#!/usr/bin/env bash
# Build + serve the COLOMBIA walking router (Cartagena + Santa Marta boxes) on :5003.
#
# The full-country PBF (329 MB) is too big for `osmium extract -s complete_ways`
# on this box (~2 GB free RAM), so crop_pbf.py streams it in 3 passes and keeps
# only the two city boxes (~4.6 MB). The dataset is built with the official
# foot.lua profile (real walking speeds, ~5 km/h).
#
# Prereq: scripts/setup-osrm.sh has run once (OSRM binaries + osmium exist in
# $HOME/osm-build). The Colombia PBF is downloaded from geofabrik if missing.
#
# Usage:  scripts/setup-osrm-colombia.sh            # build + serve :5003
#         scripts/setup-osrm-colombia.sh --no-serve # build only
set -euo pipefail
cd "$(dirname "$0")"

W="${W:-$HOME/osm-build}"
OSM_DIR="$(cd ../.. && pwd)/osm"
DATA_DIR="$W/data/colombia"
OSRM_BIN="$W/build"
OSRM_SRC="$W/osrm-backend-26.4.1"
SERVE=1
[ "${1:-}" = "--no-serve" ] && SERVE=0
export LD_LIBRARY_PATH="$W/prefix/lib${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}"

mkdir -p "$DATA_DIR"
PBF="$OSM_DIR/colombia.osm.pbf"

echo "=== PBF"
if [ ! -s "$PBF" ]; then
  echo "downloading colombia-latest.osm.pbf from geofabrik (~330 MB)..."
  curl -sL -o "$PBF" https://download.geofabrik.de/south-america/colombia-latest.osm.pbf
fi
ls -la "$PBF"

echo "=== crop to Cartagena + Santa Marta boxes (3 streaming passes, ~3 min)"
# boxes: MINLON MINLAT MAXLON MAXLAT (Cartagena city+beaches, Santa Marta+Tayrona)
CARTAGENA="-75.66,10.26,-75.36,10.56"
SAMARTA="-74.36,10.84,-74.02,11.22"
python3 crop_pbf.py "$PBF" /tmp/colombia-trip.pbf "$CARTAGENA" "$SAMARTA"

echo "=== extract (foot.lua) + partition + customize"
rm -f "$DATA_DIR"/colombia-trip.osrm.*
"$OSRM_BIN/osrm-extract" /tmp/colombia-trip.pbf \
  -p "$OSRM_SRC/profiles/foot.lua" -o "$DATA_DIR/colombia-trip"
"$OSRM_BIN/osrm-partition" "$DATA_DIR/colombia-trip"
"$OSRM_BIN/osrm-customize" "$DATA_DIR/colombia-trip"

if [ "$SERVE" = 0 ]; then
  echo "done (not serving; start with: $OSRM_BIN/osrm-routed --algorithm mld --port 5003 $DATA_DIR/colombia-trip.osrm)"
  exit 0
fi

echo "=== serve on :5003 (Ctrl-C to stop)"
exec "$OSRM_BIN/osrm-routed" --algorithm mld --port 5003 "$DATA_DIR/colombia-trip.osrm"