using Data.SeaHavenIndustries;
using Data.SeaHavenIndustries.Enums;
using SeaHaven.Services.DTOs;

namespace SeaHaven.Services.Helpers
{
    public static class WorkOrderMediaProjection
    {
        public static List<WorkOrderMediaFileDto> ProjectAll(
            WorkOrder workOrder,
            IEnumerable<WorkOrderAttachments> attachments)
        {
            var media = new List<WorkOrderMediaFileDto>();
            var attachmentId = -1;

            if (!string.IsNullOrWhiteSpace(workOrder.BeforPhotoAttachment))
            {
                media.Add(new WorkOrderMediaFileDto
                {
                    Id = attachmentId--,
                    Category = WorkOrderMediaCategory.Before,
                    Url = workOrder.BeforPhotoAttachment,
                    FileName = ExtractFileName(workOrder.BeforPhotoAttachment),
                    IsLegacy = true
                });
            }

            if (!string.IsNullOrWhiteSpace(workOrder.AfterPhotoAttachment))
            {
                media.Add(new WorkOrderMediaFileDto
                {
                    Id = attachmentId--,
                    Category = WorkOrderMediaCategory.After,
                    Url = workOrder.AfterPhotoAttachment,
                    FileName = ExtractFileName(workOrder.AfterPhotoAttachment),
                    IsLegacy = true
                });
            }

            if (!string.IsNullOrWhiteSpace(workOrder.SignOffAttachment))
            {
                media.Add(new WorkOrderMediaFileDto
                {
                    Id = attachmentId--,
                    Category = WorkOrderMediaCategory.Completion,
                    Url = workOrder.SignOffAttachment,
                    FileName = ExtractFileName(workOrder.SignOffAttachment),
                    IsLegacy = true
                });
            }

            foreach (var attachment in attachments.Where(a => a.IsDeleted != true))
            {
                if (string.IsNullOrWhiteSpace(attachment.Attachments))
                    continue;

                media.Add(new WorkOrderMediaFileDto
                {
                    Id = attachment.Id,
                    Category = attachment.Category ?? WorkOrderMediaCategory.Extra,
                    Url = attachment.Attachments,
                    FileName = ExtractFileName(attachment.Attachments),
                    UploadedAt = attachment.CreatedDate?.ToUniversalTime().ToString("o"),
                    IsLegacy = false
                });
            }

            return media;
        }

        private static string? ExtractFileName(string url)
        {
            if (string.IsNullOrWhiteSpace(url))
                return null;

            var lastSlash = url.LastIndexOf('/');
            var segment = lastSlash >= 0 && lastSlash < url.Length - 1
                ? url[(lastSlash + 1)..]
                : url;

            try
            {
                return Uri.UnescapeDataString(segment);
            }
            catch (Exception)
            {
                return segment;
            }
        }
    }
}