From 6623d747ab47842dd4f084f53971f5f592c80a6e Mon Sep 17 00:00:00 2001
From: prokopparuzek <prokop.paruzek@paruzkovi.cz>
Date: Sun, 12 Oct 2025 16:14:06 +0200
Subject: [PATCH] admin: obtiznosti + ID

---
 admin.go                   | 12 ++++++------
 klice.go                   |  3 ++-
 templates.go               |  5 +++++
 templates/adminLevels.html |  6 ++++--
 4 files changed, 17 insertions(+), 9 deletions(-)

diff --git a/admin.go b/admin.go
index 3cccd5d..f3d018b 100644
--- a/admin.go
+++ b/admin.go
@@ -356,8 +356,8 @@ func AdminLevelHandler(w http.ResponseWriter, r *http.Request) {
 		}
 		// Deleting an existing difficulty level
 		if r.PostForm.Has("delete") {
-			levelName := r.FormValue("delete")
-			_, err := db.Exec("DELETE FROM difficulty_levels WHERE level_name = ?", levelName)
+			id := r.FormValue("delete")
+			_, err := db.Exec("DELETE FROM difficulty_levels WHERE id = ?", id)
 			if err != nil {
 				http.Error(w, "Database error", http.StatusInternalServerError)
 				return
@@ -379,16 +379,16 @@ func AdminLevelHandler(w http.ResponseWriter, r *http.Request) {
 		http.Redirect(w, r, "/admin/levels", http.StatusSeeOther)
 		return
 	}
-	rows, err := db.Query("SELECT level_name FROM difficulty_levels ORDER BY id")
+	rows, err := db.Query("SELECT id, level_name FROM difficulty_levels ORDER BY id")
 	if err != nil {
 		http.Error(w, "Database error", http.StatusInternalServerError)
 		return
 	}
 	defer rows.Close()
-	var difficultyLevels []string
+	var difficultyLevels []AdminLevelTemplateS
 	for rows.Next() {
-		var level string
-		if err := rows.Scan(&level); err != nil {
+		var level AdminLevelTemplateS
+		if err := rows.Scan(&level.ID, &level.Name); err != nil {
 			http.Error(w, "Database error", http.StatusInternalServerError)
 			return
 		}
diff --git a/klice.go b/klice.go
index 26a0ebe..294c6ca 100644
--- a/klice.go
+++ b/klice.go
@@ -13,6 +13,7 @@ import (
 )
 
 const domain = "http://localhost:8080"
+const dbFile = "./klice.db"
 
 var db *sql.DB
 
@@ -323,7 +324,7 @@ func qrHandler(w http.ResponseWriter, r *http.Request) {
 
 func main() {
 	var err error
-	db, err = sql.Open("sqlite3", "./klice.db?_fk=on")
+	db, err = sql.Open("sqlite3", dbFile+"?_fk=on")
 	if err != nil {
 		fmt.Println("Error opening database:", err)
 		return
diff --git a/templates.go b/templates.go
index 3afc5fd..e7dc2f6 100644
--- a/templates.go
+++ b/templates.go
@@ -72,6 +72,11 @@ type AdminQRTemplateS struct {
 	Positions []int
 }
 
+type AdminLevelTemplateS struct {
+	ID   int
+	Name string
+}
+
 var CipherTemplate = template.Must(template.ParseFiles("templates/assignment.html"))
 var TeamTemplate = template.Must(template.ParseFiles("templates/team.html"))
 var AdminTeamsTemplate = template.Must(template.ParseFiles("templates/adminTeams.html"))
diff --git a/templates/adminLevels.html b/templates/adminLevels.html
index 556af58..dbd7fcd 100644
--- a/templates/adminLevels.html
+++ b/templates/adminLevels.html
@@ -10,15 +10,17 @@
     <h1>Úrovně obtížnosti</h1>
     <table border="1">
         <tr>
+            <th>ID</th>
             <th>Jméno</th>
             <th>Smazat</th>
         </tr>
         {{range .}}
         <tr>
-            <td>{{.}}</td>
+            <td>{{.ID}}</td>
+            <td>{{.Name}}</td>
             <td>
                 <form action="/admin/levels" method="post">
-                    <input type="hidden" name="delete" value="{{.}}">
+                    <input type="hidden" name="delete" value="{{.ID}}">
                     <button type="submit">Smazat</button>
                 </form>
             </td>