# -*- coding: utf-8 -*-
"""
Installations-Schritte pro Modus.

Definiert gewichtete Schritte fuer den InstallRunner.
"""

from __future__ import annotations

from dataclasses import dataclass


@dataclass
class InstallationStep:
    """Ein einzelner Installationsschritt."""
    id: str
    name: str
    description: str
    weight: int
    command_fn: str  # Name der Runner-Methode


def get_steps(mode: str) -> list[InstallationStep]:
    """Gibt die Schrittliste fuer den jeweiligen Modus zurueck."""

    stop_service_step = InstallationStep(
        id="stop_service",
        name="Laufenden Service stoppen",
        description="Stoppt einen bestehenden trixy-Service vor dem Update",
        weight=2,
        command_fn="step_stop_service",
    )

    start_service_step = InstallationStep(
        id="start_service",
        name="Service starten",
        description="Startet den trixy-Service nach der Installation",
        weight=2,
        command_fn="step_start_service",
    )

    common_steps = [
        InstallationStep(
            id="extract",
            name="Quellcode entpacken",
            description="Entpacke .tar.gz nach Installationspfad",
            weight=10,
            command_fn="step_extract",
        ),
        InstallationStep(
            id="apt_packages",
            name="System-Pakete",
            description="Installiere benoetigte apt-Pakete",
            weight=25,
            command_fn="step_apt_packages",
        ),
        InstallationStep(
            id="hostname",
            name="Hostname setzen",
            description="Setze System-Hostname",
            weight=2,
            command_fn="step_hostname",
        ),
    ]

    wifi_step = InstallationStep(
        id="wifi_ap",
        name="WiFi-Hotspot",
        description="Konfiguriere hostapd, dnsmasq, dhcpcd und NAT",
        weight=8,
        command_fn="step_wifi_ap",
    )

    venv_step = InstallationStep(
        id="venv",
        name="Python venv",
        description="Erstelle venv und installiere Kern-Requirements",
        weight=15,
        command_fn="step_venv",
    )

    plugin_step = InstallationStep(
        id="plugin_deps",
        name="Plugin-Abhaengigkeiten",
        description="Installiere Requirements der ausgewaehlten Plugins",
        weight=20,
        command_fn="step_plugin_deps",
    )

    dirs_step = InstallationStep(
        id="directories",
        name="Verzeichnisse",
        description="Erstelle Verzeichnisse und setze Berechtigungen",
        weight=5,
        command_fn="step_directories",
    )

    systemd_step = InstallationStep(
        id="systemd",
        name="systemd-Service",
        description="Erstelle und aktiviere systemd-Service",
        weight=5,
        command_fn="step_systemd",
    )

    models_step = InstallationStep(
        id="download_models",
        name="Modelle herunterladen",
        description="Lade ML-Modelle herunter (optional)",
        weight=15,
        command_fn="step_download_models",
    )

    wifi_connect_step = InstallationStep(
        id="wifi_connect",
        name="WLAN-Verbindung",
        description="Konfiguriere WLAN-Verbindung (wpa_supplicant)",
        weight=5,
        command_fn="step_wifi_connect",
    )

    swap_check_step = InstallationStep(
        id="check_swap",
        name="Speicher-Check",
        description="Pruefe RAM+Swap und lege bei Bedarf Swap-Datei an",
        weight=3,
        command_fn="step_check_swap",
    )

    swap_cleanup_step = InstallationStep(
        id="cleanup_swap",
        name="Swap abschliessen",
        description="Swap-Datei permanent behalten oder entfernen",
        weight=2,
        command_fn="step_cleanup_swap",
    )

    verify_step = InstallationStep(
        id="verify",
        name="Verifizierung",
        description="Pruefe installierte Abhaengigkeiten",
        weight=10,
        command_fn="step_verify",
    )

    if mode == "server":
        return [
            stop_service_step,
            swap_check_step,
            *common_steps,
            wifi_step,
            venv_step,
            plugin_step,
            dirs_step,
            models_step,
            systemd_step,
            start_service_step,
            verify_step,
            swap_cleanup_step,
        ]

    if mode == "client":
        return [
            stop_service_step,
            swap_check_step,
            common_steps[0],  # extract
            common_steps[1],  # apt
            common_steps[2],  # hostname
            wifi_connect_step,
            venv_step,
            dirs_step,
            systemd_step,
            start_service_step,
            verify_step,
            swap_cleanup_step,
        ]

    if mode == "standalone":
        return [
            stop_service_step,
            swap_check_step,
            *common_steps,
            wifi_connect_step,
            venv_step,
            plugin_step,
            dirs_step,
            models_step,
            systemd_step,
            start_service_step,
            verify_step,
            swap_cleanup_step,
        ]

    if mode == "config":
        return [
            common_steps[0],  # extract
            venv_step,
            verify_step,
        ]

    return common_steps