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

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