From 706e67ede63b3ff45707e6299c06b50e94e5ecf4 Mon Sep 17 00:00:00 2001
From: Paul Buetow <paul@buetow.org>
Date: Sun, 12 Mar 2023 18:04:36 +0200
Subject: make meta cache redundant

---
 lib/atomfeed.source.sh | 123 ++++++++++++++++++++-----------------------------
 1 file changed, 51 insertions(+), 72 deletions(-)

(limited to 'lib/atomfeed.source.sh')

diff --git a/lib/atomfeed.source.sh b/lib/atomfeed.source.sh
index 785246d..6be22a2 100644
--- a/lib/atomfeed.source.sh
+++ b/lib/atomfeed.source.sh
@@ -1,37 +1,3 @@
-# Retrieve meta data of a given blog post. Generate new meta info if not yet exists.
-atomfeed::meta () {
-    local -r gmi_file_path="$1"; shift
-    local -r meta_file=$($SED 's|gemtext|meta|; s|.gmi$|.meta|;' <<< "$gmi_file_path")
-
-    log VERBOSE "Generating meta info for post $gmi_file_path"
-
-    local -r meta_dir=$(dirname "$meta_file")
-    if [[ ! -d "$meta_dir" ]]; then
-        mkdir -p "$meta_dir"
-    fi
-
-    if [ ! -f "$meta_file" ]; then
-        # Extract first heading as post title.
-        local title=$($SED -n '/^# / { s/# //; p; q; }' "$gmi_file_path" | tr '"' "'")
-        # Extract first paragraph from Gemtext
-        local summary=$($SED -n '/^[A-Z]/ { p; q; }' "$gmi_file_path" | tr '"' "'")
-        # Extract the date from the file name.
-        local filename_date=$(basename "$gmi_file_path" | cut -d- -f1,2,3)
-        local date=$($DATE --iso-8601=seconds --date "$filename_date $($DATE +%H:%M:%S)")
-
-        cat <<META | tee "$meta_file"
-local meta_date="$date"
-local meta_author="$AUTHOR"
-local meta_email="$EMAIL"
-local meta_title="$title"
-local meta_summary="$summary. .....to read on please visit my site."
-META
-        return
-    fi
-
-    cat "$meta_file"
-}
-
 atomfeed::_from_cache () {
     local -r gmi_file_path="$1"; shift
     local -r cache_file_path="$1"; shift
@@ -82,27 +48,23 @@ atomfeed::content () {
 # Generate an atom.xml feed file.
 atomfeed::generate () {
     local -r gemfeed_dir="$CONTENT_BASE_DIR/gemtext/gemfeed"
+
     if [ ! -d "$gemfeed_dir" ]; then
         return
-    fi
-
-    if [ -n "$CONTENT_FILTER" ]; then
+    elif [ -n "$CONTENT_FILTER" ]; then
         log WARN "Not generating Atom feed in filter mode"
         return
     fi
 
     local -r atom_file="$gemfeed_dir/atom.xml"
-    local -r now=$($DATE --iso-8601=seconds)
 
     log INFO "Generating Atom feed to $atom_file"
     log INFO 'This may takes a while with an empty cache....'
 
-    assert::not_empty now "$now"
-
     cat <<ATOMHEADER > "$atom_file.tmp"
 <?xml version="1.0" encoding="utf-8"?>
 <feed xmlns="http://www.w3.org/2005/Atom">
-    <updated>$now</updated>
+    <updated>$($DATE $DATE_FORMAT)</updated>
     <title>$DOMAIN feed</title>
     <subtitle>$SUBTITLE</subtitle>
     <link href="gemini://$DOMAIN/gemfeed/atom.xml" rel="self" />
@@ -111,37 +73,7 @@ atomfeed::generate () {
 ATOMHEADER
 
     while read -r gmi_file; do
-        # Load cached meta information about the post.
-        source <(atomfeed::meta "$gemfeed_dir/$gmi_file")
-
-        # Get HTML content for the feed
-        local content="$(atomfeed::content "$gemfeed_dir/$gmi_file")"
-
-        assert::not_empty meta_title "$meta_title"
-        assert::not_empty meta_date "$meta_date"
-        assert::not_empty meta_author "$meta_author"
-        assert::not_empty meta_email "$meta_email"
-        assert::not_empty meta_summary "$meta_summary"
-        assert::not_empty content "$content"
-
-        cat <<ATOMENTRY >> "$atom_file.tmp"
-    <entry>
-        <title>$meta_title</title>
-        <link href="gemini://$DOMAIN/gemfeed/$gmi_file" />
-        <id>gemini://$DOMAIN/gemfeed/$gmi_file</id>
-        <updated>$meta_date</updated>
-        <author>
-            <name>$meta_author</name>
-            <email>$meta_email</email>
-        </author>
-        <summary>$meta_summary</summary>
-        <content type="xhtml">
-            <div xmlns="http://www.w3.org/1999/xhtml">
-                $content
-            </div>
-        </content>
-    </entry>
-ATOMENTRY
+        atomfeed::_entry "$gemfeed_dir" "$gmi_file" "$atom_file.tmp"
     done < <(gemfeed::get_posts | head -n $ATOM_MAX_ENTRIES)
 
     cat <<ATOMFOOTER >> "$atom_file.tmp"
@@ -159,6 +91,53 @@ ATOMFOOTER
     fi
 }
 
+atomfeed::_entry () {
+    local -r gemfeed_dir="$1"
+    local -r gmi_file="$2"
+    local -r tmp_atom_file="$3"
+
+    log INFO "Generating Atom feed entry for $gmi_file"
+
+    # Get HTML content for the feed
+    local content="$(atomfeed::content "$gemfeed_dir/$gmi_file")"
+    assert::not_empty content "$content"
+
+    # Extract first heading as post title.
+    local title=$($SED -n '/^# / { s/# //; p; q; }' "$gemfeed_dir/$gmi_file" | tr '"' "'")
+    assert::not_empty title "$title"
+
+    # Extract first paragraph from Gemtext as the summary.
+    local summary=$($SED -n '/^[A-Z]/ { p; q; }' "$gemfeed_dir/$gmi_file" | tr '"' "'")
+    assert::not_empty summary "$summary"
+
+    # Extract the date from the file name.
+    local publishing_date=$($SED -n '/^> Published at / { s/.*Published at //; s/;.*//; p; }' "$gemfeed_dir/$gmi_file")
+    if [ -z "$publishing_date" ]; then
+        publishing_date=$($DATE $DATE_FORMAT -r "$gemfeed_dir/$gmi_file")
+        log WARN "No publishing date specified for $gmi_file, assuming $publishing_date"
+    fi
+    assert::not_empty publishing_date "$publishing_date"
+
+    cat <<ATOMENTRY >> "$tmp_atom_file"
+    <entry>
+        <title>$title</title>
+        <link href="gemini://$DOMAIN/gemfeed/$gmi_file" />
+        <id>gemini://$DOMAIN/gemfeed/$gmi_file</id>
+        <updated>$publishing_date</updated>
+        <author>
+            <name>$AUTHOR</name>
+            <email>$EMAIL</email>
+        </author>
+        <summary>$summary</summary>
+        <content type="xhtml">
+            <div xmlns="http://www.w3.org/1999/xhtml">
+                $content
+            </div>
+        </content>
+    </entry>
+ATOMENTRY
+}
+
 atomfeed::_xmllint () {
     local -r atom_feed="$1"
 
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