from pydantic import BaseModel, Field, field_validator
from typing import List, Optional, Dict, Any
from llama_index.core.llms import MessageRole
from datetime import datetime
import re
import pytz

jakarta_tz = pytz.timezone("Asia/Jakarta")


class PasswordValidator:
    @staticmethod
    def validate(password: str) -> str:
        if len(password) < 8 or len(password) > 32:
            raise ValueError("Password must be between 8 and 32 characters long")
        if not re.search(r"[A-Z]", password):
            raise ValueError("Password must contain at least one uppercase letter")
        if not re.search(r"[a-z]", password):
            raise ValueError("Password must contain at least one lowercase letter")
        if not re.search(r"\d", password):
            raise ValueError("Password must contain at least one digit")
        if not re.search(r'[!@#$%^&*(),.?":{}|<>]', password):
            raise ValueError("Password must contain at least one special character")
        return password


class CreateUserRequest(BaseModel):
    name: str
    username: str
    email: str
    password: str
    role_id: int = 2

    @field_validator("password")
    def validate_password(cls, password):
        return PasswordValidator.validate(password)


class RoleCreate(BaseModel):
    name: str


class RoleUpdate(BaseModel):
    name: str


class LoginRequest(BaseModel):
    email: str
    password: str


class UserVerification(BaseModel):
    password: str
    new_password: str = Field(min_length=6)

    @field_validator("new_password")
    def validate_new_password(cls, new_password):
        return PasswordValidator.validate(new_password)


class Token(BaseModel):
    access_token: str
    token_type: str


class MetadataRequest(BaseModel):
    title: str
    category_id: int
    author: str
    year: int
    publisher: str


class MetadataResponse(BaseModel):
    id : int
    title: str
    author: str
    category: str  # Changed to reflect the actual category name
    category_id : int
    year: int
    publisher: str
    thumbnail: Optional[Any]  # Make thumbnail optional

    class Config:
        from_attributes = True


class DeleteById(BaseModel):
    id: str


class UserPromptRequest(BaseModel):
    prompt: str
    streaming: bool


class BotMetaCreate(BaseModel):
    metadata_id: List[int]  # List of integers for metadata_id


class BotCreateRequest(BaseModel):
    name: str


class BotResponse(BaseModel):
    role: str = "assistant"
    content: str
    metadata: List
    scores: List


class BotResponseStreaming(BaseModel):
    role: str = "assistant"
    content: Optional[str] = None
    completed_content: Optional[str] = None
    reference: Optional[str] = None
    metadata: Optional[Dict] = None
    score: Optional[float] = None

class TestStreaming(BaseModel):
    role: str = "assistant"
    content: str


class ChatMessage(BaseModel):
    """Chat message."""

    role: MessageRole = MessageRole.ASSISTANT
    content: Optional[Any] = ""
    metadata: Optional[List[Any]] = None
    timestamp : Optional[datetime] = datetime.now(jakarta_tz)
    payment: Optional[str] = Field(default=None)
    
class ChatHistory(BaseModel):
    messages: List[ChatMessage]
    

class CategoryCreate(BaseModel):
    category_name: str