Method getMetaDataFromLink

lib/handlers/route-api.ts:236–307

(req: express.Request, link: ExpandedShortLink | null, config: any)

    }

    getMetaDataFromLink(req: express.Request, link: ExpandedShortLink | null, config: any) {
        const metadata: ShortLinkMetaData = {
            ogTitle: 'Compiler Explorer',
        };

        if (link) {
            if (link.specialMetadata) {
                metadata.ogDescription = link.specialMetadata.description.S;
                metadata.ogAuthor = link.specialMetadata.author.S;
                metadata.ogTitle = link.specialMetadata.title.S;
            }

            if (link.created) metadata.ogCreated = link.created;
        }

        if (!metadata.ogDescription) {
            let lang: Language | undefined;
            let source = '';

            const sources = utils.glGetMainContents(config.content);
            if (sources.editors.length === 1) {
                const editor = sources.editors[0];
                lang = unwrap(this.apiHandler).languages[editor.language];
                source = editor.source;
            } else {
                const normalizer = new ClientStateNormalizer();
                normalizer.fromGoldenLayout(config);
                const clientstate = normalizer.normalized;

                if (clientstate.trees && clientstate.trees.length === 1) {
                    const tree = clientstate.trees[0];
                    lang = unwrap(this.apiHandler).languages[tree.compilerLanguageId];

                    if (tree.isCMakeProject) {
                        const firstSource = tree.files.find(file => {
                            return file.filename?.startsWith('CMakeLists.txt');
                        });

                        if (firstSource) {
                            source = firstSource.content;
                        }
                    } else {
                        const firstSource = tree.files.find(file => {
                            return file.filename?.startsWith('example.');
                        });

                        if (firstSource) {
                            source = firstSource.content;
                        }
                    }
                }
            }

            if (lang) {
                metadata.ogDescription = this.filterCode(req, source, lang);
                metadata.ogTitle += ` - ${lang.name}`;
                if (sources && sources.compilers.length === 1) {
                    const compilerId = sources.compilers[0].compiler;