using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using D365MetadataService.Services;
using D365MetadataService.Models;
using Newtonsoft.Json;
using Serilog;
namespace D365MetadataService.Handlers
{
/// <summary>
/// Handler for discovering modification capabilities of D365 objects
/// Implements the dynamic reflection approach
/// </summary>
public class DiscoverModificationCapabilitiesHandler : BaseRequestHandler
{
private readonly D365ReflectionService _reflectionService;
public DiscoverModificationCapabilitiesHandler(
D365ReflectionService reflectionService,
ILogger logger) : base(logger)
{
_reflectionService = reflectionService;
}
public override string SupportedAction => "discoverModificationCapabilities";
protected override async Task<ServiceResponse> HandleRequestAsync(ServiceRequest request)
{
try
{
// Extract object type parameter
if (!request.Parameters.TryGetValue("objectType", out var objectTypeObj) || objectTypeObj == null)
{
return ServiceResponse.CreateError("objectType parameter is required");
}
var objectType = objectTypeObj.ToString();
if (string.IsNullOrWhiteSpace(objectType))
{
return ServiceResponse.CreateError("objectType cannot be empty");
}
Logger.Information("Discovering modification capabilities for {ObjectType}", objectType);
// Use the dynamic reflection service to discover capabilities
var capabilities = await _reflectionService.DiscoverModificationCapabilitiesAsync(objectType);
Logger.Information("Found {MethodCount} modification methods for {ObjectType}",
capabilities.ModificationMethods?.Count ?? 0, objectType);
return ServiceResponse.CreateSuccess(capabilities);
}
catch (Exception ex)
{
var objectTypeForLogging = request.Parameters.TryGetValue("objectType", out var objType) ? objType?.ToString() : "unknown";
Logger.Error(ex, "Error discovering modification capabilities for object type: {ObjectType}", objectTypeForLogging);
return ServiceResponse.CreateError($"Failed to discover modification capabilities: {ex.Message}");
}
}
}
}
