import fs from 'fs'
import path from 'path'

import config from '#application/config'

class Storage {
  private readonly baseDir: string
  private readonly rootDir: string

  constructor() {
    this.rootDir = process.cwd()
    this.baseDir = config.ENV === 'development' ? 'src' : 'dist'
  }

  /**
   * Gets path relative to project root
   */
  public getRootPath(folder: string, ...additionalSegments: string[]): string {
    return path.join(this.rootDir, folder, ...additionalSegments)
  }

  /**
   * Gets path relative to app directory (src/dist)
   */
  public getAppPath(folder: string, ...additionalSegments: string[]): string {
    return path.join(this.rootDir, this.baseDir, folder, ...additionalSegments)
  }

  /**
   * Gets path relative to public directory
   */
  public getPublicPath(folder: string, ...additionalSegments: string[]): string {
    return path.join(this.rootDir, 'public', folder, ...additionalSegments)
  }

  /**
   * Checks if a path exists
   * @throws Error if path is empty or invalid
   */
  public doesPathExist(pathToCheck: string): boolean {
    if (!pathToCheck) {
      throw new Error('Path cannot be empty')
    }

    try {
      fs.accessSync(pathToCheck, fs.constants.F_OK)
      return true
    } catch (e) {
      return false
    }
  }

  /**
   * Creates a directory and any necessary parent directories
   * @throws Error if directory creation fails
   */
  public createDir(dirPath: string): void {
    if (!dirPath) {
      throw new Error('Directory path cannot be empty')
    }

    try {
      fs.mkdirSync(dirPath, { recursive: true })
    } catch (error) {
      const typedError = error as Error
      throw new Error(`Failed to create directory: ${typedError.message}`)
    }
  }
}

export default new Storage()