add repository logic for mediafile

Francesco.Recipes.World/Repositories/MediaFile/IMediaFileRepository.cs

@@ -2,12 +2,10 @@
 {
     public interface IMediaFileRepository
     {
-        Task ReplaceInstructionImageAsync(Guid instructionId, IFormFile? newPhoto);
+        Task ReplaceInstructionImageAsync(Guid instructionId, Guid mediafileId, IFormFile? newPhoto);
 
         Task UploadInstructionImageAsync(Guid instructionId, IFormFile? photo);
 
-        Task ReplaceRecipeImageAsync(Guid recipeId, IFormFile? newPhoto);
-
-        Task UploadRecipeImageAsync(Guid recipeId, IFormFile? photo);
+        Task UploadRecipeMediaAsync(Guid recipeId, IFormFile mediaFile);
     }
 }

Francesco.Recipes.World/Repositories/MediaFile/MediaFileRepository.cs

@@ -18,7 +18,7 @@
             _recipeRepository = recipeRepository;
         }
 
-        public async Task ReplaceInstructionImageAsync(Guid instructionId, IFormFile? newPhoto)
+        public async Task ReplaceInstructionImageAsync(Guid instructionId, Guid mediaFileIdToReplace, IFormFile? newPhoto)
         {
             if (newPhoto is null)
             {
@@ -26,24 +26,32 @@
             }
 
             var instruction = await _instructionRepository.GetInstructionAsync(instructionId);
-            _context.RemoveRange(instruction.MediaFiles);
-            await _context.SaveChangesAsync();
 
-            await UploadInstructionImageAsync(instructionId, newPhoto);
-        }
-
-        public async Task ReplaceRecipeImageAsync(Guid recipeId, IFormFile? newPhoto)
-        {
-            if (newPhoto is null)
+            var mediaToReplace = instruction.MediaFiles.FirstOrDefault(m => m.Id == mediaFileIdToReplace);
+            if (mediaToReplace == null)
             {
-                throw new ArgumentNullException(nameof(newPhoto));
+                throw new InvalidOperationException("The specified media file does not exist.");
             }
 
-            var recipe = await _recipeRepository.GetRecipeAsync(recipeId);
-            _context.RemoveRange(recipe.MediaFiles);
+            _context.MediaFiles.Remove(mediaToReplace);
             await _context.SaveChangesAsync();
 
-            await UploadInstructionImageAsync(recipeId, newPhoto);
+            using (var memoryStream = new MemoryStream())
+            {
+                await newPhoto.CopyToAsync(memoryStream);
+
+                var newMedia = new MediaFile
+                {
+                    Id = Guid.NewGuid(),
+                    FileName = newPhoto.FileName,
+                    MimeType = newPhoto.ContentType,
+                    Data = memoryStream.ToArray(),
+                    Instruction = instruction,
+                };
+
+                _context.MediaFiles.Add(newMedia);
+                await _context.SaveChangesAsync();
+            }
         }
 
         public async Task UploadInstructionImageAsync(Guid instructionId, IFormFile? photo)
@@ -72,30 +80,61 @@
             }
         }
 
-        public async Task UploadRecipeImageAsync(Guid recipeId, IFormFile? photo)
+        public async Task UploadRecipeMediaAsync(Guid recipeId, IFormFile mediaFile)
         {
-            if (photo is null)
+            if (mediaFile == null)
             {
-                throw new ArgumentNullException(nameof(photo));
+                throw new ArgumentNullException(nameof(mediaFile));
             }
 
             var recipe = await _recipeRepository.GetRecipeAsync(recipeId);
 
-            using (var memoryStream = new MemoryStream())
+            if (recipe == null)
             {
-                await photo.CopyToAsync(memoryStream);
-
-                var recipeImage = new MediaFile
-                {
-                    FileName = photo.FileName,
-                    MimeType = photo.ContentType,
-                    Data = memoryStream.ToArray(),
-                    Recipe = recipe,
-                };
-
-                _context.Add(recipeImage);
-                await _context.SaveChangesAsync();
+                throw new InvalidOperationException("The specified recipe does not exist.");
             }
+
+            var isImage = mediaFile.ContentType.StartsWith("image/");
+            var isVideo = mediaFile.ContentType.StartsWith("video/");
+
+            if (!isImage && !isVideo)
+            {
+                throw new InvalidOperationException("Only image or video files are allowed.");
+            }
+
+            if (isImage)
+            {
+                var existingImage = recipe.MediaFiles?.FirstOrDefault(m => m.MimeType?.StartsWith("image/") == true);
+                if (existingImage != null)
+                {
+                    _context.MediaFiles.Remove(existingImage);
+                    await _context.SaveChangesAsync();
+                }
+            }
+            else if (isVideo)
+            {
+                var existingVideo = recipe.MediaFiles?.FirstOrDefault(m => m.MimeType?.StartsWith("video/") == true);
+                if (existingVideo != null)
+                {
+                    _context.MediaFiles.Remove(existingVideo);
+                    await _context.SaveChangesAsync();
+                }
+            }
+
+            using var memoryStream = new MemoryStream();
+            await mediaFile.CopyToAsync(memoryStream);
+
+            var newMedia = new MediaFile
+            {
+                Id = Guid.NewGuid(),
+                FileName = mediaFile.FileName,
+                MimeType = mediaFile.ContentType,
+                Data = memoryStream.ToArray(),
+                Recipe = recipe,
+            };
+
+            _context.MediaFiles.Add(newMedia);
+            await _context.SaveChangesAsync();
         }
     }
 }