import { existsSync, mkdirSync, readFileSync, unlinkSync, writeFileSync } from "fs";
import { join } from "path";
import { readdirSync } from "fs";

export abstract class FileSystemHelper {
  static createFolder(...args: string[]) {
    const exportPath = this.formatPath(...args);
    if (!existsSync(exportPath)) {
      mkdirSync(exportPath, { recursive: true });
    }
  }

  static readFile(...filePath: string[]) {
    return readFileSync(this.formatPath(...filePath), "utf8");
  }

  static readFileasBase64(...filePath: string[]) {
    return readFileSync(this.formatPath(...filePath), "base64");
  }

  static readTemplateFile(filePath: string) {
    return readFileSync(process.cwd() + filePath, "utf8");
  }

  static writeFile(filePath: string, filename: string, file: any) {
    this.createFolder(filePath);
    let path = this.formatPath(filePath, filename);
    writeFileSync(path, file);
  }

  static formatPath(...args: string[]) {
    return join(process.cwd(), "files", ...args);
  }

  static normalizePath(...args: string[]) {
    return join(...args);
  }

  static getFilesInDirectory(directoryPath: string, filetype?: string): string[] {
    const fullPath = this.formatPath(directoryPath);
    if (!existsSync(fullPath)) {
      return [];
    }
    return readdirSync(fullPath, { withFileTypes: true })
      .filter((dirent) => !dirent.isDirectory() && (!filetype || dirent.name.endsWith(filetype)))
      .map((dirent) => dirent.name);
  }

  static clearDirectoryByFiletype(directoryPath: string, filetype: string) {
    const fullPath = this.formatPath(directoryPath);
    if (!existsSync(fullPath)) {
      return;
    }
    readdirSync(fullPath, { withFileTypes: true })
      .filter((dirent) => !dirent.isDirectory() && dirent.name.endsWith(filetype))
      .forEach((dirent) => {
        const filePath = join(fullPath, dirent.name);
        unlinkSync(filePath);
      });
  }
}