import-diff

#!/usr/bin/env bash
set -o errexit
set -o pipefail
set -o nounset

# For backward compatibility, allow both PG* and POSTGRES_* forms,
# with the non-standard POSTGRES_* form taking precedence.
# An error will be raised if neither form is given, except for the PGPORT
export PGHOST="${POSTGRES_HOST:-${PGHOST?}}"
export PGDATABASE="${POSTGRES_DB:-${PGDATABASE?}}"
export PGUSER="${POSTGRES_USER:-${PGUSER?}}"
export PGPASSWORD="${POSTGRES_PASSWORD:-${PGPASSWORD?}}"
export PGPORT="${POSTGRES_PORT:-${PGPORT:-5432}}"

imposm diff \
    -connection "postgis://$PGUSER:$PGPASSWORD@$PGHOST:$PGPORT/$PGDATABASE" \
    -mapping "${IMPOSM_MAPPING_FILE:?}" \
    -cachedir "${IMPOSM_CACHE_DIR:?}" \
    -diffdir "${IMPOSM_DIFF_DIR:?}" \
    -expiretiles-dir "${EXPIRETILES_DIR:?}" \
    -expiretiles-zoom "${EXPIRETILES_ZOOM:-14}" \
    -config "${IMPOSM_CONFIG_FILE:?}" \
    "${PBF_DATA_DIR:?}/changes.osc.gz"