clean: moved funcs to specific files + GetPage usecase/repo

adapters/secondary/gateways/pageRepository.go

@@ -0,0 +1,32 @@
+package gateways
+
+import (
+	. "GohCMS2/domain/gateways"
+	"bytes"
+	"embed"
+	"html/template"
+)
+
+type PageRepository struct{}
+
+//go:embed web/templates/*
+var templateFiles embed.FS
+
+func NewPageRepository() *PageRepository {
+	return &PageRepository{}
+}
+
+func (p *PageRepository) Get(name string, data interface{}) ([]byte, error) {
+	var processedHTML bytes.Buffer
+	tmpl, err := template.ParseFS(templateFiles, "web/templates/"+name+".html")
+	if err != nil {
+		return nil, err
+	}
+	err = tmpl.Execute(&processedHTML, data)
+	if err != nil {
+		return nil, err
+	}
+	return processedHTML.Bytes(), nil
+}
+
+var _ IPageRepository = &PageRepository{}

api/article.go

@@ -20,7 +20,7 @@ func getArticle(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	article, err := container.GetArticleUseCase.GetArticle(uint32(id))
+	article, err := Container.GetArticleUseCase.GetArticle(uint32(id))
 	if err != nil {
 		http.Error(w, "The requested resource, identified by its unique ID, could not be found on the server.", http.StatusNotFound)
 		return
@@ -44,7 +44,7 @@ func postArticle(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	createdArticle, err := container.CreateArticleUseCase.CreateArticle(CreateArticleCommand{
+	createdArticle, err := Container.CreateArticleUseCase.CreateArticle(CreateArticleCommand{
 		Title: article.Title,
 		Body:  article.Body,
 	})
@@ -58,7 +58,7 @@ func postArticle(w http.ResponseWriter, r *http.Request) {
 }
 
 func listArticles(w http.ResponseWriter, _ *http.Request) {
-	articles := container.ListArticlesUseCase.ListArticles()
+	articles := Container.ListArticlesUseCase.ListArticles()
 	articlesJson, _ := json.Marshal(articles)
 
 	_, _ = w.Write(articlesJson)

api/auth.go

@@ -45,8 +45,8 @@ func SetJwtCookie(w *http.ResponseWriter, userId uint32) error {
 	return nil
 }
 
-func isUserTableEmpty() bool {
-	users := container.ListUsersUseCase.ListUsers()
+func IsUserTableEmpty() bool {
+	users := Container.ListUsersUseCase.ListUsers()
 	return len(users) == 0
 }
 
@@ -75,7 +75,7 @@ func login(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	dbUser, err := container.GetUserUseCase.GetUserByUsername(user.Username)
+	dbUser, err := Container.GetUserUseCase.GetUserByUsername(user.Username)
 	if err != nil {
 		http.Error(w, logsErrorMessage, http.StatusForbidden)
 		return
@@ -94,7 +94,7 @@ func login(w http.ResponseWriter, r *http.Request) {
 }
 
 func register(w http.ResponseWriter, r *http.Request) {
-	if !IsLoggedIn(r) && !isUserTableEmpty() {
+	if !IsLoggedIn(r) && !IsUserTableEmpty() {
 		http.Error(w, "You are not allowed to create a user. Log in or reset database.", http.StatusForbidden)
 		return
 	}
@@ -112,7 +112,7 @@ func register(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	createdUser, err := container.CreateUserUseCase.CreateUser(useCases.CreateUserCommand{
+	createdUser, err := Container.CreateUserUseCase.CreateUser(useCases.CreateUserCommand{
 		Username: user.Username,
 		Password: user.Password,
 		Email:    user.Email,
@@ -128,7 +128,7 @@ func register(w http.ResponseWriter, r *http.Request) {
 	_, _ = w.Write(message)
 }
 
