Refactor project structure

cmd/images.go

@@ -0,0 +1,40 @@
+package cmd
+
+import (
+	"encoding/json"
+	"fmt"
+	"gitea.stuzer.link/stuzer05/docker-registry-manager/internal/app"
+	"net/http"
+)
+
+func RegistryImages(app *app.App) {
+	type catalog struct {
+		Repositories []string `json:"repositories"`
+	}
+
+	resp, err := http.Get(app.RegistryURL + "/v2/_catalog")
+	if err != nil {
+		fmt.Println("Error fetching images:", err)
+		return
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode == http.StatusNotFound {
+		fmt.Println("No images found in the registry.")
+		return
+	}
+
+	var cat catalog
+	if err := json.NewDecoder(resp.Body).Decode(&cat); err != nil {
+		fmt.Println("Error decoding response:", err)
+		return
+	}
+
+	if len(cat.Repositories) == 0 {
+		fmt.Println("No images found in the registry.")
+	} else {
+		for _, img := range cat.Repositories {
+			fmt.Println(img)
+		}
+	}
+}

cmd/push.go

@@ -0,0 +1,22 @@
+package cmd
+
+import (
+	"fmt"
+	"gitea.stuzer.link/stuzer05/docker-registry-manager/internal/app"
+	"os"
+	"os/exec"
+	"strings"
+)
+
+func RegistryPush(app *app.App, imageName string) {
+	if !strings.HasPrefix(imageName, app.RegistryName) {
+		imageName = app.RegistryName + "/" + imageName
+	}
+
+	cmd := exec.Command("docker", "push", imageName)
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	if err := cmd.Run(); err != nil {
+		fmt.Println("Error pushing image:", err)
+	}
+}

cmd/rm.go

@@ -0,0 +1,101 @@
+package cmd
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"gitea.stuzer.link/stuzer05/docker-registry-manager/internal/app"
+	"net/http"
+	"strings"
+)
+
+func RegistryRm(app *app.App, imageArg string) {
+	parts := strings.SplitN(imageArg, ":", 2)
+	imageName := parts[0]
+	tag := ""
+	if len(parts) > 1 {
+		tag = parts[1]
+	}
+
+	if tag == "" {
+		deleteImageByName(app, imageName)
+	} else {
+		deleteImageByTag(app, imageName, tag)
+	}
+}
+
+func deleteImageByName(app *app.App, imageName string) {
+	type tagList struct {
+		Tags []string `json:"tags"`
+	}
+
+	resp, err := http.Get(fmt.Sprintf("%s/v2/%s/tags/list", app.RegistryURL, imageName))
+	if err != nil {
+		fmt.Println("Error fetching tags:", err)
+		return
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode == http.StatusNotFound {
+		fmt.Printf("Error: Image '%s' not found in the registry.\n", imageName)
+		return
+	}
+
+	var tl tagList
+	if err := json.NewDecoder(resp.Body).Decode(&tl); err != nil {
+		fmt.Println("Error decoding response:", err)
+		return
+	}
+
+	for _, tag := range tl.Tags {
+		deleteImageByTag(app, imageName, tag)
+	}
+}
+
+func deleteImageByTag(app *app.App, imageName, tag string) {
+	client := &http.Client{}
+
+	req, err := http.NewRequest("HEAD", fmt.Sprintf("%s/v2/%s/manifests/%s", app.RegistryURL, imageName, tag), nil)
+	if err != nil {
+		fmt.Println("Error creating request:", err)
+		return
+	}
+	req.Header.Set("Accept", "application/vnd.docker.distribution.manifest.v2+json")
+
+	resp, err := client.Do(req)
+	if err != nil {
+		fmt.Println("Error fetching manifest:", err)
+		return
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode == http.StatusNotFound {
+		fmt.Printf("Error: Image '%s:%s' not found in the registry.\n", imageName, tag)
+		return
+	}
+
+	digest := resp.Header.Get("Docker-Content-Digest")
+
+	req, err = http.NewRequest("DELETE", fmt.Sprintf("%s/v2/%s/manifests/%s", app.RegistryURL, imageName, digest), nil)
+	if err != nil {
+		fmt.Println("Error creating delete request:", err)
+		return
+	}
+
+	// Join username and password for Basic Auth
+	registryCredentials := app.RegistryUsername + ":" + app.RegistryPassword
+	req.Header.Set("Authorization", "Basic "+base64.StdEncoding.EncodeToString([]byte(registryCredentials)))
+
+	resp, err = client.Do(req)
+	if err != nil {
+		fmt.Println("Error deleting image:", err)
+		return
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode == http.StatusAccepted {
+		fmt.Printf("Deleted image: %s:%s\n", imageName, tag)
+	} else {
+		fmt.Printf("Failed to delete image: %s:%s (status code: %d)\n", imageName, tag, resp.StatusCode)
+	}
+}

