#!/usr/bin/env bash
# Instalador para Linux y macOS.
#
# Solo hace falta para RECONSTRUIR los datos. Para USAR el visor no se instala
# nada: se abre out/visor.html en cualquier navegador.
set -euo pipefail
cd "$(dirname "${BASH_SOURCE[0]}")"

echo "== RAVE SCOUT / EXPLORER =="

# --- python ---
PY=""
for c in python3.12 python3.11 python3.10 python3; do
  if command -v "$c" >/dev/null 2>&1; then
    v=$("$c" -c 'import sys;print(sys.version_info>=(3,9))' 2>/dev/null || echo False)
    [ "$v" = "True" ] && { PY="$c"; break; }
  fi
done
[ -n "$PY" ] || { echo "Falta Python 3.9 o superior."; echo \
  "  Debian/Ubuntu: sudo apt install python3 python3-venv"; \
  echo "  Fedora:        sudo dnf install python3"; \
  echo "  macOS:         brew install python"; exit 1; }
echo "Python: $($PY -V)"

if ! "$PY" -c "import venv" >/dev/null 2>&1; then
  echo "Falta el módulo venv. En Debian/Ubuntu: sudo apt install python3-venv"; exit 1
fi

# --- entorno ---
[ -d .venv ] || "$PY" -m venv .venv
./.venv/bin/pip -q install --upgrade pip
echo "Instalando dependencias…"
./.venv/bin/pip -q install -r requirements.txt

# --- comprobación ---
./.venv/bin/python - <<'EOF'
import importlib, sys
faltan = [m for m in ("numpy","scipy","rasterio","osmium","shapely","pyproj",
                      "requests","PIL") if not importlib.util.find_spec(m)]
if faltan:
    print("FALTAN:", ", ".join(faltan)); sys.exit(1)
print("Dependencias correctas.")
EOF

echo
echo "Listo."
echo "  Abrir el visor:      ./abrir.sh"
echo "  Ver países:          ./.venv/bin/python src/regions.py"
echo "  Reconstruir España:  make all"
echo "  Otro país:           REGION=pt make all"