-func removeJwtCookie(w http.ResponseWriter) {
+func RemoveJwtCookie(w http.ResponseWriter) {
 	http.SetCookie(w, &http.Cookie{
 		Name:     "jwt",
 		Value:    "",
@@ -141,7 +141,7 @@ func removeJwtCookie(w http.ResponseWriter) {
 }
 
 func logout(w http.ResponseWriter, _ *http.Request) {
-	removeJwtCookie(w)
+	RemoveJwtCookie(w)
 	message, _ := json.Marshal(map[string]interface{}{"message": "User logged out! HTTPonly jwt cookie deleted"})
 	_, _ = w.Write(message)
 }

api/dependecyInjection.go

@@ -8,16 +8,17 @@ import (
 	"gorm.io/gorm"
 )
 
-type Container struct {
+type LocalContainer struct {
 	CreateArticleUseCase *CreateArticleUseCase
 	GetArticleUseCase    *GetArticleUseCase
 	ListArticlesUseCase  *ListArticlesUseCase
 	GetUserUseCase       *GetUserUseCase
 	CreateUserUseCase    *CreateUserUseCase
 	ListUsersUseCase     *ListUsersUseCase
+	GetPageUseCase       *GetPageUseCase
 }
 
-var container *Container
+var Container *LocalContainer
 
 func setContainer(
 	createArticle *CreateArticleUseCase,
@@ -26,20 +27,22 @@ func setContainer(
 	getUser *GetUserUseCase,
 	createUser *CreateUserUseCase,
 	listUsers *ListUsersUseCase,
-) *Container {
-	container = &Container{
+	getPage *GetPageUseCase,
+) *LocalContainer {
+	Container = &LocalContainer{
 		CreateArticleUseCase: createArticle,
 		GetArticleUseCase:    getArticle,
 		ListArticlesUseCase:  listArticle,
 		GetUserUseCase:       getUser,
 		CreateUserUseCase:    createUser,
 		ListUsersUseCase:     listUsers,
+		GetPageUseCase:       getPage,
 	}
-	return container
+	return Container
 }
 
 func InitContainer() {
-	if container != nil {
+	if Container != nil {
 		return
 	}
 
@@ -59,6 +62,7 @@ func InitContainer() {
 	_ = digContainer.Provide(func(db *gorm.DB) *GetUserUseCase { return NewGetUserUseCase(db) })
 	_ = digContainer.Provide(func(db *gorm.DB) *CreateUserUseCase { return NewCreateUserUseCase(db) })
 	_ = digContainer.Provide(func(db *gorm.DB) *ListUsersUseCase { return NewListUsersUseCase(db) })
+	_ = digContainer.Provide(NewGetPageUseCase)
 
 	_ = digContainer.Invoke(setContainer)
 }

api/page.go

@@ -1,22 +1,14 @@
 package api
 
 import (
-	"bytes"
 	"embed"
-	"encoding/json"
 	"github.com/go-chi/chi/v5"
-	"html/template"
 	"io/fs"
 	"net/http"
-	"os"
 	"path/filepath"
-	"strings"
 )
 
-//go:embed web/templates/*
-var templateFiles embed.FS
-
-//go:embed web/static
+//go:embed static
 var staticFolder embed.FS
 
 var contentTypes = map[string]string{
@@ -29,110 +21,7 @@ var contentTypes = map[string]string{
 	".ico":  "image/x-icon",
 }
 