cmd/tag.go

@@ -0,0 +1,22 @@
+package cmd
+
+import (
+	"fmt"
+	"gitea.stuzer.link/stuzer05/docker-registry-manager/internal/app"
+	"os"
+	"os/exec"
+	"strings"
+)
+
+func RegistryTag(app *app.App, sourceImage, targetImage string) {
+	if !strings.HasPrefix(targetImage, app.RegistryName) {
+		targetImage = app.RegistryName + "/" + targetImage
+	}
+
+	cmd := exec.Command("docker", "tag", sourceImage, targetImage)
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	if err := cmd.Run(); err != nil {
+		fmt.Println("Error tagging image:", err)
+	}
+}

cmd/tags.go

@@ -0,0 +1,40 @@
+package cmd
+
+import (
+	"encoding/json"
+	"fmt"
+	"gitea.stuzer.link/stuzer05/docker-registry-manager/internal/app"
+	"net/http"
+)
+
+func RegistryTags(app *app.App, imageName string) {
+	type tagList struct {
+		Tags []string `json:"tags"`
+	}
+
+	resp, err := http.Get(fmt.Sprintf("%s/v2/%s/tags/list", app.RegistryURL, imageName))
+	if err != nil {
+		fmt.Println("Error fetching tags:", err)
+		return
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode == http.StatusNotFound {
+		fmt.Printf("Error: Image '%s' not found in the registry.\n", imageName)
+		return
+	}
+
+	var tl tagList
+	if err := json.NewDecoder(resp.Body).Decode(&tl); err != nil {
+		fmt.Println("Error decoding response:", err)
+		return
+	}
+
+	if len(tl.Tags) == 0 {
+		fmt.Printf("No tags found for image: %s\n", imageName)
+	} else {
+		for _, tag := range tl.Tags {
+			fmt.Println(tag)
+		}
+	}
+}

internal/app/app.go

@@ -0,0 +1,33 @@
+package app
+
+import (
+	"fmt"
+	"os"
+)
+
+type App struct {
+	RegistryName     string
+	RegistryURL      string
+	RegistryUsername string
+	RegistryPassword string
+}
+
+func NewApp() (*App, error) {
+	registryName := os.Getenv("REGISTRY_NAME")
+	if registryName == "" {
+		return nil, fmt.Errorf("REGISTRY_NAME not found in .env")
+	}
+
+	registryUsername := os.Getenv("REGISTRY_USERNAME")
+	registryPassword := os.Getenv("REGISTRY_PASSWORD")
+	if registryUsername == "" || registryPassword == "" {
+		return nil, fmt.Errorf("REGISTRY_USERNAME or REGISTRY_PASSWORD not found in .env")
+	}
+
+	return &App{
+		RegistryName:     registryName,
+		RegistryURL:      "https://" + registryName,
+		RegistryUsername: registryUsername,
+		RegistryPassword: registryPassword,
+	}, nil
+}

main.go

@@ -1,46 +1,30 @@
 package main
 
 import (
-	"encoding/base64"
-	"encoding/json"
 	"fmt"
-	"github.com/joho/godotenv"
-	"net/http"
 	"os"
-	"os/exec"
 	"path/filepath"
 	"runtime"
-	"strings"
-)
 
