53 lines
		
	
	
		
			1.6 KiB
		
	
	
	
		
			TypeScript
		
	
	
	
	
	
			
		
		
	
	
			53 lines
		
	
	
		
			1.6 KiB
		
	
	
	
		
			TypeScript
		
	
	
	
	
	
import { FilePath, joinSegments, resolveRelative, simplifySlug } from "../../util/path"
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import { QuartzEmitterPlugin } from "../types"
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import { write } from "./helpers"
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import DepGraph from "../../depgraph"
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import { getAliasSlugs } from "../transformers/frontmatter"
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export const AliasRedirects: QuartzEmitterPlugin = () => ({
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  name: "AliasRedirects",
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  async getDependencyGraph(ctx, content, _resources) {
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    const graph = new DepGraph<FilePath>()
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    const { argv } = ctx
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    for (const [_tree, file] of content) {
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      for (const slug of getAliasSlugs(file.data.frontmatter?.aliases ?? [], argv, file)) {
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        graph.addEdge(file.data.filePath!, joinSegments(argv.output, slug + ".html") as FilePath)
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      }
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    }
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    return graph
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  },
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  async emit(ctx, content, _resources): Promise<FilePath[]> {
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    const fps: FilePath[] = []
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    for (const [_tree, file] of content) {
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      const ogSlug = simplifySlug(file.data.slug!)
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      for (const slug of file.data.aliases ?? []) {
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        const redirUrl = resolveRelative(slug, file.data.slug!)
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        const fp = await write({
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          ctx,
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          content: `
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            <!DOCTYPE html>
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            <html lang="en-us">
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            <head>
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            <title>${ogSlug}</title>
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            <link rel="canonical" href="${redirUrl}">
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            <meta name="robots" content="noindex">
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            <meta charset="utf-8">
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            <meta http-equiv="refresh" content="0; url=${redirUrl}">
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            </head>
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            </html>
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            `,
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          slug,
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          ext: ".html",
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        })
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        fps.push(fp)
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      }
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    }
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    return fps
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  },
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})
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