-const loginRoute = "/login"
-
-type LoginPage struct {
-	IsError  bool   `json:"isError"`
-	Error    string `json:"error"`
-	Username string `json:"username"`
-}
-
-func NewLoginPage(error string, username string) *LoginPage {
-	return &LoginPage{
-		IsError:  strings.Compare(error, "") != 0,
-		Error:    error,
-		Username: username,
-	}
-}
-
-func getPage(page string, data interface{}) ([]byte, error) {
-	var processedHTML bytes.Buffer
-	tmpl, err := template.ParseFS(templateFiles, "web/templates/"+page+".html")
-	if err != nil {
-		return nil, err
-	}
-	err = tmpl.Execute(&processedHTML, data)
-	if err != nil {
-		return nil, err
-	}
-	return processedHTML.Bytes(), nil
-}
-
-func getLoginPageHandler(loginPage *LoginPage) http.HandlerFunc {
-	return func(w http.ResponseWriter, r *http.Request) {
-		if IsLoggedIn(r) {
-			http.Redirect(w, r, "/home", http.StatusSeeOther)
-			return
-		}
-		if r.Method == http.MethodPost {
-			postLoginPage(w, r)
-			return
-		}
-		bs, err := getPage("login", &loginPage)
-		if err != nil {
-			_, _ = w.Write([]byte(err.Error()))
-		}
-		_, _ = w.Write(bs)
-	}
-}
-
-func postLoginPage(w http.ResponseWriter, r *http.Request) {
-	_ = r.ParseForm()
-
-	credentials, err := json.Marshal(&UserLogin{
-		Username: r.FormValue("username"),
-		Password: r.FormValue("password"),
-	})
-	if err != nil {
-		r.Method = http.MethodGet
-		getLoginPageHandler(NewLoginPage("Invalid username or password.", r.FormValue("username")))(w, r)
-		return
-	}
-
-	response, err := http.Post(
-		"http://localhost:"+os.Getenv("PORT")+"/v1/auth/login",
-		"application/json",
-		bytes.NewBuffer(credentials))
-
-	if err != nil || response.StatusCode != http.StatusOK {
-		r.Method = http.MethodGet
-		getLoginPageHandler(NewLoginPage("Invalid username or password.", r.FormValue("username")))(w, r)
-		return
-	}
-
-	w.Header().Set("Set-Cookie", response.Header.Get("Set-Cookie"))
-
-	http.Redirect(w, r, "/home", http.StatusSeeOther)
-}
-
-func getHomePage(w http.ResponseWriter, _ *http.Request) {
-	navbarTmpl, _ := getPage("componentNavbar", nil)
-	homeTmpl, _ := getPage("home", map[string]interface{}{
-		"Navbar": template.HTML(navbarTmpl),
-	})
-	_, _ = w.Write(homeTmpl)
-}
-
-func getLogin(w http.ResponseWriter, r *http.Request) {
-	http.Redirect(w, r, loginRoute, http.StatusPermanentRedirect)
-}
-
-func getLogout(w http.ResponseWriter, r *http.Request) {
-	removeJwtCookie(w)
-	http.Redirect(w, r, loginRoute, http.StatusSeeOther)
-}
-
-func IsLoggedInMiddleware(next http.Handler) http.Handler {
-	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		if !IsLoggedIn(r) {
-			http.Redirect(w, r, loginRoute, http.StatusSeeOther)
-			return
-		}
-		next.ServeHTTP(w, r)
-	})
-}
-
-func staticFileServerWithContentType(fsys http.FileSystem) http.Handler {
+func StaticFileServerWithContentType(fsys http.FileSystem) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		path := r.URL.Path
 		if ext := filepath.Ext(path); ext != "" {
@@ -147,9 +36,9 @@ func staticFileServerWithContentType(fsys http.FileSystem) http.Handler {
 func NewPageRouter() http.Handler {
 	r := chi.NewRouter()
 
-	contentStatic, _ := fs.Sub(fs.FS(staticFolder), "web/static")
+	contentStatic := fs.FS(staticFolder)
 
-	r.Handle("/static/*", staticFileServerWithContentType(http.FS(contentStatic)))
+	r.Handle("/static/*", StaticFileServerWithContentType(http.FS(contentStatic)))
 	r.HandleFunc("/favicon.ico", func(w http.ResponseWriter, r *http.Request) {
 		_, err := http.FS(staticFolder).Open("favicon.ico")
 		if err != nil {
@@ -157,14 +46,14 @@ func NewPageRouter() http.Handler {
 		}
 	})
 
-	r.Get("/", getLogin)
-	r.Get(loginRoute, getLoginPageHandler(NewLoginPage("", "")))
-	r.Post(loginRoute, getLoginPageHandler(NewLoginPage("", "")))
-	r.Get("/logout", getLogout)
+	r.Get("/", GetLogin)
+	r.Get(LoginRoute, GetLoginPageHandler(NewLoginPage("", "")))
+	r.Post(LoginRoute, GetLoginPageHandler(NewLoginPage("", "")))
+	r.Get("/logout", GetLogout)
 
 	r.Group(func(r chi.Router) {
 		r.Use(IsLoggedInMiddleware)
-		r.Get("/home", getHomePage)
+		r.Get("/home", GetHomePage)
 	})
 
