entrypoint.sh

#!/bin/bash
set -euo pipefail

echo "=== Container Startup Script ==="

# Update SNAP
echo "Updating SNAP..."
if [ -d "${SNAP_HOME}/bin" ]; then
    if [ "${SNAP_SKIP_UPDATES:-1}" = "1" ]; then
        echo "SNAP updates skipped (SNAP_SKIP_UPDATES=1)."
    else
        ${SNAP_HOME}/bin/snap --nosplash --nogui --modules --update-all || echo "Warning: SNAP update failed"
        echo "SNAP update completed."
    fi
else
    echo "Warning: SNAP_HOME not found at ${SNAP_HOME}"
fi

GRID_PATH_CANDIDATE="${GRID_PATH:-${grid_path:-}}"

echo "Preparing grid assets..."

if [ -n "${GRID_PATH_CANDIDATE}" ]; then
    if [ -f "${GRID_PATH_CANDIDATE}" ] && [[ "${GRID_PATH_CANDIDATE}" == *.geojson ]]; then
        export GRID_PATH="${GRID_PATH_CANDIDATE}"
        echo "Using mounted/configured grid file: ${GRID_PATH}"
    else
        echo "ERROR: GRID_PATH must point to an existing .geojson file inside the container. Received: ${GRID_PATH_CANDIDATE}" >&2
        exit 1
    fi
else
    GRID_DIR="${GRID_DIR:-/workspace/grid}"
    mkdir -p "${GRID_DIR}"
    shopt -s nullglob
    GRID_GEOJSON_FILES=("${GRID_DIR}"/*.geojson)
    shopt -u nullglob
    if [ ${#GRID_GEOJSON_FILES[@]} -gt 0 ]; then
        export GRID_PATH="${GRID_GEOJSON_FILES[0]}"
        echo "Using existing grid file: ${GRID_PATH}"
    else
    echo "ERROR: No .geojson grid found in ${GRID_DIR}. Mount a grid file or set GRID_PATH to an existing in-container .geojson file." >&2
    exit 1
    fi
fi

# Execute the CMD passed to the container
echo "Starting main process..."
exec "$@"