import { List } from 'immutable';
import React, { Component } from 'react';
import PropTypes from 'prop-types';
import { Button, Picker, ScrollView, Text, TextInput, View } from 'react-native';
import { Avatar } from 'react-native-elements';

import { getEmailAvailability, getNomAvailability } from '../../api/profile.js';

import EditNomDeBid from './EditNomDeBid.js';
import PhoneListInput from './PhoneInput/PhoneListInput.js';
import styles from './Profile.styles.js';

const STRINGS = {
    CANCEL: 'Cancel',
    NOM_HEADING: 'Nom de Bid',
    PASSWORD_HEADING: 'Password',
    PERSONAL_HEADING: 'A bit about you...',
    SAVE_PROFILE: 'Save profile',
};

export default class EditProfile extends Component {
    static get propTypes() {
        return {
            addresses: PropTypes.oneOfType([PropTypes.array, PropTypes.instanceOf(List)]),
            avatar: PropTypes.string,
            cancelEditAction: PropTypes.func.isRequired,
            email: PropTypes.string,
            firstName: PropTypes.string,
            initials: PropTypes.string,
            isGeneratedNomDeBid: PropTypes.bool,
            isRegsiteredAccount: PropTypes.bool,
            lastName: PropTypes.string,
            nomDeBid: PropTypes.string,
            phones: PropTypes.oneOfType([PropTypes.array, PropTypes.instanceOf(List)]),
            saveProfileAction: PropTypes.func.isRequired,
            saveProfileLabel: PropTypes.string,
            showPasswordEntry: PropTypes.bool,
        };
    }

    static get defaultProps() {
        return {
            addresses: new List(),
            avatar: null,
            email: null,
            firstName: null,
            initials: null,
            isGeneratedNomDeBid: false,
            isRegsiteredAccount: false,
            lastName: null,
            nomDeBid: null,
            phones: new List(),
            saveProfileLabel: STRINGS.SAVE_PROFILE,
            showPasswordEntry: false,
        };
    }

    constructor(props) {
        super(props);

        this.state = {
            addresses: this.props.addresses,
            avatar: this.props.avatar,
            email: this.props.email,
            firstName: this.props.firstName,
            lastName: this.props.lastName,
            invalidEmail: false,
            invalidNomDeBid: false,
            nomDeBid: this.props.nomDeBid,
            password: this.props.password,
            passwordsMismatch: false,
            phones: this.props.phones,
        };

        this.handleCancel = this.handleCancel.bind(this);
        this.handleSubmit = this.handleSubmit.bind(this);
    }

    _validateEmail() {
        getEmailAvailability(this.state.email)
            .then(({ available = false }) =>
                this.setState('invalidEmail', !available),
            );
    }

    _validateNomDeBid() {
        getNomAvailability(this.state.nomDeBid)
            .then(({ available = false }) =>
                this.setState('invalidNomDeBid', !available),
            );
    }

    _validatePasswordMatch(password) {
        this.setState({ passwordsMismatch: this.state.password !== password });
    }

    getProfileFromState() {
        return {
            addresses: this.state.addresses,
            avatar: this.state.avatar,
            email: this.state.email,
            firstName: this.state.firstName,
            lastName: this.state.lastName,
            nomDeBid: this.state.nomDeBid,
            password: this.state.password,
            phones: this.state.phones,
        };
    }

    handleCancel() {
        this.props.cancelEditAction();
    }

    handleSubmit() {
        if (!this.isFormComplete()) {
            console.error('Incomplete form... how did the button become enabled?');
            alert('Please complete all of the required fields. They have bold labels.');
            return;
        }

        this.props.saveProfileAction(this.getProfileFromState());
    }

    isFormComplete() {
        const { showPasswordEntry } = this.props;
        const { password } = this.state;

        return (
            !this.state.invalidEmail &&
            !this.state.invalidNomDeBid &&
            !!this.state.firstName &&
            !!this.state.lastName &&
            !!this.state.email &&
            !!this.state.nomDeBid &&
            !!this.state.phones.size &&
            ((showPasswordEntry && !!password) || !showPasswordEntry)
        );
    }

