"use client";

import { zodResolver } from "@hookform/resolvers/zod";
import { Loader2 } from "lucide-react";
import { useEffect, useState } from "react";
import { Controller, useForm } from "react-hook-form";
import { PasswordInput } from "@/components/password-input";
import { ResponsiveDialog } from "@/components/responsive-dialog";
import {
  AlertDialog,
  AlertDialogCancel,
  AlertDialogContent,
  AlertDialogDescription,
  AlertDialogFooter,
  AlertDialogHeader,
  AlertDialogTitle,
} from "@/components/ui/alert-dialog";
import { Button } from "@/components/ui/button";
import { Field, FieldDescription, FieldError, FieldGroup, FieldLabel } from "@/components/ui/field";
import { Textarea } from "@/components/ui/textarea";
import { tr } from "@/i18n/tr";
import type { ActionResult } from "@/lib/action-result";
import {
  banUserSchema,
  setPasswordSchema,
  type BanUserInput,
  type SetPasswordInput,
} from "@/shared/schemas/user";
import type { AdminUser } from "../types";

const t = tr.adminUsers;

type DialogProps<T> = {
  user: AdminUser | undefined;
  open: boolean;
  onOpenChange: (open: boolean) => void;
  onConfirm: (user: AdminUser, values: T) => Promise<ActionResult>;
};

export function SetPasswordDialog({
  user,
  open,
  onOpenChange,
  onConfirm,
}: DialogProps<{ password: string }>) {
  const form = useForm<SetPasswordInput>({
    resolver: zodResolver(setPasswordSchema),
    defaultValues: { password: "" },
  });
  useEffect(() => {
    if (open) form.reset({ password: "" });
  }, [open, form]);

  async function onSubmit(values: SetPasswordInput) {
    if (!user) return;
    const result = await onConfirm(user, values);
    if (result.ok) onOpenChange(false);
    else form.setError("root", { message: result.error });
  }

  return (
    <ResponsiveDialog
      open={open}
      onOpenChange={onOpenChange}
      title={t.password.title}
      description={user ? t.password.description(user.name) : undefined}
      footer={
        <>
          <Button variant="outline" type="button" onClick={() => onOpenChange(false)}>
            {tr.common.cancel}
          </Button>
          <Button type="submit" form="password-form" disabled={form.formState.isSubmitting}>
            {form.formState.isSubmitting ? <Loader2 className="animate-spin" /> : null}
            {t.password.confirm}
          </Button>
        </>
      }
    >
      <form id="password-form" onSubmit={form.handleSubmit(onSubmit)} noValidate>
        <FieldGroup>
          <Controller
            name="password"
            control={form.control}
            render={({ field, fieldState }) => (
              <Field data-invalid={fieldState.invalid}>
                <FieldLabel htmlFor="new-password">{t.password.newPassword}</FieldLabel>
                <PasswordInput
                  {...field}
                  id="new-password"
                  autoComplete="new-password"
                  aria-invalid={fieldState.invalid}
                  aria-describedby="new-password-hint"
                />
                <FieldDescription id="new-password-hint">{t.form.passwordHint}</FieldDescription>
                {fieldState.invalid ? <FieldError errors={[fieldState.error]} /> : null}
              </Field>
            )}
          />
          {form.formState.errors.root ? (
            <FieldError>{form.formState.errors.root.message}</FieldError>
          ) : null}
        </FieldGroup>
      </form>
    </ResponsiveDialog>
  );
}

export function BanUserDialog({
  user,
  open,
  onOpenChange,
  onConfirm,
}: DialogProps<{ reason?: string }>) {
  const form = useForm<BanUserInput, unknown, { reason?: string }>({
    resolver: zodResolver(banUserSchema),
    defaultValues: { reason: "" },
  });
  useEffect(() => {
    if (open) form.reset({ reason: "" });
  }, [open, form]);

  async function onSubmit(values: { reason?: string }) {
    if (!user) return;
    const result = await onConfirm(user, values);
    if (result.ok) onOpenChange(false);
    else form.setError("root", { message: result.error });
  }

  return (
    <ResponsiveDialog
      open={open}
      onOpenChange={onOpenChange}
      title={t.ban.title}
      description={user ? t.ban.description(user.name) : undefined}
      footer={
        <>
          <Button variant="outline" type="button" onClick={() => onOpenChange(false)}>
            {tr.common.cancel}
          </Button>
          <Button
            type="submit"
            form="ban-form"
            variant="destructive"
            disabled={form.formState.isSubmitting}
          >
            {form.formState.isSubmitting ? <Loader2 className="animate-spin" /> : null}
            {t.ban.confirm}
          </Button>
        </>
      }
    >
      <form id="ban-form" onSubmit={form.handleSubmit(onSubmit)} noValidate>
        <FieldGroup>
          <Controller
            name="reason"
            control={form.control}
            render={({ field, fieldState }) => (
              <Field data-invalid={fieldState.invalid}>
                <FieldLabel htmlFor="ban-reason">{t.ban.reason}</FieldLabel>
                <Textarea
                  {...field}
                  value={field.value ?? ""}
                  id="ban-reason"
                  rows={3}
                  aria-invalid={fieldState.invalid}
                />
                {fieldState.invalid ? <FieldError errors={[fieldState.error]} /> : null}
              </Field>
            )}
          />
          {form.formState.errors.root ? (
            <FieldError>{form.formState.errors.root.message}</FieldError>
          ) : null}
        </FieldGroup>
      </form>
    </ResponsiveDialog>
  );
}

export function DeleteUserDialog({ user, open, onOpenChange, onConfirm }: DialogProps<void>) {
  const [pending, setPending] = useState(false);
  const [error, setError] = useState<string | null>(null);

  function handleOpenChange(next: boolean) {
    if (!next) setError(null);
    onOpenChange(next);
  }

  async function confirm() {
    if (!user) return;
    setPending(true);
    const result = await onConfirm(user, undefined);
    setPending(false);
    if (result.ok) handleOpenChange(false);
    else setError(result.error);
  }

  return (
    <AlertDialog open={open} onOpenChange={handleOpenChange}>
      <AlertDialogContent>
        <AlertDialogHeader>
          <AlertDialogTitle>{t.remove.title}</AlertDialogTitle>
          <AlertDialogDescription>
            {user ? t.remove.description(user.name) : null}
          </AlertDialogDescription>
        </AlertDialogHeader>
        {error ? <FieldError>{error}</FieldError> : null}
        <AlertDialogFooter>
          <AlertDialogCancel disabled={pending}>{tr.common.cancel}</AlertDialogCancel>
          {/* AlertDialogAction otomatik kapanır; sonuç beklenmesi için normal düğme. */}
          <Button variant="destructive" onClick={confirm} disabled={pending}>
            {pending ? <Loader2 className="animate-spin" /> : null}
            {t.remove.confirm}
          </Button>
        </AlertDialogFooter>
      </AlertDialogContent>
    </AlertDialog>
  );
}