import assert from "node:assert/strict";
import { spawnSync } from "node:child_process";
import { readFileSync } from "node:fs";
import { fileURLToPath } from "node:url";
import test from "node:test";
import { completeUsage } from "../src/lib/consultation-billing.ts";
import { rectificationAgentRouteSurface } from "./rectification-agent-route-surface.ts";

const root = new URL("../", import.meta.url);
// 原值: 读 app/api/rectification/agent/route.ts 单文件。新值: rectificationAgentRouteSurface（route.ts + 拆出的 agent-route-*.ts，见 rectification-agent-route-surface.ts）。原因: TASK-rectification-code-split-20260926 只搬不改，整文件断言跟着代码走；切片断言另行改写。
const rectificationRoute = rectificationAgentRouteSurface;
const consultRoute = readFileSync(new URL("src/app/api/consult/route.ts", root), "utf8");
const packagesRoute = readFileSync(new URL("src/app/api/admin/packages/route.ts", root), "utf8");

function sourceBetween(source: string, start: string, end: string): string {
  const startIndex = source.indexOf(start);
  const endIndex = source.indexOf(end, startIndex + start.length);
  assert.ok(startIndex >= 0, `missing start marker: ${start}`);
  assert.ok(endIndex > startIndex, `missing end marker: ${end}`);
  return source.slice(startIndex, endIndex);
}

test("Agentic rectification reuses one case-level usage authorization and the session-pinned model version", () => {
  assert.match(rectificationRoute, /import \{ createServerSupabaseClient \} from "@\/lib\/supabase\/server"/);
  assert.match(rectificationRoute, /supabase = await createServerSupabaseClient\(\)/);
  // Former value: select("id,messages,session_type,model_id,model_config_version,agentic_rectification_case_id")
  // Messages were unused on this route and inflated every rectification turn.
  assert.match(rectificationRoute, /select\("id,session_type,model_id,model_config_version,agentic_rectification_case_id"\)/);
  assert.match(rectificationRoute, /resolveSessionLanguageModel\(\s*chatSession\.model_id,\s*chatSession\.model_config_version,?\s*\)/);
  assert.match(rectificationRoute, /modelConfigVersion: selectedModel\.configVersion/);
  assert.doesNotMatch(rectificationRoute, /loadLanguageModelCatalog|resolveLanguageModelFromCatalog|\bresolveLanguageModel\(|\bdefaultLanguageModel\(/);
  assert.match(rectificationRoute, /const billingRequestPrefix = `rectification:case:\$\{caseId\}`/);
  assert.match(rectificationRoute, /from\("usage_reservations"\)[\s\S]*\.eq\("feature_key", "rectification"\)[\s\S]*\.like\("request_id", `\$\{billingRequestPrefix\}%`\)/);
  assert.match(rectificationRoute, /return reservations.length === 0[\s\S]*`\$\{billingRequestPrefix\}:retry:\$\{reservations.length\}`/);
  assert.match(rectificationRoute, /authorizeUsage\(accounting, \{[\s\S]*requestId: billingRequestId/);
  assert.match(rectificationRoute, /completeUsage\(accounting, userId, billingRequestId,/);
  assert.match(rectificationRoute, /releaseUsage\(accounting, userId, billingRequestId,/);
});

test("Agentic rectification preserves pricing failure codes for logs and maps them to one safe public error", () => {
  const reserveBilling = sourceBetween(rectificationRoute, "async reserve() {", "async complete(usage) {");
  const errorMapping = sourceBetween(rectificationRoute, "const code = error instanceof RectificationToolServiceError", "      } finally {");

  assert.match(rectificationRoute, /import \{ FeaturePricingError, resolveFeaturePricing \} from "@\/lib\/feature-pricing"/);
  assert.match(reserveBilling, /error instanceof FeaturePricingError \? error\.code : "billing_unavailable"/);
  assert.match(reserveBilling, /reserve failed case=\$\{caseId\} code=\$\{reason\}/);
  assert.match(reserveBilling, /return \{ success: false, reason, status: 503 \}/);
  assert.match(errorMapping, /code\.startsWith\("feature_pricing_"\) \|\| code === "billing_unavailable"/);
  assert.match(errorMapping, /code: "billing_unavailable", message: "当前服务的计费配置不可用，请联系支持人员。"/);
  assert.ok(errorMapping.indexOf('code: "billing_unavailable"') < errorMapping.lastIndexOf('code: "run_failed"'));
  assert.doesNotMatch(reserveBilling + errorMapping, /error\.message/);
});

test("free Agentic rectification turns bypass reservation, completion, and cancellation settlement", async () => {

