import React, { useEffect, useState, ReactElement } from "react";
import { observer } from "mobx-react";
import { Controller, useForm } from "react-hook-form";
import { ChevronDown, User2 } from "lucide-react";
import { Disclosure, Transition } from "@headlessui/react";
// services
// hooks
// layouts
// components
import type { IUser } from "@plane/types";
import { Button, CustomSelect, CustomSearchSelect, Input, TOAST_TYPE, setPromiseToast, setToast } from "@plane/ui";
import { DeactivateAccountModal } from "@/components/account";
import { LogoSpinner } from "@/components/common";
import { ImagePickerPopover, UserImageUploadModal, PageHead } from "@/components/core";
// ui
// icons
// components
import { SidebarHamburgerToggle } from "@/components/core/sidebar";
// constants
import { TIME_ZONES } from "@/constants/timezones";
import { USER_ROLES } from "@/constants/workspace";
// hooks
import { useAppTheme, useUser } from "@/hooks/store";
import { ProfileSettingsLayout } from "@/layouts/settings-layout";
// layouts
// lib types
import type { NextPageWithLayout } from "@/lib/types";
import { FileService } from "@/services/file.service";
// services
// types

const defaultValues: Partial<IUser> = {
  avatar: "",
  cover_image: "",
  first_name: "",
  last_name: "",
  display_name: "",
  email: "",
  role: "Product / Project Manager",
  user_timezone: "Asia/Kolkata",
};

const fileService = new FileService();

const ProfileSettingsPage: NextPageWithLayout = observer(() => {
  // states
  const [isLoading, setIsLoading] = useState(false);
  const [isRemoving, setIsRemoving] = useState(false);
  const [isImageUploadModalOpen, setIsImageUploadModalOpen] = useState(false);
  const [deactivateAccountModal, setDeactivateAccountModal] = useState(false);
  // form info
  const {
    handleSubmit,
    reset,
    watch,
    control,
    formState: { errors },
  } = useForm<IUser>({ defaultValues });
  // store hooks
  const { data: currentUser, updateCurrentUser } = useUser();
  const { toggleSidebar } = useAppTheme();

  useEffect(() => {
    reset({ ...defaultValues, ...currentUser });
  }, [currentUser, reset]);

  const onSubmit = async (formData: IUser) => {
    setIsLoading(true);
    const payload: Partial<IUser> = {
      first_name: formData.first_name,
      last_name: formData.last_name,
      avatar: formData.avatar,
      cover_image: formData.cover_image,
      role: formData.role,
      display_name: formData?.display_name,
      user_timezone: formData.user_timezone,
    };

    const updateCurrentUserDetail = updateCurrentUser(payload).finally(() => setIsLoading(false));
    setPromiseToast(updateCurrentUserDetail, {
      loading: "Updating...",
      success: {
        title: "Success!",
        message: () => `Profile updated successfully.`,
      },
      error: {
        title: "Error!",
        message: () => `There was some error in updating your profile. Please try again.`,
      },
    });
  };

  const handleDelete = (url: string | null | undefined, updateUser: boolean = false) => {
    if (!url) return;

    setIsRemoving(true);

    fileService.deleteUserFile(url).then(() => {
      if (updateUser)
        updateCurrentUser({ avatar: "" })
          .then(() => {
            setToast({
              type: TOAST_TYPE.SUCCESS,
              title: "Success!",
              message: "Profile picture deleted successfully.",
            });
            setIsRemoving(false);
          })
          .catch(() => {
            setToast({
              type: TOAST_TYPE.ERROR,
              title: "Error!",
              message: "There was some error in deleting your profile picture. Please try again.",
            });
          })
          .finally(() => setIsRemoving(false));
    });
  };

  const timeZoneOptions = TIME_ZONES.map((timeZone) => ({
    value: timeZone.value,
    query: timeZone.label + " " + timeZone.value,
    content: timeZone.label,
  }));

  if (!currentUser)
    return (
      <div className="grid h-full w-full place-items-center px-4 sm:px-0">
        <LogoSpinner />
      </div>
    );

