"""
RawSession - Couche 0 : Capture Brute

Enregistre fidèlement toutes les interactions utilisateur avec horodatage précis
et contexte complet. C'est la fondation du système RPA Vision V3.
"""

from dataclasses import dataclass, field
from datetime import datetime
from typing import Dict, List, Optional, Any
from pathlib import Path
import json


@dataclass
class RawWindowContext:
    """
    Contexte de fenêtre pour un événement (RawSession)
    
    Renommé de WindowContext pour éviter collision avec ScreenState.WindowContext
    Auteur: Dom, Alice Kiro - 15 décembre 2024
    """
    title: str
    app_name: str
    
    def to_dict(self) -> Dict[str, str]:
        return {
            "title": self.title,
            "app_name": self.app_name
        }
    
    @classmethod
    def from_dict(cls, data: Dict[str, str]) -> 'RawWindowContext':
        return cls(
            title=data["title"],
            app_name=data["app_name"]
        )


# Alias de compatibilité pour migration douce
WindowContext = RawWindowContext


@dataclass
class Event:
    """
    Événement utilisateur capturé
    
    Types supportés:
    - mouse_click, mouse_move, mouse_scroll
    - key_press, key_release, text_input
    - window_change, screen_change
    """
    t: float  # Timestamp relatif en secondes depuis début session
    type: str  # Type d'événement
    window: RawWindowContext
    screenshot_id: Optional[str] = None
    data: Dict[str, Any] = field(default_factory=dict)  # Données spécifiques au type
    
    def to_dict(self) -> Dict[str, Any]:
        result = {
            "t": self.t,
            "type": self.type,
            "window": self.window.to_dict(),
        }
        if self.screenshot_id:
            result["screenshot_id"] = self.screenshot_id
        # Ajouter les données spécifiques
        result.update(self.data)
        return result
    
    @classmethod
    def from_dict(cls, data: Dict[str, Any]) -> 'Event':
        # Extraire les champs de base
        t = data["t"]
        event_type = data["type"]
        window = RawWindowContext.from_dict(data["window"])
        screenshot_id = data.get("screenshot_id")
        
        # Le reste va dans data
        event_data = {k: v for k, v in data.items() 
                     if k not in ["t", "type", "window", "screenshot_id"]}
        
        return cls(
            t=t,
            type=event_type,
            window=window,
            screenshot_id=screenshot_id,
            data=event_data
        )


@dataclass
class Screenshot:
    """Référence à un screenshot capturé"""
    screenshot_id: str
    relative_path: str
    captured_at: str  # ISO format timestamp
    
    def to_dict(self) -> Dict[str, str]:
        return {
            "screenshot_id": self.screenshot_id,
            "relative_path": self.relative_path,
            "captured_at": self.captured_at
        }
    
    @classmethod
    def from_dict(cls, data: Dict[str, str]) -> 'Screenshot':
        return cls(
            screenshot_id=data["screenshot_id"],
            relative_path=data["relative_path"],
            captured_at=data["captured_at"]
        )


@dataclass
class RawSession:
    """
    Session brute capturant tous les événements utilisateur
    
    Format: rawsession_v1
    """
    session_id: str
    agent_version: str
    environment: Dict[str, Any]
    user: Dict[str, str]
    context: Dict[str, str]
    started_at: datetime
    ended_at: Optional[datetime] = None
    events: List[Event] = field(default_factory=list)
    screenshots: List[Screenshot] = field(default_factory=list)
    schema_version: str = "rawsession_v1"
    
    def add_event(self, event: Event) -> None:
        """Ajouter un événement à la session"""
        self.events.append(event)
    
    def add_screenshot(self, screenshot: Screenshot) -> None:
        """Ajouter un screenshot à la session"""
        self.screenshots.append(screenshot)
    
    def to_json(self) -> Dict[str, Any]:
        """Sérialiser en JSON"""
        return {
            "schema_version": self.schema_version,
            "session_id": self.session_id,
            "agent_version": self.agent_version,
            "environment": self.environment,
            "user": self.user,
            "context": self.context,
            "started_at": self.started_at.isoformat(),
            "ended_at": self.ended_at.isoformat() if self.ended_at else None,
            "events": [event.to_dict() for event in self.events],
            "screenshots": [screenshot.to_dict() for screenshot in self.screenshots]
        }
    
    @classmethod
    def from_json(cls, data: Dict[str, Any]) -> 'RawSession':
        """Désérialiser depuis JSON"""
        # Valider schéma
        schema_version = data.get("schema_version")
        if schema_version != "rawsession_v1":
            raise ValueError(
                f"Unsupported schema version: {schema_version}. "
                f"Expected: rawsession_v1"
            )
        
        # Parser dates
        started_at = datetime.fromisoformat(data["started_at"])
        ended_at = datetime.fromisoformat(data["ended_at"]) if data.get("ended_at") else None
        
        # Parser events et screenshots
        events = [Event.from_dict(e) for e in data.get("events", [])]
        screenshots = [Screenshot.from_dict(s) for s in data.get("screenshots", [])]
        
        return cls(
            schema_version=schema_version,
            session_id=data["session_id"],
            agent_version=data["agent_version"],
            environment=data["environment"],
            user=data["user"],
            context=data["context"],
            started_at=started_at,
            ended_at=ended_at,
            events=events,
            screenshots=screenshots
        )
    
    def save_to_file(self, filepath: Path) -> None:
        """Sauvegarder dans un fichier JSON"""
        filepath.parent.mkdir(parents=True, exist_ok=True)
        with open(filepath, 'w', encoding='utf-8') as f:
            json.dump(self.to_json(), f, indent=2, ensure_ascii=False)
    
    @classmethod
    def load_from_file(cls, filepath: Path) -> 'RawSession':
        """Charger depuis un fichier JSON"""
        with open(filepath, 'r', encoding='utf-8') as f:
            data = json.load(f)
        return cls.from_json(data)