  // 旧：enum 到 stop_and_review
  // 新：增加 skip_probe；非 message 仍不计费
  // 原因：决策 4，核对跳过走即时结构化动作
  assert.match(
    rectificationRoute,
    /action: z\.enum\(\["opening", "message", "read_only", "answer_choice", "stop_and_review", "skip_probe"\]\)/,
  );
  assert.equal(rectificationRoute.match(/if \(action !== "message"\)/g)?.length, 3);
  // 原值: 从 route.ts 切 reserve / complete / release 三段（release 以 `      };\n\n      try {` 收尾），
  //       各匹配 `if (action !== "message")` 早退与 authorizeUsage / completeUsage / releaseUsage 调用。
  // 新值: 调用 createRectificationRunBilling：非 message 动作三步都直接成功、一次也不碰账务库；
  //       message 动作三步都真的去读账务库（库不可用时 reserve 回 503 billing_unavailable，complete / release 回 false）。
  // 原因: TASK-rectification-code-split-20260926 billing 对象原样搬进 agent-route-billing.ts，原 release 段的
  //       收尾锚点不复存在；直接调用比按锚点切源码更强。
  // feature-pricing.ts imports "server-only", so the adapter runs in a child
  // process with that module mocked (same harness as the other route tests).
  const script = String.raw`
    import { mock } from "node:test";
    mock.module("server-only", { namedExports: {} });
    const { createRectificationRunBilling } = await import("./src/lib/rectification-agentic/v9/agent-route-billing.ts");
    const touched = [];
    const unreachableAccounting = new Proxy({}, {
      get(_target, property) {
        return () => {
          touched.push(String(property));
          throw new Error("billing store unavailable");
        };
      },
    });
    const model = { id: "model-a", configVersion: 1, inputCostMicrousdPerMillion: 0, outputCostMicrousdPerMillion: 0 };
    const billingFor = (action) => createRectificationRunBilling({
      action,
      accounting: unreachableAccounting,
      userId: "user-1",
      caseId: "case-1",
      requestId: "request-1",
      selectedModel: model,
    });
    console.error = () => {};
    console.warn = () => {};
    const free = [];
    for (const action of ["opening", "read_only", "answer_choice", "stop_and_review", "skip_probe"]) {
      const billing = billingFor(action);
      free.push({
        action,
        reserve: await billing.reserve(),
        complete: await billing.complete({ inputTokens: 10, outputTokens: 5, durationMs: 1 }),
        release: await billing.release(),
      });
    }
    const touchedByFree = [...touched];
    const paid = billingFor("message");
    const paidResult = {
      reserve: await paid.reserve(),
      complete: await paid.complete({ inputTokens: 10, outputTokens: 5, durationMs: 1 }),
      release: await paid.release(),
    };
    process.stdout.write("AYANAM_RESULT " + JSON.stringify({ free, touchedByFree, paid: paidResult, touched }) + "\n");
  `;
  const result = spawnSync(process.execPath, [
    "--experimental-test-module-mocks",
    "--import",
    "tsx",
    "--input-type=module",
    "--eval",
    script,
  ], {
    cwd: fileURLToPath(root),
    encoding: "utf8",
    env: { ...process.env, NODE_NO_WARNINGS: "1" },
  });
  assert.equal(result.status, 0, result.stderr || result.stdout);
  const line = result.stdout.split("\n").find((row) => row.startsWith("AYANAM_RESULT "));
  assert.ok(line, result.stdout);
  const probe = JSON.parse(line.slice("AYANAM_RESULT ".length)) as {
    free: Array<{ action: string; reserve: unknown; complete: boolean; release: boolean }>;
    touchedByFree: string[];
    paid: { reserve: unknown; complete: boolean; release: boolean };
    touched: string[];
  };
  for (const turn of probe.free) {
    assert.deepEqual(turn.reserve, { success: true, status: 200 }, turn.action);
    assert.equal(turn.complete, true, turn.action);
    assert.equal(turn.release, true, turn.action);
  }
  assert.deepEqual(probe.touchedByFree, [], "free turns never read or write the billing store");
  assert.deepEqual(probe.paid.reserve, { success: false, reason: "billing_unavailable", status: 503 });
  assert.equal(probe.paid.complete, false);
  assert.equal(probe.paid.release, false);
  assert.deepEqual(probe.touched, ["from", "from", "from"], "each paid step looks up the case-bound reservation first");
  assert.match(rectificationRoute, /authorizeUsage\(/);
  assert.match(rectificationRoute, /completeUsage\(/);
  assert.match(rectificationRoute, /releaseUsage\(/);
});


test("standard consultation resolves and settles the session-pinned model version", () => {
  assert.match(consultRoute, /sessionId: z\.string\(\)\.uuid\(\)/);
  // Former value: select("id,model_id,model_config_version,session_type,messages").
  // First-round session titles need the current title, theme, and chart role.
  // 原值: select includes chart_profile_role but not chart_profile_id or chart_profile_name.
  // 新值: the same select also reads chart_profile_id and chart_profile_name.
  // 原因: ordinary chat resolves the subject from the stored binding, not from chart_profile_role alone.
  assert.match(consultRoute, /select\("id,model_id,model_config_version,session_type,messages,title,theme,chart_profile_id,chart_profile_name,chart_profile_role,context_summary"\)/);
  assert.match(consultRoute, /resolveSessionLanguageModel\(\s*chatSession\.model_id,\s*chatSession\.model_config_version,?\s*\)/);
  assert.match(consultRoute, /actualModelId: selectedModel\.id/);
  assert.match(consultRoute, /modelConfigVersion: selectedModel\.configVersion/);
  // 原值: 守卫 .eq("title", expectedTitle) 用 RPC 前快照，append_consultation_question 已改写标题，更新恒 0 行
  // 新值: shouldGenerate 仍用 RPC 前标题；守卫比较 RPC 后再 select 到的 title
  // 原因: BUG-557，模型标题必须能在刷新前落库
  assert.match(consultRoute, /const expectedTitle = typeof chatSession\.title === "string" \? chatSession\.title : ""/);
  assert.match(consultRoute, /shouldGenerateSessionTitle\(\{\s*title: expectedTitle,/);
  assert.match(consultRoute, /expectedTitle: titleAfterRpc/);
  assert.match(consultRoute, /persistGuardedSessionTitle/);
});

