fix intro vs chap vs appendix

poc.sh

@@ -4,6 +4,7 @@
 main() {
    set -e
    set -o pipefail
+   #set -x
 
    local output="$(mktemp -d)"
    log "$output"
@@ -49,9 +50,14 @@ scrape_book() {
    local f="$(mktemp)"
 
    for chapter in $(list_chapters_in_book "$book_url"); do
-      log chapter=$chapter
+      log scraping book chapter $chapter of $book_url
       scrape_book_chapter "$chapter" > "$f"
-      local title="$(grep -E 'Chapter|Appendix' "$f" | head -n 1 | sed 's/^\#*//' | sed 's/^[ ]*//' | sed 's/[ ]*$//')"
+      log scraping book title from $f
+      local title="$(grep '^\#' "$f" | head -n 1 | sed 's/^\#*//' | sed 's/^[ ]*//' | sed 's/[ ]*$//')"
+      if [ -z "$title" ]; then
+         log "WARNING: NO TITLE FOUND IN $f ($chapter): $(head -n 3 $f)"
+         return 1
+      fi
       mv "$f" "$output"/"$title"
    done
 
@@ -67,6 +73,7 @@ scrape_book_chapter() {
 list_chapters_in_book() {
    local book_url="${1%/}"
    local raw="$(scrape_dndbeyond "$book_url")"
+
    if echo "$raw" | grep -q 'https:..www.dndbeyond.com.compendium[^"]*'; then
       echo "$raw" | grep -o 'https:..www.dndbeyond.com.compendium[^"]*'
    elif echo "$raw" | grep -q "$book_url/"; then
@@ -111,7 +118,12 @@ html_to_markdown() {
       | sed 's/\[\([^]]*\)]\(([^)]*)\)*\({[^}]*}\)*/\1/g' \
       | sed "s/\\\\\([\"']\)/\1/g"
    )"
-   local target="$(echo "$out" | grep -q '^[#]* Appendix' && echo Appendix || echo Chapter)"
+   local target="$(
+      (echo "$out" | grep -q '^##* Appendix' && echo Appendix) \
+      || (echo "$out" | grep -q '^##* Chapter' && echo Chapter) \
+      || (echo "$out" | grep -q '^##* Introduction' && echo Introduction) \
+      || echo Chapter
+   )"
    echo "$out" \
       | sed -e '/^# '"$target"'/p' -e '0,/^# '"$target"'/d'
 }
@@ -122,14 +134,13 @@ rate_limit_1s() {
    mkdir -p "$d"
    local last_run="$(date -r "$d/$name" +%s)"
    local now="$(date +%s)"
-   local interval=3
+   local interval=6
    log "should sleep while $(($(date +%s)-last_run)) < $interval"
    if [ -f "$d/$name" ]; then
       while [ "$(($(date +%s)-last_run))" -lt $interval ]; do
          sleep 1
       done
    fi
-   log "done sleeping"
    touch "$d/$name"
 }