import Head from 'next/head';
import Link from 'next/link';
import {useRouter} from 'next/router';
import {CalendarIcon, ClockIcon, ExclamationIcon, LocationMarkerIcon} from '@heroicons/react/solid';
import prisma from '../../lib/prisma';
import {collectPageParameters, telemetryEventTypes, useTelemetry} from "../../lib/telemetry";
import {useEffect, useState} from "react";
import dayjs from 'dayjs';
import utc from 'dayjs/plugin/utc';
import timezone from 'dayjs/plugin/timezone';
import 'react-phone-number-input/style.css';
import PhoneInput from 'react-phone-number-input';
import {LocationType} from '../../lib/location';
import Avatar from '../../components/Avatar';
import Button from '../../components/ui/Button';
import {EventTypeCustomInputType} from "../../lib/eventTypeInput";

dayjs.extend(utc);
dayjs.extend(timezone);

export default function Book(props) {
    const router = useRouter();
    const { date, user, rescheduleUid } = router.query;

    const [ is24h, setIs24h ] = useState(false);
    const [ preferredTimeZone, setPreferredTimeZone ] = useState('');
    const [ loading, setLoading ] = useState(false);
    const [ error, setError ] = useState(false);

    const locations = props.eventType.locations || [];

    const [ selectedLocation, setSelectedLocation ] = useState<LocationType>(locations.length === 1 ? locations[0].type : '');
    const telemetry = useTelemetry();
    useEffect(() => {

        setPreferredTimeZone(localStorage.getItem('timeOption.preferredTimeZone') || dayjs.tz.guess());
        setIs24h(!!localStorage.getItem('timeOption.is24hClock'));

        telemetry.withJitsu(jitsu => jitsu.track(telemetryEventTypes.timeSelected, collectPageParameters()));
    });

    const locationInfo = (type: LocationType) => locations.find(
        (location) => location.type === type
    );

    // TODO: Move to translations
    const locationLabels = {
        [LocationType.InPerson]: 'In-person meeting',
        [LocationType.Phone]: 'Phone call',
    };

    const bookingHandler = event => {
        const book = async () => {
            setLoading(true);
            setError(false);
            let notes = "";
            if (props.eventType.customInputs) {
                notes = props.eventType.customInputs.map(input => {
                    const data = event.target["custom_" + input.id];
                    if (!!data) {
                        if (input.type === EventTypeCustomInputType.Bool) {
                            return input.label + "\n" + (data.value ? "Yes" : "No")
                        } else {
                            return input.label + "\n" + data.value
                        }
                    }
                }).join("\n\n")
            }
            if (!!notes && !!event.target.notes.value) {
                notes += "\n\nAdditional notes:\n" + event.target.notes.value;
            } else {
                notes += event.target.notes.value;
            }

            let payload = {
                start: dayjs(date).format(),
                end: dayjs(date).add(props.eventType.length, 'minute').format(),
                name: event.target.name.value,
                email: event.target.email.value,
                notes: notes,
                timeZone: preferredTimeZone,
                eventTypeId: props.eventType.id,
                rescheduleUid: rescheduleUid
            };

            if (selectedLocation) {
                payload['location'] = selectedLocation === LocationType.Phone ? event.target.phone.value : locationInfo(selectedLocation).address;
            }

            telemetry.withJitsu(jitsu => jitsu.track(telemetryEventTypes.bookingConfirmed, collectPageParameters()));
            const res = await fetch(
              '/api/book/' + user,
              {
                  body: JSON.stringify(payload),
                  headers: {
                      'Content-Type': 'application/json'
                  },
                  method: 'POST'
              }
            );

            if (res.ok) {
                let successUrl = `/success?date=${date}&type=${props.eventType.id}&user=${props.user.username}&reschedule=${!!rescheduleUid}&name=${payload.name}`;
                if (payload['location']) {
                    successUrl += "&location=" + encodeURIComponent(payload['location']);
                }

                await router.push(successUrl);
            } else {
                setLoading(false);
                setError(true);
            }
        }

        event.preventDefault();
        book();
    }

    return (
        <div>
            <Head>
                <title>{rescheduleUid ? 'Reschedule' : 'Confirm'} your {props.eventType.title} with {props.user.name || props.user.username} | Calendso</title>
                <link rel="icon" href="/favicon.ico" />
            </Head>

