// 记忆整理**应用路径** api 客户端的测试（切片 TIDY-1）。
//
// 为什么需要它：这张卡的价值全在「点得到且说真话」，而最容易走样的是**传输层**的三件事 ——
// ① 五个端点的 URL / 方法形状（批量是 `…/candidates/apply`，不是 `…/candidates/{id}/apply`）；
// ② `{data}` 信封解包（回到调用方的必须是 data 本身，不能是信封）；
// ③ **`status:"skipped"` 是 200、不是错误** —— 传输层不许把它抛成异常（界面才不会报红），
//    而真正的失败（tidy_unavailable / not_found / tidy_run_not_found）必须带着 `code` 抛出，
//    **绝不**回一份空结果假装「没有候选」。
//
// 跑法（与 flowTimeline.test.ts / configFacts.test.ts 同手法；项目无前端测试运行器）：
//
//   cd frontend/web \
//     && ./node_modules/.bin/esbuild src/lib/api/adminMemoryTidyApply.test.ts \
//          --bundle --platform=node --format=esm \
//          --banner:js='globalThis.window={localStorage:{getItem:()=>null,setItem:()=>{},removeItem:()=>{}}};' \
//          --outfile=/tmp/cyrene-memory-tidy-apply-api.test.mjs \
//     && node /tmp/cyrene-memory-tidy-apply-api.test.mjs
//
// `tsc --noEmit` 会对本文件做类型检查，因此它不 import `node:*`（用 globalThis 取 fetch）。

import { ApiError } from "./core";
import {
  adminTidyCandidateApply,
  adminTidyCandidateRevert,
  adminTidyCandidates,
  adminTidyCandidatesApplyBatch,
  adminTidyRun,
} from "./adminMemoryTidyApply";

let checks = 0;

function ok(cond: boolean, what: string): void {
  checks += 1;
  if (!cond) throw new Error(`FAILED: ${what}`);
}

function same<T>(got: T, want: T, what: string): void {
  ok(got === want, `${what}（实际 ${JSON.stringify(got)}，期望 ${JSON.stringify(want)}）`);
}

type Call = { url: string; method: string };
const calls: Call[] = [];

/** api 客户端的 `request` 会读 `localStorage` 取 token / API key；node 下没有它。 */
globalThis.localStorage = {
  getItem: () => null,
  setItem: () => {},
  removeItem: () => {},
} as unknown as Storage;

/** 2xx 桩：回 `{data: body}` 信封（真后端 writeJSON 就是这个形状）。 */
function stubOK(body: unknown): void {
  globalThis.fetch = ((url: string, init?: { method?: string }) => {
    calls.push({ url: String(url), method: init?.method ?? "GET" });
    return Promise.resolve({
      ok: true,
      status: 200,
      json: () => Promise.resolve({ data: body }),
    } as unknown as Response);
  }) as typeof globalThis.fetch;
}

/** 非 2xx 桩：回 `{error:{code,message}}` 信封（真后端 writeError 的形状）。 */
function stubErr(status: number, code: string, message: string): void {
  globalThis.fetch = ((url: string, init?: { method?: string }) => {
    calls.push({ url: String(url), method: init?.method ?? "GET" });
    return Promise.resolve({
      ok: false,
      status,
      json: () => Promise.resolve({ error: { code, message } }),
    } as unknown as Response);
  }) as typeof globalThis.fetch;
}

/** 跑一次调用并把它抛出来的错误码取回来（没抛则回 "no-error"）。 */
async function codeOf(task: () => Promise<unknown>): Promise<string> {
  try {
    await task();
    return "no-error";
  } catch (err: unknown) {
    return err instanceof ApiError ? (err.code ?? "no-code") : "not-apierror";
  }
}

// ── ① 候选列表：URL 形状 + `{data}` 解包 ────────────────────────────────────
const CANDIDATES_BODY = { candidates: [], count: 0 };
stubOK(CANDIDATES_BODY);
const list = await adminTidyCandidates({ status: "pending" });
same(calls[0].url, "/api/v1/admin/memories/candidates?status=pending", "候选列表 URL");
same(calls[0].method, "GET", "候选列表是只读 GET");
ok(list.candidates.length === 0 && list.count === 0, "解包 `{data}` 信封（回的是 data 本身）");

stubOK(CANDIDATES_BODY);
await adminTidyCandidates();
same(calls[calls.length - 1].url, "/api/v1/admin/memories/candidates", "不给 status 时不带查询串");

