import type { DecisionRow } from "@umt/db";
import type { ServerContext } from "./types.ts";

// 待处理"处理"端点(sources-identity routes/decisions.ts)的执行钩子:其它模块按 dedupe_key 认领自己的事项,
// 在事项关闭前同步执行所选处理(失败抛错 → 事项保持打开,错误回给用户)。按 ctx 隔离(测试里多个装配互不影响)。

export interface DecisionResolveBody {
  optionKey?: string | undefined;
  dismiss?: boolean | undefined;
  note?: string | undefined;
  identity?:
    | { mediaEntityId?: string | undefined; tmdb?: { type: "movie" | "tv"; id: string } | undefined }
    | undefined;
}

export interface DecisionHookActor {
  type: string;
  id: string | null;
}

export interface DecisionHook {
  /** 认领该事项(通常按 dedupe_key 前缀) */
  match(d: DecisionRow): boolean;
  /** 执行所选处理;返回写进 resolution.execution 的摘要 */
  execute(d: DecisionRow, body: DecisionResolveBody, actor: DecisionHookActor): Promise<Record<string, unknown>>;
}

const hooks = new WeakMap<ServerContext, DecisionHook[]>();

export function registerDecisionHook(ctx: ServerContext, hook: DecisionHook): void {
  const list = hooks.get(ctx) ?? [];
  list.push(hook);
  hooks.set(ctx, list);
}

export function decisionHookFor(ctx: ServerContext, d: DecisionRow): DecisionHook | undefined {
  return hooks.get(ctx)?.find((h) => h.match(d));
}