import test from "node:test";
import assert from "node:assert/strict";
import { readFileSync } from "node:fs";
import { resolve } from "node:path";

const route = readFileSync(resolve("src/app/api/admin/usage/aggregate/route.ts"), "utf8");
const listRoute = readFileSync(resolve("src/app/api/admin/usage/route.ts"), "utf8");
const simulator = readFileSync(resolve("src/components/admin/pricing-simulator.tsx"), "utf8");
const usageResource = readFileSync(resolve("src/components/admin/billing-operations-resources.tsx"), "utf8");

test("admin usage aggregate is a read-only 30-day billing report", () => {
  assert.match(route, /requirePermission\("billing\.orders\.read"\)/);
  assert.match(route, /interval '30 days'/);
  assert.match(route, /percentile_cont\(0\.50\)/);
  assert.match(route, /percentile_cont\(0\.95\)/);
  assert.match(route, /hasData/);
  assert.match(route, /report\.full/);
  assert.doesNotMatch(route, /export async function POST/);
});

test("admin usage aggregate exposes cache hit rate from metadata without mixing windows", () => {
  assert.match(route, /metadata \? 'cache'/);
  assert.match(route, /readTokens/);
  assert.match(route, /writeTokens/);
  assert.match(route, /noCacheTokens/);
  assert.match(route, /days7/);
  assert.match(route, /days30/);
  assert.match(route, /hitRate/);
  assert.match(route, /cacheShare/);
  assert.match(route, /make_interval\(days => w\.days\)/);
  assert.doesNotMatch(route, /create index|alter table public\.usage_ledger/);
});

test("admin usage list returns cache read tokens from ledger metadata", () => {
  assert.match(listRoute, /requirePermission\("billing\.orders\.read"\)/);
  assert.match(listRoute, /metadata->'cache'->>'readTokens'/);
  assert.match(listRoute, /cacheReadTokens/);
  assert.match(usageResource, /缓存读 tokens/);
  assert.match(simulator, /缓存命中/);
});