91 lines
2.4 KiB
TypeScript
91 lines
2.4 KiB
TypeScript
import { type NextMiddleware, NextResponse } from "next/server"
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import { notFound } from "@/server/errors/next"
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import { findLang } from "@/utils/languages"
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import { removeTrailingSlash } from "@/utils/url"
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import { fetchAndCacheEntry, getDefaultRequestHeaders } from "./utils"
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import type { MiddlewareMatcher } from "@/types/middleware"
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export const middleware: NextMiddleware = async (request) => {
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const { nextUrl } = request
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const lang = findLang(nextUrl.pathname)!
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const pathWithoutTrailingSlash = removeTrailingSlash(nextUrl.pathname)
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const contentTypePathName = pathWithoutTrailingSlash.replace(`/${lang}`, "")
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const isPreview = request.nextUrl.pathname.includes("/preview")
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const searchParams = new URLSearchParams(request.nextUrl.searchParams)
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const { contentType, uid } = await fetchAndCacheEntry(
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isPreview
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? contentTypePathName.replace("/preview", "")
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: contentTypePathName,
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lang
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)
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if (!contentType || !uid) {
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throw notFound(
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`Unable to resolve CMS entry for locale "${lang}": ${contentTypePathName}`
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)
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}
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const headers = getDefaultRequestHeaders(request)
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headers.set("x-uid", uid)
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headers.set("x-contenttype", contentType)
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const isCurrent = contentType ? contentType.indexOf("current") >= 0 : false
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if (isPreview) {
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searchParams.set("isPreview", "true")
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return NextResponse.rewrite(
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new URL(
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`/${lang}/${contentType}/${uid}?${searchParams.toString()}`,
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nextUrl
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),
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{
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request: {
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headers,
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},
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}
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)
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}
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if (isCurrent) {
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searchParams.set("uid", uid)
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searchParams.set("uri", contentTypePathName)
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return NextResponse.rewrite(
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new URL(
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`/${lang}/current-content-page?${searchParams.toString()}`,
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nextUrl
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),
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{
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request: {
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headers,
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},
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}
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)
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}
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return NextResponse.rewrite(
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new URL(
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`/${lang}/${contentType}/${uid}?${searchParams.toString()}`,
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nextUrl
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),
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{
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request: {
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headers,
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},
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}
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)
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}
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export const matcher: MiddlewareMatcher = (request) => {
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// Do not process paths with file extension.
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// Only looking for dot might be too brute force/give false positives.
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// It works right now but adjust accordingly when new use cases/data emerges.
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const lastPathnameSegment = request.nextUrl.pathname.split("/").pop()
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return lastPathnameSegment?.indexOf(".") === -1
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}
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