summaryrefslogtreecommitdiff
path: root/packages/integrations/sitemap/src/index.ts
blob: 46ff694fd6195807a398271bb34a72b687a2f075 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
import type { AstroConfig, AstroIntegration } from 'astro';
import {
	EnumChangefreq,
	simpleSitemapAndIndex,
	type LinkItem as LinkItemBase,
	type SitemapItemLoose,
} from 'sitemap';
import { fileURLToPath } from 'url';
import { ZodError } from 'zod';

import { generateSitemap } from './generate-sitemap.js';
import { Logger } from './utils/logger.js';
import { validateOptions } from './validate-options.js';

export { EnumChangefreq as ChangeFreqEnum } from 'sitemap';
export type ChangeFreq = `${EnumChangefreq}`;
export type SitemapItem = Pick<
	SitemapItemLoose,
	'url' | 'lastmod' | 'changefreq' | 'priority' | 'links'
>;
export type LinkItem = LinkItemBase;

export type SitemapOptions =
	| {
			filter?(page: string): boolean;
			customPages?: string[];

			i18n?: {
				defaultLocale: string;
				locales: Record<string, string>;
			};
			// number of entries per sitemap file
			entryLimit?: number;

			// sitemap specific
			changefreq?: ChangeFreq;
			lastmod?: Date;
			priority?: number;

			// called for each sitemap item just before to save them on disk, sync or async
			serialize?(item: SitemapItem): SitemapItem | Promise<SitemapItem | undefined> | undefined;
	  }
	| undefined;

function formatConfigErrorMessage(err: ZodError) {
	const errorList = err.issues.map((issue) => ` ${issue.path.join('.')}  ${issue.message + '.'}`);
	return errorList.join('\n');
}

const PKG_NAME = '@astrojs/sitemap';
const OUTFILE = 'sitemap-index.xml';

const createPlugin = (options?: SitemapOptions): AstroIntegration => {
	let config: AstroConfig;
	const logger = new Logger(PKG_NAME);

	return {
		name: PKG_NAME,

		hooks: {
			'astro:config:done': async ({ config: cfg }) => {
				config = cfg;
			},

			'astro:build:done': async ({ dir, routes, pages }) => {
				try {
					if (!config.site) {
						logger.warn(
							'The Sitemap integration requires the `site` astro.config option. Skipping.'
						);
						return;
					}

					const opts = validateOptions(config.site, options);

					const { filter, customPages, serialize, entryLimit } = opts;

					let finalSiteUrl: URL;
					if (config.site) {
						finalSiteUrl = new URL(config.base, config.site);
					} else {
						// eslint-disable-next-line no-console
						console.warn(
							'The Sitemap integration requires the `site` astro.config option. Skipping.'
						);
						return;
					}

					let pageUrls = pages.map((p) => {
						if (p.pathname !== '' && !finalSiteUrl.pathname.endsWith('/'))
							finalSiteUrl.pathname += '/';
						const path = finalSiteUrl.pathname + p.pathname;
						return new URL(path, finalSiteUrl).href;
					});

					let routeUrls = routes.reduce<string[]>((urls, r) => {
						/**
						 * Dynamic URLs have entries with `undefined` pathnames
						 */
						if (r.pathname) {
							/**
							 * remove the initial slash from relative pathname
							 * because `finalSiteUrl` always has trailing slash
							 */
							const path = finalSiteUrl.pathname + r.generate(r.pathname).substring(1);

							let newUrl = new URL(path, finalSiteUrl).href;

							if (config.trailingSlash === 'never') {
								urls.push(newUrl);
							} else if (config.build.format === 'directory' && !newUrl.endsWith('/')) {
								urls.push(newUrl + '/');
							} else {
								urls.push(newUrl);
							}
						}

						return urls;
					}, []);

					try {
						if (filter) {
							pageUrls = pageUrls.filter(filter);
						}
					} catch (err) {
						logger.error(`Error filtering pages\n${(err as any).toString()}`);
						return;
					}

					pageUrls = Array.from(new Set([...pageUrls, ...routeUrls, ...(customPages ?? [])]));

					if (pageUrls.length === 0) {
						logger.warn(`No pages found!\n\`${OUTFILE}\` not created.`);
						return;
					}

					let urlData = generateSitemap(pageUrls, finalSiteUrl.href, opts);

					if (serialize) {
						try {
							const serializedUrls: SitemapItem[] = [];
							for (const item of urlData) {
								const serialized = await Promise.resolve(serialize(item));
								if (serialized) {
									serializedUrls.push(serialized);
								}
							}
							if (serializedUrls.length === 0) {
								logger.warn('No pages found!');
								return;
							}
							urlData = serializedUrls;
						} catch (err) {
							logger.error(`Error serializing pages\n${(err as any).toString()}`);
							return;
						}
					}

					await simpleSitemapAndIndex({
						hostname: finalSiteUrl.href,
						destinationDir: fileURLToPath(dir),
						sourceData: urlData,
						limit: entryLimit,
						gzip: false,
					});
					logger.success(`\`${OUTFILE}\` is created.`);
				} catch (err) {
					if (err instanceof ZodError) {
						logger.warn(formatConfigErrorMessage(err));
					} else {
						throw err;
					}
				}
			},
		},
	};
};

export default createPlugin;