 	return r

api/pageAuth.go

@@ -0,0 +1,91 @@
+package api
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"os"
+	"strings"
+)
+
+const LoginRoute = "/login"
+
+type LoginPage struct {
+	IsError  bool   `json:"isError"`
+	Error    string `json:"error"`
+	Username string `json:"username"`
+}
+
+func NewLoginPage(error string, username string) *LoginPage {
+	return &LoginPage{
+		IsError:  strings.Compare(error, "") != 0,
+		Error:    error,
+		Username: username,
+	}
+}
+
+func GetLoginPageHandler(loginPage *LoginPage) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		if IsLoggedIn(r) {
+			http.Redirect(w, r, "/home", http.StatusSeeOther)
+			return
+		}
+		if r.Method == http.MethodPost {
+			PostLoginPage(w, r)
+			return
+		}
+		bs, err := Container.GetPageUseCase.GetPage("login", &loginPage)
+		if err != nil {
+			_, _ = w.Write([]byte(err.Error()))
+		}
+		_, _ = w.Write(bs)
+	}
+}
+
+func PostLoginPage(w http.ResponseWriter, r *http.Request) {
+	_ = r.ParseForm()
+
+	credentials, err := json.Marshal(&UserLogin{
+		Username: r.FormValue("username"),
+		Password: r.FormValue("password"),
+	})
+	if err != nil {
+		r.Method = http.MethodGet
+		GetLoginPageHandler(NewLoginPage("Invalid username or password.", r.FormValue("username")))(w, r)
+		return
+	}
+
+	response, err := http.Post(
+		"http://localhost:"+os.Getenv("PORT")+"/v1/auth/login",
+		"application/json",
+		bytes.NewBuffer(credentials))
+
+	if err != nil || response.StatusCode != http.StatusOK {
+		r.Method = http.MethodGet
+		GetLoginPageHandler(NewLoginPage("Invalid username or password.", r.FormValue("username")))(w, r)
+		return
+	}
+
+	w.Header().Set("Set-Cookie", response.Header.Get("Set-Cookie"))
+
+	http.Redirect(w, r, "/home", http.StatusSeeOther)
+}
+
+func GetLogin(w http.ResponseWriter, r *http.Request) {
+	http.Redirect(w, r, LoginRoute, http.StatusPermanentRedirect)
+}
+
+func GetLogout(w http.ResponseWriter, r *http.Request) {
+	RemoveJwtCookie(w)
+	http.Redirect(w, r, LoginRoute, http.StatusSeeOther)
+}
+
+func IsLoggedInMiddleware(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if !IsLoggedIn(r) {
+			http.Redirect(w, r, LoginRoute, http.StatusSeeOther)
+			return
+		}
+		next.ServeHTTP(w, r)
+	})
+}

api/pageHome.go

@@ -0,0 +1,14 @@
+package api
+
+import (
+	"html/template"
+	"net/http"
+)
+
+func GetHomePage(w http.ResponseWriter, _ *http.Request) {
+	navbarTmpl, _ := Container.GetPageUseCase.GetPage("componentNavbar", nil)
+	homeTmpl, _ := Container.GetPageUseCase.GetPage("home", map[string]interface{}{
+		"Navbar": template.HTML(navbarTmpl),
+	})
+	_, _ = w.Write(homeTmpl)
+}

domain/gateways/IPageRepository.go

@@ -0,0 +1,5 @@
+package gateways
+
+type IPageRepository interface {
+	Get(name string, data interface{}) ([]byte, error)
+}

useCases/GetPageUseCase.go

@@ -0,0 +1,19 @@
+package useCases
+
+import (
+	. "GohCMS2/adapters/secondary/gateways"
+)
+
+type GetPageUseCase struct {
+	pageRepository PageRepository
+}
+
+func NewGetPageUseCase() *GetPageUseCase {
+	return &GetPageUseCase{
+		pageRepository: *NewPageRepository(),
+	}
+}
+
+func (g *GetPageUseCase) GetPage(name string, data interface{}) ([]byte, error) {
+	return g.pageRepository.Get(name, data)
+}