import { GetServerSideProps } from "next";
import Head from "next/head";
import { useEffect, useRef, useState } from "react";
import prisma, { whereAndSelect } from "@lib/prisma";
import Modal from "../../components/Modal";
import Shell from "../../components/Shell";
import SettingsShell from "../../components/Settings";
import Avatar from "../../components/Avatar";
import { getSession } from "next-auth/client";
import Select from "react-select";
import TimezoneSelect from "react-timezone-select";
import { UsernameInput } from "../../components/ui/UsernameInput";
import ErrorAlert from "../../components/ui/alerts/Error";
import ImageUploader from "../../components/ImageUploader";

const themeOptions = [
  { value: "light", label: "Light" },
  { value: "dark", label: "Dark" },
];

export default function Settings(props) {
  const [successModalOpen, setSuccessModalOpen] = useState(false);
  const usernameRef = useRef<HTMLInputElement>();
  const nameRef = useRef<HTMLInputElement>();
  const descriptionRef = useRef<HTMLTextAreaElement>();
  const avatarRef = useRef<HTMLInputElement>();
  const hideBrandingRef = useRef<HTMLInputElement>();
  const [selectedTheme, setSelectedTheme] = useState({ value: props.user.theme });
  const [selectedTimeZone, setSelectedTimeZone] = useState({ value: props.user.timeZone });
  const [selectedWeekStartDay, setSelectedWeekStartDay] = useState({ value: props.user.weekStart });
  const [imageSrc, setImageSrc] = useState<string>('');  

  const [hasErrors, setHasErrors] = useState(false);
  const [errorMessage, setErrorMessage] = useState("");

  useEffect(() => {
    setSelectedTheme(
      props.user.theme ? themeOptions.find((theme) => theme.value === props.user.theme) : null
    );
    setSelectedWeekStartDay({ value: props.user.weekStart, label: props.user.weekStart });
  }, []);

  const closeSuccessModal = () => {
    setSuccessModalOpen(false);
  };

  const handleAvatarChange = (newAvatar) => {
    avatarRef.current.value = newAvatar;
    var nativeInputValueSetter = Object.getOwnPropertyDescriptor(window.HTMLInputElement.prototype, "value").set;
    nativeInputValueSetter.call(avatarRef.current, newAvatar);      
    var ev2 = new Event('input', { bubbles: true});
    avatarRef.current.dispatchEvent(ev2);
    updateProfileHandler(ev2);
    setImageSrc(newAvatar);  
  }

  const handleError = async (resp) => {
    if (!resp.ok) {
      const error = await resp.json();
      throw new Error(error.message);
    }
  };

  async function updateProfileHandler(event) {
    event.preventDefault();

    const enteredUsername = usernameRef.current.value.toLowerCase();
    const enteredName = nameRef.current.value;
    const enteredDescription = descriptionRef.current.value;
    const enteredAvatar = avatarRef.current.value;
    const enteredTimeZone = selectedTimeZone.value;
    const enteredWeekStartDay = selectedWeekStartDay.value;
    const enteredHideBranding = hideBrandingRef.current.checked;

    // TODO: Add validation

    await fetch("/api/user/profile", {
      method: "PATCH",
      body: JSON.stringify({
        username: enteredUsername,
        name: enteredName,
        description: enteredDescription,
        avatar: enteredAvatar,
        timeZone: enteredTimeZone,
        weekStart: enteredWeekStartDay,
        hideBranding: enteredHideBranding,
        theme: selectedTheme ? selectedTheme.value : null,
      }),
      headers: {
        "Content-Type": "application/json",
      },
    })
      .then(handleError)
      .then(() => {
        setSuccessModalOpen(true);
        setHasErrors(false); // dismiss any open errors
      })
      .catch((err) => {
        setHasErrors(true);
        setErrorMessage(err.message);
      });
  }

