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import type { Dal } from "../dal";
import type { Media, NewMedia } from "../db/schema";
import { NotFoundError, ValidationError, ForbiddenError } from "../lib/errors";
export type CreateMediaInput = {
roomId: number;
mediaType: "image" | "video";
filename: string;
originalFilename?: string;
storageKey: string;
thumbnailKey?: string;
width?: number;
height?: number;
fileSize?: number;
durationSeconds?: number;
caption?: string;
altText?: string;
isCover?: boolean;
};
export type UpdateMediaInput = {
caption?: string;
altText?: string;
isCover?: boolean;
};
// Video constraints
const MAX_VIDEO_DURATION_SECONDS = 5 * 60; // 5 minutes
const MAX_VIDEO_FILE_SIZE = 500 * 1024 * 1024; // 500 MB
const MAX_IMAGE_FILE_SIZE = 10 * 1024 * 1024; // 10 MB
export class MediaService {
constructor(private dal: Dal) {}
async getByRoomId(roomId: number): Promise<Media[]> {
return this.dal.media.findByRoomId(roomId);
}
async getById(id: number): Promise<Media> {
const media = await this.dal.media.findById(id);
if (!media) {
throw new NotFoundError("Media", String(id));
}
return media;
}
async create(input: CreateMediaInput): Promise<Media> {
this.validateInput(input);
// Verify room exists
const room = await this.dal.rooms.findById(input.roomId);
if (!room) {
throw new NotFoundError("Room", String(input.roomId));
}
// Auto-assign sort order
const maxSort = await this.dal.media.getMaxSortOrder(input.roomId);
// Check if this is the first media item in the room - make it cover
const mediaCount = await this.dal.media.countByRoomId(input.roomId);
const isCover = input.isCover ?? mediaCount === 0;
// If setting as cover, clear existing cover
if (isCover && mediaCount > 0) {
await this.dal.media.setCoverImage(input.roomId, -1); // Clears existing
}
const mediaData: NewMedia = {
roomId: input.roomId,
mediaType: input.mediaType,
filename: input.filename,
originalFilename: input.originalFilename,
storageKey: input.storageKey,
thumbnailKey: input.thumbnailKey,
width: input.width,
height: input.height,
fileSize: input.fileSize,
durationSeconds: input.durationSeconds,
caption: input.caption,
altText: input.altText,
sortOrder: maxSort + 1,
isCover,
};
return this.dal.media.create(mediaData);
}
async createMany(
roomId: number,
items: Array<Omit<CreateMediaInput, "roomId">>,
): Promise<Media[]> {
// Verify room exists
const room = await this.dal.rooms.findById(roomId);
if (!room) {
throw new NotFoundError("Room", String(roomId));
}
// Validate all items
for (const item of items) {
this.validateInput({ ...item, roomId });
}
const maxSort = await this.dal.media.getMaxSortOrder(roomId);
const existingCount = await this.dal.media.countByRoomId(roomId);
const mediaData: NewMedia[] = items.map((item, idx) => ({
roomId,
mediaType: item.mediaType,
filename: item.filename,
originalFilename: item.originalFilename,
storageKey: item.storageKey,
thumbnailKey: item.thumbnailKey,
width: item.width,
height: item.height,
fileSize: item.fileSize,
durationSeconds: item.durationSeconds,
caption: item.caption,
altText: item.altText,
sortOrder: maxSort + idx + 1,
isCover: existingCount === 0 && idx === 0, // First item becomes cover if room is empty
}));
return this.dal.media.createMany(mediaData);
}
async update(id: number, input: UpdateMediaInput): Promise<Media> {
const media = await this.getById(id);
// If setting as cover, handle cover switching
if (input.isCover === true) {
await this.dal.media.setCoverImage(media.roomId, id);
// Remove isCover from input since we handled it
const { isCover: _, ...restInput } = input;
if (Object.keys(restInput).length === 0) {
return this.getById(id); // Return updated media
}
input = restInput as UpdateMediaInput;
}
const updated = await this.dal.media.update(id, input);
if (!updated) {
throw new NotFoundError("Media", String(id));
}
return updated;
}
async delete(id: number): Promise<void> {
const media = await this.getById(id);
// If deleting cover, assign next item as cover
if (media.isCover) {
const roomMedia = await this.dal.media.findByRoomId(media.roomId);
const nextCover = roomMedia.find((m) => m.id !== id);
if (nextCover) {
