# -*- coding: utf-8 -*-
"""
Datenklassen fuer das Trainer-Framework.
"""

from dataclasses import dataclass, field

from trixy_core.trainer.enums import TrainingState, TrainerType


@dataclass
class TrainerInfo:
    """Metadaten eines registrierten Trainers."""
    trainer_id: str = ""
    name: str = ""
    description: str = ""
    version: str = ""
    author: str = ""
    model_type: str = ""
    trainer_type: TrainerType = TrainerType.CORE


@dataclass
class TrainingProgress:
    """Fortschrittsdaten waehrend eines Trainings."""
    state: TrainingState = TrainingState.IDLE
    epoch: int = 0
    total_epochs: int = 0
    loss: float = 0.0
    val_loss: float = 0.0
    accuracy: float = 0.0
    learning_rate: float = 0.0
    eta_seconds: float = 0.0
    vram_used_mb: float = 0.0
    loss_history: list[float] = field(default_factory=list)
    val_loss_history: list[float] = field(default_factory=list)
    message: str = ""
    error: str = ""


@dataclass
class ValidationResult:
    """Ergebnis einer Trainings-Validierung."""
    valid: bool = False
    errors: list[str] = field(default_factory=list)
    warnings: list[str] = field(default_factory=list)
    gpu_available: bool = False
    gpu_name: str = ""
    gpu_memory_mb: float = 0.0


@dataclass
class FormSchema:
    """Schema fuer dynamische Formulare in der TUI."""
    fields: list[dict] = field(default_factory=list)