#!/bin/bash
# scripts/05_import_routing_host.sh
# Run this directly on the Pi host (not inside the importer container).
# Builds a local ARM64 OSRM image if it doesn't exist, then preprocesses
# routing graphs for car, foot, and bicycle profiles.

set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
BACKEND_DIR="$(dirname "$SCRIPT_DIR")"
DATA_DIR="${1:-$HOME/dev/maps/data}"
OSRM_DIR="${DATA_DIR}/osrm"
PBF_FILE="${DATA_DIR}/osm/region.osm.pbf"
OSRM_IMAGE="maps-osrm-arm64:latest"

if [ ! -f "$PBF_FILE" ]; then
    echo "ERROR: PBF file not found at $PBF_FILE"
    echo "Run 01_download.sh first."
    exit 1
fi

# Build the ARM64 OSRM image if not already present
if ! podman image exists "$OSRM_IMAGE"; then
    echo "=== Building ARM64 OSRM image (one-time, ~30-60 min on Pi) ==="
    podman build \
        -f "${BACKEND_DIR}/osrm-arm64.Dockerfile" \
        -t "$OSRM_IMAGE" \
        "$BACKEND_DIR"
fi

for PROFILE in car foot bicycle; do
    PROFILE_DIR="${OSRM_DIR}/${PROFILE}"
    mkdir -p "$PROFILE_DIR"
    cp "$PBF_FILE" "${PROFILE_DIR}/region.osm.pbf"

    echo "=== Processing OSRM profile: $PROFILE ==="

    podman run --rm \
        -v "${PROFILE_DIR}:/data" \
        "$OSRM_IMAGE" \
        osrm-extract -p "/opt/${PROFILE}.lua" /data/region.osm.pbf

    podman run --rm \
        -v "${PROFILE_DIR}:/data" \
        "$OSRM_IMAGE" \
        osrm-partition /data/region.osrm

    podman run --rm \
        -v "${PROFILE_DIR}:/data" \
        "$OSRM_IMAGE" \
        osrm-customize /data/region.osrm

    echo "OSRM $PROFILE profile ready."
done

echo "All OSRM profiles processed."