            <main className="max-w-3xl mx-auto my-24">
                <div className="bg-white overflow-hidden shadow rounded-lg">
                    <div className="sm:flex px-4 py-5 sm:p-6">
                        <div className="sm:w-1/2 sm:border-r">
                            <Avatar user={props.user} className="w-16 h-16 rounded-full mb-4" />
                            <h2 className="font-medium text-gray-500">{props.user.name}</h2>
                            <h1 className="text-3xl font-semibold text-gray-800 mb-4">{props.eventType.title}</h1>
                            <p className="text-gray-500 mb-2">
                                <ClockIcon className="inline-block w-4 h-4 mr-1 -mt-1" />
                                {props.eventType.length} minutes
                            </p>
                            {selectedLocation === LocationType.InPerson && <p className="text-gray-500 mb-2">
                                <LocationMarkerIcon className="inline-block w-4 h-4 mr-1 -mt-1" />
                                {locationInfo(selectedLocation).address}
                            </p>}
                            <p className="text-blue-600 mb-4">
                                <CalendarIcon className="inline-block w-4 h-4 mr-1 -mt-1" />
                                {preferredTimeZone && dayjs(date).tz(preferredTimeZone).format( (is24h ? "H:mm" : "h:mma") + ", dddd DD MMMM YYYY")}
                            </p>
                            <p className="text-gray-600">{props.eventType.description}</p>
                        </div>
                        <div className="sm:w-1/2 pl-8 pr-4">
                            <form onSubmit={bookingHandler}>
                                <div className="mb-4">
                                    <label htmlFor="name" className="block text-sm font-medium text-gray-700">Your name</label>
                                    <div className="mt-1">
                                        <input type="text" name="name" id="name" required className="shadow-sm focus:ring-blue-500 focus:border-blue-500 block w-full sm:text-sm border-gray-300 rounded-md" placeholder="John Doe" defaultValue={props.booking ? props.booking.attendees[0].name : ''} />
                                    </div>
                                </div>
                                <div className="mb-4">
                                    <label htmlFor="email" className="block text-sm font-medium text-gray-700">Email address</label>
                                    <div className="mt-1">
                                        <input type="email" name="email" id="email" required className="shadow-sm focus:ring-blue-500 focus:border-blue-500 block w-full sm:text-sm border-gray-300 rounded-md" placeholder="you@example.com" defaultValue={props.booking ? props.booking.attendees[0].email : ''} />
                                    </div>
                                </div>
                                {locations.length > 1 && (
                                    <div className="mb-4">
                                        <span className="block text-sm font-medium text-gray-700">Location</span>
                                        {locations.map( (location) => (
                                            <label key={location.type} className="block">
                                                <input type="radio" required onChange={(e) => setSelectedLocation(e.target.value)} className="location" name="location" value={location.type} checked={selectedLocation === location.type} />
                                                <span className="text-sm ml-2">{locationLabels[location.type]}</span>
                                            </label>
                                        ))}
                                    </div>
                                )}
                                {selectedLocation === LocationType.Phone && (<div className="mb-4">
                                   <label htmlFor="phone" className="block text-sm font-medium text-gray-700">Phone Number</label>
                                   <div className="mt-1">
                                       <PhoneInput name="phone" placeholder="Enter phone number" id="phone" required className="shadow-sm focus:ring-blue-500 focus:border-blue-500 block w-full sm:text-sm border-gray-300 rounded-md" onChange={() => {}} />
                                   </div>
                                </div>)}
                                {props.eventType.customInputs && props.eventType.customInputs.sort((a,b) => a.id - b.id).map(input => (
                                  <div className="mb-4">
                                      {input.type !== EventTypeCustomInputType.Bool &&
                                      <label htmlFor={input.label} className="block text-sm font-medium text-gray-700 mb-1">{input.label}</label>}
                                      {input.type === EventTypeCustomInputType.TextLong &&
                                      <textarea name={"custom_" + input.id} id={"custom_" + input.id}
                                                required={input.required}
                                                rows={3}
                                                className="shadow-sm focus:ring-blue-500 focus:border-blue-500 block w-full sm:text-sm border-gray-300 rounded-md"