test("standard consultation awaits real usage before durable response settlement", () => {
  assert.doesNotMatch(consultRoute, /recordActualUsage|void usage\.then/);
  assert.doesNotMatch(consultRoute, /inputTokens: 0,[\s\S]*outputTokens: 0,[\s\S]*costMicrousd: 0/);
  assert.match(consultRoute, /async function usagePayload\(usage: Promise<\{ inputTokens\?: number; outputTokens\?: number \}>\)/);
  // 原值 await usage；新值等待咨询与分类 usage 合并；原因：分类成本也必须结算。
  assert.match(consultRoute, /const resolved = await mergeUsage\(\[usage, Promise\.resolve\(classificationUsage\)\]\);/);
  assert.match(consultRoute, /const actualUsage = await usagePayload\(usage\);[\s\S]*p_actual_usage: actualUsage/);
  assert.match(consultRoute, /function mergeUsage\(usages: Promise<Usage>\[\]\): Promise<Usage> \{[\s\S]*Promise\.all\(usages\)/);
  // Former: three agentic first streams each had `usages.push(result.totalUsage)`.
  // New: the three first streams share streamWithOverflowRetry, which pushes the
  // successful first attempt (and the overflow retry under a different name).
  // Reason: context overflow must retry once on the same request.
  assert.equal(consultRoute.match(/usages\.push\(result\.totalUsage\)/g)?.length, 1);
  assert.match(consultRoute, /streamWithOverflowRetry/);
  assert.match(consultRoute, /isContextOverflowError/);
  // Three agentic first streams: public/general, declared-window, and natal.
  // Window and natal each have a contract retry plus an answer retry; general
  // has only an answer retry. Every one of those model calls spends tokens.
  assert.equal(consultRoute.match(/usages\.push\(retried\.totalUsage\)/g)?.length, 5);
  // 原值: /const retryForAnswer = async \(\) => \{/ 三处
  // 新值: /const retryForAnswer = async \(retryHint\?: string\) => \{/ 三处
  // 原因: BUG-1053 删除 compose 后，Pass 4 整篇被拒的重写提示改由 answer retry 携带；三处回答重试仍各计一次 usage
  assert.equal(consultRoute.match(/const retryForAnswer = async \(retryHint\?: string\) => \{/g)?.length, 3);
});

test("standard consultation forwards its stable reservation request as the usage event key", async () => {
  const eventKey = "00000000-0000-4000-8000-000000000002";
  const calls: Record<string, unknown>[] = [];
  const accounting = {
    async rpc(_rpcName: string, args: Record<string, unknown>) {
      calls.push(args);
      return {
        data: { success: true, reservation_id: "00000000-0000-4000-8000-000000000003", credits: 9, error_code: null },
        error: null,
      };
    },
  };
  const usage = { eventKey, actualModelId: "model", inputTokens: 1, outputTokens: 2, costMicrousd: 3, durationMs: 4 };

  await completeUsage(accounting, "00000000-0000-4000-8000-000000000001", eventKey, usage);
  await completeUsage(accounting, "00000000-0000-4000-8000-000000000001", eventKey, usage);

  assert.deepEqual(calls.map((call) => (call.p_actual_usage as { eventKey: string }).eventKey), [eventKey, eventKey]);
  assert.match(consultRoute, /eventKey: requestId,/);
  assert.match(consultRoute, /const actualUsage = await usagePayload\(usage\);[\s\S]*p_actual_usage: actualUsage/);
  assert.doesNotMatch(consultRoute, /eventKey:\s*(?:globalThis\.)?crypto\.randomUUID\(\)/);
});

test("legacy admin packages cannot mutate detached payment_packages", () => {
  assert.doesNotMatch(packagesRoute, /payment_packages|queryAdminRows|insert into|update public/);
  assert.match(packagesRoute, /export function GET\(request: Request\)/);
  assert.match(packagesRoute, /const replacement = "\/api\/admin\/products"/);
  assert.match(packagesRoute, /NextResponse\.redirect\(new URL\(replacement, request\.url\), 308\)/);
  for (const method of ["POST", "PATCH", "DELETE"]) {
    assert.match(packagesRoute, new RegExp(`export function ${method}\\(\\)`));
  }
  assert.match(packagesRoute, /status: 410/);
  assert.match(packagesRoute, /error: "旧套餐写接口已停用，请使用统一商品管理。",[\s\S]*replacement,/);
});