddingBottom: 5,borderColor: this.state.errors && this.state.errors.birthdate ? Theme.colors.primary : 'gray', borderBottomWidth: this.state.errors && this.state.errors.birthdate ? 1.5 : 1}}>
                    <Text style={{fontSize: 17, fontFamily: 'Arial', color: (this.state.birthdate && this.props.app_theme?.theme.dark) ? this.props.app_theme?.theme.colors.text : this.state.birthdate ? Theme.colors.textPrimary : Theme.colors.darkGray}}>{this.state.birthdate || "Birthday"}</Text>
                  </View>
                </TouchableOpacity>
                {this.state.errors && this.state.errors.birthdate ? 
                <Text style={{fontSize: 12, color: Theme.colors.primary, marginTop: 5, marginBottom: 15, width: '90%'}}>
                  {this.state.errors?.birthdate[0]}
                </Text> : null}
              </View>
            </View>
  
            <CustomInput
              top={50} 
              index={5}
              current={this.state.activeInput}
              focus={this.state.focus}
              title="Mobile Number"
              value={this.state.number && this.state.number.length <= 2 ? '+63' : this.state.number}
              keyboardType="numeric"
              textColor={this.props.app_theme?.theme.colors.text}
              isDarkMode={this.props.app_theme?.theme.dark}
              maxlength={13}
              error={this.state.errors && this.state.errors.mobile ? this.state.errors.mobile : false}
              errorMessage={this.state.errors && this.state.errors.mobile ? this.state.errors.mobile[0] : ""}
              onFocus={() => {
                this.setState({ activeInput: 5, focus: true, errors: null })
                if(this.state.number == null) this.setState({ number: "+63" })
              }}
              onChangeText={(val) => {
                if(!val.startsWith("+63")) {
                  return this.setState({ number: "+63" })
                }

                
                this.setState({ number: val, errors: null }); 

                if(this.state.agree){
                  if(val.length < 13) this.setState({ agree: false })
                  else if(val.length == 13 && this.notEmpty()) this.setState({ agree: true })
                }
              }}
            />  
            
            <View style={{flexDirection: 'row', width: '80%', marginTop: 15, alignItems: 'center'}}> 
              <TouchableOpacity disabled={!this.notEmpty()} onPress={() => this.state.fname && this.state.lname && this.state.birthdate && this.state.email && this.state.number ? this.onAgree() : null} style={{flex: 0, paddingTop: 15}}>
                {!this.state.agree ? <Icon.Feather color={this.props.app_theme?.theme.colors.text} name="square" size={20} /> : <Icon.AntDesign name="checksquare" color={Theme.colors.accent} size={20} />}
              </TouchableOpacity>
              <View style={{flex: 1, paddingTop: 10, paddingHorizontal: 10}}>
                <View style={{flexDirection: 'row', paddingTop: 5, alignItems: 'center'}}>
                  <Text style={{ color: this.props.app_theme?.theme.dark ? this.props.app_theme?.theme.colors.text : Theme.colors.textPrimary}}>I agree to </Text>
                  <TouchableOpacity style={{ paddingVertical: 10 }} onPress={() => this.props.navigation.navigate("TermsConditions", {screen: 'back'})}>
                    <Text style={{color: Theme.colors.primary}}>Unioil's Data Privacy Policy.</Text>
                  </TouchableOpacity>
                </View>
              </View>
            </View>
            <View style={{alignItems: 'center', justifyContent: 'flex-end', padding: 20, marginTop: 20}}>
              <TouchableOpacity onPress={() => this.onSubmit()} disabled={!this.notEmpty() || !this.state.agree} style={{padding: 20, paddingTop: 15, width: Theme.screen.w - 60, paddingBottom: 15, borderRadius: 10, backgroundColor: this.notEmpty() && this.state.agree ? Theme.colors.primary : this.props.app_theme?.theme.dark ? this.props.app_theme?.theme.colors.border : Theme.colors.primary + "15"}}>
                <Text style={{fontSize: 16, fontFamily: 'Arial', textAlign: 'center', color: '#fff'}}>Submit</Text>
              </TouchableOpacity>
            </View>
          </View>        
        </View>
      </ScrollView>
    )
  }

  render() {
    return (
      <CustomSafeArea>
        <Elements.loader visible={this.state.loading} />
        <Elements.CustomDatePicker 
          visible={this.state.datepicker}
          date={this.state.birthdate && new Date(this.state.birthdate)} 
          textColor={this.props.app_theme?.theme.colors.text}
          isDarkMode={this.props.app_theme?.theme.dark}
          modalBackgroundColor={this.props.app_theme?.theme.colors.border}
          onConfirm={(selectedDate) => {
            this.setState({ birthdate: selectedDate ? moment(selectedDate).format("MMMM DD, YYYY") : birthdate != null ? birthdate : null, datepicker: false, agree: false, valid: false })
          }}
          onCancel={() => this.setState({ datepicker: false })}
        />
        <CustomHeader title="" menu={false} back={true} onBackPress={() => this.props.navigation.goBack()} navigation={this.props.navigation} />

        { Theme.platform === "android" ? 
          this.showContent()
          :
          <KeyboardAvoidingView 
            style={{flex: 1}}
            behavior="padding"
            keyboardVerticalOffset={Theme.platform === 'ios' ? 50 : 70}
          >
            {this.showContent()}
          </KeyboardAvoidingView>}
      </CustomSafeArea>
    );
  }
}

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

export default connect(mapStateToProps, null)(ApplyForm);