refactor: isPathExists

cloudflare-workers/src/administration.ts

@@ -1,4 +1,4 @@
-import { getComment, getMeta, getPaths, setMeta, setPath, updateCommentOffsets } from './db';
+import { getComment, getMeta, getPaths, isPathExists, setMeta, setPath, updateCommentOffsets } from './db';
 import { ModifiedCommentBody } from './types';
 
 type Replacement = {
@@ -49,20 +49,19 @@ export async function renameComments(env: Env, oldPath: string, newPath: string)
 		throw new Error('The path you want to rename from and to are the same');
 	}
 
-	const paths = await getPaths(env);
-	if (!paths.includes(oldPath)) {
+	const [oldPathExists, newPathExists] = await isPathExists(env, oldPath, newPath);
+	if (!oldPathExists) {
 		return;
 	}
-	if (paths.includes(newPath)) {
+	if (newPathExists) {
 		throw new Error('The path you want to rename to already exists');
 	}
 
 	await setPath(env, oldPath, newPath);
 }
 
 export async function modifyComments(env: Env, path: string, diff: ModifiedCommentBody['diff']) {
-	const paths = await getPaths(env);
-	if (!paths.includes(path)) {
+	if (!(await isPathExists(env, path))) {
 		throw new Error('The path you want to modify does not exist');
 	}
 

cloudflare-workers/src/db.ts

@@ -86,6 +86,27 @@ export async function setPath(env: Env, oldPath: string, newPath: string) {
 	await db.prepare('UPDATE pages SET path = ? WHERE path = ?').bind(newPath, oldPath).run();
 }
 
+export async function isPathExists(env: Env, path: string): Promise<boolean>;
+export async function isPathExists(env: Env, ...path: string[]): Promise<boolean[]>;
+export async function isPathExists(env: Env, ...path: string[]): Promise<boolean | boolean[]> {
+	if (typeof path === 'string') {
+		path = [path];
+	}
+
+	const db = env.DB;
+
+	const res = await db
+		.prepare(`SELECT path FROM pages WHERE path IN (${new Array<string>(path.length).fill('?').join(',')})`)
+		.bind(...path)
+		.all<Record<string, string>>();
+
+	if (path.length === 1) {
+		return res.results.length > 0;
+	}
+
+	return path.map((p) => res.results.some((r) => r.path === p));
+}
+
 export async function updateCommentOffsets(
 	env: Env,
 	path: string,