import Fastify from "fastify";
import fastifyMultipart from "@fastify/multipart";
import JSZip from "jszip";
import { mkdtempSync, rmSync } from "node:fs";
import { tmpdir } from "node:os";
import { join } from "node:path";
import { randomUUID } from "node:crypto";
import { afterEach, describe, expect, it } from "vitest";

import { registerAnalysisRoutes } from "../routes/analysis.js";
import type { DetectedMode, ItemRow, JobRow, Store } from "../queue/store.js";

function now() {
  return Date.now();
}

function createFakeStore(): Store {
  const jobs = new Map<string, JobRow>();
  const items = new Map<string, ItemRow>();

  return {
    close() {},
    createJob(optionsSnapshot: object) {
      const ts = now();
      const job: JobRow = {
        id: randomUUID(),
        status: "pending",
        options_snapshot: JSON.stringify(optionsSnapshot),
        created_at: ts,
        updated_at: ts,
      };
      jobs.set(job.id, job);
      return job;
    },
    getJob(id: string) {
      return jobs.get(id) ?? null;
    },
    setJobStatus(id, status) {
      const job = jobs.get(id);
      if (job) jobs.set(id, { ...job, status, updated_at: now() });
    },
    updateJobOptions(id, optionsSnapshot) {
      const job = jobs.get(id);
      if (job) {
        jobs.set(id, {
          ...job,
          options_snapshot: JSON.stringify(optionsSnapshot),
          updated_at: now(),
        });
      }
    },
    listResumableJobs() {
      return [];
    },
    recoverInterruptedJob() {},
    createItem(input: {
      jobId: string;
      ord: number;
      filename: string;
      uploadPath: string;
      detectedMode: DetectedMode;
    }) {
      const ts = now();
      const item: ItemRow = {
        id: randomUUID(),
        job_id: input.jobId,
        ord: input.ord,
        filename: input.filename,
        upload_path: input.uploadPath,
        detected_mode: input.detectedMode,
        status: "queued",
        evidence_path: null,
        task_package_path: null,
        judge_result_path: null,
        export_zip_path: null,
        error_preview: null,
        error_details_path: null,
        attempt_count: 0,
        last_stage: null,
        created_at: ts,
        updated_at: ts,
      };
      items.set(item.id, item);
      return item;
    },
    getItem(id) {
      return items.get(id) ?? null;
    },
    listItemsByJob(jobId) {
      return [...items.values()]
        .filter((item) => item.job_id === jobId)
        .sort((a, b) => a.ord - b.ord);
    },
    setItemStatus(id, status, errorPreview, meta) {
      const item = items.get(id);
      if (item) {
        items.set(id, {
          ...item,
          status,
          error_preview: errorPreview ?? item.error_preview,
          last_stage: meta?.lastStage ?? item.last_stage,
          error_details_path: meta?.errorDetailsPath ?? item.error_details_path,
          updated_at: now(),
        });
      }
    },
    setItemPaths(id, paths) {
      const item = items.get(id);
      if (item) {
        items.set(id, {
          ...item,
          evidence_path: paths.evidencePath ?? item.evidence_path,
          task_package_path: paths.taskPackagePath ?? item.task_package_path,
          judge_result_path: paths.judgeResultPath ?? item.judge_result_path,
          export_zip_path: paths.exportZipPath ?? item.export_zip_path,
          updated_at: now(),
        });
      }
    },
    takeNextQueuedItem() {
      return [...items.values()].find((item) => item.status === "queued") ?? null;
    },
    resetItemForRetry(id) {
      const item = items.get(id);
      if (item) items.set(id, { ...item, status: "queued", updated_at: now() });
    },
  };
}

async function buildApiLookingZip(): Promise<Buffer> {
  const zip = new JSZip();
  zip.file("network.json", JSON.stringify([{ url: "https://example.test/api" }]));
  return zip.generateAsync({ type: "nodebuffer" });
}

function multipartFileThenRequestedMode(file: Buffer) {
  const boundary = "----rl-auto-test-" + randomUUID();
  const payload = Buffer.concat([
    Buffer.from(
      `--${boundary}\r\n` +
        `Content-Disposition: form-data; name="files"; filename="api-looking.zip"\r\n` +
        "Content-Type: application/zip\r\n\r\n",
    ),
    file,
    Buffer.from(
      `\r\n--${boundary}\r\n` +
        'Content-Disposition: form-data; name="requestedMode"\r\n\r\n' +
        `mcp\r\n` +
        `--${boundary}--\r\n`,
    ),
  ]);
  return {
    payload,
    contentType: `multipart/form-data; boundary=${boundary}`,
  };
}

describe("analysis upload requestedMode", () => {
  let tmpRoot: string | null = null;

  afterEach(() => {
    if (tmpRoot) rmSync(tmpRoot, { recursive: true, force: true });
    tmpRoot = null;
  });

  it("uses requestedMode for every uploaded file even when the field arrives after files", async () => {
    tmpRoot = mkdtempSync(join(tmpdir(), "rl-auto-upload-mode-"));
    const app = Fastify();
    await app.register(fastifyMultipart, {
      limits: { fileSize: 10 * 1024 * 1024, files: 10 },
    });
    await registerAnalysisRoutes(app, {
      store: createFakeStore(),
      config: {
        uploadDir: tmpRoot,
        maxBatchFiles: 10,
        maxUploadMB: 10,
      } as any,
      runner: {} as any,
    });

    const { payload, contentType } = multipartFileThenRequestedMode(
      await buildApiLookingZip(),
    );
    const res = await app.inject({
      method: "POST",
      url: "/api/analysis/jobs",
      headers: { "content-type": contentType },
      payload,
    });

    await app.close();

    expect(res.statusCode).toBe(200);
    expect(res.json()).toMatchObject({
      code: 0,
      data: {
        items: [expect.objectContaining({ detectedMode: "mcp" })],
      },
    });
  });

  it("clamps oversized numeric options when starting a job", async () => {
    tmpRoot = mkdtempSync(join(tmpdir(), "rl-auto-options-"));
    const store = createFakeStore();
    const job = await store.createJob({});
    const scheduledJobs: string[] = [];
    const app = Fastify();
    await registerAnalysisRoutes(app, {
      store,
      config: {
        uploadDir: tmpRoot,
        maxBatchFiles: 10,
        maxUploadMB: 10,
      } as any,
      runner: {
        scheduleJob(id: string) {
          scheduledJobs.push(id);
        },
        cancelJob() {},
      } as any,
    });

    const res = await app.inject({
      method: "POST",
      url: `/api/analysis/jobs/${job.id}/start`,
      headers: { "content-type": "application/json" },
      payload: {
        optionsSnapshot: {
          requestedMode: "api",
          concurrency: 99,
          temperature: 9,
          topP: 9,
          maxTokens: 999999,
        },
      },
    });

    await app.close();

    expect(res.statusCode).toBe(200);
    expect(scheduledJobs).toEqual([job.id]);
    expect(JSON.parse((await store.getJob(job.id))?.options_snapshot || "{}")).toMatchObject({
      concurrency: 8,
      temperature: 2,
      topP: 1,
      maxTokens: 131072,
    });
  });
});