import os from "node:os";
import path from "node:path";
import { promises as fs } from "node:fs";
import { afterEach, describe, expect, it } from "vitest";
import {
  discoverProjectWorkspaceSkillDirectories,
  findMissingLocalSkillIds,
  parseSkillImportSourceInput,
  readLocalSkillImportFromDirectory,
} from "../services/company-skills.js";

const cleanupDirs = new Set<string>();

afterEach(async () => {
  await Promise.all(Array.from(cleanupDirs, (dir) => fs.rm(dir, { recursive: true, force: true })));
  cleanupDirs.clear();
});

async function makeTempDir(prefix: string) {
  const dir = await fs.mkdtemp(path.join(os.tmpdir(), prefix));
  cleanupDirs.add(dir);
  return dir;
}

async function writeSkillDir(skillDir: string, name: string) {
  await fs.mkdir(skillDir, { recursive: true });
  await fs.writeFile(path.join(skillDir, "SKILL.md"), `---\nname: ${name}\n---\n\n# ${name}\n`, "utf8");
}

describe("company skill import source parsing", () => {
  it("parses a skills.sh command without executing shell input", () => {
    const parsed = parseSkillImportSourceInput(
      "npx skills add https://github.com/vercel-labs/skills --skill find-skills",
    );

    expect(parsed.resolvedSource).toBe("https://github.com/vercel-labs/skills");
    expect(parsed.requestedSkillSlug).toBe("find-skills");
    expect(parsed.originalSkillsShUrl).toBeNull();
    expect(parsed.warnings).toEqual([]);
  });

  it("parses owner/repo/skill shorthand as skills.sh-managed", () => {
    const parsed = parseSkillImportSourceInput("vercel-labs/skills/find-skills");

    expect(parsed.resolvedSource).toBe("https://github.com/vercel-labs/skills");
    expect(parsed.requestedSkillSlug).toBe("find-skills");
    expect(parsed.originalSkillsShUrl).toBe("https://skills.sh/vercel-labs/skills/find-skills");
  });

  it("resolves skills.sh URL with org/repo/skill to GitHub repo and preserves original URL", () => {
    const parsed = parseSkillImportSourceInput(
      "https://skills.sh/google-labs-code/stitch-skills/design-md",
    );

    expect(parsed.resolvedSource).toBe("https://github.com/google-labs-code/stitch-skills");
    expect(parsed.requestedSkillSlug).toBe("design-md");
    expect(parsed.originalSkillsShUrl).toBe("https://skills.sh/google-labs-code/stitch-skills/design-md");
  });

  it("resolves skills.sh URL with org/repo (no skill) to GitHub repo and preserves original URL", () => {
    const parsed = parseSkillImportSourceInput(
      "https://skills.sh/vercel-labs/skills",
    );

    expect(parsed.resolvedSource).toBe("https://github.com/vercel-labs/skills");
    expect(parsed.requestedSkillSlug).toBeNull();
    expect(parsed.originalSkillsShUrl).toBe("https://skills.sh/vercel-labs/skills");
  });

  it("parses skills.sh commands whose requested skill differs from the folder name", () => {
    const parsed = parseSkillImportSourceInput(
      "npx skills add https://github.com/remotion-dev/skills --skill remotion-best-practices",
    );

    expect(parsed.resolvedSource).toBe("https://github.com/remotion-dev/skills");
    expect(parsed.requestedSkillSlug).toBe("remotion-best-practices");
    expect(parsed.originalSkillsShUrl).toBeNull();
  });

  it("does not set originalSkillsShUrl for owner/repo shorthand", () => {
    const parsed = parseSkillImportSourceInput("vercel-labs/skills");

    expect(parsed.resolvedSource).toBe("https://github.com/vercel-labs/skills");
    expect(parsed.originalSkillsShUrl).toBeNull();
  });
});

