installer.py

"""
Dependency installation helpers (pip install -r requirements.txt).
"""

from __future__ import annotations

import subprocess
import sys
from pathlib import Path

from ui import info, warn, error

BASE_DIR = Path(__file__).resolve().parent
REQUIREMENTS_FILE = BASE_DIR / "requirements.txt"


def install_dependencies() -> None:
    """Install dependencies from requirements.txt using the current Python interpreter."""
    if not REQUIREMENTS_FILE.exists():
        error(f"{REQUIREMENTS_FILE.name} not found. Nothing to install.")
        return

    warn(
        "Running pip install -r requirements.txt "
        "using the current Python interpreter."
    )
    cmd = [
        sys.executable,
        "-m",
        "pip",
        "install",
        "-r",
        str(REQUIREMENTS_FILE),
    ]

    info(f"Running: {' '.join(cmd)}")
    try:
        subprocess.check_call(cmd)
    except subprocess.CalledProcessError as exc:
        error(f"Dependency installation failed (exit code {exc.returncode}).")
        return

    info("Dependencies installed successfully.")