WIP: frontend refactor

src/Backend/DiunaBI.UI.Shared/Services/LayerService.cs

@@ -0,0 +1,59 @@
+using System.Net.Http.Json;
+using System.Text.Json;
+using DiunaBI.Application.DTOModels;
+using DiunaBI.Application.DTOModels.Common;
+
+namespace DiunaBI.UI.Shared.Services;
+
+public class LayerService
+{
+    private readonly HttpClient _httpClient;
+
+    public LayerService(HttpClient httpClient)
+    {
+        _httpClient = httpClient;
+    }
+    
+    private readonly JsonSerializerOptions _jsonOptions = new()
+    {
+        PropertyNameCaseInsensitive = true
+    };
+
+    public async Task<PagedResult<LayerDto>> GetLayersAsync(LayerFilterRequest filterRequest)
+    {
+        var query = $"/api/Layers?start={filterRequest.Page}&limit={filterRequest.Page}";
+        
+        if (!string.IsNullOrEmpty(filterRequest.Search))
+            query += $"&name={Uri.EscapeDataString(filterRequest.Search)}";
+        
+        /*
+        if (type.HasValue)
+            query += $"&type={type.Value}";
+            */
+
+        var response = await _httpClient.GetAsync(query);
+        response.EnsureSuccessStatusCode();
+        
+        var json = await response.Content.ReadAsStringAsync();
+        var result = JsonSerializer.Deserialize<PagedResult<LayerDto>>(json, _jsonOptions);
+        
+        return result ?? new PagedResult<LayerDto>();
+    }
+
+    public async Task<LayerDto?> GetLayerByIdAsync(Guid id)
+    {
+        var response = await _httpClient.GetAsync($"/api/Layers/{id}");
+        
+        if (!response.IsSuccessStatusCode)
+            return null;
+        
+        return await response.Content.ReadFromJsonAsync<LayerDto>();
+    }
+
+    public async Task<bool> UpdateRecordsAsync(Guid layerId, List<RecordDto> records)
+    {
+        // TODO: Implement if needed - backend doesn't have PUT endpoint yet
+        // For now we don't need it for read-only view
+        return await Task.FromResult(false);
+    }
+}