Fix admin route access and backend configuration

- Added /admin redirect to login page in nginx config
- Fixed backend server.js route ordering for proper admin handling
- Updated authentication middleware and routes
- Added user management routes
- Configured PostgreSQL integration
- Updated environment configuration

Sky_Art_shop/Views/AdminUpload/Index.cshtml

@@ -0,0 +1,133 @@
+@model List<string>
+@{
+    Layout = "~/Views/Shared/_AdminLayout.cshtml";
+    ViewData["Title"] = "Media Upload";
+}
+
+<div class="mb-4">
+    <h2>Media Upload</h2>
+    <p class="text-muted">Upload and manage your images</p>
+</div>
+
+<div class="card mb-4">
+    <div class="card-body">
+        <h5 class="card-title">Upload New Image</h5>
+        <form id="uploadForm" enctype="multipart/form-data">
+            <div class="mb-3">
+                <input type="file" class="form-control" id="imageFile" accept="image/*" multiple>
+            </div>
+            <button type="button" class="btn btn-primary" onclick="uploadImage()">
+                <i class="bi bi-cloud-upload"></i> Upload Image
+            </button>
+        </form>
+        <div id="uploadProgress" class="mt-3" style="display: none;">
+            <div class="progress">
+                <div class="progress-bar" role="progressbar" style="width: 0%"></div>
+            </div>
+        </div>
+        <div id="uploadResult" class="mt-3"></div>
+    </div>
+</div>
+
+<div class="card">
+    <div class="card-body">
+        <h5 class="card-title">Uploaded Images (@Model.Count)</h5>
+        @if (Model.Any())
+        {
+            <div class="row g-3">
+                @foreach (var image in Model)
+                {
+                    <div class="col-md-3">
+                        <div class="card">
+                            <img src="@image" class="card-img-top" alt="Uploaded image" style="height: 200px; object-fit: cover;">
+                            <div class="card-body p-2">
+                                <div class="input-group input-group-sm">
+                                    <input type="text" class="form-control" value="@image" readonly onclick="this.select()">
+                                    <button class="btn btn-outline-secondary" type="button" onclick="copyToClipboard('@image')">
+                                        <i class="bi bi-clipboard"></i>
+                                    </button>
+                                </div>
+                                <button class="btn btn-sm btn-danger w-100 mt-2" onclick="deleteImage('@image', this)">
+                                    <i class="bi bi-trash"></i> Delete
+                                </button>
+                            </div>
+                        </div>
+                    </div>
+                }
+            </div>
+        }
+        else
+        {
+            <p class="text-muted">No images uploaded yet.</p>
+        }
+    </div>
+</div>
+
+@section Scripts {
+<script>
+function uploadImage() {
+    const fileInput = document.getElementById('imageFile');
+    const files = fileInput.files;
+    
+    if (files.length === 0) {
+        alert('Please select at least one file');
+        return;
+    }
+    
+    const formData = new FormData();
+    Array.from(files).forEach(file => {
+        formData.append('files', file);
+    });
+    
+    document.getElementById('uploadProgress').style.display = 'block';
+    
+    fetch('/admin/upload/multiple', {
+        method: 'POST',
+        body: formData
+    })
+    .then(response => response.json())
+    .then(result => {
+        document.getElementById('uploadProgress').style.display = 'none';
+        if (result.success) {
+            document.getElementById('uploadResult').innerHTML = 
+                '<div class="alert alert-success">Images uploaded successfully!</div>';
+            setTimeout(() => location.reload(), 1000);
+        } else {
+            document.getElementById('uploadResult').innerHTML = 
+                '<div class="alert alert-danger">Upload failed: ' + result.message + '</div>';
+        }
+    })
+    .catch(error => {
+        document.getElementById('uploadProgress').style.display = 'none';
+        document.getElementById('uploadResult').innerHTML = 
+            '<div class="alert alert-danger">Upload failed: ' + error + '</div>';
+    });
+}
+
+function copyToClipboard(text) {
+    navigator.clipboard.writeText(text).then(() => {
+        alert('URL copied to clipboard!');
+    });
+}
+
+function deleteImage(imageUrl, button) {
+    if (!confirm('Are you sure you want to delete this image?')) return;
+    
+    fetch('/admin/upload/delete', {
+        method: 'POST',
+        headers: {
+            'Content-Type': 'application/json',
+        },
+        body: JSON.stringify(imageUrl)
+    })
+    .then(response => response.json())
+    .then(result => {
+        if (result.success) {
+            button.closest('.col-md-3').remove();
+        } else {
+            alert('Delete failed: ' + result.message);
+        }
+    });
+}
+</script>
+}