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env.ts
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env.ts
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import { NextRequest } from "next/server"
import type { headers } from "next/headers"
import type { NextAuthConfig } from "./index.js"
export function setEnvDefaults(config: NextAuthConfig) {
config.secret ??= process.env.AUTH_SECRET ?? process.env.NEXTAUTH_SECRET
config.trustHost ??= !!(
process.env.AUTH_URL ??
process.env.NEXTAUTH_URL ??
process.env.AUTH_TRUST_HOST ??
process.env.VERCEL ??
process.env.NODE_ENV !== "production"
)
config.redirectProxyUrl ??= process.env.AUTH_REDIRECT_PROXY_URL
config.providers = config.providers.map((p) => {
const finalProvider = typeof p === "function" ? p({}) : p
if (finalProvider.type === "oauth" || finalProvider.type === "oidc") {
const ID = finalProvider.id.toUpperCase()
finalProvider.clientId ??= process.env[`AUTH_${ID}_ID`]
finalProvider.clientSecret ??= process.env[`AUTH_${ID}_SECRET`]
if (finalProvider.type === "oidc") {
finalProvider.issuer ??= process.env[`AUTH_${ID}_ISSUER`]
}
}
return finalProvider
})
}
/**
* Extract the origin from `NEXTAUTH_URL` or `AUTH_URL`
* environment variables, or the request's headers.
*/
export function detectOrigin(h: Headers | ReturnType<typeof headers>) {
const url = process.env.AUTH_URL ?? process.env.NEXTAUTH_URL
if (url) return new URL(url)
const host = h.get("x-forwarded-host") ?? h.get("host")
const protocol = h.get("x-forwarded-proto") === "http" ? "http" : "https"
return new URL(`${protocol}://${host}`)
}
/** If `NEXTAUTH_URL` or `AUTH_URL` is defined, override the request's URL. */
export function reqWithEnvUrl(req: NextRequest): NextRequest {
const url = process.env.AUTH_URL ?? process.env.NEXTAUTH_URL
if (!url) return req
const nonBase = req.nextUrl.href.replace(req.nextUrl.origin, "")
const base = new URL(url).origin
// REVIEW: Bug in Next.js?: TypeError: next_dist_server_web_exports_next_request__WEBPACK_IMPORTED_MODULE_0__ is not a constructor
// return new NextRequest(new URL(nonBase, base), req)
const _url = new URL(nonBase, base)
const _req = new Request(_url, req) as any
_req.nextUrl = _url
return _req
}