feat: choose the images that will stay

assets/compare-similar.css

@@ -0,0 +1,59 @@
+body {
+    font-family: Arial, sans-serif;
+    margin: 0;
+    padding: 0;
+    background-color: #f4f4f4;
+}
+
+h1 {
+    text-align: center;
+    margin: 20px;
+}
+
+ul {
+	padding: 0;
+	display: flex;
+	flex-wrap: wrap;
+}
+
+li {
+  padding: 0;
+  list-style-type: none;
+  max-height: 33vh;
+  max-width: 33vw;
+}
+
+.pic-num-2 li{
+  max-height: 100vh;
+  max-width: 50vw;
+}
+.pic-num-4 li {
+  max-height: 50vh;
+  max-width: 50vw;
+}
+
+label, .container, .li {
+	box-sizing: border-box;
+	display: block;
+	width: 100%;
+	height: 100%;
+}
+
+img {
+  width: 100%;
+  height: 100%;
+  object-fit: contain;
+}
+
+
+input[type="checkbox"] {
+	display:none;
+}
+
+input[type="checkbox"] + label{
+	padding: 0.5rem;
+}
+
+input[type="checkbox"]:checked + label{
+	background-color: green;
+}

main.go

@@ -58,7 +58,16 @@ func main() {
 			imageFiles = append(imageFiles, k)
 		}
 		sort.Strings(imageFiles)
-		err := tmpl.Execute(w, imageFiles)
+		grid := 9
+		if len(imageFiles) <= 2 {
+			grid = 2
+		} else if len(imageFiles) <= 4 {
+			grid = 4
+		}
+		err := tmpl.Execute(w, map[string]any{
+			"grid":     grid,
+			"pictures": imageFiles,
+		})
 		if err != nil {
 			http.Error(w, err.Error(), 500)
 		}

templates/compare-similar.html

@@ -10,8 +10,8 @@ <h1>Decide which one will stay</h1>
 	<div class="control-bar">
 		<input type="submit" value="Delete pictures that are not selected"/>
 	</div>
-	<ul class="image-wrapper">
-		{{range .}}
+	<ul class="image-wrapper pic-num-{{ .grid }}">
+		{{ range .pictures }}
 		<li>
 			<div class="container">
 				<input type="checkbox" value="true" name="{{ . }}" id="{{ . }}" />