// ==========================================================================
//  Squidex Headless CMS
// ==========================================================================
//  Copyright (c) Squidex UG (haftungsbeschraenkt)
//  All rights reserved. Licensed under the MIT license.
// ==========================================================================

using Squidex.Domain.Apps.Core.HandleRules;
using Squidex.Domain.Apps.Core.Rules.EnrichedEvents;
using Squidex.Domain.Apps.Core.Scripting;
using Squidex.Infrastructure.Http;

namespace Squidex.Extensions.Actions
{
    public static class RuleHelper
    {
        public static bool ShouldDelete(this EnrichedEvent @event, IScriptEngine scriptEngine, string expression)
        {
            if (!string.IsNullOrWhiteSpace(expression))
            {
                // Script vars are just wrappers over dictionaries for better performance.
                var vars = new EventScriptVars
                {
                    Event = @event
                };

                return scriptEngine.Evaluate(vars, expression);
            }

            return IsContentDeletion(@event) || IsAssetDeletion(@event);
        }

        public static bool IsContentDeletion(this EnrichedEvent @event)
        {
            return @event is EnrichedContentEvent contentEvent &&
                (contentEvent.Type == EnrichedContentEventType.Deleted ||
                 contentEvent.Type == EnrichedContentEventType.Unpublished);
        }

        public static bool IsAssetDeletion(this EnrichedEvent @event)
        {
            return @event is EnrichedAssetEvent { Type: EnrichedAssetEventType.Deleted };
        }

        public static async Task<Result> OneWayRequestAsync(this HttpClient client, HttpRequestMessage request, string requestBody = null,
            CancellationToken ct = default)
        {
            HttpResponseMessage response = null;
            try
            {
                response = await client.SendAsync(request, ct);

                var responseString = await response.Content.ReadAsStringAsync(ct);
                var requestDump = DumpFormatter.BuildDump(request, response, requestBody, responseString);

                if (!response.IsSuccessStatusCode)
                {
                    var ex = new HttpRequestException($"Response code does not indicate success: {(int)response.StatusCode} ({response.StatusCode}).");

                    return Result.Failed(ex, requestDump);
                }
                else
                {
                    return Result.Success(requestDump);
                }
            }
            catch (Exception ex)
            {
                var requestDump = DumpFormatter.BuildDump(request, response, requestBody, ex.ToString());

                return Result.Failed(ex, requestDump);
            }
        }
    }
}