feat(backend): add admin page for game creation

3 files changed, 49 insertions, 2 deletions

diff --git a/backend/admin/templates/game_edit.html b/backend/admin/templates/game_edit.html
index 2d769c4..b171343 100644
--- a/backend/admin/templates/game_edit.html
+++ b/backend/admin/templates/game_edit.html
@@ -34,8 +34,12 @@
     <input type="datetime-local" name="started_at" value="{{ if .Game.StartedAt }}{{ .Game.StartedAt }}{{ end }}">
   </div>
   <div>
-    <label>Problem ID</label>
-    <input type="text" name="problem_id" value="{{ .Game.ProblemID }}">
+    <label>Problem</label>
+    <select name="problem_id" required>
+      {{ range .Problems }}
+        <option value="{{ .ProblemID }}"{{ if eq $.Game.ProblemID .ProblemID }} selected{{ end }}>{{ .Title }} (id={{ .ProblemID }})</option>
+      {{ end }}
+    </select>
   </div>
   <div>
     <label>Main Player 1</label>
diff --git a/backend/admin/templates/game_new.html b/backend/admin/templates/game_new.html
new file mode 100644
index 0000000..3e3210a
--- /dev/null
+++ b/backend/admin/templates/game_new.html
@@ -0,0 +1,40 @@
+{{ template "base.html" . }}
+
+{{ define "breadcrumb" }}
+<a href="{{ .BasePath }}admin/dashboard">Dashboard</a> | <a href="{{ .BasePath }}admin/games">Games</a>
+{{ end }}
+
+{{ define "content" }}
+<form method="post">
+  <div>
+    <label>Display Name</label>
+    <input type="text" name="display_name" required>
+  </div>
+  <div>
+    <label>Game Type</label>
+    <select name="game_type" required>
+      <option value="1v1">1v1</option>
+      <option value="multiplayer">Multiplayer</option>
+    </select>
+  </div>
+  <div>
+    <label>Is Public</label>
+    <input type="checkbox" name="is_public">
+  </div>
+  <div>
+    <label>Duration Seconds</label>
+    <input type="number" name="duration_seconds" value="900" required>
+  </div>
+  <div>
+    <label>Problem</label>
+    <select name="problem_id" required>
+      {{ range .Problems }}
+        <option value="{{ .ProblemID }}">{{ .Title }} (id={{ .ProblemID }})</option>
+      {{ end }}
+    </select>
+  </div>
+  <div>
+    <button type="submit">Create</button>
+  </div>
+</form>
+{{ end }}
diff --git a/backend/admin/templates/games.html b/backend/admin/templates/games.html
index b5c512a..402c702 100644
--- a/backend/admin/templates/games.html
+++ b/backend/admin/templates/games.html
@@ -5,6 +5,9 @@
 {{ end }}
 
 {{ define "content" }}
+<div>
+  <a href="{{ .BasePath }}admin/games/new">Create New Game</a>
+</div>
 <ul>
   {{ range .Games }}
     <li>