feat: add video upload feature with support for validation and processing

- Introduced "video" as a new content type across backend and frontend.
- Updated validation schemas and MIME-type handling for video files.
- Implemented file size limits for videos (10 MB max) in configuration.
- Enhanced upload flow with auto-detection of file types (image, GIF, video).
- Expanded media processing to handle video files and convert them to WebM format.

backend/src/contents/contents.service.ts

@@ -55,22 +55,31 @@ export class ContentsService {
 			"image/webp",
 			"image/gif",
 			"video/webm",
+			"video/mp4",
+			"video/quicktime",
 		];
 
 		if (!allowedMimeTypes.includes(file.mimetype)) {
 			throw new BadRequestException(
-				"Format de fichier non supporté. Formats acceptés: png, jpeg, jpg, webp, webm, gif.",
+				"Format de fichier non supporté. Formats acceptés: png, jpeg, jpg, webp, webm, mp4, mov, gif.",
 			);
 		}
 
 		const isGif = file.mimetype === "image/gif";
-		const maxSizeKb = isGif
-			? this.configService.get<number>("MAX_GIF_SIZE_KB", 1024)
-			: this.configService.get<number>("MAX_IMAGE_SIZE_KB", 512);
+		const isVideo = file.mimetype.startsWith("video/");
+		let maxSizeKb: number;
+
+		if (isGif) {
+			maxSizeKb = this.configService.get<number>("MAX_GIF_SIZE_KB", 1024);
+		} else if (isVideo) {
+			maxSizeKb = this.configService.get<number>("MAX_VIDEO_SIZE_KB", 10240);
+		} else {
+			maxSizeKb = this.configService.get<number>("MAX_IMAGE_SIZE_KB", 512);
+		}
 
 		if (file.size > maxSizeKb * 1024) {
 			throw new BadRequestException(
-				`Fichier trop volumineux. Limite pour ${isGif ? "GIF" : "image"}: ${maxSizeKb} Ko.`,
+				`Fichier trop volumineux. Limite pour ${isGif ? "GIF" : isVideo ? "vidéo" : "image"}: ${maxSizeKb} Ko.`,
 			);
 		}
 
@@ -87,11 +96,14 @@ export class ContentsService {
 
 		// 2. Transcodage
 		let processed: MediaProcessingResult;
-		if (file.mimetype.startsWith("image/")) {
-			// Image ou GIF -> WebP (format moderne, bien supporté)
+		if (file.mimetype.startsWith("image/") && file.mimetype !== "image/gif") {
+			// Image -> WebP (format moderne, bien supporté)
 			processed = await this.mediaService.processImage(file.buffer, "webp");
-		} else if (file.mimetype.startsWith("video/")) {
-			// Vidéo -> WebM
+		} else if (
+			file.mimetype.startsWith("video/") ||
+			file.mimetype === "image/gif"
+		) {
+			// Vidéo ou GIF -> WebM
 			processed = await this.mediaService.processVideo(file.buffer, "webm");
 		} else {
 			throw new BadRequestException("Format de fichier non supporté");

backend/src/contents/dto/create-content.dto.ts

@@ -12,11 +12,12 @@ import {
 export enum ContentType {
 	MEME = "meme",
 	GIF = "gif",
+	VIDEO = "video",
 }
 
 export class CreateContentDto {
 	@IsEnum(ContentType)
-	type!: "meme" | "gif";
+	type!: "meme" | "gif" | "video";
 
 	@IsString()
 	@IsNotEmpty()

backend/src/contents/dto/upload-content.dto.ts

@@ -11,7 +11,7 @@ import { ContentType } from "./create-content.dto";
 
 export class UploadContentDto {
 	@IsEnum(ContentType)
-	type!: "meme" | "gif";
+	type!: "meme" | "gif" | "video";
 
 	@IsString()
 	@IsNotEmpty()