/**
 * Dependency checker for Timbers Toolbox plugin health tools.
 * Checks availability of optional dependencies and reports status.
 */

export type DependencyStatus = "available" | "unavailable" | "unknown";

interface DependencyMap {
  [key: string]: DependencyStatus;
}

/**
 * Check the availability of all plugin dependencies.
 * Returns a map of dependency name → status.
 */
export async function checkDependencies(): Promise<DependencyMap> {
  const deps: DependencyMap = {};

  // Check optional npm packages by attempting to resolve them
  const optionalDeps = [
    "simple-git",
    "better-sqlite3",
    "pdf-parse",
    "mammoth",
    "duck-duck-scrape",
    "html-to-text",
    "cheerio",
    "epub2",
    "tesseract.js",
    "node-notifier",
    "open",
    "puppeteer",
  ];

  for (const dep of optionalDeps) {
    try {
      await require.resolve(dep);
      deps[dep] = "available";
    } catch {
      deps[dep] = "unavailable";
    }
  }

  // Check system tools
  const systemTools = ["python", "git", "ffmpeg", "ffprobe", "deno", "gh"];
  for (const tool of systemTools) {
    try {
      const { execSync } = require("child_process");
      execSync(`${tool} --version`, { stdio: "ignore" });
      deps[tool] = "available";
    } catch {
      deps[tool] = "unavailable";
    }
  }

  return deps;
}

/**
 * Format dependency status for display in plugin_status tool.
 */
export function formatDependencyStatus(deps: DependencyMap): string {
  const available = Object.entries(deps)
    .filter(([, status]) => status === "available")
    .map(([name]) => name);

  const unavailable = Object.entries(deps)
    .filter(([, status]) => status === "unavailable")
    .map(([name]) => name);

  const lines: string[] = [];

  if (available.length > 0) {
    lines.push(`Available (${available.length}): ${available.join(", ")}`);
  }

  if (unavailable.length > 0) {
    lines.push(`Unavailable (${unavailable.length}): ${unavailable.join(", ")}`);
  }

  return lines.join("\n") || "No dependencies to check.";
}

/**
 * Dependency checker for Timbers Toolbox plugin health tools.
 * Checks availability of optional dependencies and reports status.
 */

export type DependencyStatus = "available" | "unavailable" | "unknown";

interface DependencyMap {
  [key: string]: DependencyStatus;
}

/**
 * Check the availability of all plugin dependencies.
 * Returns a map of dependency name → status.
 */
export async function checkDependencies(): Promise<DependencyMap> {
  const deps: DependencyMap = {};

  // Check optional npm packages by attempting to resolve them
  const optionalDeps = [
    "simple-git",
    "better-sqlite3",
    "pdf-parse",
    "mammoth",
    "duck-duck-scrape",
    "html-to-text",
    "cheerio",
    "epub2",
    "tesseract.js",
    "node-notifier",
    "open",
    "puppeteer",
  ];

  for (const dep of optionalDeps) {
    try {
      await require.resolve(dep);
      deps[dep] = "available";
    } catch {
      deps[dep] = "unavailable";
    }
  }

  // Check system tools
  const systemTools = ["python", "git", "ffmpeg", "ffprobe", "deno", "gh"];
  for (const tool of systemTools) {
    try {
      const { execSync } = require("child_process");
      execSync(`${tool} --version`, { stdio: "ignore" });
      deps[tool] = "available";
    } catch {
      deps[tool] = "unavailable";
    }
  }

  return deps;
}

/**
 * Format dependency status for display in plugin_status tool.
 */
export function formatDependencyStatus(deps: DependencyMap): string {
  const available = Object.entries(deps)
    .filter(([, status]) => status === "available")
    .map(([name]) => name);

  const unavailable = Object.entries(deps)
    .filter(([, status]) => status === "unavailable")
    .map(([name]) => name);

  const lines: string[] = [];

  if (available.length > 0) {
    lines.push(`Available (${available.length}): ${available.join(", ")}`);
  }

  if (unavailable.length > 0) {
    lines.push(`Unavailable (${unavailable.length}): ${unavailable.join(", ")}`);
  }

  return lines.join("\n") || "No dependencies to check.";
}