From 2934b4b4da3e9bbae15b21e2f7973cb6bbb59009 Mon Sep 17 00:00:00 2001
From: lucperkins <lucperkins@gmail.com>
Date: Wed, 20 Jun 2018 15:55:16 -0700
Subject: [PATCH] Auto _headers file generation logic

---
 config.toml                 | 28 ++++++++++++++++++++++++---
 layouts/index.headers       | 38 +++++++++++++++++++++++++++++++++++++
 netlify.toml                |  3 +--
 netlify_noindex_headers.txt |  3 ---
 4 files changed, 64 insertions(+), 8 deletions(-)
 create mode 100644 layouts/index.headers
 delete mode 100644 netlify_noindex_headers.txt

diff --git a/config.toml b/config.toml
index 08ad4bff74b97..61ef3b4d2cf6b 100644
--- a/config.toml
+++ b/config.toml
@@ -31,14 +31,27 @@ date = ["date", ":filename", "publishDate", "lastmod"]
 
 # Be explicit about the output formats. We (currently) only want an RSS feed for the home page.
 [outputs]
-home = [ "HTML", "RSS"]
+home = [ "HTML", "RSS", "HEADERS" ]
 page = [ "HTML"]
 section = [ "HTML"]
 
+# Add a "text/netlify" media type for auto-generating the _headers file
+[mediaTypes]
+[mediaTypes."text/netlify"]
+suffix = ""
+delimiter = ""
+
 [outputFormats]
 [outputFormats.RSS]
 baseName = "feed"
 
+# _headers file output (uses the template at layouts/index.headers)
+[outputFormats.HEADERS]
+mediatype = "text/netlify"
+baseName = "_headers"
+isPlainText = true
+notAlternative = true
+
 [params]
 
 time_format_blog = "Monday, January 02, 2006"
@@ -56,6 +69,17 @@ currentUrl = "https://kubernetes.io/docs/home/"
 nextUrl = "http://kubernetes-io-vnext-staging.netlify.com/"
 githubWebsiteRepo = "github.com/kubernetes/website"
 
+[params.pushAssets]
+css = [
+  "callouts",
+  "styles",
+  "custom-jekyll/tags"
+]
+js = [
+  "custom-jekyll/tags",
+  "script"
+]
+
 [[params.versions]]
 fullversion = "v1.10.3"
 version = "v1.10"
@@ -91,7 +115,6 @@ githubbranch = "v1.6.8"
 docsbranch = "release-1.6"
 url = "https://v1-6.docs.kubernetes.io"
 
-
 # Language definitions.
 
 [languages]
@@ -108,4 +131,3 @@ languageName ="Chinese"
 weight = 2
 contentDir = "content/cn"
 
-
diff --git a/layouts/index.headers b/layouts/index.headers
new file mode 100644
index 0000000000000..3c7e9913b79aa
--- /dev/null
+++ b/layouts/index.headers
@@ -0,0 +1,38 @@
+{{- $cssFilesFromConfig := .Site.Params.pushAssets.css -}}
+{{- $jsFilesFromConfig := .Site.Params.pushAssets.js -}}
+{{- $pages := .Site.RegularPages -}}
+/*
+  X-Robots-Tag: noindex
+  Link: </images/favicon.png>; rel=preload; as=image
+  {{- range $cssFilesFromConfig -}}
+  {{- $cssUrl := printf "/css/%s.css" . }}
+  Link: <{{ $cssUrl }}>; rel=preload; as=style
+  {{- end -}}
+  {{- range $jsFilesFromConfig -}}
+  {{- $jsUrl := printf "/js/%s.js" . }}
+  Link: <{{ $jsUrl }}>; rel=preload; as=script
+  {{- end -}}
+{{- range $pages }}
+{{- if or (.Params.deprecated) (eq .Params.class "gridPage") (.Params.case_study_styles) (.Params.css) (.Params.js) }}
+{{ .URL }}
+  {{- if .Params.deprecated }}
+  Link: </css/deprecation-warning.css>; rel=preload; as=style
+  {{- end -}}
+  {{- if eq .Params.class "gridPage" }}
+  Link: </css/gridpage.css>; rel=preload; as=style
+  {{- end -}}
+  {{- if .Params.case_study_styles }}
+  Link: </css/case_study_styles.css>; rel=preload; as=style
+  {{- end -}}
+  {{- with .Params.css -}}
+  {{- range (split . ",") }}
+  Link: <{{ trim . " " }}>; rel=preload; as=style
+  {{- end -}}
+  {{- end -}}
+  {{- with .Params.js -}}
+  {{- range (split . ",") }}
+  Link: <{{ trim . " " }}>; rel=preload; as=script
+  {{- end -}}
+  {{- end -}}
+{{- end }}
+{{- end -}}
\ No newline at end of file
diff --git a/netlify.toml b/netlify.toml
index 904f6956c9b0f..13704d0eb274a 100644
--- a/netlify.toml
+++ b/netlify.toml
@@ -1,7 +1,6 @@
 [build]
-# This default build command adds the robots noindex directive to the site headers
 publish = "public"
-command = "hugo && cp netlify_noindex_headers.txt public/_headers"
+command = "hugo"
 
 [context.production.environment]
 HUGO_BASEURL = "https://kubernetes.io/"
diff --git a/netlify_noindex_headers.txt b/netlify_noindex_headers.txt
deleted file mode 100644
index c45a1be4250c0..0000000000000
--- a/netlify_noindex_headers.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-# Prevent bots from indexing site
-/*
-  X-Robots-Tag: noindex