#!/usr/bin/env bash
# Generate index.html for slide overview
BUILD_DIR="${1:-build}"
cat > "$BUILD_DIR/index.html" << 'HEADER'
223015c - Internettechnologien
223015c
Internettechnologien
HdM Stuttgart - WS 2025/26 - Michael Czechowski
HEADER
# Generate links for each termin (sorted)
for html in $(ls "$BUILD_DIR"/2*.html 2>/dev/null | sort); do
filename=$(basename "$html")
# Extract components from filename
# Format: 2025-12-20-termin-1-geschichte-grundlagen-html.html
date=$(echo "$filename" | grep -oE '^[0-9]{4}-[0-9]{2}-[0-9]{2}')
termin_num=$(echo "$filename" | grep -oE 'termin-[0-9]+' | grep -oE '[0-9]+')
topic_raw=$(echo "$filename" | sed -E 's/^[0-9]{4}-[0-9]{2}-[0-9]{2}-termin-[0-9]+-//' | sed 's/\.html$//')
# Format topic: replace - with space, capitalize
topic=$(echo "$topic_raw" | sed 's/-/ /g' | sed 's/.*/\u&/')
# Format date
if [[ "$date" =~ ^[0-9]{4}-[0-9]{2}-[0-9]{2}$ ]]; then
formatted_date=$(date -d "$date" "+%d.%m.%Y" 2>/dev/null || echo "$date")
else
formatted_date="TBA"
fi
termin_label="Termin $termin_num"
cat >> "$BUILD_DIR/index.html" << LINK
$termin_label
$formatted_date
$topic
LINK
done
cat >> "$BUILD_DIR/index.html" << 'FOOTER'
FOOTER
echo "Generated $BUILD_DIR/index.html"