Restructure

src-electron/ipc/download/DownloadQueue.ts

@@ -0,0 +1,51 @@
+import Comparators from 'comparators'
+
+import { emitIPCEvent } from '../../main'
+import { ChartDownload } from './ChartDownload'
+
+export class DownloadQueue {
+
+	private downloadQueue: ChartDownload[] = []
+
+	isDownloadingLink(filesHash: string) {
+		return this.downloadQueue.some(download => download.hash == filesHash)
+	}
+
+	isEmpty() {
+		return this.downloadQueue.length == 0
+	}
+
+	push(chartDownload: ChartDownload) {
+		this.downloadQueue.push(chartDownload)
+		this.sort()
+	}
+
+	shift() {
+		return this.downloadQueue.shift()
+	}
+
+	get(versionID: number) {
+		return this.downloadQueue.find(download => download.versionID == versionID)
+	}
+
+	remove(versionID: number) {
+		const index = this.downloadQueue.findIndex(download => download.versionID == versionID)
+		if (index != -1) {
+			this.downloadQueue[index].cancel()
+			this.downloadQueue.splice(index, 1)
+			emitIPCEvent('queue-updated', this.downloadQueue.map(download => download.versionID))
+		}
+	}
+
+	private sort() {
+		let comparator = Comparators.comparing('allFilesProgress', { reversed: true })
+
+		const prioritizeArchives = true
+		if (prioritizeArchives) {
+			comparator = comparator.thenComparing('isArchive', { reversed: true })
+		}
+
+		this.downloadQueue.sort(comparator)
+		emitIPCEvent('queue-updated', this.downloadQueue.map(download => download.versionID))
+	}
+}