#!/usr/bin/env bash
set -euo pipefail

# Always run from this script's directory.
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
cd "$SCRIPT_DIR"

VENV_DIR=".venv"

if command -v python3 >/dev/null 2>&1; then
  PYTHON_BIN="python3"
elif command -v python >/dev/null 2>&1; then
  PYTHON_BIN="python"
else
  echo "Error: Python was not found on PATH."
  exit 1
fi

echo "Using Python: $PYTHON_BIN"

if [[ ! -x "$VENV_DIR/bin/python" ]]; then
  if [[ -d "$VENV_DIR" ]]; then
    echo "Existing virtual environment is not compatible with this OS. Recreating $VENV_DIR ..."
    rm -rf "$VENV_DIR"
  fi
  echo "Creating virtual environment in $VENV_DIR ..."
  "$PYTHON_BIN" -m venv "$VENV_DIR"
fi

VENV_PYTHON="$VENV_DIR/bin/python"

echo "Upgrading pip and packaging tools ..."
"$VENV_PYTHON" -m pip install --upgrade pip

echo "Installing requirements ..."
"$VENV_PYTHON" -m pip install -r requirements.txt

echo "Starting program ..."
"$VENV_PYTHON" -m src.taetigkeitsnachweis.cli