"use client";
import { useI18n } from "@/components/I18nProvider";

import { useState } from "react";
import { useRouter } from "next/navigation";
import { createBrowserClient } from "@supabase/ssr";
import { passwordUpdateSchema } from "@/shared/account";

export function PasswordForm({ recovery = false }: { recovery?: boolean }) {
  const { t } = useI18n();
  const [current, setCurrent] = useState(""),
    [password, setPassword] = useState(""),
    [confirmation, setConfirmation] = useState(""),
    [nonce, setNonce] = useState(""),
    [needsNonce, setNeedsNonce] = useState(false),
    [error, setError] = useState(""),
    [message, setMessage] = useState(""),
    [busy, setBusy] = useState(false);
  const router = useRouter();
  async function submit(event: React.FormEvent) {
    event.preventDefault();
    setError("");
    setMessage("");
    const body = {
      password,
      ...(!recovery ? { currentPassword: current } : {}),
      ...(needsNonce ? { nonce } : {}),
    };
    const valid = passwordUpdateSchema.safeParse(body);
    if (!valid.success) {
      setError(valid.error.issues[0].message);
      return;
    }
    if (password !== confirmation) {
      setError("Your passwords do not match.");
      return;
    }
    setBusy(true);
    try {
      const response = await fetch("/api/v1/auth/password", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify(valid.data),
        signal: AbortSignal.timeout(30000),
      });
      const data = await response.json();
      if (!response.ok) {
        if (data.needsReauthentication) {
          const client = createBrowserClient(
            process.env.NEXT_PUBLIC_SUPABASE_URL!,
            process.env.NEXT_PUBLIC_SUPABASE_PUBLISHABLE_KEY!,
          );
          const { error } = await client.auth.reauthenticate();
          if (error) throw error;
          setNeedsNonce(true);
          setMessage(
            "Check your email for a verification code, then enter it below to finish.",
          );
          return;
        }
        throw new Error(data.error || "Could not update your password");
      }
      setCurrent("");
      setPassword("");
      setConfirmation("");
      setNonce("");
      setNeedsNonce(false);
      setMessage(data.message);
      if (recovery) {
        router.replace("/settings?password=updated");
        router.refresh();
      }
    } catch (e) {
      setError((e as Error).message);
    } finally {
      setBusy(false);
    }
  }
  return (
    <form onSubmit={submit} aria-busy={busy} className="password-form">
      {!recovery && (
        <label className="field">
          {t("Current password")}
          <input
            name="currentPassword"
            type="password"
            autoComplete="current-password"
            value={current}
            onChange={(e) => setCurrent(e.target.value)}
            required
            disabled={busy}
          />
        </label>
      )}
      <label className="field">
        {t("New password")}
        <input
          name="newPassword"
          type="password"
          autoComplete="new-password"
          minLength={12}
          value={password}
          onChange={(e) => setPassword(e.target.value)}
          required
          disabled={busy}
        />
        <small>
          {t("At least 12 characters. Use a unique password or passphrase.")}
        </small>
      </label>
      <label className="field">
        {t("Confirm new password")}
        <input
          name="confirmPassword"
          type="password"
          autoComplete="new-password"
          value={confirmation}
          onChange={(e) => setConfirmation(e.target.value)}
          required
          disabled={busy}
        />
      </label>
      {needsNonce && (
        <label className="field">
          {t("Email verification code")}
          <input
            inputMode="numeric"
            autoComplete="one-time-code"
            value={nonce}
            onChange={(e) => setNonce(e.target.value)}
            required
            disabled={busy}
          />
        </label>
      )}
      {error && (
        <p role="alert" className="error-message">
          {t(error)}
        </p>
      )}
      {message && (
        <p role="status" className="success-message">
          {t(message)}
        </p>
      )}
      <button className="button primary" disabled={busy}>
        {busy
          ? t("Updating…")
          : recovery
            ? t("Set new password")
            : t("Update password")}
      </button>
    </form>
  );
}