From 62d762a8c73cb4f4ac3c8a09cbb7481886db1300 Mon Sep 17 00:00:00 2001
From: Timur Demin <tdemin@users.noreply.github.com>
Date: Sat, 25 Dec 2021 21:55:31 +0500
Subject: [PATCH] Pass .Metadata to directory index pages

This makes gmnhg pass .Metadata while rendering directory and top-level
indexes, allowing the user to use page metadata keys for things like
page title instead of resorting to formatting with the page content.

.Metadata is omitted while rendering RSS indexes for now, because it
doesn't seem to make much sense for it to be there.

Fixes #39.
---
 cmd/gmnhg/main.go | 32 ++++++++++++++++++--------------
 1 file changed, 18 insertions(+), 14 deletions(-)

diff --git a/cmd/gmnhg/main.go b/cmd/gmnhg/main.go
index 31c0e47..7e4c467 100644
--- a/cmd/gmnhg/main.go
+++ b/cmd/gmnhg/main.go
@@ -54,7 +54,8 @@
 // internal/gmnhg/post.go), .Dirname, which is the directory name
 // relative to the content dir, .Link, which contains the index filename
 // relative to the content dir (with .md replaced with .gmi), .Content,
-// which is rendered from directory's _index.gmi.md, and .Site, which
+// which is rendered from directory's _index.gmi.md, .Metadata, which
+// contains metadata crawled from _index.gmi.md, and .Site, which
 // contains site-level configuration data loaded from the Hugo site's
 // config.toml, config.yaml, or config.json.
 //
@@ -67,8 +68,9 @@
 // and leaf bundles), with the exception of leaf resource pages. This
 // allows for roll-up indices.
 //
-// 3. RSS templates receive the same data as directory index pages, but
-// the filename provided by .Link is rss.xml instead of index.gmi.
+// 3. RSS templates receive the same data as directory index pages
+// (except for .Metadata), but the filename provided by .Link is rss.xml
+// instead of index.gmi.
 //
 // This program provides some extra template functions on top of sort:
 //
@@ -446,11 +448,12 @@ func main() {
 			"LanguageCode": siteConf.LanguageCode,
 		}
 		cnt := map[string]interface{}{
-			"Posts":   posts,
-			"Dirname": dirname,
-			"Link":    path.Join(dirname, indexFilename),
-			"Content": gemtext,
-			"Site":    sc,
+			"Posts":    posts,
+			"Dirname":  dirname,
+			"Link":     path.Join(dirname, indexFilename),
+			"Content":  gemtext,
+			"Site":     sc,
+			"Metadata": metadata,
 		}
 		buf := bytes.Buffer{}
 		if err := tmpl.Execute(&buf, cnt); err != nil {
@@ -469,7 +472,7 @@ func main() {
 	if err != nil {
 		panic(err)
 	}
-	content, _ := gmnhg.ParseMetadata(indexContent)
+	content, metadata := gmnhg.ParseMetadata(indexContent)
 	gemtext, err := gemini.RenderMarkdown(content, gemini.Defaults)
 	if err != nil {
 		panic(err)
@@ -483,11 +486,12 @@ func main() {
 		"LanguageCode": siteConf.LanguageCode,
 	}
 	cnt := map[string]interface{}{
-		"Posts":   topLevelPosts,
-		"Dirname": "/",
-		"Link":    path.Join("/", indexFilename),
-		"Content": gemtext,
-		"Site":    sc,
+		"Posts":    topLevelPosts,
+		"Dirname":  "/",
+		"Link":     path.Join("/", indexFilename),
+		"Content":  gemtext,
+		"Site":     sc,
+		"Metadata": metadata,
 	}
 	buf := bytes.Buffer{}
 	if err := indexTmpl.Execute(&buf, cnt); err != nil {