Add random background images for the login page

.gitignore

@@ -1,3 +1,4 @@
 test.db
 user_dbs/
 todo-web
+static/img/login/*

main.go

@@ -5,6 +5,7 @@ import (
 	"flag"
 	"fmt"
 	"net/http"
+	"path"
 
 	"github.com/Cameron-Reed1/todo-web/api"
 	"github.com/Cameron-Reed1/todo-web/db"
@@ -56,6 +57,7 @@ func addFrontendEndpoints(mux *http.ServeMux, static_path string) {
     mux.HandleFunc("/upcoming", pages.UpcomingFragment)
     mux.HandleFunc("/login", pages.Login)
     mux.HandleFunc("/create-account", pages.CreateAccount)
+    // mux.HandleFunc("/account", pages.AccountPage)
     mux.HandleFunc("POST /logout", pages.Logout)
     mux.HandleFunc("DELETE /delete/{id}", pages.DeleteItem)
     mux.HandleFunc("PATCH /set/{id}", pages.SetItemCompleted)
@@ -65,6 +67,8 @@ func addFrontendEndpoints(mux *http.ServeMux, static_path string) {
     fileServer := http.FileServer(http.Dir(static_path))
     mux.Handle("/css/", fileServer)
     mux.Handle("/js/", fileServer)
+    mux.Handle("/img/", fileServer)
+    mux.HandleFunc("/img/login.jpg", func(w http.ResponseWriter, r *http.Request) { pages.RandomImage(w, r, path.Join(static_path, "img/login/")) })
 }
 
 func addBackendEndpoints(mux *http.ServeMux) {

pages/randImage.go

@@ -0,0 +1,27 @@
+package pages
+
+import (
+	"math/rand/v2"
+	"net/http"
+	"os"
+	"path"
+)
+
+
+func RandomImage(w http.ResponseWriter, r *http.Request, basePath string) {
+    file, err := os.Open(basePath)
+    if err != nil {
+        return
+    }
+    defer file.Close()
+
+    files, err := file.Readdir(-1)
+    if err != nil {
+        return
+    }
+
+    idx := rand.UintN(uint(len(files)))
+
+    w.Header().Add("Cache-Control", "max-age=300")
+    http.ServeFile(w, r, path.Join(basePath, files[idx].Name()))
+}