"use client";

import { ProgressBar } from "@tremor/react";
import Link from "next/link";
import { useRouter } from "next/navigation";
import { useForm } from "react-hook-form";

import ServerTrans from "@calcom/lib/components/ServerTrans";
import { IS_SMS_CREDITS_ENABLED } from "@calcom/lib/constants";
import { useLocale } from "@calcom/lib/hooks/useLocale";
import { useParamsWithFallback } from "@calcom/lib/hooks/useParamsWithFallback";
import { trpc } from "@calcom/trpc/react";
import { Button } from "@calcom/ui/components/button";
import { TextField, Label, InputError } from "@calcom/ui/components/form";
import { showToast } from "@calcom/ui/toast";

import { BillingCreditsSkeleton } from "./BillingCreditsSkeleton";

export default function BillingCredits() {
  const { t } = useLocale();
  const router = useRouter();

  const {
    register,
    handleSubmit,
    setValue,
    formState: { errors },
  } = useForm<{ quantity: number }>({ defaultValues: { quantity: 50 } });

  const params = useParamsWithFallback();

  const teamId = params.id ? Number(params.id) : undefined;
  const { data: creditsData, isLoading } = trpc.viewer.credits.getAllCredits.useQuery({ teamId });

  const buyCreditsMutation = trpc.viewer.credits.buyCredits.useMutation({
    onSuccess: (data) => {
      if (data.sessionUrl) {
        router.push(data.sessionUrl);
      }
    },
    onError: () => {
      showToast(t("credit_purchase_failed"), "error");
    },
  });

  if (!IS_SMS_CREDITS_ENABLED) {
    return null;
  }

  if (isLoading && teamId) return <BillingCreditsSkeleton />;
  if (!creditsData) return null;

  const onSubmit = (data: { quantity: number }) => {
    buyCreditsMutation.mutate({ quantity: data.quantity, teamId });
  };

  const teamCreditsPercentageUsed =
    creditsData.credits.totalMonthlyCredits > 0
      ? (creditsData.credits.totalRemainingMonthlyCredits / creditsData.credits.totalMonthlyCredits) * 100
      : 0;

  return (
    <div className="border-subtle mt-8 space-y-6 rounded-lg border px-6 py-6 pb-6 text-sm sm:space-y-8">
      <div>
        <h2 className="text-base font-semibold">{t("credits")}</h2>
        <ServerTrans
          t={t}
          i18nKey="view_and_manage_credits_description"
          components={[
            <Link
              key="Credit System"
              className="underline underline-offset-2"
              target="_blank"
              href="https://cal.com/help/billing-and-usage/messaging-credits">
              Learn more
            </Link>,
          ]}
        />
        <div className="-mx-6 mt-6">
          <hr className="border-subtle" />
        </div>
        <div className="mt-6">
          {creditsData.credits.totalMonthlyCredits > 0 ? (
            <div className="mb-4">
              <Label>{t("monthly_credits")}</Label>
              <ProgressBar
                color="green"
                percentageValue={teamCreditsPercentageUsed}
                label={`${Math.max(0, Math.round(teamCreditsPercentageUsed))}%`}
              />
              <div className="text-subtle">
                <div>
                  {t("total_credits", {
                    totalCredits: creditsData.credits.totalMonthlyCredits,
                  })}
                </div>
                <div>
                  {t("remaining_credits", {
                    remainingCredits: creditsData.credits.totalRemainingMonthlyCredits,
                  })}
                </div>
              </div>
            </div>
          ) : (
            <></>
          )}
          <Label>
            {creditsData.credits.totalMonthlyCredits ? t("additional_credits") : t("available_credits")}
          </Label>
          <div className="mt-2 text-sm">{creditsData.credits.additionalCredits}</div>
          <div className="-mx-6 mb-6 mt-6">
            <hr className="border-subtle mb-3 mt-3" />
          </div>
          <form onSubmit={handleSubmit(onSubmit)} className="flex">
            <div className="mr-auto">
              <div className="mb-2 font-semibold">{t("buy_additional_credits")}</div>
              <div className="flex flex-col">
                <TextField
                  required
                  type="number"
                  {...register("quantity", {
                    required: t("error_required_field"),
                    min: { value: 50, message: t("minimum_of_credits_required") },
                    valueAsNumber: true,
                  })}
                  label=""
                  containerClassName="w-60"
                  onChange={(e) => setValue("quantity", Number(e.target.value))}
                  min={50}
                  addOnSuffix={<>{t("credits")}</>}
                />
                {errors.quantity && <InputError message={errors.quantity.message ?? t("invalid_input")} />}
              </div>
            </div>
            <div className="mb-1 mt-auto">
              <Button color="primary" target="_blank" EndIcon="external-link" type="submit">
                {t("buy_credits")}
              </Button>
            </div>
          </form>
        </div>
      </div>
    </div>
  );
}