describe("project workspace skill discovery", () => {
  it("finds bounded skill roots under supported workspace paths", async () => {
    const workspace = await makeTempDir("paperclip-skill-workspace-");
    await writeSkillDir(workspace, "Workspace Root");
    await writeSkillDir(path.join(workspace, "skills", "find-skills"), "Find Skills");
    await writeSkillDir(path.join(workspace, ".agents", "skills", "release"), "Release");
    await writeSkillDir(path.join(workspace, "skills", ".system", "paperclip"), "Paperclip");
    await fs.writeFile(path.join(workspace, "README.md"), "# ignore\n", "utf8");

    const discovered = await discoverProjectWorkspaceSkillDirectories({
      projectId: "11111111-1111-1111-1111-111111111111",
      projectName: "Repo",
      workspaceId: "22222222-2222-2222-2222-222222222222",
      workspaceName: "Main",
      workspaceCwd: workspace,
    });

    expect(discovered).toEqual([
      { skillDir: path.resolve(workspace), inventoryMode: "project_root" },
      { skillDir: path.resolve(workspace, ".agents", "skills", "release"), inventoryMode: "full" },
      { skillDir: path.resolve(workspace, "skills", ".system", "paperclip"), inventoryMode: "full" },
      { skillDir: path.resolve(workspace, "skills", "find-skills"), inventoryMode: "full" },
    ]);
  });

  it("limits root SKILL.md imports to skill-related support folders", async () => {
    const workspace = await makeTempDir("paperclip-root-skill-");
    await writeSkillDir(workspace, "Workspace Skill");
    await fs.mkdir(path.join(workspace, "references"), { recursive: true });
    await fs.mkdir(path.join(workspace, "scripts"), { recursive: true });
    await fs.mkdir(path.join(workspace, "assets"), { recursive: true });
    await fs.mkdir(path.join(workspace, "src"), { recursive: true });
    await fs.writeFile(path.join(workspace, "references", "checklist.md"), "# Checklist\n", "utf8");
    await fs.writeFile(path.join(workspace, "scripts", "run.sh"), "echo ok\n", "utf8");
    await fs.writeFile(path.join(workspace, "assets", "logo.svg"), "<svg />\n", "utf8");
    await fs.writeFile(path.join(workspace, "README.md"), "# Repo\n", "utf8");
    await fs.writeFile(path.join(workspace, "src", "index.ts"), "export {};\n", "utf8");

    const imported = await readLocalSkillImportFromDirectory(
      "33333333-3333-4333-8333-333333333333",
      workspace,
      { inventoryMode: "project_root", metadata: { sourceKind: "project_scan" } },
    );

    expect(new Set(imported.fileInventory.map((entry) => entry.path))).toEqual(new Set([
      "assets/logo.svg",
      "references/checklist.md",
      "scripts/run.sh",
      "SKILL.md",
    ]));
    expect(imported.fileInventory.map((entry) => entry.kind)).toContain("script");
    expect(imported.metadata?.sourceKind).toBe("project_scan");
  });
});

describe("missing local skill reconciliation", () => {
  it("flags local-path skills whose directory was removed", async () => {
    const workspace = await makeTempDir("paperclip-missing-skill-dir-");
    const skillDir = path.join(workspace, "skills", "ghost");
    await writeSkillDir(skillDir, "Ghost");
    await fs.rm(skillDir, { recursive: true, force: true });

    const missingIds = await findMissingLocalSkillIds([
      {
        id: "skill-1",
        sourceType: "local_path",
        sourceLocator: skillDir,
      },
      {
        id: "skill-2",
        sourceType: "github",
        sourceLocator: "https://github.com/vercel-labs/agent-browser",
      },
    ]);

    expect(missingIds).toEqual(["skill-1"]);
  });

  it("flags local-path skills whose SKILL.md file was removed", async () => {
    const workspace = await makeTempDir("paperclip-missing-skill-file-");
    const skillDir = path.join(workspace, "skills", "ghost");
    await writeSkillDir(skillDir, "Ghost");
    await fs.rm(path.join(skillDir, "SKILL.md"), { force: true });

    const missingIds = await findMissingLocalSkillIds([
      {
        id: "skill-1",
        sourceType: "local_path",
        sourceLocator: skillDir,
      },
    ]);

    expect(missingIds).toEqual(["skill-1"]);
  });
});