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| 1 | +import type { NextRequest } from "next/server"; |
| 2 | +import { source } from "@/lib/geistdocs/source"; |
| 3 | + |
| 4 | +export const revalidate = false; |
| 5 | + |
| 6 | +const DOCS_PREFIX_PATTERN = /^\/docs\/?/; |
| 7 | +const WHITESPACE_PATTERN = /\s+/; |
| 8 | + |
| 9 | +type PageNode = { |
| 10 | + title: string; |
| 11 | + description: string; |
| 12 | + url: string; |
| 13 | + type?: string; |
| 14 | + summary?: string; |
| 15 | + prerequisites?: string[]; |
| 16 | + product?: string; |
| 17 | + lastmod?: string; |
| 18 | + children: PageNode[]; |
| 19 | +}; |
| 20 | + |
| 21 | +function buildTree( |
| 22 | + pages: Array<{ |
| 23 | + url: string; |
| 24 | + data: { |
| 25 | + title: string; |
| 26 | + description?: string; |
| 27 | + type?: string; |
| 28 | + summary?: string; |
| 29 | + prerequisites?: string[]; |
| 30 | + product?: string; |
| 31 | + lastModified?: Date; |
| 32 | + }; |
| 33 | + }> |
| 34 | +): PageNode[] { |
| 35 | + const root: PageNode[] = []; |
| 36 | + const map = new Map<string, PageNode>(); |
| 37 | + |
| 38 | + const sorted = [...pages].sort((a, b) => a.url.localeCompare(b.url)); |
| 39 | + |
| 40 | + for (const page of sorted) { |
| 41 | + const node: PageNode = { |
| 42 | + title: page.data.title, |
| 43 | + description: page.data.description ?? "", |
| 44 | + url: page.url, |
| 45 | + type: page.data.type, |
| 46 | + summary: page.data.summary, |
| 47 | + prerequisites: page.data.prerequisites, |
| 48 | + product: page.data.product, |
| 49 | + lastmod: page.data.lastModified |
| 50 | + ? page.data.lastModified.toISOString().split("T")[0] |
| 51 | + : undefined, |
| 52 | + children: [], |
| 53 | + }; |
| 54 | + map.set(page.url, node); |
| 55 | + |
| 56 | + const segments = page.url.split("/").filter(Boolean); |
| 57 | + if (segments.length <= 1) { |
| 58 | + root.push(node); |
| 59 | + } else { |
| 60 | + const parentUrl = `/${segments.slice(0, -1).join("/")}`; |
| 61 | + const parent = map.get(parentUrl); |
| 62 | + if (parent) { |
| 63 | + parent.children.push(node); |
| 64 | + } else { |
| 65 | + root.push(node); |
| 66 | + } |
| 67 | + } |
| 68 | + } |
| 69 | + |
| 70 | + return root; |
| 71 | +} |
| 72 | + |
| 73 | +function inferDocType(url: string, explicitType?: string): string { |
| 74 | + if (explicitType) { |
| 75 | + return explicitType.charAt(0).toUpperCase() + explicitType.slice(1); |
| 76 | + } |
| 77 | + if (url.includes("/getting-started")) { |
| 78 | + return "Guide"; |
| 79 | + } |
| 80 | + if (url.includes("/reference")) { |
| 81 | + return "Reference"; |
| 82 | + } |
| 83 | + if (url.includes("/guides/")) { |
| 84 | + return "Guide"; |
| 85 | + } |
| 86 | + return "Conceptual"; |
| 87 | +} |
| 88 | + |
| 89 | +function extractTopics(url: string, product?: string): string[] { |
| 90 | + const topics: string[] = []; |
| 91 | + if (product) { |
| 92 | + topics.push(product); |
| 93 | + } |
| 94 | + |
| 95 | + const segments = url |
| 96 | + .replace(DOCS_PREFIX_PATTERN, "") |
| 97 | + .split("/") |
| 98 | + .filter(Boolean); |
| 99 | + |
| 100 | + for (const segment of segments) { |
