"use client";

import { useAutoAnimate } from "@formkit/auto-animate/react";
import { useMemo } from "react";
import { useForm, useFieldArray, Controller } from "react-hook-form";

import SectionBottomActions from "@calcom/features/settings/SectionBottomActions";
import { classNames } from "@calcom/lib";
import { useLocale } from "@calcom/lib/hooks/useLocale";
import { MembershipRole } from "@calcom/prisma/enums";
import { trpc } from "@calcom/trpc/react";
import type { RouterOutputs } from "@calcom/trpc/react";
import { Button, Form, SettingsToggle, showToast, Icon, Input } from "@calcom/ui";

interface ProfileViewProps {
  team: RouterOutputs["viewer"]["teams"]["get"];
}

const OTHER_FIELD_ID = -1;

const InternalNotePresetsView = ({ team }: ProfileViewProps) => {
  const { t } = useLocale();
  const utils = trpc.useUtils();
  const { data: _loadedPresets } = trpc.viewer.teams.getInternalNotesPresets.useQuery({
    teamId: team?.id as number,
  });

  const loadedPresets = useMemo(() => {
    return (_loadedPresets ?? []).map((preset) => ({
      ...preset,
      cancellationReason: preset.cancellationReason ?? undefined,
    }));
  }, [_loadedPresets]);

  const hasExistingPresets = loadedPresets.length > 0;

  type FormValues = {
    presets: { id: number; name: string; cancellationReason?: string | undefined }[];
  };

  const form = useForm<FormValues>({
    values: {
      presets: loadedPresets,
    },
  });

  const { fields, append, remove, replace } = useFieldArray({
    control: form.control,
    name: "presets",
  });

  const addNewPreset = () => {
    append({ id: OTHER_FIELD_ID, name: "" });
  };

  const updatePresetsMutation = trpc.viewer.teams.updateInternalNotesPresets.useMutation({
    onSuccess: () => {
      showToast(t("internal_note_presets_updated_successfully"), "success");
      utils.viewer.teams.getInternalNotesPresets.invalidate();
    },
    onError: (error) => {
      showToast(error.message || t("something_went_wrong"), "error");
    },
  });

  const onSubmit = async (data: FormValues) => {
    if (!team?.id) return;

    updatePresetsMutation.mutate({
      teamId: team.id,
      presets: data.presets,
    });
  };

  const [animateRef] = useAutoAnimate<HTMLDivElement>();

  const isAdmin =
    team && (team.membership.role === MembershipRole.OWNER || team.membership.role === MembershipRole.ADMIN);

  if (!isAdmin) {
    return (
      <div className="border-subtle rounded-md border p-5">
        <span className="text-default text-sm">{t("only_owner_change")}</span>
      </div>
    );
  }

  return (
    <Form form={form} handleSubmit={(e) => onSubmit(e)}>
      <Controller
        name="presets"
        render={({ field: { value } }) => {
          const isChecked = hasExistingPresets || (value && value.length > 0);
          return (
            <SettingsToggle
              toggleSwitchAtTheEnd={true}
              labelClassName="text-sm"
              title={t("internal_note_presets")}
              description={t("internal_note_presets_description")}
              checked={isChecked}
              childrenClassName="lg:ml-0"
              onCheckedChange={async (active) => {
                if (active && !value?.length) {
                  append({ id: OTHER_FIELD_ID, name: "" });
                } else {
                  replace([]);
                  if (!active && team?.id && hasExistingPresets) {
                    updatePresetsMutation.mutate({
                      teamId: team.id,
                      presets: [],
                    });
                  }
                }
              }}
              switchContainerClassName={classNames(
                "border-subtle mt-6 rounded-lg border py-6 px-4 sm:px-6",
                isChecked && "rounded-b-none"
              )}>
              <div className="border-subtle border border-y-0 p-6">
                <div className="flex flex-col space-y-4" ref={animateRef}>
                  {fields.map((field, index) => (
                    <div key={field.id} className="space-y-2">
                      <div className="flex items-center space-x-2">
                        <Controller
                          name={`presets.${index}.name`}
                          control={form.control}
                          render={({ field }) => (
                            <Input
                              type="text"
                              {...field}
                              placeholder={t("internal_booking_note")}
                              className="!mb-0"
                            />
                          )}
                        />
                        <Button
                          type="button"
                          color="destructive"
                          variant="icon"
                          onClick={() => remove(index)}
                          disabled={fields.length === 1}>
                          <Icon name="trash" className="h-4 w-5" />
                        </Button>
                      </div>
                      <div className="flex items-center gap-2">
                        <Icon name="corner-down-right" className="h-4 w-4" />
                        <Controller
                          name={`presets.${index}.cancellationReason`}
                          control={form.control}
                          render={({ field }) => (
                            <Input
                              type="text"
                              {...field}
                              placeholder={t("internal_note_cancellation_reason")}
                              className="!mb-0"
                            />
                          )}
                        />
                      </div>
                    </div>
                  ))}
                </div>
                <Button
                  type="button"
                  color="minimal"
                  StartIcon="plus"
                  onClick={addNewPreset}
                  className="mt-4">
                  {t("add_preset")}
                </Button>
              </div>
              <SectionBottomActions align="end">
                <Button type="submit" color="primary" loading={updatePresetsMutation.isPending}>
                  {t("update")}
                </Button>
              </SectionBottomActions>
            </SettingsToggle>
          );
        }}
      />
    </Form>
  );
};

export default InternalNotePresetsView;