/**
 * 运营后台接口（/ops/v1，docs/architecture/ops-api.md）。内部工具，类型在这里手写；cookie 会话 + CSRF 头。
 */
export class OpsError extends Error {
  constructor(
    readonly status: number,
    readonly code: string,
    message: string,
  ) {
    super(message);
  }
}

/** 页面上做完操作（开通、退回……）发这个事件，菜单上的待办数跟着刷新 */
export const CHANGED = "ops:changed";
export const notifyChanged = () => window.dispatchEvent(new Event(CHANGED));

let onUnauthorized: () => void = () => {};
export function setUnauthorized(fn: () => void) {
  onUnauthorized = fn;
}

function csrf(): string {
  return document.cookie.split("; ").find((c) => c.startsWith("bd_ops_csrf="))?.split("=")[1] ?? "";
}

export async function ops<T>(path: string, init: { method?: string; body?: unknown; query?: Record<string, string | undefined> } = {}): Promise<T> {
  const qs = new URLSearchParams(Object.entries(init.query ?? {}).filter((e): e is [string, string] => !!e[1])).toString();
  const res = await fetch(`/ops/v1${path}${qs ? `?${qs}` : ""}`, {
    method: init.method ?? "GET",
    credentials: "include",
    headers: { "Content-Type": "application/json", ...(init.method && init.method !== "GET" ? { "X-CSRF-Token": csrf() } : {}) },
    body: init.body === undefined ? undefined : JSON.stringify(init.body),
  });
  if (res.status === 204) return undefined as T;
  const data = await res.json().catch(() => ({}));
  if (!res.ok) {
    if (res.status === 401 && path !== "/auth/login") onUnauthorized();
    throw new OpsError(res.status, data.code ?? "error", data.detail ?? data.title ?? "请求失败");
  }
  return data as T;
}

/** 时间一律按北京时间显示：「2026-11-05 14:45」 */
const BJ = new Intl.DateTimeFormat("sv-SE", {
  timeZone: "Asia/Shanghai",
  year: "numeric",
  month: "2-digit",
  day: "2-digit",
  hour: "2-digit",
  minute: "2-digit",
  hour12: false,
});
export const fmt = (iso: string | null | undefined) => (iso ? BJ.format(new Date(iso)) : "—");
export const day = (iso: string | null | undefined) => (iso ? BJ.format(new Date(iso)).slice(0, 10) : "—");

export type Tenant = {
  id: string;
  name: string;
  status: string;
  created_at: string;
  plan: { code: string | null; expired: boolean; ends_at: string | null };
  balance: number | null;
  projects: number;
  phone_hint: string | null;
  open_requests: number;
};
export type TenantDetail = Tenant & {
  members: { display_name: string; role: string; status: string; phone_hint: string | null; last_login_at: string | null }[];
  subscriptions: { plan_code: string; status: string; source: string; starts_at: string; ends_at: string | null; request_no: string | null }[];
  quota_entries: { kind: string; amount: number; reason: string | null; ref_type: string | null; created_at: string; unit: string; by_ops: boolean }[];
  jobs: Record<string, Record<string, number>>;
};
export type ActivationRequest = {
  id: string;
  request_no: string;
  tenant: { id: string; name: string };
  plan_code: string;
  status: "submitted" | "paid" | "activated" | "rejected" | "cancelled";
  invoice_info: Record<string, string>;
  ops_note: string | null;
  invoice_no: string | null;
  applicant_phone_hint: string | null;
  created_at: string;
  handled_at: string | null;
};
export type Feedback = {
  id: string;
  kind: string;
  source: string;
  note: string | null;
  object_type: string;
  tenant_name: string;
  title: string | null;
  severity: string | null;
  rule_code: string | null;
  detector: string | null;
  finding_type: string | null;
  rule_set_version: string | null;
  prompt_versions: Record<string, string> | null;
  pages: number[];
  created_at: string;
};
export type FailedJob = {
  kind: string;
  id: string;
  tenant: { id: string; name: string };
  stage: string | null;
  error_class: string | null;
  error_code: string | null;
  error_detail: string | null;
  created_at: string;
  duration_s: number | null;
  ai_calls: number;
};
export type AuditEvent = {
  id: string;
  tenant: { id: string; name: string };
  actor_kind: string;
  actor_name: string | null;
  action: string;
  object_type: string;
  object_id: string | null;
  project_id: string | null;
  scrubbed: boolean;
  created_at: string;
};
export type Operator = {
  id: string;
  username: string;
  display_name: string;
  role: string;
  role_label: string;
  permissions: string[];
  env: "dev" | "test" | "prod";
};
export type Summary = { open_requests: number; failed_jobs_7d: number; feedback_7d: number };

export const REQUEST_STATUS: Record<string, string> = {
  submitted: "等待转账",
  paid: "已到账",
  activated: "已开通",
  rejected: "已退回",
  cancelled: "已撤回",
};
export const QUOTA_KIND: Record<string, string> = {
  grant: "发放",
  hold: "预扣",
  settle: "结算",
  release: "退回",
  expire: "过期",
  adjust: "调整",
  waive: "免扣",
};
export const JOB_KIND: Record<string, string> = { parse_job: "解析", check_run: "检查", report_job: "报告" };