  return (
    <>
      <PageHead title="Profile - General Settings" />
      <div className="flex h-full flex-col">
        <div className="block flex-shrink-0 border-b border-custom-border-200 p-4 md:hidden">
          <SidebarHamburgerToggle onClick={() => toggleSidebar()} />
        </div>
        <div className="overflow-hidden">
          <Controller
            control={control}
            name="avatar"
            render={({ field: { onChange, value } }) => (
              <UserImageUploadModal
                isOpen={isImageUploadModalOpen}
                onClose={() => setIsImageUploadModalOpen(false)}
                isRemoving={isRemoving}
                handleDelete={() => handleDelete(currentUser?.avatar, true)}
                onSuccess={(url) => {
                  onChange(url);
                  handleSubmit(onSubmit)();
                  setIsImageUploadModalOpen(false);
                }}
                value={value && value.trim() !== "" ? value : null}
              />
            )}
          />
          <DeactivateAccountModal isOpen={deactivateAccountModal} onClose={() => setDeactivateAccountModal(false)} />
          <div className="vertical-scrollbar scrollbar-md mx-auto flex h-full w-full flex-col space-y-10 overflow-y-auto px-4 md:px-8 pb-8 pt-10 md:pt-16 lg:w-3/5">
            <form onSubmit={handleSubmit(onSubmit)}>
              <div className="flex w-full flex-col gap-8">
                <div className="relative h-44 w-full">
                  <img
                    src={watch("cover_image") ?? "https://images.unsplash.com/photo-1506383796573-caf02b4a79ab"}
                    className="h-44 w-full rounded-lg object-cover"
                    alt={currentUser?.first_name ?? "Cover image"}
                  />
                  <div className="absolute -bottom-6 left-8 flex items-end justify-between">
                    <div className="flex gap-3">
                      <div className="flex h-16 w-16 items-center justify-center rounded-lg bg-custom-background-90">
                        <button type="button" onClick={() => setIsImageUploadModalOpen(true)}>
                          {!watch("avatar") || watch("avatar") === "" ? (
                            <div className="h-16 w-16 rounded-md bg-custom-background-80 p-2">
                              <User2 className="h-full w-full text-custom-text-200" />
                            </div>
                          ) : (
                            <div className="relative h-16 w-16 overflow-hidden">
                              <img
                                src={watch("avatar") || undefined}
                                className="absolute left-0 top-0 h-full w-full rounded-lg object-cover"
                                onClick={() => setIsImageUploadModalOpen(true)}
                                alt={currentUser?.display_name}
                                role="button"
                              />
                            </div>
                          )}
                        </button>
                      </div>
                    </div>
                  </div>

                  <div className="absolute bottom-3 right-3 flex">
                    <Controller
                      control={control}
                      name="cover_image"
                      render={({ field: { value, onChange } }) => (
                        <ImagePickerPopover
                          label={"Change cover"}
                          onChange={(imageUrl) => onChange(imageUrl)}
                          control={control}
                          value={value ?? "https://images.unsplash.com/photo-1506383796573-caf02b4a79ab"}
                          isProfileCover
                        />
                      )}
                    />
                  </div>
                </div>

                <div className="item-center mt-4 flex justify-between md:px-8">
                  <div className="flex flex-col">
                    <div className="item-center flex text-lg font-semibold text-custom-text-100">
                      <span>{`${watch("first_name")} ${watch("last_name")}`}</span>
                    </div>
                    <span className="text-sm tracking-tight">{watch("email")}</span>
                  </div>

                  {/* <Link href={`/profile/${currentUser.id}`}>
              <span className="flex item-center gap-1 text-sm text-custom-primary-100 underline font-medium">
                <ExternalLink className="h-4 w-4" />
                Activity Overview
              </span>
            </Link> */}
                </div>

                <div className="grid grid-cols-1 gap-6 md:px-8 lg:grid-cols-2 2xl:grid-cols-3">
                  <div className="flex flex-col gap-1">
                    <h4 className="text-sm">
                      First name<span className="text-red-500">*</span>
                    </h4>
                    <Controller
                      control={control}
                      name="first_name"
                      rules={{
                        required: "First name is required.",
                      }}
                      render={({ field: { value, onChange, ref } }) => (
                        <Input
                          id="first_name"
                          name="first_name"
                          type="text"
                          value={value}
                          onChange={onChange}
                          ref={ref}
                          hasError={Boolean(errors.first_name)}
                          placeholder="Enter your first name"
                          className={`w-full rounded-md ${errors.first_name ? "border-red-500" : ""}`}
                          maxLength={24}
                        />
                      )}
                    />
                    {errors.first_name && <span className="text-xs text-red-500">Please enter first name</span>}
                  </div>

                  <div className="flex flex-col gap-1">
                    <h4 className="text-sm">Last name</h4>

                    <Controller
                      control={control}
                      name="last_name"
                      render={({ field: { value, onChange, ref } }) => (
                        <Input
                          id="last_name"
                          name="last_name"
                          type="text"
                          value={value}
                          onChange={onChange}
                          ref={ref}
                          hasError={Boolean(errors.last_name)}
                          placeholder="Enter your last name"
                          className="w-full rounded-md"
                          maxLength={24}
                        />
                      )}
                    />
                  </div>

                  <div className="flex flex-col gap-1">
                    <h4 className="text-sm">
                      Email<span className="text-red-500">*</span>
                    </h4>
                    <Controller
                      control={control}
                      name="email"
                      rules={{
                        required: "Email is required.",
                      }}
                      render={({ field: { value, ref } }) => (
                        <Input
                          id="email"
                          name="email"
                          type="email"
                          value={value}
                          ref={ref}
                          hasError={Boolean(errors.email)}
                          placeholder="Enter your email"
                          className={`w-full cursor-not-allowed rounded-md !bg-custom-background-80 ${
                            errors.email ? "border-red-500" : ""
                          }`}
                          disabled
                        />
                      )}
                    />
                  </div>

