from pydantic import BaseModel, Field, field_validator


# ----------------------------------------------------------------------
# Token
# ----------------------------------------------------------------------
class TokenRequest(BaseModel):
    username: str = Field(..., min_length=3, max_length=30)
    password: str

    @field_validator("username")
    def all_allowed_chars(cls, v):
        for v_char in v:
            if not v_char in "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_":
                raise ValueError("username can only contain a-z, A-Z, 0-9 and _")
        return v


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