from pydantic import BaseModel, EmailStr, Field
from typing import Optional, Literal, List
from datetime import datetime


class UserCreate(BaseModel):
    email: Optional[EmailStr] = None
    password: Optional[str] = None
    preferred_language: str = Field(default="fr")


class UserOut(BaseModel):
    id: str  # Supabase auth user UUID
    preferred_language: str
    email: Optional[EmailStr] = None
    created_at: datetime

    class Config:
        from_attributes = True


class Token(BaseModel):
    access_token: str
    token_type: str = "bearer"


class ConversationCreate(BaseModel):
    user_id: Optional[str] = None
    context: Optional[str] = ""


class ConversationOut(BaseModel):
    id: int
    user_id: Optional[str]
    started_at: datetime
    context: str

    class Config:
        from_attributes = True


class MessageCreate(BaseModel):
    conversation_id: int
    message_type: Literal["text", "audio", "image"] = "text"
    content: str
    role: Literal["user", "assistant"] = "user"


class MessageOut(BaseModel):
    id: int
    conversation_id: int
    message_type: str
    content: str
    role: str
    timestamp: datetime

    class Config:
        from_attributes = True


class ChatRequest(BaseModel):
    conversation_id: Optional[int] = None
    text: str
    language: str = "fr"


class ChatResponse(BaseModel):
    reply: str
    conversation_id: int


class TranscribeRequest(BaseModel):
    audio_url: Optional[str] = None
    language: Optional[str] = None


class TranscribeResponse(BaseModel):
    text: str


class AnalyzeImageRequest(BaseModel):
    image_url: str
    prompt: Optional[str] = None


class AnalyzeImageResponse(BaseModel):
    result: str


class TranslateRequest(BaseModel):
    text: str
    target_language: str


class TranslateResponse(BaseModel):
    text: str


# Unified chat endpoint models
class UnifiedChatRequest(BaseModel):
    message: str
    message_type: Literal["text", "audio", "image"] = "text"
    user_id: Optional[str] = None
    language: Optional[str] = None
    history: Optional[List[str]] = None


class UnifiedContext(BaseModel):
    similar_cases_found: int
    most_probable_diagnosis: Optional[str] = None
    confidence_level: Literal["high", "medium", "low"]
    advice: str


class UnifiedChatResponse(BaseModel):
    response: str
    context: UnifiedContext
    suggested_actions: List[str]
    language: Literal["fr", "en"]