From c599a304c8882afb5e57610cde324f4fbbf6a74e Mon Sep 17 00:00:00 2001
From: syuilo <Syuilotan@yahoo.co.jp>
Date: Sun, 12 Dec 2021 06:21:48 +0900
Subject: [PATCH] refactor

---
 .../processors/db/export-custom-emojis.ts     | 55 +++++++------------
 .../src/queue/processors/db/export-notes.ts   | 46 ++++++----------
 2 files changed, 37 insertions(+), 64 deletions(-)

diff --git a/packages/backend/src/queue/processors/db/export-custom-emojis.ts b/packages/backend/src/queue/processors/db/export-custom-emojis.ts
index ed0ad249a5..aa13c76638 100644
--- a/packages/backend/src/queue/processors/db/export-custom-emojis.ts
+++ b/packages/backend/src/queue/processors/db/export-custom-emojis.ts
@@ -39,16 +39,20 @@ export async function exportCustomEmojis(job: Bull.Job, done: () => void): Promi
 
 	const metaStream = fs.createWriteStream(metaPath, { flags: 'a' });
 
-	await new Promise<void>((res, rej) => {
-		metaStream.write('[', err => {
-			if (err) {
-				logger.error(err);
-				rej(err);
-			} else {
-				res();
-			}
+	const writeMeta = (text: string): Promise<void> => {
+		return new Promise<void>((res, rej) => {
+			metaStream.write(text, err => {
+				if (err) {
+					logger.error(err);
+					rej(err);
+				} else {
+					res();
+				}
+			});
 		});
-	});
+	};
+
+	await writeMeta('[');
 
 	const customEmojis = await Emojis.find({
 		where: {
@@ -72,34 +76,17 @@ export async function exportCustomEmojis(job: Bull.Job, done: () => void): Promi
 			logger.error(e);
 		}
 
-		await new Promise<void>((res, rej) => {
-			const content = JSON.stringify({
-				id: exportId,
-				downloaded: downloaded,
-				emoji: emoji,
-			});
-			const isFirst = customEmojis.indexOf(emoji) === 0;
-			metaStream.write(isFirst ? content : ',\n' + content, err => {
-				if (err) {
-					logger.error(err);
-					rej(err);
-				} else {
-					res();
-				}
-			});
+		const content = JSON.stringify({
+			id: exportId,
+			downloaded: downloaded,
+			emoji: emoji,
 		});
+		const isFirst = customEmojis.indexOf(emoji) === 0;
+
+		await writeMeta(isFirst ? content : ',\n' + content);
 	}
 
-	await new Promise<void>((res, rej) => {
-		metaStream.write(']', err => {
-			if (err) {
-				logger.error(err);
-				rej(err);
-			} else {
-				res();
-			}
-		});
-	});
+	await writeMeta(']');
 
 	metaStream.end();
 
diff --git a/packages/backend/src/queue/processors/db/export-notes.ts b/packages/backend/src/queue/processors/db/export-notes.ts
index 7220455edc..e64e763513 100644
--- a/packages/backend/src/queue/processors/db/export-notes.ts
+++ b/packages/backend/src/queue/processors/db/export-notes.ts
@@ -34,16 +34,20 @@ export async function exportNotes(job: Bull.Job<DbUserJobData>, done: any): Prom
 
 	const stream = fs.createWriteStream(path, { flags: 'a' });
 
-	await new Promise<void>((res, rej) => {
-		stream.write('[', err => {
-			if (err) {
-				logger.error(err);
-				rej(err);
-			} else {
-				res();
-			}
+	const write = (text: string): Promise<void> => {
+		return new Promise<void>((res, rej) => {
+			stream.write(text, err => {
+				if (err) {
+					logger.error(err);
+					rej(err);
+				} else {
+					res();
+				}
+			});
 		});
-	});
+	};
+
+	await write('[');
 
 	let exportedNotesCount = 0;
 	let cursor: Note['id'] | null = null;
@@ -73,17 +77,8 @@ export async function exportNotes(job: Bull.Job<DbUserJobData>, done: any): Prom
 				poll = await Polls.findOneOrFail({ noteId: note.id });
 			}
 			const content = JSON.stringify(serialize(note, poll));
-			await new Promise<void>((res, rej) => {
-				const isFirst = exportedNotesCount === 0;
-				stream.write(isFirst ? content : ',\n' + content, err => {
-					if (err) {
-						logger.error(err);
-						rej(err);
-					} else {
-						res();
-					}
-				});
-			});
+			const isFirst = exportedNotesCount === 0;
+			await write(isFirst ? content : ',\n' + content);
 			exportedNotesCount++;
 		}
 
@@ -94,16 +89,7 @@ export async function exportNotes(job: Bull.Job<DbUserJobData>, done: any): Prom
 		job.progress(exportedNotesCount / total);
 	}
 
-	await new Promise<void>((res, rej) => {
-		stream.write(']', err => {
-			if (err) {
-				logger.error(err);
-				rej(err);
-			} else {
-				res();
-			}
-		});
-	});
+	await write(']');
 
 	stream.end();
 	logger.succ(`Exported to: ${path}`);