feat(server): implemented getChartTracks api; feat(server): added some error helpers

server/src/helpers/errors.ts

@@ -0,0 +1,11 @@
+export const logError = (console: any) => (errorText: string) => console.error(`[deemix-server]: ${errorText}`)
+export const consoleError = logError(console)
+
+export class BadRequestError extends Error {
+	constructor() {
+		super()
+		this.message = 'Bad request!'
+	}
+}
+
+export const isBadRequestError = (error: any) => error instanceof BadRequestError

server/src/helpers/primitive-checks.ts

@@ -0,0 +1 @@
+export const isObjectEmpy = (obj: any) => Object.keys(obj).length === 0

server/src/routes/api/get/getChartTracks.ts

@@ -0,0 +1,39 @@
+import { RequestHandler } from 'express'
+import { ApiHandler } from '../../../types'
+import { dz } from '../../../main'
+import { isObjectEmpy } from '../../../helpers/primitive-checks'
+import { BadRequestError, consoleError, isBadRequestError } from '../../../helpers/errors'
+
+export interface RawChartTracksQuery {
+	id: string
+	index?: number
+	limit?: number
+}
+
+const path: ApiHandler['path'] = '/get-chart-tracks'
+
+const handler: RequestHandler<{}, {}, {}, RawChartTracksQuery> = async (req, res, next) => {
+	try {
+		if (isObjectEmpy(req.query) || !req.query.id) {
+			throw new BadRequestError()
+		}
+
+		const playlistId = req.query.id
+		const index = req.query.index
+		const limit = req.query.limit
+
+		const response = await dz.api.get_playlist_tracks(playlistId, { index, limit })
+		res.status(200).send(response)
+		next()
+	} catch (error) {
+		if (isBadRequestError(error)) {
+			consoleError(error.message)
+			res.status(400).send()
+			return next()
+		}
+	}
+}
+
+const apiHandler: ApiHandler = { path, handler }
+
+export default apiHandler

server/src/routes/api/get/index.ts

@@ -4,5 +4,6 @@ import mainSearch from './mainSearch'
 import search from './search'
 import getTracklist from './getTracklist'
 import albumSearch from './albumSearch'
+import getChartTracks from './getChartTracks'
 
-export default [albumSearch, getHome, getCharts, mainSearch, search, getTracklist]
+export default [albumSearch, getHome, getCharts, getChartTracks, mainSearch, search, getTracklist]