<?php

namespace traits;

trait packages {
    
    private static function call_pkg_mgt(string $pkg, string $method, string $param="") {
        $call = "\\package_managers\\{$pkg}::{$method}";
        if (!class_exists($call)) {
            throw new \Exception('A class with the name of '. $call. 'could not be found');
        }
        
        return (! empty($param)) ? $call($param) : $call();
    }
    
    private static function get_package_manager(string $os): string|false {
        $linux_package_managers = [
            'ubuntu' => 'apt',
            'debian' => 'apt_get',
            'fedora' => 'dnf',
            'centos' => 'yum',
            'arch linux' => 'pacman',
            'arch' => 'pacman',
            'opensuse' => 'zypper',
            'gentoo' => 'emerge',
            'slackware' => 'slackpkg',
            'rhel' => 'yum',
            'mageia' => 'dnf',
            'alpine linux' => 'apk',
            'alpine' => 'apk',
            'manjaro' => 'pacman',
            'linux mint' => 'apt',
            'elementary os' => 'apt',
            'solus' => 'eopkg',
            'void linux' => 'xbps_install',
            'mx linux' => 'apt',
            'kali linux' => 'apt',
            'pclinuxos' => 'apt_get',
            'funtoo' => 'emerge',
            'fedora silverblue' => 'rpm_ostree',
            // Add more distributions and their package managers as needed
        ];
        $selected_distribution = strtolower($os);
        if (isset($linux_package_managers[$selected_distribution])) {
            return $linux_package_managers[$selected_distribution];
        }
        return false;
    }
  
  private static function find_package_managers($pkg_mgr): string|false {
      $list = [
            'nala'=>'/usr/bin/nala', 
            'apt'=>'/usr/bin/apt',
            'apt_get'=>'/usr/bin/apt-get',
            'dnf'=>'/usr/bin/dnf',
            'yum'=>'/usr/bin/yum',
            'pacman'=>'/usr/bin/pacman',
            'zypper'=>'/usr/bin/zypper',
            'flatpak'=>'/usr/bin/flatpak',        
            'snap'=>'/usr/bin/snap',            
      ];
      foreach($list as $name=>$app) {
        if (is_executable($app)) {
           return $name; 
        }
      }
      return false;
  }  
    
  private static function get_OS_and_package_manager($pkg_mgr=false, $user_os = false) {
    $pkg_name = self::find_package_managers($pkg_mgr);
    if ($pkg_name !== false) {
        return $pkg_name;
    }
    $os = $GLOBALS['os'];
    $detected_os = $os['id'] ?? "ubuntu";
    $selected_OS = ($user_os !== false) ? $user_os : $detected_os;
    return self::get_package_manager($selected_OS);
  } 
  
  public static function is_installed(string $prog, $pkg_mgr=false, $user_os = false) {
     $pkg = self::get_OS_and_package_manager($pkg_mgr, $user_os);
     if ($pkg === false) {
         return false;
     }
     $namespaced = "\\package_managers\\{$pkg}::is_installed";
     return $namespaced($prog);
  }
    
  public static function upgrade(string $prog, $pkg_mgr=false, $user_os = false) {
     $pkg = self::get_OS_and_package_manager($pkg_mgr, $user_os);
     if ($pkg === false) {
         return false;
     }
     $namespaced = "\\package_managers\\{$pkg}::upgrade";
     return $namespaced($prog);
  }

  public static function install(string $prog, $pkg_mgr=false, $user_os = false) {
     $pkg = self::get_OS_and_package_manager($pkg_mgr, $user_os);
     if ($pkg === false) {
         return false;
     }
     $namespaced = "\\package_managers\\{$pkg}::install";
     return $namespaced($prog);
  }

  public static function purge(string $prog, $pkg_mgr=false, $user_os = false) {
     $pkg = self::get_OS_and_package_manager($pkg_mgr, $user_os);
     if ($pkg === false) {
         return false;
     }
     $namespaced = "\\package_managers\\{$pkg}::purge";
     return $namespaced($prog);
   
  }

  public static function uninstall(string $prog, $pkg_mgr=false, $user_os = false) {
     $pkg = self::get_OS_and_package_manager($pkg_mgr, $user_os);
     if ($pkg === false) {
         return false;
     }
     $namespaced = "\\package_managers\\{$pkg}::uninstall";
     return $namespaced($prog);
   
  }

  public static function add_repo(string $repo, $pkg_mgr=false, $user_os = false) {
     $pkg = self::get_OS_and_package_manager($pkg_mgr, $user_os);
     if ($pkg === false) {
         return false;
     }
     $namespaced = "\\package_managers\\{$pkg}::add_repo";
     return $namespaced($repo);
    
  }

  public static function update($pkg_mgr=false, $user_os = false) {
     $pkg = self::get_OS_and_package_manager($pkg_mgr, $user_os);
     if ($pkg === false) {
         return false;
     }
     $namespaced = "\\package_managers\\{$pkg}::update";
     return $namespaced();
    
  }

  public static function full_update($pkg_mgr=false, $user_os = false) {
     $pkg = self::get_OS_and_package_manager($pkg_mgr, $user_os);
     if ($pkg === false) {
         return false;
     }
     $namespaced = "\\package_managers\\{$pkg}::full_update";
     return $namespaced();
  }
  
  // Have a Backup!!
  public static function full_system_upgrade($pkg_mgr=false, $user_os = false) {
     $pkg = self::get_OS_and_package_manager($pkg_mgr, $user_os);
     if ($pkg === false) {
         return false;
     }
     $namespaced = "\\package_managers\\{$pkg}::full_system_upgrade";
     return $namespaced();
  } 
    
    
}

/* 
osInfo[/etc/redhat-release]="yum install"
osInfo[/etc/arch-release]="pacman -S"
osInfo[/etc/gentoo-release]="emerge"
osInfo[/etc/SuSE-release]="zypper install"
osInfo[/etc/debian_version]="apt install"
osInfo[/etc/alpine-release]="apk add --no-cache"
*/