#!/usr/bin/env bash
set -eau -o pipefail

ARCEP_WWW="https://www.data.gouv.fr/fr/datasets/le-marche-du-haut-et-tres-haut-debit-fixe-deploiements/"

if [ "$#" -ne 2 ]; then
    echo "Usage: ingest path-to-arcep-ipe-csv-file path-to-generated-db"
    echo "ARCEP file can be downloaded here: ${ARCEP_WWW} or with script fetch_latest_arcep.sh"
    echo ""
    exit 1
fi
fullIpePath=$(realpath "${1}")
fullDbPath=$(realpath "${2}")

tmpSql=$(mktemp)
clean_tmp () {
    rm "${tmpSql}"
}
trap clean_tmp EXIT

echo "[+] Ingesting IPE data from ${fullIpePath}"
echo ""
cat > "${tmpSql}" <<EOF
.separator ","
.import ${fullIpePath} arcep
EOF

sqlite3 "${fullDbPath}" < "${tmpSql}"

echo "[+] Ingesting spatial data."

cat > "${tmpSql}" <<EOF
SELECT load_extension("mod_spatialite");
SELECT InitSpatialMetaData();

-- Despite the SELECT, we're actually creating a new ImmeubleGeoPoint
-- column here. The spatialite API is a bit weird...
SELECT AddGeometryColumn('arcep','ImmeubleGeoPoint',4326,'POINT');

-- The geodata is expressed in RGF93 (SRID 2154). We need to project
-- it to WSG84 to display it on a OSM map.
UPDATE arcep SET ImmeubleGeoPoint =
    MakePoint(
        CAST(x as DOUBLE),
        CAST(y as DOUBLE),
        4326);
EOF
sqlite3 "${fullDbPath}" < "${tmpSql}"

echo "[+] Creating Rtree index (spatial index). We're almost done."
cat > "${tmpSql}" <<EOF
SELECT load_extension("mod_spatialite");
SELECT CreateSpatialIndex('arcep','ImmeubleGeoPoint');
EOF
sqlite3 "${fullDbPath}" < "${tmpSql}"

echo "[+] SQLite database generated at ${fullDbPath}"