from pydantic import BaseModel, EmailStr, Field, ConfigDict
from datetime import datetime
from typing import Optional

class UserBase(BaseModel):
    username: str = Field(..., min_length=3, max_length=50, description="Username untuk login")
    nama: Optional[str] = Field(None, max_length=150, description="Nama lengkap pemilik akun")
    email: EmailStr = Field(..., description="Alamat email valid")
    role: Optional[str] = Field("admin", description="Role akun: admin atau kaprodi")
    kode_prodi: Optional[str] = Field(None, description="Kode prodi jika role kaprodi")

class UserCreate(UserBase):
    password: str = Field(..., min_length=6, description="Password minimal 6 karakter")

class UserUpdate(BaseModel):
    nama: Optional[str] = None
    email: Optional[EmailStr] = None
    role: Optional[str] = None
    kode_prodi: Optional[str] = None
    password: Optional[str] = None
    is_active: Optional[bool] = None

class UserLogin(BaseModel):
    username: str = Field(..., description="Username untuk login")
    password: str = Field(..., description="Password user")

class UserResponse(UserBase):
    id: int
    is_active: bool
    created_at: Optional[datetime] = None
    updated_at: Optional[datetime] = None

    model_config = ConfigDict(from_attributes=True)

class Token(BaseModel):
    access_token: str
    token_type: str
    username: Optional[str] = None
    nama: Optional[str] = None
    role: Optional[str] = None
    kode_prodi: Optional[str] = None

class TokenData(BaseModel):
    username: Optional[str] = None