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AMREZ.EOP.Infrastructures/Tenancy/SearchPathInterceptor.cs

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+using System.Data.Common;
+using Microsoft.EntityFrameworkCore.Diagnostics;
+
+namespace AMREZ.EOP.Infrastructures.Tenancy;
+
+public sealed class SearchPathInterceptor : DbConnectionInterceptor
+{
+    private string _schema = "public";
+    private bool _enabled;
+
+    public void Configure(string? schema, bool enabled)
+    {
+        _enabled = enabled;
+        _schema = string.IsNullOrWhiteSpace(schema) ? "public" : schema.Trim();
+    }
+
+    public override async Task ConnectionOpenedAsync(DbConnection connection, ConnectionEndEventData eventData, CancellationToken ct = default)
+    {
+        if (_enabled)
+        {
+            var schema = string.IsNullOrWhiteSpace(_schema) ? "public" : _schema.Replace("\"", "\"\"");
+            await using (var cmd = connection.CreateCommand())
+            {
+                cmd.CommandText = $"CREATE SCHEMA IF NOT EXISTS \"{schema}\";";
+                await cmd.ExecuteNonQueryAsync(ct);
+            }
+            await using (var cmd = connection.CreateCommand())
+            {
+                cmd.CommandText = $"SET LOCAL search_path TO \"{schema}\", pg_catalog;";
+                await cmd.ExecuteNonQueryAsync(ct);
+            }
+        }
+        await base.ConnectionOpenedAsync(connection, eventData, ct);
+    }
+}