import { readFileSync, existsSync } from "node:fs";
import { resolve } from "node:path";
import { execSync } from "node:child_process";
import { describe, it, expect } from "vitest";

const REPO_ROOT = execSync("git rev-parse --show-toplevel", { encoding: "utf-8" }).trim();
const DOCS_ROOT = resolve(REPO_ROOT, "docs/integrations");

const INTEGRATION_DOCS = [
  {
    file: "cursor.md",
    rootKey: "mcpServers",
    configPath: ".cursor/mcp.json",
  },
  {
    file: "vscode.md",
    rootKey: "servers", // VS Code uses different root key!
    configPath: ".vscode/mcp.json",
  },
  {
    file: "windsurf.md",
    rootKey: "mcpServers",
    configPath: "~/.codeium/windsurf/mcp_config.json",
  },
  {
    file: "cline.md",
    rootKey: "mcpServers",
    configPath: "cline_mcp_settings.json",
  },
];

for (const doc of INTEGRATION_DOCS) {
  describe(`${doc.file}`, () => {
    const filePath = resolve(DOCS_ROOT, doc.file);

    it("exists", () => {
      expect(existsSync(filePath)).toBe(true);
    });

    it("has 3-section structure (Prerequisites, Configuration, Verify)", () => {
      const content = readFileSync(filePath, "utf-8");
      expect(content).toContain("## Prerequisites");
      expect(content).toContain("## Configuration");
      expect(content).toContain("## Verify It Works");
    });

    it(`uses correct root key "${doc.rootKey}"`, () => {
      const content = readFileSync(filePath, "utf-8");
      expect(content).toContain(`"${doc.rootKey}"`);
    });

    it("references fathom-token-mcp", () => {
      const content = readFileSync(filePath, "utf-8");
      expect(content).toContain("fathom-token-mcp@latest");
    });

    it("contains copy-pasteable JSON config block", () => {
      const content = readFileSync(filePath, "utf-8");
      expect(content).toContain("```json");
      expect(content).toContain('"fathom"');
    });

    it(`mentions config file path ${doc.configPath}`, () => {
      const content = readFileSync(filePath, "utf-8");
      expect(content).toContain(doc.configPath);
    });
  });
}