Added missing dependency warning

README.md

@@ -13,6 +13,7 @@ Stormfetch is still in beta and distro compatibility is limited. If you would li
 - Download `go` from your package manager or from the go website
 - Download `make` from your package manager
 - (Optional) Download `xorg-xhost` from your package manager to display DE/WM and monitor information
+- (Optional) Download `xorg-xdpyinfo` from your package manager to display Screen Resolution
 - (Optional) Download `lshw` from your package manager to display GPU information
 - Run the following command to compile the project
 ```

config/config.yaml

@@ -1,2 +1,3 @@
 distro_ascii: auto
 fetch_script: auto
+dependency_warning: true

main.go

@@ -16,8 +16,9 @@ var fetchScriptPath = ""
 var config = StormfetchConfig{}
 
 type StormfetchConfig struct {
-	Ascii       string `yaml:"distro_ascii"`
-	FetchScript string `yaml:"fetch_script"`
+	Ascii             string `yaml:"distro_ascii"`
+	FetchScript       string `yaml:"fetch_script"`
+	DependencyWarning bool   `yaml:"dependency_warning"`
 }
 
 type DistroInfo struct {
@@ -67,6 +68,23 @@ func readConfig() {
 	} else {
 		log.Fatalf("Fetch script file not found: %s", err.Error())
 	}
+	// Show Dependency warning if enabled
+	if config.DependencyWarning {
+		dependencies := []string{"lshw", "xhost", "xdpyinfo"}
+		var missing []string
+		for _, depend := range dependencies {
+			if _, err := os.Stat(path.Join("/usr/bin/", depend)); err != nil {
+				missing = append(missing, depend)
+			}
+		}
+		if len(missing) != 0 {
+			fmt.Println("[WARNING] Stormfetch functionality may be limited due to the following dependencies not being installed:")
+			for _, depend := range missing {
+				fmt.Println(depend)
+			}
+			fmt.Println("You can disable this warning through your stormfetch config")
+		}
+	}
 	//Execute fetch script
 	cmd := exec.Command("/bin/bash", fetchScriptPath)
 	cmd.Dir = path.Dir(fetchScriptPath)