refactoring

Resolve #7779

packages/backend/src/server/api/endpoints/pages/show.ts

@@ -0,0 +1,65 @@
+import $ from 'cafy';
+import define from '../../define';
+import { ApiError } from '../../error';
+import { Pages, Users } from '@/models/index';
+import { ID } from '@/misc/cafy-id';
+import { Page } from '@/models/entities/page';
+
+export const meta = {
+	tags: ['pages'],
+
+	requireCredential: false as const,
+
+	params: {
+		pageId: {
+			validator: $.optional.type(ID),
+		},
+
+		name: {
+			validator: $.optional.str,
+		},
+
+		username: {
+			validator: $.optional.str,
+		},
+	},
+
+	res: {
+		type: 'object' as const,
+		optional: false as const, nullable: false as const,
+		ref: 'Page',
+	},
+
+	errors: {
+		noSuchPage: {
+			message: 'No such page.',
+			code: 'NO_SUCH_PAGE',
+			id: '222120c0-3ead-4528-811b-b96f233388d7'
+		}
+	}
+};
+
+export default define(meta, async (ps, user) => {
+	let page: Page | undefined;
+
+	if (ps.pageId) {
+		page = await Pages.findOne(ps.pageId);
+	} else if (ps.name && ps.username) {
+		const author = await Users.findOne({
+			host: null,
+			usernameLower: ps.username.toLowerCase()
+		});
+		if (author) {
+			page = await Pages.findOne({
+				name: ps.name,
+				userId: author.id
+			});
+		}
+	}
+
+	if (page == null) {
+		throw new ApiError(meta.errors.noSuchPage);
+	}
+
+	return await Pages.pack(page, user);
+});