#!/usr/bin/env bash
set -euo pipefail
# Generate site/blog/index.html from blog/*.md frontmatter.
# Reads title, description, date from YAML frontmatter in each post.
# Sorts newest first (by date string — "April 2026" > "March 2026").
OUT="site/blog/index.html"
# Extract frontmatter fields from a markdown file
extract() {
local file="$1" field="$2"
sed -n '/^---$/,/^---$/p' "$file" | grep "^${field}:" | sed "s/^${field}: *//"
}
# Collect posts: "date|name|title|description" per line
posts=""
sources="blog/*.md"
if [ "${BLOG_INCLUDE_DRAFTS:-}" = "1" ] && ls drafts/*.md >/dev/null 2>&1; then
sources="blog/*.md drafts/*.md"
fi
for f in $sources; do
name=$(basename "$f" .md)
title=$(extract "$f" title)
desc=$(extract "$f" description)
date=$(extract "$f" date)
posts+="${date}|${name}|${title}|${desc}"$'\n'
done
# Sort by ISO date (YYYY-MM-DD), newest first
posts=$(echo "$posts" | grep -v '^$' | sort -t'|' -k1 -r)
# Format ISO date (YYYY-MM-DD) to "Month YYYY"
format_date() {
local months=(January February March April May June July August September October November December)
local y="${1%%-*}"
local m="${1#*-}"; m="${m%%-*}"; m=$((10#$m))
echo "${months[$((m-1))]} $y"
}
# Generate post list items
items=""
while IFS='|' read -r date name title desc; do
display_date=$(format_date "$date")
items+="