# -*- coding: utf-8 -*-
"""
Event-Datenklassen fuer Downloads.

Definiert typisierte Events fuer den Download-Lifecycle:
- BeforeDownload: Vor dem Download (cancellable, URL/Pfad aenderbar)
- DownloadProgress: Fortschritts-Update (informativ)
- DownloadCompleted: Download erfolgreich
- DownloadFailed: Download fehlgeschlagen
- BeforeExtract: Vor dem Entpacken (cancellable, Ziel aenderbar)
- ExtractCompleted: Entpacken abgeschlossen
"""

from dataclasses import dataclass

from trixy_core.events.event_data.base import EventData


@dataclass
class BeforeDownload(EventData):
    """Cancellable — vor dem Download. Plugins koennen URL/Pfad aendern oder cancel()."""
    download_id: str = ""
    url: str = ""
    filename: str = ""
    dest_path: str = ""
    total_size: int = 0


@dataclass
class DownloadProgress(EventData):
    """Fortschritts-Update waehrend des Downloads (informativ, alle 5%)."""
    download_id: str = ""
    filename: str = ""
    downloaded: int = 0
    total: int = 0
    percent: float = 0.0
    speed: int = 0
    eta_seconds: int = 0


@dataclass
class DownloadCompleted(EventData):
    """Download erfolgreich abgeschlossen."""
    download_id: str = ""
    url: str = ""
    filename: str = ""
    dest_path: str = ""
    size: int = 0
    duration_seconds: float = 0.0
    speed_avg: int = 0


@dataclass
class DownloadFailed(EventData):
    """Download fehlgeschlagen."""
    download_id: str = ""
    url: str = ""
    filename: str = ""
    error: str = ""


@dataclass
class BeforeExtract(EventData):
    """Cancellable — vor dem Entpacken. Plugins koennen cancel() oder dest_dir aendern."""
    download_id: str = ""
    filename: str = ""
    archive_path: str = ""
    dest_dir: str = ""


@dataclass
class ExtractCompleted(EventData):
    """Entpacken abgeschlossen."""
    download_id: str = ""
    filename: str = ""
    dest_dir: str = ""
    file_count: int = 0