#!/bin/bash
# scripts/06_build_offline_packages.sh

PG_CONN="postgresql://maps:maps@postgres:5432/maps"
PACKAGES_DIR="/data/offline_packages"
REGION_ID="amsterdam"
BBOX="4.7288,52.2783,5.0796,52.4311"  # minLon,minLat,maxLon,maxLat

mkdir -p "${PACKAGES_DIR}/${REGION_ID}"

# --- Tiles: extract MBTiles for the bounding box ---
# Use martin-cp (Martin's CLI tool) to export tiles from PostGIS to MBTiles
martin-cp \
    --output-file "${PACKAGES_DIR}/${REGION_ID}/tiles.mbtiles" \
    --mbtiles-type flat \
    --bbox "$BBOX" \
    --min-zoom 0 \
    --max-zoom 16 \
    --source openmaptiles \
    --connect "$PG_CONN"

# --- POIs: export to SQLite with FTS5 index ---
# Custom Rust tool or Python script that queries PostGIS and writes SQLite
/app/tools/export_pois_sqlite \
    --bbox "$BBOX" \
    --pg-conn "$PG_CONN" \
    --output "${PACKAGES_DIR}/${REGION_ID}/pois.db"

# --- Routing: tar the OSRM files per profile ---
for PROFILE in car foot bicycle; do
    tar -cf "${PACKAGES_DIR}/${REGION_ID}/routing-${PROFILE}.tar" \
        -C "/data/osrm/${PROFILE}" \
        region.osrm region.osrm.cell_metrics region.osrm.cells \
        region.osrm.datasource_names region.osrm.ebg region.osrm.ebg_nodes \
        region.osrm.edges region.osrm.fileIndex region.osrm.geometry \
        region.osrm.icd region.osrm.maneuver_overrides \
        region.osrm.mldgr region.osrm.names region.osrm.nbg_nodes \
        region.osrm.partition region.osrm.properties \
        region.osrm.ramIndex region.osrm.timestamp \
        region.osrm.tld region.osrm.tls region.osrm.turn_duration_penalties \
        region.osrm.turn_penalties_index region.osrm.turn_weight_penalties
done

# --- Update offline_regions table with file sizes ---
TILES_SIZE=$(stat -f%z "${PACKAGES_DIR}/${REGION_ID}/tiles.mbtiles" 2>/dev/null || stat -c%s "${PACKAGES_DIR}/${REGION_ID}/tiles.mbtiles")
ROUTING_SIZE=0
for PROFILE in car foot bicycle; do
    SIZE=$(stat -f%z "${PACKAGES_DIR}/${REGION_ID}/routing-${PROFILE}.tar" 2>/dev/null || stat -c%s "${PACKAGES_DIR}/${REGION_ID}/routing-${PROFILE}.tar")
    ROUTING_SIZE=$((ROUTING_SIZE + SIZE))
done
POIS_SIZE=$(stat -f%z "${PACKAGES_DIR}/${REGION_ID}/pois.db" 2>/dev/null || stat -c%s "${PACKAGES_DIR}/${REGION_ID}/pois.db")

psql "$PG_CONN" <<SQL
INSERT INTO offline_regions (id, name, description, bbox, tiles_size_bytes, routing_size_bytes, pois_size_bytes, last_updated)
VALUES (
    '${REGION_ID}',
    'Amsterdam',
    'Amsterdam metropolitan area',
    ST_MakeEnvelope(4.7288, 52.2783, 5.0796, 52.4311, 4326),
    ${TILES_SIZE},
    ${ROUTING_SIZE},
    ${POIS_SIZE},
    NOW()
)
ON CONFLICT (id) DO UPDATE SET
    tiles_size_bytes   = EXCLUDED.tiles_size_bytes,
    routing_size_bytes = EXCLUDED.routing_size_bytes,
    pois_size_bytes    = EXCLUDED.pois_size_bytes,
    last_updated       = EXCLUDED.last_updated;
SQL

echo "Offline package for ${REGION_ID} built."