import { describe, expect, it } from "vitest";
import { mkdir, rm, writeFile } from "node:fs/promises";
import { tmpdir } from "node:os";
import { join } from "node:path";
import { resolveDeliverableFile } from "../../src/feishu/fileDelivery.js";

describe("file delivery path resolution", () => {
  it("resolves a repo-root file from a project workspace only when explicitly named", async () => {
    const root = await makeRepo();
    try {
      const workspace = join(root, "examples", "TH-141");
      await writeFile(join(root, "README.md"), "# root readme\n");

      await expect(resolveDeliverableFile("README.md", workspace)).resolves.toEqual({
        path: join(root, "README.md"),
        name: "README.md",
      });
    } finally {
      await rm(root, { recursive: true, force: true });
    }
  });

  it("resolves a bare build filename against workspace/build", async () => {
    const root = await makeRepo();
    try {
      const workspace = join(root, "examples", "TH-141");
      const pdf = join(workspace, "build", "student.pdf");
      await writeFile(pdf, "pdf bytes");

      await expect(resolveDeliverableFile("student.pdf", workspace)).resolves.toEqual({
        path: pdf,
        name: "student.pdf",
      });
    } finally {
      await rm(root, { recursive: true, force: true });
    }
  });

  it("does not infer files from natural-language prompts", async () => {
    const root = await makeRepo();
    try {
      const workspace = join(root, "examples", "TH-141");
      await writeFile(join(workspace, "build", "student.pdf"), "pdf bytes");

      await expect(resolveDeliverableFile("cph build 生成 PDF 给我", workspace)).resolves.toBeNull();
    } finally {
      await rm(root, { recursive: true, force: true });
    }
  });
});

async function makeRepo(): Promise<string> {
  const root = await mkdir(join(tmpdir(), `hub-file-delivery-${Date.now()}-${Math.random().toString(36).slice(2)}`), { recursive: true });
  await mkdir(join(root, ".git"));
  await mkdir(join(root, "examples", "TH-141", "build"), { recursive: true });
  return root;
}