"""Core data models for DreamLand."""

from dataclasses import dataclass, field
from datetime import datetime
from typing import Optional
import uuid


def _new_id() -> str:
    """Generate a short unique ID."""
    return uuid.uuid4().hex[:8]


@dataclass
class Entity:
    """A world entity extracted from or generated from a dream."""
    id: str = field(default_factory=_new_id)
    name: str = ""
    entity_type: str = ""  # "location" | "npc" | "item" | "quest"
    description: str = ""
    dream_id: str = ""
    created_at: str = field(default_factory=lambda: datetime.now().isoformat())
    metadata: dict = field(default_factory=dict)

    # NPC-specific fields
    dialog: str = ""
    location_id: str = ""

    # Quest-specific fields
    quest_status: str = ""  # "active" | "completed"
    giver_id: str = ""

    def to_dict(self) -> dict:
        """Serialize to dict for JSON storage."""
        return {
            "id": self.id,
            "name": self.name,
            "type": self.entity_type,
            "description": self.description,
            "dream_source": self.dream_id,
            "created_at": self.created_at,
            "metadata": self.metadata,
            "dialog": self.dialog,
            "location_id": self.location_id,
            "quest_status": self.quest_status,
            "giver_id": self.giver_id,
        }

    @classmethod
    def from_dict(cls, data: dict) -> "Entity":
        """Deserialize from dict."""
        return cls(
            id=data.get("id", ""),
            name=data.get("name", ""),
            entity_type=data.get("type", ""),
            description=data.get("description", ""),
            dream_id=data.get("dream_source", ""),
            created_at=data.get("created_at", ""),
            metadata=data.get("metadata", {}),
            dialog=data.get("dialog", ""),
            location_id=data.get("location_id", ""),
            quest_status=data.get("quest_status", ""),
            giver_id=data.get("giver_id", ""),
        )


@dataclass
class DreamEntry:
    """A single dream record."""
    id: str = field(default_factory=_new_id)
    raw_text: str = ""
    entities: list[Entity] = field(default_factory=list)
    emotions: list[str] = field(default_factory=list)
    summary: str = ""
    timestamp: str = field(default_factory=lambda: datetime.now().isoformat())
    has_image: bool = False

    def to_dict(self) -> dict:
        return {
            "id": self.id,
            "raw_text": self.raw_text,
            "entities_extracted": [e.id for e in self.entities],
            "emotions": self.emotions,
            "summary": self.summary,
            "timestamp": self.timestamp,
            "has_image": self.has_image,
        }


@dataclass
class DreamParseResult:
    """Structured output from the dream parser."""
    entities: list[Entity] = field(default_factory=list)
    emotions: list[str] = field(default_factory=list)
    summary: str = ""


@dataclass
class WorldContext:
    """Context passed to generators about the current world state."""
    nearby_locations: list[str] = field(default_factory=list)
    existing_npcs: list[str] = field(default_factory=list)
    emotions: list[str] = field(default_factory=list)
    total_entities: int = 0