  return (
    <Shell heading="Profile" subtitle="Edit your profile information, which shows on your scheduling link.">
      <Head>
        <title>Profile | Calendso</title>
        <link rel="icon" href="/favicon.ico" />
      </Head>
      <SettingsShell>
        <form className="divide-y divide-gray-200 lg:col-span-9" onSubmit={updateProfileHandler}>
          {hasErrors && <ErrorAlert message={errorMessage} />}
          <div className="py-6 lg:pb-8">
            <div className="flex flex-col lg:flex-row">
              <div className="flex-grow space-y-6">
                <div className="block sm:flex">
                  <div className="w-full sm:w-1/2 sm:mr-2 mb-6">
                    <UsernameInput ref={usernameRef} defaultValue={props.user.username} />
                  </div>
                  <div className="w-full sm:w-1/2 sm:ml-2">
                    <label htmlFor="name" className="block text-sm font-medium text-gray-700">
                      Full name
                    </label>
                    <input
                      ref={nameRef}
                      type="text"
                      name="name"
                      id="name"
                      autoComplete="given-name"
                      placeholder="Your name"
                      required
                      className="mt-1 block w-full border border-gray-300 rounded-sm shadow-sm py-2 px-3 focus:outline-none focus:ring-neutral-500 focus:border-neutral-500 sm:text-sm"
                      defaultValue={props.user.name}
                    />
                  </div>
                </div>

                <div>
                  <label htmlFor="about" className="block text-sm font-medium text-gray-700">
                    About
                  </label>
                  <div className="mt-1">
                    <textarea
                      ref={descriptionRef}
                      id="about"
                      name="about"
                      placeholder="A little something about yourself."
                      rows={3}
                      defaultValue={props.user.bio}
                      className="shadow-sm focus:ring-neutral-500 focus:border-neutral-500 mt-1 block w-full sm:text-sm border-gray-300 rounded-sm"></textarea>
                  </div>
                </div>
                <div>
                  <div className="mt-1 flex">
                      <Avatar
                        user={props.user}
                        className="relative rounded-full w-10 h-10"
                        fallback={<div className="relative bg-neutral-900 rounded-full w-10 h-10"></div>}
                        imageSrc={imageSrc}
                      />
                      <input
                        ref={avatarRef}
                        type="hidden"
                        name="avatar"
                        id="avatar"
                        placeholder="URL"
                        className="mt-1 block w-full border border-gray-300 rounded-sm shadow-sm py-2 px-3 focus:outline-none focus:ring-neutral-500 focus:border-neutral-500 sm:text-sm"
                        defaultValue={props.user.avatar}
                      />                    
                      <ImageUploader 
                        target="avatar"
                        id="avatar-upload"
                        buttonMsg="Change avatar"
                        handleAvatarChange={handleAvatarChange}
                        imageRef={imageSrc ? imageSrc : props.user.avatar}
                      />
                  </div>
                  <hr className="mt-6" />
                </div>                
                <div>
                  <label htmlFor="timeZone" className="block text-sm font-medium text-gray-700">
                    Timezone
                  </label>
                  <div className="mt-1">
                    <TimezoneSelect
                      id="timeZone"
                      value={selectedTimeZone}
                      onChange={setSelectedTimeZone}
                      classNamePrefix="react-select"
                      className="react-select-container border border-gray-300 rounded-sm shadow-sm focus:ring-neutral-500 focus:border-neutral-500 mt-1 block w-full sm:text-sm"
                    />
                  </div>
                </div>
                <div>
                  <label htmlFor="weekStart" className="block text-sm font-medium text-gray-700">
                    First Day of Week
                  </label>
                  <div className="mt-1">
                    <Select
                      id="weekStart"
                      value={selectedWeekStartDay}
                      onChange={setSelectedWeekStartDay}
                      classNamePrefix="react-select"
                      className="react-select-container border border-gray-300 rounded-sm shadow-sm focus:ring-neutral-500 focus:border-neutral-500 mt-1 block w-full sm:text-sm"
                      options={[
                        { value: "Sunday", label: "Sunday" },
                        { value: "Monday", label: "Monday" },
                      ]}
                    />
                  </div>
                </div>
                <div>
                  <label htmlFor="theme" className="block text-sm font-medium text-gray-700">
                    Single Theme
                  </label>
                  <div className="my-1">
                    <Select
                      id="theme"
                      isDisabled={!selectedTheme}
                      defaultValue={selectedTheme || themeOptions[0]}
                      value={selectedTheme || themeOptions[0]}
                      onChange={setSelectedTheme}
                      className="shadow-sm focus:ring-neutral-500 focus:border-neutral-500 mt-1 block w-full sm:text-sm border-gray-300 rounded-sm"
                      options={themeOptions}
                    />
                  </div>
                  <div className="mt-8 relative flex items-start">
                    <div className="flex items-center h-5">
                      <input
                        id="theme-adjust-os"
                        name="theme-adjust-os"
                        type="checkbox"
                        onChange={(e) => setSelectedTheme(e.target.checked ? null : themeOptions[0])}
                        defaultChecked={!selectedTheme}
                        className="focus:ring-neutral-500 h-4 w-4 text-neutral-900 border-gray-300 rounded-sm"
                      />
                    </div>
                    <div className="ml-3 text-sm">
                      <label htmlFor="theme-adjust-os" className="font-medium text-gray-700">
                        Automatically adjust theme based on invitee preferences
                      </label>
                    </div>
                  </div>
                </div>
                <div>
                  <div className="relative flex items-start">
                    <div className="flex items-center h-5">
                      <input
                        id="hide-branding"
                        name="hide-branding"
                        type="checkbox"
                        ref={hideBrandingRef}
                        defaultChecked={props.user.hideBranding}
                        className="focus:ring-neutral-500 h-4 w-4 text-neutral-900 border-gray-300 rounded-sm"
                      />
                    </div>
                    <div className="ml-3 text-sm">
                      <label htmlFor="hide-branding" className="font-medium text-gray-700">
                        Disable Calendso branding
                      </label>
                      <p className="text-gray-500">Hide all Calendso branding from your public pages.</p>
                    </div>
                  </div>
                </div>
              </div>

