package main
import (
	"fmt"
	"os/exec"
)

func checkPackageExists(pac string) bool {
	command := fmt.Sprintf("pacman -Qqe %s", pac)
	cmd:= exec.Command(command)
	err:=cmd.Run()

	if err != nil {
		return false;
	}
	return true;
}

func installPackage(pac string) {
	fmt.Printf("[PACMAN] Installing `%s`\n", pac)	
}

func removePackage(pac string){
	fmt.Printf("[PACMAN] Removing `%s`\n", pac)	
}


func pacman(m interface{}) error {
	data, ok := m.(map[string]interface{})
	if !ok {
		return fmt.Errorf("expected map[string]interface{}, got %T", m)
	}
	shouldPresent := false
	
	if data["state"] == "present" {
		shouldPresent = true
	} else if data["state"] == "absent"{
		shouldPresent = false
	}
	
	pac := data["name"]

	if checkPackageExists(pac.(string)) {
		if shouldPresent {
			fmt.Printf("[PACMAN] `%s` Exists Skipping\n", pac)			
		} else {
			removePackage(pac.(string))
		}
	} else {
		if shouldPresent {
			installPackage(pac.(string))			
		} else {
			fmt.Printf("[PACMAN] `%s` doesn't exist skipping\n", pac)
		}

	}
	return nil
}