// TODO: this file is located in the client src folder because
// otherwise, Create React App will refuse to compile it.
// Putting it in the server folder or in its own folder makes more sense.

// This file represents the API interface for Mudbase's back-end.
// Each endpoint is described by its endpoint address,
// a request structure, a response structure and
// a checking function which determines request validity.

// Retrieve a list of songs. Basic artist information is included.
export const ListSongsEndpoint = '/song/list';
export interface ListSongsRequest {}
export interface ListSongsResponseItem {
    title: String;
    id: Number;
    artistName: String;
    artistId: Number;
}
export interface ListSongsResponse extends Array<ListSongsResponseItem>{};
export function checkListSongsRequest(req:any): boolean {
    return true;
}

// Retrieve a list of artists.
export const ListArtistsEndpoint = '/artist/list';
export interface ListArtistsRequest {}
export interface ListArtistsResponseItem {
    name: String;
    id: Number;
}
export interface ListArtistsResponse extends Array<ListArtistsResponseItem>{};
export function checkListArtistsRequest(req:any): boolean {
    return true;
}

// Create a new song.
export const CreateSongEndpoint = '/song/create';
export interface CreateSongRequest {
    title: String;
    artistId: Number;
}
export interface CreateSongResponse {
    id: Number;
}
export function checkCreateSongRequest(req:any): boolean {
    return "body" in req &&
    "title" in req.body &&
    "artistId" in req.body;
}

// Create a new artist.
export const CreateArtistEndpoint = '/artist/create';
export interface CreateArtistRequest {
    name: String;
}
export interface CreateArtistResponse {
    id: Number;
}
export function checkCreateArtistRequest(req:any): boolean {
    return "body" in req &&
    "name" in req.body;
}