                                                placeholder=""/>}
                                      {input.type === EventTypeCustomInputType.Text &&
                                      <input type="text" name={"custom_" + input.id} id={"custom_" + input.id}
                                             required={input.required}
                                             className="shadow-sm focus:ring-blue-500 focus:border-blue-500 block w-full sm:text-sm border-gray-300 rounded-md"
                                             placeholder=""/>}
                                      {input.type === EventTypeCustomInputType.Number &&
                                      <input type="number" name={"custom_" + input.id} id={"custom_" + input.id}
                                             required={input.required}
                                             className="shadow-sm focus:ring-blue-500 focus:border-blue-500 block w-full sm:text-sm border-gray-300 rounded-md"
                                             placeholder=""/>}
                                      {input.type === EventTypeCustomInputType.Bool &&
                                      <div className="flex items-center h-5">
                                          <input type="checkbox" name={"custom_" + input.id} id={"custom_" + input.id}
                                             className="focus:ring-blue-500 h-4 w-4 text-blue-600 border-gray-300 rounded mr-2"
                                             placeholder=""/>
                                          <label htmlFor={input.label} className="block text-sm font-medium text-gray-700">{input.label}</label>
                                      </div>}
                                  </div>
                                ))}
                                <div className="mb-4">
                                    <label htmlFor="notes" className="block text-sm font-medium text-gray-700 mb-1">Additional notes</label>
                                    <textarea name="notes" id="notes" rows={3}  className="shadow-sm focus:ring-blue-500 focus:border-blue-500 block w-full sm:text-sm border-gray-300 rounded-md" placeholder="Please share anything that will help prepare for our meeting." defaultValue={props.booking ? props.booking.description : ''}/>
                                </div>
                                <div className="flex items-start">
                                    <Button type="submit" loading={loading} className="btn btn-primary">{rescheduleUid ? 'Reschedule' : 'Confirm'}</Button>
                                    <Link href={"/" + props.user.username + "/" + props.eventType.slug + (rescheduleUid ? "?rescheduleUid=" + rescheduleUid : "")}>
                                        <a className="ml-2 btn btn-white">Cancel</a>
                                    </Link>
                                </div>
                            </form>
                            {error && <div className="bg-yellow-50 border-l-4 border-yellow-400 p-4 mt-2">
                                <div className="flex">
                                    <div className="flex-shrink-0">
                                        <ExclamationIcon className="h-5 w-5 text-yellow-400" aria-hidden="true" />
                                    </div>
                                    <div className="ml-3">
                                        <p className="text-sm text-yellow-700">
                                            Could not {rescheduleUid ? 'reschedule' : 'book'} the meeting. Please try again or{' '}
                                            <a href={"mailto:" + props.user.email} className="font-medium underline text-yellow-700 hover:text-yellow-600">
                                                Contact {props.user.name} via e-mail
                                            </a>
                                        </p>
                                    </div>
                                </div>
                            </div>}
                        </div>
                    </div>
                </div>
            </main>
        </div>
    )
}

export async function getServerSideProps(context) {
    const user = await prisma.user.findFirst({
        where: {
          username: context.query.user,
        },
        select: {
            username: true,
            name: true,
            email:true,
            bio: true,
            avatar: true,
            eventTypes: true
        }
    });

    const eventType = await prisma.eventType.findUnique({
        where: {
          id: parseInt(context.query.type),
        },
        select: {
            id: true,
            title: true,
            slug: true,
            description: true,
            length: true,
            locations: true,
            customInputs: true,
        }
    });

    let booking = null;

    if(context.query.rescheduleUid) {
        booking = await prisma.booking.findFirst({
            where: {
                uid: context.query.rescheduleUid
            },
            select: {
                description: true,
                attendees: {
                    select: {
                        email: true,
                        name: true
                    }
                }
            }
        });
    }

    return {
        props: {
            user,
            eventType,
            booking
        },
    }
}