Started working on listing page

src/HopFrame.Core/Services/Implementations/TableManager.cs

@@ -1,15 +1,49 @@
-using Microsoft.EntityFrameworkCore;
+using HopFrame.Core.Config;
+using Microsoft.EntityFrameworkCore;
 
 namespace HopFrame.Core.Services.Implementations;
 
-internal sealed class TableManager<TModel>(DbContext context) : ITableManager where TModel : class {
+internal sealed class TableManager<TModel>(DbContext context, TableConfig config) : ITableManager where TModel : class {
     
-    public async Task<IEnumerable<object>> LoadPage(int page, int perPage = 25) {
+    public IQueryable<object> LoadPage(int page, int perPage = 20) {
         var table = context.Set<TModel>();
-        return await table
+        return table
             .Skip(page * perPage)
-            .Take(perPage)
-            .ToArrayAsync();
+            .Take(perPage);
+    }
+
+    public (IEnumerable<object>, int) Search(string searchTerm, int page = 0, int perPage = 20) {
+        var table = context.Set<TModel>();
+        var all = table
+            .AsEnumerable()
+            .Where(item => ItemSearched(item, searchTerm))
+            .ToList();
+
+        return (all.Skip(page * perPage).Take(perPage), (int)Math.Ceiling(all.Count / (double)perPage));
+    }
+
+    public int TotalPages(int perPage = 20) {
+        var table = context.Set<TModel>();
+        return (int)Math.Ceiling(table.Count() / (double)perPage);
+    }
+
+    public async Task DeleteItem(object item) {
+        var table = context.Set<TModel>();
+        table.Remove((item as TModel)!);
+        await context.SaveChangesAsync();
+    }
+
+    private bool ItemSearched(TModel item, string searchTerm) {
+        foreach (var property in config.Properties) {
+            if (!property.Searchable) continue;
+            var value = property.Info.GetValue(item);
+            if (value is null) continue;
+            
+            var strValue = value.ToString();
+            if (strValue?.Contains(searchTerm) == true) 
+                return true;
+        }
+
+        return false;
     }
-    
 }