-var (
-	registryName     string
-	registryURL      string
-	registryUsername string
-	registryPassword string
+	"gitea.stuzer.link/stuzer05/docker-registry-manager/cmd"
+	"gitea.stuzer.link/stuzer05/docker-registry-manager/internal/app"
+
+	"github.com/joho/godotenv"
 )
 
 func main() {
 	// Load .env file
-	_, b, _, _ := runtime.Caller(0) // @refactor
+	_, b, _, _ := runtime.Caller(0)
 	err := godotenv.Load(filepath.Join(filepath.Dir(b), ".env"))
 	if err != nil {
 		fmt.Println("Error loading .env file:", err)
 		return
 	}
 
-	// Read values from environment
-	registryName = os.Getenv("REGISTRY_NAME")
-	if registryName == "" {
-		fmt.Println("REGISTRY_NAME not found in .env")
-		return
-	}
-
-	registryURL = "https://" + registryName
-	registryUsername = os.Getenv("REGISTRY_USERNAME")
-	registryPassword = os.Getenv("REGISTRY_PASSWORD")
-	if registryUsername == "" || registryPassword == "" {
-		fmt.Println("REGISTRY_USERNAME or REGISTRY_PASSWORD not found in .env")
+	// Initialize app
+	app, err := app.NewApp()
+	if err != nil {
+		fmt.Println("Error initializing app:", err)
 		return
 	}
 
