#!/bin/bash
# ============================================================================
# convert_help_page.sh - Regenerates the in-app help page content
# ----------------------------------------------------------------------------
# Converts documentatie/Manual-Utilizare-DigiServer.md into the HTML fragment
# that the Flask app serves at /help, and refreshes the screenshot copies.
#
# Run this whenever the manual is edited, then rebuild the image:
#   ./documentatie/convert_help_page.sh
#   cd .. && docker compose up -d --build
# ============================================================================
set -euo pipefail

PROJECT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
SRC_MD="$PROJECT_DIR/documentatie/Manual-Utilizare-DigiServer.md"
SRC_IMG_DIR="$PROJECT_DIR/documentatie/screenshots"
DEST_DIR="$PROJECT_DIR/app/static/help"
DEST_IMG_DIR="$DEST_DIR/screenshots"
DEST_HTML="$DEST_DIR/_manual_body.html"

echo "============================================================"
echo " Regenerare pagina Ajutor (/help)"
echo "============================================================"
echo

# ---------------------------------------------------------------------------
# Checks
# ---------------------------------------------------------------------------
if ! command -v pandoc &> /dev/null; then
    echo "✗ Pandoc nu este instalat."
    echo "  Instalati cu: sudo apt-get install -y pandoc"
    exit 1
fi
if [ ! -f "$SRC_MD" ]; then
    echo "✗ Nu am gasit manualul: $SRC_MD"
    exit 1
fi

mkdir -p "$DEST_IMG_DIR"

# ---------------------------------------------------------------------------
# 1. Convert Markdown -> HTML fragment
# ---------------------------------------------------------------------------
echo "[1/3] Conversie Markdown -> HTML..."
pandoc "$SRC_MD" \
    -t html5 \
    --no-highlight \
    --wrap=none \
    -o "$DEST_HTML"
echo "  ✓ $(basename "$DEST_HTML")"

# ---------------------------------------------------------------------------
# 2. Copy screenshots and rewrite their paths for Flask's static route
# ---------------------------------------------------------------------------
echo
echo "[2/3] Copiere capturi de ecran si rescriere cai..."
cp "$SRC_IMG_DIR"/*.png "$DEST_IMG_DIR"/ 2>/dev/null || {
    echo "  ⚠ Nicio captura gasita in $SRC_IMG_DIR"
}
COUNT=$(ls -1 "$DEST_IMG_DIR"/*.png 2>/dev/null | wc -l)
echo "  ✓ $COUNT capturi copiate"

# Markdown references images as "screenshots/x.png"; the app serves them from
# /static/help/screenshots/, so the prefix has to be made explicit.
sed -i 's|src="screenshots/|src="/static/help/screenshots/|g' "$DEST_HTML"
REFS=$(grep -c '/static/help/screenshots/' "$DEST_HTML" || true)
echo "  ✓ $REFS referinte de imagini rescrise"

# ---------------------------------------------------------------------------
# 3. Sanity check: every referenced image must exist
# ---------------------------------------------------------------------------
echo
echo "[3/3] Verificare consistenta..."
MISSING=0
while IFS= read -r ref; do
    [ -z "$ref" ] && continue
    if [ ! -f "$DEST_IMG_DIR/$(basename "$ref")" ]; then
        echo "  ✗ lipsa: $ref"
        MISSING=$((MISSING + 1))
    fi
done < <(grep -oE '/static/help/screenshots/[^"]+' "$DEST_HTML" | sort -u || true)

if [ "$MISSING" -eq 0 ]; then
    echo "  ✓ toate imaginile referite exista"
else
    echo "  ⚠ $MISSING imagini lipsa"
fi

echo
echo "============================================================"
echo " Gata. Rebuild imaginea pentru a aplica modificarile:"
echo "   cd $PROJECT_DIR && docker compose up -d --build"
echo "============================================================"