using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Jugenddienst_Stunden.Infrastructure; 
internal sealed class RequestLoggingHandler : DelegatingHandler {
	protected override async Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) {
		// Log outgoing request URI + headers
		Debug.WriteLine($"[Http] Request: {request.Method} {request.RequestUri}");
		foreach (var h in request.Headers) {
			Debug.WriteLine($"[Http] RequestHeader: {h.Key} = {string.Join(", ", h.Value)}");
		}
		if (request.Content is not null) {
			foreach (var h in request.Content.Headers) {
				Debug.WriteLine($"[Http] ContentHeader: {h.Key} = {string.Join(", ", h.Value)}");
			}
		}

		var response = await base.SendAsync(request, cancellationToken).ConfigureAwait(false);

		// Log response status + Location (bei Redirects) + final request URI used by handler
		Debug.WriteLine($"[Http] Response: {(int)response.StatusCode} {response.ReasonPhrase}");
		if (response.Headers.Location is not null)
			Debug.WriteLine($"[Http] Response Location: {response.Headers.Location}");
		if (response.RequestMessage?.RequestUri is not null)
			Debug.WriteLine($"[Http] Final RequestUri: {response.RequestMessage.RequestUri}");

		return response;
	}
}