#!/bin/bash

##
## Just-the-Facts (JTF) blog posts. A post lives in a directory holding
## outline.org (outline, corrections, guardrails, resources, sources); generate turns it
## into a Blogger-ready post.html via claude. Push with bloggerassist.
##

CMD=$(basename $0)
TMP=$HOME/.tmp/$CMD ; mkdir -p $TMP

TENTEN_DIR=$(dirname "$(dirname "$(realpath "${BASH_SOURCE[0]}")")")
LIBEXEC="$TENTEN_DIR/libexec/$CMD"

. "$TENTEN_DIR/config/$CMD/default.config"
[ -f "$HOME/.config/$CMD/default.config" ] && . "$HOME/.config/$CMD/default.config"

usage() {
  echo "Usage: $CMD -a new -n title [-d dir]"
  echo "       $CMD -a generate [-d dir] [-K]"
  echo "       $CMD -a revise [-d dir]"
  echo "       $CMD -a add-image -f image [-d dir] [-G]"
  echo "       $CMD -a preview [-d dir] [-t tab] [-L]"
  echo
  echo "Actions:"
  echo "  new       Create dir/outline.org for a post titled title"
  echo "  generate  Write dir/post.html (and dir/notes.txt) from dir/outline.org"
  echo "  revise    Update dir/post.html to match an edited outline.org, keeping the rest of the draft"
  echo "  add-image Upload image (full, web and thumbnail sizes) and add its URL to Images, or Gallery with -G"
  echo "  preview   Push dir/post.html as a Blogger draft and show Blogger's preview in Chrome"
  echo
  echo "Options:"
  echo "  -d dir    Post directory, e.g. projects/travel/denver-2026/posts/day-03 (default: .)"
  echo "  -n title  Post title (new)"
  echo "  -f image  Local image file (add-image)"
  echo "  -G        Add to the end-of-post Gallery instead of the top-of-post Images (add-image)"
  echo "  -K        Keep the existing post body; rebuild only the banner, resources and outline block (generate)"
  echo "  -L        Preview the local file instead of pushing (preview)"
  echo "  -t tab    Open the preview in a new tab next to this one: an id, or text matched against its title or URL (preview; default: JTF_PREVIEW_TAB)"
  exit 1
}

file_url() {
  if [ -n "$WSL_DISTRO_NAME" ]; then
    echo "file://wsl.localhost/$WSL_DISTRO_NAME$1"
  else
    echo "file://$1"
  fi
}

unset ACTION TITLE TAB LOCAL KEEP IMAGE GALLERY
DIR=.
while getopts ":ha:d:n:t:f:LKG" o; do
  case "$o" in
    a) ACTION=$OPTARG ;;
    d) DIR=$OPTARG ;;
    n) TITLE=$OPTARG ;;
    t) TAB=$OPTARG ;;
    L) LOCAL=yes ;;
    K) KEEP=yes ;;
    f) IMAGE=$OPTARG ;;
    G) GALLERY=yes ;;
    *|h) usage ;;
  esac
done

DIR=$(realpath -m "$DIR")

case "$ACTION" in
  new)
    [ -n "$TITLE" ] || usage
    outline="$DIR/outline.org"
    [ -e "$outline" ] && { echo "$outline already exists" >&2; exit 1; }
    mkdir -p "$DIR"
    cat > "$outline" <<OUTLINE
#+TITLE: $TITLE
:PROPERTIES:
:LABELS:
:END:

* Outline

* Corrections

* Guardrails

* Images

* Gallery

* Resources

* Sources
OUTLINE
    echo "$outline"
    ;;
  generate)
    [ -f "$DIR/outline.org" ] || { echo "No outline.org in $DIR" >&2; exit 1; }
    JTF_S3_BUCKET=$JTF_S3_BUCKET JTF_FILES_BASE=$JTF_FILES_BASE JTF_AWS_PROFILE=$JTF_AWS_PROFILE \
      python3 "$LIBEXEC/generate.py" "$DIR" "$JTF_PROMPT" "$BLOG_ID" "$JTF_EXPLAINER_URL" ${KEEP:+keep}
    ;;
  revise)
    [ -f "$DIR/post.html" ] || { echo "No post.html in $DIR to revise" >&2; exit 1; }
    JTF_S3_BUCKET=$JTF_S3_BUCKET JTF_FILES_BASE=$JTF_FILES_BASE JTF_AWS_PROFILE=$JTF_AWS_PROFILE \
      python3 "$LIBEXEC/generate.py" "$DIR" "$JTF_PROMPT" "$BLOG_ID" "$JTF_EXPLAINER_URL" revise
    ;;
  add-image)
    [ -n "$IMAGE" ] || usage
    [ -f "$DIR/outline.org" ] || { echo "No outline.org in $DIR" >&2; exit 1; }
    section=Images
    [ -n "$GALLERY" ] && section=Gallery
    JTF_S3_BUCKET=$JTF_S3_BUCKET JTF_FILES_BASE=$JTF_FILES_BASE JTF_AWS_PROFILE=$JTF_AWS_PROFILE \
      python3 "$LIBEXEC/add_image.py" "$DIR" "$IMAGE" "$section"
    ;;
  preview)
    post="$DIR/post.html"
    [ -f "$post" ] || { echo "No post.html in $DIR" >&2; exit 1; }
    if [ -n "$LOCAL" ]; then
      url=$(file_url "$post")
    else
      bloggerassist -a push "$post" > /dev/null || exit 1
      id=$(grep -m1 '^<!-- BLOGGER-ID:' "$post" | sed 's/<!-- BLOGGER-ID: *//;s/ *-->.*//')
      [ -n "$id" ] || { echo "No BLOGGER-ID in $post after push" >&2; exit 1; }
      url="https://www.blogger.com/blog/post/edit/preview/$BLOG_ID/$id"
    fi
    TAB=${TAB:-$JTF_PREVIEW_TAB}
    anchor=$(chromeassist -a tabs | awk -F'|' -v t="$TAB" '$1 == t || index($2, t) || index($3, t) {print $1; exit}')
    [ -n "$anchor" ] || { echo "No Chrome tab matching '$TAB'" >&2; exit 1; }
    if [ -n "$LOCAL" ]; then
      before=$(chromeassist -a tabs | cut -d'|' -f1 | sort)
      chromeassist -a new-tab -t "$anchor" -u about:blank > /dev/null
      tab_id=$(comm -13 <(echo "$before") <(chromeassist -a tabs | cut -d'|' -f1 | sort) | head -1)
      [ -n "$tab_id" ] || { echo "Could not open a tab next to '$TAB'" >&2; exit 1; }
      chromeassist -a navigate -t "$tab_id" -u "$url" > /dev/null
    else
      chromeassist -a new-tab -t "$anchor" -u "$url" > /dev/null
    fi
    echo "$url"
    ;;
  *) usage ;;
esac