@@ -51,213 +35,32 @@ func main() {
 
 	switch os.Args[1] {
 	case "images":
-		registryImages()
+		cmd.RegistryImages(app)
 	case "tags":
 		if len(os.Args) < 3 {
 			fmt.Println("Error: Please provide an image name.")
 			return
 		}
-		registryTags(os.Args[2])
+		cmd.RegistryTags(app, os.Args[2])
 	case "rm":
 		if len(os.Args) < 3 {
 			fmt.Println("Error: Please provide an image name and optionally a tag (e.g., my-image or my-image:latest).")
 			return
 		}
-		registryRm(os.Args[2])
+		cmd.RegistryRm(app, os.Args[2])
 	case "push":
 		if len(os.Args) < 3 {
 			fmt.Println("Error: Please provide an image name to push.")
 			return
 		}
-		registryPush(os.Args[2])
+		cmd.RegistryPush(app, os.Args[2])
 	case "tag":
 		if len(os.Args) < 4 {
 			fmt.Println("Error: Please provide both source and target image names.")
 			return
 		}
-		registryTag(os.Args[2], os.Args[3])
+		cmd.RegistryTag(app, os.Args[2], os.Args[3])
 	default:
 		fmt.Println("Invalid command. Usage: registry [images|tags|rm|push|tag] <args>")
 	}
 }
-
-func registryImages() {
-	type catalog struct {
-		Repositories []string `json:"repositories"`
-	}
-
-	resp, err := http.Get(registryURL + "/v2/_catalog")
-	if err != nil {
-		fmt.Println("Error fetching images:", err)
-		return
-	}
-	defer resp.Body.Close()
-
-	if resp.StatusCode == http.StatusNotFound {
-		fmt.Println("No images found in the registry.")
-		return
-	}
-
-	var cat catalog
-	if err := json.NewDecoder(resp.Body).Decode(&cat); err != nil {
-		fmt.Println("Error decoding response:", err)
-		return
-	}
-
-	if len(cat.Repositories) == 0 {
-		fmt.Println("No images found in the registry.")
-	} else {
-		for _, img := range cat.Repositories {
-			fmt.Println(img)
-		}
-	}
-}
-
-func registryTags(imageName string) {
-	type tagList struct {
-		Tags []string `json:"tags"`
-	}
-
-	resp, err := http.Get(fmt.Sprintf("%s/v2/%s/tags/list", registryURL, imageName))
-	if err != nil {
-		fmt.Println("Error fetching tags:", err)
-		return
-	}
-	defer resp.Body.Close()
-
-	if resp.StatusCode == http.StatusNotFound {
-		fmt.Printf("Error: Image '%s' not found in the registry.\n", imageName)
-		return
-	}
-
-	var tl tagList
-	if err := json.NewDecoder(resp.Body).Decode(&tl); err != nil {
-		fmt.Println("Error decoding response:", err)
-		return
-	}
-
-	if len(tl.Tags) == 0 {
-		fmt.Printf("No tags found for image: %s\n", imageName)
-	} else {
-		for _, tag := range tl.Tags {
-			fmt.Println(tag)
-		}
-	}
-}
-
-func registryRm(imageArg string) {
-	parts := strings.SplitN(imageArg, ":", 2)
-	imageName := parts[0]
-	tag := ""
-	if len(parts) > 1 {
-		tag = parts[1]
-	}
-
-	if tag == "" {
-		deleteImageByName(imageName)
-	} else {
-		deleteImageByTag(imageName, tag)
-	}
-}
-
-func deleteImageByName(imageName string) {
-	type tagList struct {
-		Tags []string `json:"tags"`
-	}
-
-	resp, err := http.Get(fmt.Sprintf("%s/v2/%s/tags/list", registryURL, imageName))
-	if err != nil {
-		fmt.Println("Error fetching tags:", err)
-		return
-	}
-	defer resp.Body.Close()
-
-	if resp.StatusCode == http.StatusNotFound {
-		fmt.Printf("Error: Image '%s' not found in the registry.\n", imageName)
-		return
-	}
-
-	var tl tagList
-	if err := json.NewDecoder(resp.Body).Decode(&tl); err != nil {
-		fmt.Println("Error decoding response:", err)
-		return
-	}
-
-	for _, tag := range tl.Tags {
-		deleteImageByTag(imageName, tag)
-	}
-}
-
-func deleteImageByTag(imageName, tag string) {
-	client := &http.Client{}
-
-	req, err := http.NewRequest("HEAD", fmt.Sprintf("%s/v2/%s/manifests/%s", registryURL, imageName, tag), nil)
-	if err != nil {
-		fmt.Println("Error creating request:", err)
-		return
-	}
-	req.Header.Set("Accept", "application/vnd.docker.distribution.manifest.v2+json")
-
-	resp, err := client.Do(req)
-	if err != nil {
-		fmt.Println("Error fetching manifest:", err)
-		return
-	}
-	defer resp.Body.Close()
-
-	if resp.StatusCode == http.StatusNotFound {
-		fmt.Printf("Error: Image '%s:%s' not found in the registry.\n", imageName, tag)
-		return
-	}
-
-	digest := resp.Header.Get("Docker-Content-Digest")
-
-	req, err = http.NewRequest("DELETE", fmt.Sprintf("%s/v2/%s/manifests/%s", registryURL, imageName, digest), nil)
-	if err != nil {
-		fmt.Println("Error creating delete request:", err)
-		return
-	}
-
-	// Join username and password for Basic Auth
-	registryCredentials := registryUsername + ":" + registryPassword
-	req.Header.Set("Authorization", "Basic "+base64.StdEncoding.EncodeToString([]byte(registryCredentials)))
-
-	resp, err = client.Do(req)
-	if err != nil {
-		fmt.Println("Error deleting image:", err)
-		return
-	}
-	defer resp.Body.Close()
-
-	if resp.StatusCode == http.StatusAccepted {
-		fmt.Printf("Deleted image: %s:%s\n", imageName, tag)
-	} else {
-		fmt.Printf("Failed to delete image: %s:%s (status code: %d)\n", imageName, tag, resp.StatusCode)
-	}
-}
-
-func registryPush(imageName string) {
-	if !strings.HasPrefix(imageName, registryName) {
-		imageName = registryName + "/" + imageName
-	}
-
-	cmd := exec.Command("docker", "push", imageName)
-	cmd.Stdout = os.Stdout
-	cmd.Stderr = os.Stderr
-	if err := cmd.Run(); err != nil {
-		fmt.Println("Error pushing image:", err)
-	}
-}
-
-func registryTag(sourceImage, targetImage string) {
-	if !strings.HasPrefix(targetImage, registryName) {
-		targetImage = registryName + "/" + targetImage
-	}
-
-	cmd := exec.Command("docker", "tag", sourceImage, targetImage)
-	cmd.Stdout = os.Stdout
-	cmd.Stderr = os.Stderr
-	if err := cmd.Run(); err != nil {
-		fmt.Println("Error tagging image:", err)
-	}
-}