#!/usr/bin/env bash
# Installs PMTiles tools and migrates from the old Leaflet/renderd/Apache2 map stack.
# This script is idempotent — safe to run multiple times.
# Called by upgrade.sh during the upgrade process.

set -e
set -x

# --- Install/upgrade the map toolchain (pmtiles CLI + tippecanoe) ---
# Shared with the pi-gen and Debian Live image builds so the versions and hash
# pins live in one place.  Version-guarded, so this is a no-op when the running
# image already baked in the current versions.
/opt/wrolpi/wrolpi/scripts/install_map_tools.sh || echo "Map tool installation failed, continuing..."

# --- Migrate from old map stack (runs once) ---

MARKER_FILE="/opt/wrolpi/.protomaps_installed"

if [ -f "${MARKER_FILE}" ]; then
  echo "Protomaps migration already completed."
  exit 0
fi

echo "Migrating map stack to Protomaps (MapLibre GL JS + PMTiles)..."

# --- Step 1: Stop and disable old map services ---

echo "Stopping old map services..."
systemctl stop renderd 2>/dev/null || :
systemctl stop apache2 2>/dev/null || :
systemctl stop postgresql@15-map.service 2>/dev/null || :

systemctl disable renderd 2>/dev/null || :
systemctl disable apache2 2>/dev/null || :
systemctl disable postgresql@15-map.service 2>/dev/null || :

# --- Step 2: Uninstall old map packages ---

echo "Removing old map packages..."
apt-get remove -y --purge apache2 apache2-dev apache2-doc libapache2-mod-tile renderd osm2pgsql 2>/dev/null || :
apt-get autoremove -y 2>/dev/null || :

# --- Step 3: Drop the map PostgreSQL cluster ---

echo "Removing map PostgreSQL cluster..."
if pg_lsclusters 2>/dev/null | grep -q "15.*map"; then
  pg_dropcluster --stop 15 map 2>/dev/null || :
fi

# Remove the map database blob (no longer needed, saves ~1.2 GB).
if [ -f /opt/wrolpi-blobs/map-db-gis.dump ]; then
  chattr -i /opt/wrolpi-blobs/map-db-gis.dump 2>/dev/null || :
  rm -f /opt/wrolpi-blobs/map-db-gis.dump
  echo "Removed map-db-gis.dump blob."
fi

# --- Step 4: Clean up old config files ---

rm -f /etc/renderd.conf
rm -f /etc/apache2/ports.conf
rm -f /etc/apache2/conf-available/mod_tile.conf
rm -f /etc/apache2/sites-available/000-default.conf
rm -rf /etc/systemd/system/postgresql@15-map.service.d
rm -f /var/www/html/leaflet.js /var/www/html/leaflet.css
# Remove legacy Postgres client credentials (no longer used).
rm -f /home/wrolpi/.pgpass

# --- Step 5: Update wrolpi.target to remove old services ---

# The target file is copied from the repo by repair.sh, but update the installed copy now.
if [ -f /etc/systemd/system/wrolpi.target ]; then
  sed -i 's/ renderd\.service//' /etc/systemd/system/wrolpi.target
  sed -i 's/ apache2\.service//' /etc/systemd/system/wrolpi.target
  sed -i 's/ postgresql@15-map\.service//' /etc/systemd/system/wrolpi.target
fi

systemctl daemon-reload

# --- Step 6: Mark migration as complete ---

touch "${MARKER_FILE}"
chown wrolpi:wrolpi "${MARKER_FILE}"

echo "Protomaps migration completed successfully."
echo "Map files (.pmtiles) should be placed in /media/wrolpi/map/"
echo "The map viewer is served by Caddy on port 8084."