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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,98 +1,63 @@ | ||
| import type { Element, Root } from "hast"; | ||
| import type { Plugin } from "unified"; | ||
| import type { Root } from "hast"; | ||
| import type { Plugin, Transformer } from "unified"; | ||
| import { h } from "hastscript"; | ||
| import { visit } from "unist-util-visit"; | ||
| import { | ||
| buildRequestURL, | ||
| extractCodeByLines, | ||
| extractFilePathFromURL, | ||
| extractLinesFromURL, | ||
| extractRefFromURL, | ||
| extractRepoNameFromURL, | ||
| } from "./util"; | ||
| import { buildRequestURL, extractCodeByLines, extractRepoDataFromURL } from "./utils"; | ||
|
|
||
| interface EmbeddedGithubCode { | ||
| url: string; | ||
| index: number; | ||
| parent: Root | Element; | ||
| } | ||
| type Option = { | ||
| githubPAT: string; | ||
| }; | ||
|
|
||
| const rehypeEmbeddedGithubCode: Plugin<Option[], Root> = (options): Transformer<Root> => { | ||
| const { githubPAT } = options; | ||
|
|
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| const headers = { | ||
| Accept: "application/vnd.github+json", | ||
| Authorization: `Bearer ${githubPAT}`, | ||
| "X-GitHub-Api-Version": "2022-11-28", | ||
| }; | ||
|
|
||
| const rehypeEmbeddedGithubCode: Plugin<[], Root> = () => { | ||
| const embeddedGithubCodes: EmbeddedGithubCode[] = []; | ||
| const githubCodePromises: Promise<void>[] = []; | ||
|
|
||
| return async (tree) => { | ||
| const transform: Transformer<Root> = async (tree) => { | ||
| visit(tree, "element", (node, index, parent) => { | ||
| if ( | ||
| node.tagName !== "a" || | ||
| node.properties["data-remark-target"] !== "remark-embedded-github-code" || | ||
| typeof node.properties.href !== "string" | ||
| ) { | ||
| if (node.tagName !== "a" || node.properties["data-remark"] !== "remark-embedded-github-code") { | ||
| return; | ||
| } | ||
|
|
||
| if (index === undefined || parent === undefined) { | ||
| return; | ||
| } | ||
|
|
||
| if (parent.type !== "root" && parent.type !== "element") { | ||
| return; | ||
| } | ||
|
|
||
| embeddedGithubCodes.push({ | ||
| url: node.properties.href, | ||
| index, | ||
| parent, | ||
| }); | ||
| }); | ||
|
|
||
| await Promise.all( | ||
| embeddedGithubCodes.map(async (embeddedGithubCode) => { | ||
| const repoName = extractRepoNameFromURL(embeddedGithubCode.url); | ||
| const ref = extractRefFromURL(embeddedGithubCode.url); | ||
| const path = extractFilePathFromURL(embeddedGithubCode.url); | ||
| const lines = extractLinesFromURL(embeddedGithubCode.url); | ||
|
|
||
| const githubCodePromise = async (): Promise<void> => { | ||
| const { repoName, ref, path, lines } = extractRepoDataFromURL(String(node.properties.href)); | ||
| const requestUrl = buildRequestURL(repoName, ref, path); | ||
|
|
||
| const response = await fetch(requestUrl, { | ||
| headers: { | ||
| Accept: "application/vnd.github+json", | ||
| Authorization: `Bearer ${process.env.GITHUB_PAT}`, | ||
| "X-GitHub-Api-Version": "2022-11-28", | ||
| }, | ||
| }); | ||
| const content = (await response.json()) as { content: string }; | ||
|
|
||
| const codeBase64 = content.content; | ||
| let code = Buffer.from(codeBase64, "base64").toString("utf-8"); | ||
| if (lines) { | ||
| code = extractCodeByLines(code, lines); | ||
| } | ||
| try { | ||
| const response = await fetch(requestUrl, { headers }); | ||
| if (!response.ok) { | ||
| throw new Error(`Failed to fetch code from GitHub: ${response.status}`); | ||
| } | ||
| const content = (await response.json()) as { content: string }; | ||
| const codeBase64 = content.content; | ||
| const code = extractCodeByLines(Buffer.from(codeBase64, "base64").toString("utf-8"), lines); | ||
|
|
||
| const codeElement: Element = { | ||
| type: "element", | ||
| tagName: "code", | ||
| properties: { | ||
| className: "", | ||
| }, | ||
| children: [ | ||
| { | ||
| type: "text", | ||
| value: code, | ||
| }, | ||
| ], | ||
| }; | ||
| const newElement = h("pre", [h("code", [h(null, [{ type: "text", value: code }])])]); | ||
|
|
||
| const preElement: Element = { | ||
| type: "element", | ||
| tagName: "pre", | ||
| children: [codeElement], | ||
| properties: {}, | ||
| }; | ||
| parent.children[index] = newElement; | ||
| } catch (error) { | ||
| throw new Error("Failed to fetch code from GitHub", { cause: error }); | ||
| } | ||
| }; | ||
| githubCodePromises.push(githubCodePromise()); | ||
| }); | ||
|
|
||
| embeddedGithubCode.parent.children[embeddedGithubCode.index] = preElement; | ||
| }), | ||
| ); | ||
| await Promise.all(githubCodePromises); | ||
| }; | ||
|
|
||
| return transform; | ||
| }; | ||
|
|
||
| export { rehypeEmbeddedGithubCode }; |
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