Adding Flags API

src/api/MicCheck.Api/Data/DatabaseUrlParser.cs

@@ -0,0 +1,21 @@
+namespace MicCheck.Api.Data;
+
+public static class DatabaseUrlParser
+{
+    /// <summary>
+    /// Converts a DATABASE_URL in postgresql://user:password@host:port/dbname format
+    /// to an Npgsql connection string.
+    /// </summary>
+    public static string ToNpgsqlConnectionString(string databaseUrl)
+    {
+        var uri = new Uri(databaseUrl);
+        var userInfo = uri.UserInfo.Split(':');
+        var host = uri.Host;
+        var port = uri.Port > 0 ? uri.Port : 5432;
+        var database = uri.AbsolutePath.TrimStart('/');
+        var username = userInfo.Length > 0 ? userInfo[0] : string.Empty;
+        var password = userInfo.Length > 1 ? userInfo[1] : string.Empty;
+
+        return $"Host={host};Port={port};Database={database};Username={username};Password={password}";
+    }
+}