                  <div className="flex flex-col gap-1">
                    <h4 className="text-sm">
                      Role<span className="text-red-500">*</span>
                    </h4>
                    <Controller
                      name="role"
                      control={control}
                      rules={{ required: "Role is required." }}
                      render={({ field: { value, onChange } }) => (
                        <CustomSelect
                          value={value}
                          onChange={onChange}
                          label={value ? value.toString() : "Select your role"}
                          buttonClassName={errors.role ? "border-red-500" : "border-none"}
                          className="rounded-md border-[0.5px] !border-custom-border-200"
                          optionsClassName="w-full"
                          input
                        >
                          {USER_ROLES.map((item) => (
                            <CustomSelect.Option key={item.value} value={item.value}>
                              {item.label}
                            </CustomSelect.Option>
                          ))}
                        </CustomSelect>
                      )}
                    />
                    {errors.role && <span className="text-xs text-red-500">Please select a role</span>}
                  </div>

                  <div className="flex flex-col gap-1">
                    <h4 className="text-sm">
                      Display name<span className="text-red-500">*</span>
                    </h4>
                    <Controller
                      control={control}
                      name="display_name"
                      rules={{
                        required: "Display name is required.",
                        validate: (value) => {
                          if (value.trim().length < 1) return "Display name can't be empty.";

                          if (value.split("  ").length > 1) return "Display name can't have two consecutive spaces.";

                          if (value.replace(/\s/g, "").length < 1)
                            return "Display name must be at least 1 characters long.";

                          if (value.replace(/\s/g, "").length > 20)
                            return "Display name must be less than 20 characters long.";

                          return true;
                        },
                      }}
                      render={({ field: { value, onChange, ref } }) => (
                        <Input
                          id="display_name"
                          name="display_name"
                          type="text"
                          value={value}
                          onChange={onChange}
                          ref={ref}
                          hasError={Boolean(errors?.display_name)}
                          placeholder="Enter your display name"
                          className={`w-full ${errors?.display_name ? "border-red-500" : ""}`}
                          maxLength={24}
                        />
                      )}
                    />
                    {errors?.display_name && <span className="text-xs text-red-500">Please enter display name</span>}
                  </div>

                  <div className="flex flex-col gap-1">
                    <h4 className="text-sm">
                      Timezone<span className="text-red-500">*</span>
                    </h4>

                    <Controller
                      name="user_timezone"
                      control={control}
                      rules={{ required: "Time zone is required" }}
                      render={({ field: { value, onChange } }) => (
                        <CustomSearchSelect
                          value={value}
                          label={
                            value ? TIME_ZONES.find((t) => t.value === value)?.label ?? value : "Select a timezone"
                          }
                          options={timeZoneOptions}
                          onChange={onChange}
                          optionsClassName="w-full"
                          buttonClassName={errors.user_timezone ? "border-red-500" : "border-none"}
                          className="rounded-md border-[0.5px] !border-custom-border-200"
                          input
                        />
                      )}
                    />
                    {errors.role && <span className="text-xs text-red-500">Please select a time zone</span>}
                  </div>

                  <div className="flex items-center justify-between py-2">
                    <Button variant="primary" type="submit" loading={isLoading}>
                      {isLoading ? "Saving..." : "Save changes"}
                    </Button>
                  </div>
                </div>
              </div>
            </form>
            <Disclosure as="div" className="border-t border-custom-border-100 md:px-8">
              {({ open }) => (
                <>
                  <Disclosure.Button
                    as="button"
                    type="button"
                    className="flex w-full items-center justify-between py-4"
                  >
                    <span className="text-lg tracking-tight">Deactivate account</span>
                    <ChevronDown className={`h-5 w-5 transition-all ${open ? "rotate-180" : ""}`} />
                  </Disclosure.Button>
                  <Transition
                    show={open}
                    enter="transition duration-100 ease-out"
                    enterFrom="transform opacity-0"
                    enterTo="transform opacity-100"
                    leave="transition duration-75 ease-out"
                    leaveFrom="transform opacity-100"
                    leaveTo="transform opacity-0"
                  >
                    <Disclosure.Panel>
                      <div className="flex flex-col gap-8">
                        <span className="text-sm tracking-tight">
                          The danger zone of the profile page is a critical area that requires careful consideration and
                          attention. When deactivating an account, all of the data and resources within that account
                          will be permanently removed and cannot be recovered.
                        </span>
                        <div>
                          <Button variant="danger" onClick={() => setDeactivateAccountModal(true)}>
                            Deactivate account
                          </Button>
                        </div>
                      </div>
                    </Disclosure.Panel>
                  </Transition>
                </>
              )}
            </Disclosure>
          </div>
        </div>
      </div>
    </>
  );
});

ProfileSettingsPage.getLayout = function getLayout(page: ReactElement) {
  return <ProfileSettingsLayout>{page}</ProfileSettingsLayout>;
};

export default ProfileSettingsPage;