await this.dal.media.update(nextCover.id, { isCover: true });
}
}
await this.dal.media.delete(id);
}
/**
* Move media to a different room
*/
async moveToRoom(mediaId: number, newRoomId: number): Promise<Media> {
const media = await this.getById(mediaId);
// Verify new room exists
const newRoom = await this.dal.rooms.findById(newRoomId);
if (!newRoom) {
throw new NotFoundError("Room", String(newRoomId));
}
// Verify both rooms belong to the same project
const oldRoom = await this.dal.rooms.findById(media.roomId);
if (!oldRoom || oldRoom.projectId !== newRoom.projectId) {
throw new ValidationError("Cannot move media between different projects");
}
// If moving the cover, assign new cover in old room
if (media.isCover) {
const roomMedia = await this.dal.media.findByRoomId(media.roomId);
const nextCover = roomMedia.find((m) => m.id !== mediaId);
if (nextCover) {
await this.dal.media.update(nextCover.id, { isCover: true });
}
}
const moved = await this.dal.media.moveToRoom(mediaId, newRoomId);
if (!moved) {
throw new NotFoundError("Media", String(mediaId));
}
return moved;
}
/**
* Verifies that media belongs to a pro's project
*/
async verifyProOwnership(
mediaId: number,
proId: string,
): Promise<Media> {
const media = await this.getById(mediaId);
const room = await this.dal.rooms.findById(media.roomId);
if (!room) {
throw new NotFoundError("Room", String(media.roomId));
}
const project = await this.dal.projects.findById(room.projectId);
if (!project || project.proId !== proId) {
throw new ForbiddenError("Media does not belong to your pro");
}
return media;
}
/**
* Verifies that a room belongs to a pro's project
*/
async verifyRoomOwnership(roomId: number, proId: string): Promise<void> {
const room = await this.dal.rooms.findById(roomId);
if (!room) {
throw new NotFoundError("Room", String(roomId));
}
const project = await this.dal.projects.findById(room.projectId);
if (!project || project.proId !== proId) {
throw new ForbiddenError("Room does not belong to your pro");
}
}
/**
* Reorder media within a room
*/
async reorder(roomId: number, mediaIds: number[]): Promise<void> {
// Verify all media belongs to the room
const existingMedia = await this.dal.media.findByRoomId(roomId);
const existingIds = new Set(existingMedia.map((m) => m.id));
if (mediaIds.length !== existingMedia.length) {
throw new ValidationError(
`All ${existingMedia.length} media items must be included in reorder`,
);
}
const uniqueIds = new Set(mediaIds);
if (uniqueIds.size !== mediaIds.length) {
throw new ValidationError("Duplicate media IDs in reorder request");
}
for (const id of mediaIds) {
if (!existingIds.has(id)) {
throw new ValidationError(
`Media ${id} does not belong to room ${roomId}`,
);
}
}
await this.dal.media.updateSortOrder(mediaIds);
}
/**
* Set cover image for a room
*/
async setCoverImage(roomId: number, mediaId: number): Promise<void> {
// Verify media belongs to room
const media = await this.getById(mediaId);
if (media.roomId !== roomId) {
throw new ValidationError("Media does not belong to this room");
}
await this.dal.media.setCoverImage(roomId, mediaId);
}
private validateInput(input: CreateMediaInput): void {
if (!input.filename?.trim()) {
throw new ValidationError("Filename is required");
}
if (!input.storageKey?.trim()) {
throw new ValidationError("Storage key is required");
}
if (!["image", "video"].includes(input.mediaType)) {
throw new ValidationError("Media type must be 'image' or 'video'");
}
// Validate video constraints
if (input.mediaType === "video") {
if (
input.durationSeconds &&
input.durationSeconds > MAX_VIDEO_DURATION_SECONDS
) {
throw new ValidationError(
`Video duration cannot exceed ${MAX_VIDEO_DURATION_SECONDS / 60} minutes`,
);
}
if (input.fileSize && input.fileSize > MAX_VIDEO_FILE_SIZE) {
throw new ValidationError(
`Video file size cannot exceed ${MAX_VIDEO_FILE_SIZE / (1024 * 1024)} MB`,
);
}
}
// Validate image constraints
if (input.mediaType === "image") {
if (input.fileSize && input.fileSize > MAX_IMAGE_FILE_SIZE) {
throw new ValidationError(
`Image file size cannot exceed ${MAX_IMAGE_FILE_SIZE / (1024 * 1024)} MB`,
);
}
}
}
}
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