from typer import Typer
from rich.console import Console
from rich.table import Table
from pathlib import Path
from datetime import datetime
from repocat.config import load_config
from repocat.models.config import RepoCategory

app = Typer()
console = Console()


def get_dir_size(path: Path) -> int:
    """Returns size in bytes."""
    return sum(f.stat().st_size for f in path.rglob("*") if f.is_file())


def summarize_category(category: RepoCategory, base_path: Path):
    cat_path = base_path / category.subdir
    if not cat_path.exists():
        return 0, 0.0, None, None

    now = datetime.now()
    repo_infos = []

    for repo in cat_path.iterdir():
        if not repo.is_dir():
            continue

        size_bytes = get_dir_size(repo)
        mtime = datetime.fromtimestamp(repo.stat().st_mtime)
        age_days = (now - mtime).days

        repo_infos.append((repo.name, size_bytes, age_days, mtime))

    if not repo_infos:
        return 0, 0.0, None, None

    total_size = sum(info[1] for info in repo_infos) / 1024 / 1024
    avg_age = sum(info[2] for info in repo_infos) // len(repo_infos)

    oldest = max(repo_infos, key=lambda x: x[2])  # größtes Alter

    return len(repo_infos), total_size, avg_age, (oldest[0], oldest[2])


@app.command("status")
def status():
    """
    Zeigt eine Übersicht über alle Repository-Kategorien.
    """
    config = load_config()
    base = config.base_dir

    table = Table(title="Repository-Status")
    table.add_column("Kategorie")
    table.add_column("Repos", justify="right")
    table.add_column("Gesamtgröße", justify="right")
    table.add_column("Ø Alter", justify="right")
    table.add_column("Ältestes Repo", justify="left")

    for cat in config.categories:
        if cat.is_archive:
            continue
        count, total_size, avg_age, oldest = summarize_category(cat, base)

        table.add_row(
            cat.name,
            str(count),
            f"{total_size:.1f} MB",
            f"{avg_age or '–'} d",
            f"{oldest[0]} ({oldest[1]} d)" if oldest else "–"
        )

    console.print(table)