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og tag impl

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monoid 2022-08-31 04:56:15 +09:00
parent 826d3d8b74
commit b8cbcb74ef
2 changed files with 61 additions and 3 deletions
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1
index.html
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@ -8,6 +8,7 @@
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="/dist/bundle.css">
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:300,400,500,700&display=swap" />
<!--MetaTag-Outlet-->
</head>
<body>
<div id="root"></div>

63
src/server.ts
View File

@ -17,13 +17,14 @@ import { DocumentAccessor, UserAccessor, TagAccessor } from './model/mod';
import { createComicWatcher } from './diff/watcher/comic_watcher';
import { getTagRounter } from './route/tags';
class ServerApplication{
readonly userController: UserAccessor;
readonly documentController: DocumentAccessor;
readonly tagController: TagAccessor;
readonly diffManger: DiffManager;
readonly app: Koa;
private index_html:Buffer;
private index_html:string;
private constructor(controller:{
userController: UserAccessor,
documentController:DocumentAccessor,
@ -34,7 +35,7 @@ class ServerApplication{
this.diffManger = new DiffManager(this.documentController);
this.app = new Koa();
this.index_html = readFileSync("index.html");
this.index_html = readFileSync("index.html","utf-8");
}
private async setup(){
const setting = get_setting();
@ -66,7 +67,8 @@ class ServerApplication{
router.use('/api/diff',diff_router.routes());
router.use('/api/diff',diff_router.allowedMethods());
this.serve_with_meta_index(router);
this.serve_index(router);
this.serve_static_file(router);
@ -119,6 +121,61 @@ class ServerApplication{
serveindex('/setting');
serveindex('/tags');
}
private serve_with_meta_index(router:Router){
const DocMiddleware = async (ctx: Koa.ParameterizedContext)=>{
const docId = Number.parseInt(ctx.params["id"]);
const doc = await this.documentController.findById(docId,true);
let meta;
if(doc === undefined){
ctx.status = 404;
meta = NotFoundContent();
}
else {
ctx.status = 200;
meta = createOgTagContent(doc.title,doc.tags.join(", "),
`https://aeolian.prelude.duckdns.org/api/doc/${docId}/comic/thumbnail`);
}
const html = makeMetaTagInjectedHTML(this.index_html,meta);
serveHTML(ctx,html);
}
router.get('/doc/:id(\\d+)',DocMiddleware);
function NotFoundContent(){
return createOgTagContent("Not Found Doc","Not Found","");
}
function makeMetaTagInjectedHTML(html:string,tagContent:string){
return html.replace("<!--MetaTag-Outlet-->",tagContent);
}
function serveHTML(ctx: Koa.Context, file: string){
ctx.type = 'html'; ctx.body = file;
const setting = get_setting();
ctx.set('x-content-type-options','no-sniff');
if(setting.mode === "development"){
ctx.set('cache-control','no-cache');
}
else{
ctx.set('cache-control','public, max-age=3600');
}
}
function createMetaTagContent(key: string, value:string){
return `<meta property="${key}" content="${value}">`;
}
function createOgTagContent(title:string,description: string, image: string){
return [createMetaTagContent("og:title",title),
createMetaTagContent("og:type","website"),
createMetaTagContent("og:description",description),
createMetaTagContent("og:image",image),
//createMetaTagContent("og:image:width","480"),
//createMetaTagContent("og:image","480"),
//createMetaTagContent("og:image:type","image/png"),
createMetaTagContent("twitter:card","summary_large_image"),
createMetaTagContent("twitter:title",title),
createMetaTagContent("twitter:description",description),
createMetaTagContent("twitter:image",image),
].join("\n");
}
}
private serve_static_file(router: Router){
const static_file_server = (path:string,type:string) => {
router.get('/'+path,async (ctx,next)=>{