| 101 | + if (!topics.includes(segment)) { |
| 102 | + topics.push(segment); |
| 103 | + } |
| 104 | + if (topics.length >= 3) { |
| 105 | + break; |
| 106 | + } |
| 107 | + } |
| 108 | + |
| 109 | + return topics.slice(0, 3); |
| 110 | +} |
| 111 | + |
| 112 | +function truncateToWords(text: string, maxWords: number): string { |
| 113 | + const words = text.split(WHITESPACE_PATTERN); |
| 114 | + if (words.length <= maxWords) { |
| 115 | + return text; |
| 116 | + } |
| 117 | + return `${words.slice(0, maxWords).join(" ")}...`; |
| 118 | +} |
| 119 | + |
| 120 | +function renderNode( |
| 121 | + node: PageNode, |
| 122 | + indent: number, |
| 123 | + parentTitle?: string |
| 124 | +): string { |
| 125 | + const prefix = " ".repeat(indent); |
| 126 | + const lines: string[] = []; |
| 127 | + |
| 128 | + const segments: string[] = []; |
| 129 | + segments.push(`Type: ${inferDocType(node.url, node.type)}`); |
| 130 | + |
| 131 | + if (node.lastmod) { |
| 132 | + segments.push(`Lastmod: ${node.lastmod}`); |
| 133 | + } |
| 134 | + |
| 135 | + const summary = node.summary || node.description; |
| 136 | + if (summary) { |
| 137 | + segments.push(`Summary: ${truncateToWords(summary, 100)}`); |
| 138 | + } |
| 139 | + |
| 140 | + const prereqs = |
| 141 | + node.prerequisites && node.prerequisites.length > 0 |
| 142 | + ? node.prerequisites.join(", ") |
| 143 | + : parentTitle; |
| 144 | + if (prereqs) { |
| 145 | + segments.push(`Prerequisites: ${prereqs}`); |
| 146 | + } |
| 147 | + |
| 148 | + const topics = extractTopics(node.url, node.product); |
| 149 | + if (topics.length > 0) { |
| 150 | + segments.push(`Topics: ${topics.join(", ")}`); |
| 151 | + } |
| 152 | + |
| 153 | + lines.push( |
| 154 | + `${prefix}- [${node.title}](${node.url}) | ${segments.join(" | ")}` |
| 155 | + ); |
| 156 | + |
| 157 | + for (const child of node.children) { |
| 158 | + lines.push(""); |
| 159 | + lines.push(renderNode(child, indent + 1, node.title)); |
| 160 | + } |
| 161 | + |
| 162 | + return lines.join("\n"); |
| 163 | +} |
| 164 | + |
| 165 | +export const GET = async ( |
| 166 | + _req: NextRequest, |
| 167 | + { params }: RouteContext<"/[lang]/sitemap.md"> |
| 168 | +) => { |
| 169 | + const { lang } = await params; |
| 170 | + const pages = source.getPages(lang); |
| 171 | + |
| 172 | + const tree = buildTree(pages); |
| 173 | + |
| 174 | + const header = `# Documentation Sitemap |
| 175 | +
|
| 176 | +## Purpose |
| 177 | +
|
| 178 | +This file is a high-level semantic index of the documentation. |
| 179 | +It is intended for: |
| 180 | +
|
| 181 | +- LLM-assisted navigation (ChatGPT, Claude, etc.) |
| 182 | +- Quick orientation for contributors |
| 183 | +- Identifying relevant documentation areas during development |
| 184 | +
|
| 185 | +It is not intended to replace individual docs. |
| 186 | +
|
| 187 | +--- |
| 188 | +
|
| 189 | +`; |
| 190 | + |
| 191 | + const body = tree.map((node) => renderNode(node, 0)).join("\n\n"); |
| 192 | + |
| 193 | + return new Response(header + body, { |
| 194 | + headers: { |
| 195 | + "Content-Type": "text/markdown", |
| 196 | + }, |
| 197 | + }); |
| 198 | +}; |
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