    render() {
        const { isGeneratedNomDeBid, isRegsiteredAccount, showPasswordEntry } = this.props;
        const { addresses, avatar, firstName, lastName, phones } = this.state;
        const addressesTitle = 'Addresses';
        const numbersTitle = 'Numbers';

        return (
            <ScrollView style={styles.profileFormWrap}>
                <View style={[styles.sectionWrap, styles.avatarWrap]}>
                    {avatar !== null ? (
                        <Avatar source={{ uri: this.state.avatar }} showEditButton />
                    ) : (
                        <Avatar title={this.props.initials} showEditButton />
                    )}
                </View>
                <View style={[styles.sectionWrap, styles.nameWrap]}>
                    <Text style={styles.groupHeading}>{STRINGS.PERSONAL_HEADING}</Text>
                    <TextInput
                        onChange={(text) => this.setState({ firstName: text })}
                        placeholder="first name"
                        style={[styles.textInput, styles.requiredInput]}
                        value={this.state.firstName}
                    />
                    <TextInput
                        onChange={(text) => this.setState({ lastName: text })}
                        placeholder="last name"
                        style={[styles.textInput, styles.requiredInput]}
                        value={this.state.lastName}
                    />
                </View>
                <View style={[styles.sectionWrap, styles.emailWrap, styles.requiredWrap]}>
                    <TextInput
                        keyboardType="email-address"
                        onChangeText={(text) => this.setState({ email: text })}
                        onEndEditing={(text) => this._validateEmail(text)}
                        placeholder="email address"
                        style={[styles.textInput, styles.requiredInput]}
                        value={this.state.email}
                    />
                </View>
                {showPasswordEntry && (
                    <View style={[styles.sectionWrap, styles.password, styles.requiredWrap]}>
                        <Text style={styles.groupHeading}>{STRINGS.PASSWORD_HEADING}</Text>
                        <TextInput
                            onChangeText={(text) => this.setState({ password: text })}
                            placeholder="password"
                            secureTextEntry
                            style={[styles.textInput, styles.requiredInput]}
                        />
                        <TextInput
                            onEndEditing={(text) => this._validatePasswordMatch(text)}
                            placeholder="re-enter password"
                            secureTextEntry
                            style={[styles.textInput, styles.requiredInput]}
                        />
                    </View>
                )}
                {(isGeneratedNomDeBid || !isRegsiteredAccount) && (
                    <View style={[styles.sectionWrap, styles.nomWrap, styles.requiredWrap]}>
                        <Text style={styles.groupHeading}>{STRINGS.NOM_HEADING}</Text>
                        <EditNomDeBid
                            isGeneratedNomDeBid={isGeneratedNomDeBid}
                            isStandalone
                            nomDeBid={this.state.nomDeBid}
                            updateNomDeBid={(nomDeBid) => this.setState({ nomDeBid })}
                        />
                    </View>
                )}
                <View style={[styles.sectionWrap, styles.phonesWrap]}>
                    <PhoneListInput
                        handleAdd={(phones) => this.setState({ phones })}
                        handleDelete={(phones) => this.setState({ phones })}
                        handleEdit={(phones) => this.setState({ phones })}
                        phones={phones}
                    />
                </View>
                <View style={[styles.sectionWrap, styles.addressesWrap]}>
                    <Text style={styles.groupHeading}>{addressesTitle}</Text>
                    {addresses !== null && addresses.size > 0 && (
                        /* LIST ADDRESSES */
                        <View />
                    )}
                    <Button title="Add address" onPress={() => false} />
                </View>
                <View style={styles.register}>
                    <Button title={this.props.saveProfileLabel} onPress={this.handleSubmit} />
                    <Button title={STRINGS.CANCEL} onPress={this.handleCancel} />
                </View>
            </ScrollView>
        );
    }
}