"use client";

import { useEffect, useState } from "react";
import Modal from "@/components/Modal";
import { POST_DELETE_TYPES } from "@/lib/api";

/**
 * Staff 软删帖：必填删除类型 + 理由。
 * 作者自删仍用 ConfirmDialog，不走此组件。
 */
export default function StaffDeletePostModal({
  open,
  title,
  busy,
  onClose,
  onConfirm,
}: {
  open: boolean;
  /** 帖子标题，展示在说明里 */
  title?: string;
  busy?: boolean;
  onClose: () => void;
  onConfirm: (opts: { delete_type: string; delete_reason: string }) => void;
}) {
  const [deleteType, setDeleteType] = useState("spam");
  const [reason, setReason] = useState("");
  const [err, setErr] = useState("");

  useEffect(() => {
    if (open) {
      setDeleteType("spam");
      setReason("");
      setErr("");
    }
  }, [open]);

  if (!open) return null;

  const submit = () => {
    const r = reason.trim();
    if (!r) {
      setErr("请填写删除理由");
      return;
    }
    if ([...r].length > 200) {
      setErr("删除理由不能超过 200 字");
      return;
    }
    onConfirm({ delete_type: deleteType, delete_reason: r });
  };

  return (
    <Modal
      open
      title="删除帖子"
      description={
        title
          ? `将删除「${title}」。列表不再展示；原链接会显示删除类型与理由。`
          : "列表不再展示；原链接会显示删除类型与理由。"
      }
      onClose={onClose}
      busy={busy}
      maxWidthClass="max-w-[440px]"
      panelClassName="p-5"
      ariaLabel="删除帖子"
      footer={
        <>
          <button type="button" className="btn btn-line" onClick={onClose} disabled={busy}>
            取消
          </button>
          <button type="button" className="btn btn-danger" onClick={submit} disabled={busy}>
            {busy ? "删除中…" : "确认删除"}
          </button>
        </>
      }
    >
      <p className="mb-2 text-[12.5px]" style={{ color: "var(--ink)" }}>
        删除类型
      </p>
      <div className="flex flex-col gap-1.5 mb-4" role="radiogroup" aria-label="删除类型">
        {POST_DELETE_TYPES.map((t) => {
          const active = deleteType === t.value;
          return (
            <button
              key={t.value}
              type="button"
              role="radio"
              aria-checked={active}
              onClick={() => setDeleteType(t.value)}
              className="text-left rounded-lg px-3 py-2 text-[13px] transition-colors"
              style={{
                border: `1.5px solid ${active ? "var(--accent)" : "var(--line)"}`,
                background: active ? "var(--accent-soft)" : "var(--panel-2)",
                color: active ? "var(--accent)" : "var(--ink)",
              }}
            >
              {t.label}
            </button>
          );
        })}
      </div>
      <label className="block mb-1.5 text-[12.5px]" style={{ color: "var(--ink)" }} htmlFor="delete-reason">
        删除理由 <span style={{ color: "var(--danger)" }}>*</span>
      </label>
      <textarea
        id="delete-reason"
        className="field"
        rows={3}
        value={reason}
        onChange={(e) => {
          setReason(e.target.value);
          setErr("");
        }}
        placeholder="将展示在帖子专用页与作者通知中"
        maxLength={200}
      />
      {err && (
        <p className="mt-2 text-[12px]" style={{ color: "var(--danger)" }}>
          {err}
        </p>
      )}
    </Modal>
  );
}