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
import satori, { SatoriOptions } from "../deps/satori.ts";import { create } from "../deps/sharp.ts";import Cache from "../core/cache.ts";import { posix } from "../deps/path.ts";import { resolveInclude } from "../core/utils/path.ts";import { merge } from "../core/utils/object.ts";import { read } from "../core/utils/read.ts";import { Page } from "../core/file.ts";import loader from "../core/loaders/module.ts";
import type { React } from "../deps/react.ts";import "../types.ts";
export interface Options {  /** The list of extensions this plugin applies to */  extensions?: string[];
  /**   * Custom includes path to load the layout   * @default `site.options.includes`   */  includes?: string;
  /** The cache folder */  cache: string | boolean;
  /**   * The options for Satory to generate the SVG image.   * @see https://github.com/vercel/satori   */  satori?: SatoriOptions;}
export const defaults: Options = {  extensions: [".html"],  cache: true,  satori: {    width: 1200,    height: 600,    fonts: [],  },};
export default function (userOptions?: Options) {  return (site: Lume.Site) => {    const options = merge(      { ...defaults, includes: site.options.includes },      userOptions,    );
    // Configure the cache folder    const cacheFolder = options.cache === true ? "_cache" : options.cache;    const cache = cacheFolder      ? new Cache({ folder: site.src(cacheFolder) })      : undefined;
    if (cacheFolder) {      site.ignore(cacheFolder);      site.options.watcher.ignore.push(cacheFolder);    }
    site.process(options.extensions, async (pages, allPages) => {      if (!options.satori.fonts.length) {        options.satori.fonts.push(...await defaultFonts());      }
      for (const page of pages) {        const { data } = page;        const layout = data.openGraphLayout;
        if (!layout) {          continue;        }
        const layoutPath = resolveInclude(          layout,          options.includes,          posix.dirname(page.sourcePath),        );
        const entry = site.fs.entries.get(layoutPath);
        if (!entry) {          throw new Error(`The layout file "${layoutPath}" doesn't exist`);        }
        const layoutData = await entry.getContent(loader);        const template = layoutData.content;
        if (typeof template !== "function") {          throw new Error(            `The layout file "${layoutPath}" doesn't have a default export`,          );        }
        const jsx = await template(data);        const content = await render(jsx);        const url = page.outputPath.replace(/\.html$/, ".png");
        allPages.push(Page.create({ url, content }));
        if (!data.metas) {          data.metas = {};        }
        data.metas.image = url;      }    });
    async function render(      jsx: React.ReactNode,    ): Promise<Uint8Array | undefined> {      if (cache) {        const result = await cache.get(new Uint8Array(), jsx);
        if (result) {          return result;        }      }
      const svg = await satori(jsx, options.satori);      const content = await (await create(svg)).toBuffer();
      if (cache) {        await cache.set(new Uint8Array(), jsx, content);      }
      return content;    }  };}
async function defaultFonts(): Promise<SatoriOptions["fonts"]> {  return [    {      name: "inter",      weight: 400,      style: "normal",      data: await read(        "https://cdn.jsdelivr.net/npm/@xz/fonts@1/serve/src/inter/Inter-Regular.woff",        true,      ),    },    {      name: "inter",      weight: 700,      style: "normal",      data: await read(        "https://cdn.jsdelivr.net/npm/@xz/fonts@1/serve/src/inter/Inter-SemiBold.woff",        true,      ),    },  ];}
/** Extends Data interface */declare global {  namespace Lume {    export interface Data {      /**       * The layout to generate the Open Graph Image       * @see https://lume.land/plugins/og_image/       */      openGraphLayout?: string;    }  }}