"use client";

import { useActionState } from "react";
import { Button } from "@/components/ui/button";
import {
  Field,
  FieldError,
  FieldGroup,
  FieldLabel,
} from "@/components/ui/field";
import { Input } from "@/components/ui/input";
import { login, type LoginState } from "../../actions";

const initialState: LoginState = {};

const fieldInputClass =
  "h-9 rounded-none border-x-0 border-t-0 border-b border-dashed border-input bg-transparent px-0 font-mono text-[15px] text-foreground focus-visible:border-foreground focus-visible:ring-0 md:text-[15px] dark:bg-transparent";

const fieldLabelClass =
  "font-mono text-[10px] font-normal tracking-[0.18em] text-muted-foreground uppercase";

export function LoginForm() {
  const [state, formAction, pending] = useActionState(login, initialState);

  return (
    <div className="animate-in fade-in slide-in-from-bottom-2 duration-500 ease-out motion-reduce:animate-none">
      <div className="drop-shadow-[0_20px_32px_rgba(29,28,23,0.16)] dark:drop-shadow-[0_20px_32px_rgba(0,0,0,0.6)]">
        <section className="bg-card px-7 pt-7 pb-6 text-card-foreground">
          <p className="text-center text-[10px] font-medium tracking-[0.3em] text-muted-foreground uppercase">
            Cleo Minimarket
          </p>

          <div
            aria-hidden="true"
            className="mt-4 border-t border-dashed border-border"
          />

          <h1 className="mt-6 text-[28px] leading-none font-semibold tracking-[-0.04em]">
            Masuk
          </h1>
          <span
            aria-hidden="true"
            className="mt-2 block h-1.5 w-14 -rotate-2 bg-[#FFD34D]"
          />
          <p className="mt-4 text-[13px] leading-relaxed text-muted-foreground">
            Gunakan akun karyawan toko untuk melanjutkan.
          </p>

          <form action={formAction} className="mt-7">
            <FieldGroup className="gap-5">
              <Field className="gap-1.5">
                <FieldLabel htmlFor="username" className={fieldLabelClass}>
                  Username
                </FieldLabel>
                <Input
                  id="username"
                  name="username"
                  autoComplete="username"
                  defaultValue={state.username}
                  required
                  className={fieldInputClass}
                />
              </Field>

              <Field className="gap-1.5">
                <FieldLabel htmlFor="password" className={fieldLabelClass}>
                  Password
                </FieldLabel>
                <Input
                  id="password"
                  name="password"
                  type="password"
                  autoComplete="current-password"
                  required
                  className={fieldInputClass}
                />
              </Field>

              {state.error && (
                <FieldError className="border border-dashed border-destructive/40 bg-destructive/5 px-3 py-2 text-[12px] leading-relaxed">
                  {state.error}
                </FieldError>
              )}

              <Button
                type="submit"
                disabled={pending}
                className="h-11 w-full rounded-none text-[11px] tracking-[0.24em] uppercase"
              >
                {pending ? "Memproses..." : "Masuk"}
              </Button>
            </FieldGroup>
          </form>

          <div
            aria-hidden="true"
            className="mt-7 border-t border-dashed border-border"
          />

          <p className="mt-4 text-center text-[10px] leading-relaxed text-muted-foreground">
            Butuh akses? Hubungi petugas administrasi.
          </p>
        </section>

        <ReceiptEdge />
      </div>
    </div>
  );
}

function ReceiptEdge() {
  const width = 320;
  const depth = 9;
  const tooth = 20;

  let d = `M0 0H${width}`;
  for (let x = width; x > 0; x -= tooth) {
    d += `L${x - tooth / 2} ${depth}L${x - tooth} 0`;
  }

  return (
    <svg
      viewBox={`0 0 ${width} ${depth}`}
      preserveAspectRatio="none"
      aria-hidden="true"
      className="block h-[9px] w-full fill-card"
    >
      <path d={`${d}Z`} />
    </svg>
  );
}