from __future__ import annotations
from textual.screen import Screen
from textual.widgets import Button, Static
from textual.containers import Vertical
from textual.app import ComposeResult
from ...services.deps_ext import check_dependencies_ext, install_dependencies_ext
from ...services.config import get_config, ensure_runtime_dirs
from .playbook_browser import PlaybookBrowserScreen


class StartupCheckScreen(Screen):
    def compose(self) -> ComposeResult:
        self.status = Static("", id="status")
        yield Vertical(
            Static("Autocheck der Abhängigkeiten", id="title"),
            self.status,
            Button("Installieren und fortfahren", id="install", variant="primary"),
            Button("Ohne Installation fortfahren", id="continue"),
        )

    def on_mount(self) -> None:
        ensure_runtime_dirs()
        _ = get_config()  # Konfig initialisieren
        info = check_dependencies_ext()
        lines = []
        if info["messages"]:
            lines.extend([f"- {m}" for m in info["messages"]])
        if info["missing_bins"]:
            lines.append("Fehlende Pakete: " + ", ".join(info["missing_bins"]))
        if info["missing_pip"]:
            lines.append("Fehlende Python-Module: " + ", ".join(info["missing_pip"]))
        if not lines:
            lines = ["Alle benötigten Komponenten scheinen vorhanden zu sein."]
        self.status.update("\\n".join(lines))

    def on_button_pressed(self, event: Button.Pressed) -> None:
        info = check_dependencies_ext()
        if event.button.id == "install":
            install_dependencies_ext(info["missing_bins"], info["missing_pip"])
        # Weiter zum Browser
        self.app.push_screen(PlaybookBrowserScreen())