// ── ② 单条应用 / 回滚：路径 + POST，且 **skipped 是 200 不是错误** ─────────
const SKIPPED = {
  candidateId: "cand-1",
  action: "link",
  status: "skipped",
  reason: "action_not_applyable",
  affectedIds: [],
};
stubOK(SKIPPED);
const skipped = await adminTidyCandidateApply("cand-1");
same(calls[calls.length - 1].url, "/api/v1/admin/memories/candidates/cand-1/apply", "单条应用 URL");
same(calls[calls.length - 1].method, "POST", "应用是写动作 POST");
same(skipped.status, "skipped", "200 + skipped 正常解包（客户端不许把它抛成异常）");
same(skipped.reason, "action_not_applyable", "skipped 的机器可读原因要透传给调用方");

stubOK({ ...SKIPPED, status: "applied", affectedIds: ["mem-short"] });
const applied = await adminTidyCandidateApply("cand-1");
same(applied.status, "applied", "applied 回执按后端值透传");
same(applied.affectedIds.length, 1, "受影响行 id 要透传（回滚的抓手）");

stubOK({ candidateId: "cand-1", action: "merge", status: "applied", affectedIds: ["mem-short"] });
await adminTidyCandidateRevert("cand-1");
same(calls[calls.length - 1].url, "/api/v1/admin/memories/candidates/cand-1/revert", "回滚 URL");
same(calls[calls.length - 1].method, "POST", "回滚是写动作 POST");

// 候选 id 必须 URL 编码（不拼裸串）。
stubOK(SKIPPED);
await adminTidyCandidateApply("cand a/b");
same(
  calls[calls.length - 1].url,
  "/api/v1/admin/memories/candidates/cand%20a%2Fb/apply",
  "候选 id 要 URL 编码"
);

// ── ③ 批量应用：`…/candidates/apply` + `truncated`/`total` 原样透传 ──────────
const BATCH = {
  limit: 100,
  total: 342,
  truncated: true,
  applied: 90,
  skipped: 10,
  failed: 0,
  merged: 80,
  archived: 10,
  reclassified: 0,
  results: [SKIPPED],
};
stubOK(BATCH);
const batch = await adminTidyCandidatesApplyBatch();
same(calls[calls.length - 1].url, "/api/v1/admin/memories/candidates/apply", "批量应用 URL（不带 id）");
same(calls[calls.length - 1].method, "POST", "批量应用是写动作 POST");
same(batch.total, 342, "total 是真待定总数，原样透传");
same(batch.truncated, true, "truncated 原样透传（界面据此说「还剩多少未处理」）");

stubOK({ ...BATCH, runId: "run-1", total: 5, truncated: false });
await adminTidyCandidatesApplyBatch({ runId: "run-1", limit: 50 });
same(
  calls[calls.length - 1].url,
  "/api/v1/admin/memories/candidates/apply?runId=run-1&limit=50",
  "按轮次批量应用要带 runId 与 limit"
);

// ── ④ 手动真跑 ────────────────────────────────────────────────────────────
stubOK({
  runId: "run-9",
  trigger: "manual",
  ruleVersion: "t0.1",
  durationMs: 12,
  partitions: 1,
  scanned: 3,
  compared: 1,
  pairs: 1,
  vetoed: 0,
  errors: 0,
  vetoReasons: {},
  candidatesCreated: 2,
  candidatesDuplicate: 0,
  candidatesByAction: { merge: 2 },
});
const run = await adminTidyRun();
same(calls[calls.length - 1].url, "/api/v1/admin/memories/tidy/run", "手动真跑 URL");
same(calls[calls.length - 1].method, "POST", "手动真跑是写动作 POST");
same(run.candidatesCreated, 2, "真跑回执按后端值透传");

// ── ⑤ 诚实失败：错误码必须原样上抛（绝不回空结果） ──────────────────────────
stubErr(500, "tidy_unavailable", "记忆整理候选未接线");
same(
  await codeOf(() => adminTidyCandidates({ status: "pending" })),
  "tidy_unavailable",
  "写面未接线 ⇒ 抛 tidy_unavailable（不是空候选列表）"
);
stubErr(404, "not_found", "整理候选不存在");
same(await codeOf(() => adminTidyCandidateApply("nope")), "not_found", "候选不存在 ⇒ not_found");
stubErr(404, "tidy_run_not_found", "整理运行不存在");
same(
  await codeOf(() => adminTidyCandidatesApplyBatch({ runId: "nope" })),
  "tidy_run_not_found",
  "runId 查不到 ⇒ tidy_run_not_found（与「这一轮没有待定候选」是两件事）"
);
stubErr(409, "tidy_disabled", "记忆整理已被配置关闭");
same(await codeOf(() => adminTidyRun()), "tidy_disabled", "配置关闭 ⇒ 409 tidy_disabled");
stubErr(500, "tidy_run_unavailable", "记忆整理真跑入口未接线");
same(await codeOf(() => adminTidyRun()), "tidy_run_unavailable", "只接了试算 ⇒ 真跑回 unavailable");
stubErr(503, "tidy_timeout", "记忆整理真跑超时");
same(await codeOf(() => adminTidyRun()), "tidy_timeout", "超时 ⇒ 503 tidy_timeout");
stubErr(400, "bad_request", "invalid limit");
same(
  await codeOf(() => adminTidyCandidates({ status: "pending", limit: -1 })),
  "bad_request",
  "非法 limit 由后端回 400（客户端只转发合法值）"
);

// eslint-disable-next-line no-console
console.log(`adminMemoryTidyApply: ${checks} checks passed`);