              {/*<div className="mt-6 flex-grow lg:mt-0 lg:ml-6 lg:flex-grow-0 lg:flex-shrink-0">
                <p className="mb-2 text-sm font-medium text-gray-700" aria-hidden="true">
                  Photo
                </p>
                <div className="mt-1 lg:hidden">
                  <div className="flex items-center">
                    <div
                      className="flex-shrink-0 inline-block rounded-full overflow-hidden h-12 w-12"
                      aria-hidden="true">
                      <Avatar user={props.user} className="rounded-full h-full w-full" />
                    </div>
                  </div>
                </div>

                <div className="hidden relative rounded-full overflow-hidden lg:block">
                  <Avatar
                    user={props.user}
                    className="relative rounded-full w-40 h-40"
                    fallback={<div className="relative bg-neutral-900 rounded-full w-40 h-40"></div>}
                  />
                </div>
                <div className="mt-4">
                  <label htmlFor="avatar" className="block text-sm font-medium text-gray-700">
                    Avatar URL
                  </label>
                  <input
                    ref={avatarRef}
                    type="text"
                    name="avatar"
                    id="avatar"
                    placeholder="URL"
                    className="mt-1 block w-full border border-gray-300 rounded-sm shadow-sm py-2 px-3 focus:outline-none focus:ring-neutral-500 focus:border-neutral-500 sm:text-sm"
                    defaultValue={props.user.avatar}
                  />
                </div>
              </div>*/}
            </div>
            <hr className="mt-8" />
            <div className="py-4 flex justify-end">
              <button
                type="submit"
                className="ml-2 bg-neutral-900 border border-transparent rounded-sm shadow-sm py-2 px-4 inline-flex justify-center text-sm font-medium text-white hover:bg-neutral-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-neutral-500">
                Save
              </button>
            </div>
          </div>
        </form>
        <Modal
          heading="Profile updated successfully"
          description="Your user profile has been updated successfully."
          open={successModalOpen}
          handleClose={closeSuccessModal}
        />
      </SettingsShell>
    </Shell>
  );
}

export const getServerSideProps: GetServerSideProps = async (context) => {
  const session = await getSession(context);
  if (!session) {
    return { redirect: { permanent: false, destination: "/auth/login" } };
  }

  const user = await whereAndSelect(
    prisma.user.findFirst,
    {
      id: session.user.id,
    },
    ["id", "username", "name", "email", "bio", "avatar", "timeZone", "weekStart", "hideBranding", "theme"]
  );

  return {
    props: { user }, // will be passed to the page component as props
  };
};
