from marshmallow import Schema, fields, validate, EXCLUDE, pre_load


class CreateCustomerSchema(Schema):
    """Validation schema for creating a new customer"""
    class Meta:
        unknown = EXCLUDE

    customer_last_name = fields.Str(
        required=True,
        validate=validate.Length(min=1, max=250),
        error_messages={"required": "Last name is required"}
    )
    customer_first_name = fields.Str(
        required=True,
        validate=validate.Length(min=1, max=250),
        error_messages={"required": "First name is required"}
    )
    customer_town = fields.Str(
        required=True,
        validate=validate.Length(min=1, max=140),
        error_messages={"required": "Town is required"}
    )
    customer_state = fields.Int(
        required=True,
        validate=validate.Range(min=0, max=50),
        error_messages={"required": "State is required"}
    )
    customer_zip = fields.Str(
        required=True,
        validate=validate.Length(min=5, max=10),
        error_messages={"required": "Zip code is required"}
    )
    customer_email = fields.Email(
        allow_none=True,
        load_default=None
    )
    customer_home_type = fields.Int(
        required=True,
        validate=validate.Range(min=0, max=10),
        error_messages={"required": "Home type is required"}
    )
    customer_phone_number = fields.Str(
        allow_none=True,
        validate=validate.Length(max=25),
        load_default=None
    )
    customer_address = fields.Str(
        required=True,
        validate=validate.Length(min=1, max=1000),
        error_messages={"required": "Address is required"}
    )
    customer_apt = fields.Str(
        allow_none=True,
        validate=validate.Length(max=140),
        load_default=None
    )
    customer_description = fields.Str(
        allow_none=True,
        validate=validate.Length(max=2000),
        load_default=None
    )


class UpdateCustomerSchema(Schema):
    """Validation schema for updating an existing customer"""
    class Meta:
        unknown = EXCLUDE

    @pre_load
    def normalize_data(self, data, **kwargs):
        # Convert empty strings to None for email
        if 'customer_email' in data and data['customer_email'] == "":
            data['customer_email'] = None
            
        # Convert boolean to int for customer_automatic
        if 'customer_automatic' in data:
            if isinstance(data['customer_automatic'], bool):
                data['customer_automatic'] = 1 if data['customer_automatic'] else 0
        return data

    customer_last_name = fields.Str(
        validate=validate.Length(min=1, max=250)
    )
    customer_first_name = fields.Str(
        validate=validate.Length(min=1, max=250)
    )
    customer_town = fields.Str(
        validate=validate.Length(min=1, max=140)
    )
    customer_state = fields.Int(
        validate=validate.Range(min=0, max=50)
    )
    customer_zip = fields.Str(
        validate=validate.Length(min=5, max=10)
    )
    customer_email = fields.Email(
        allow_none=True
    )
    customer_home_type = fields.Int(
        validate=validate.Range(min=0, max=10)
    )
    customer_phone_number = fields.Str(
        allow_none=True,
        validate=validate.Length(max=25)
    )
    customer_address = fields.Str(
        validate=validate.Length(min=1, max=1000)
    )
    customer_apt = fields.Str(
        allow_none=True,
        validate=validate.Length(max=140)
    )
    customer_automatic = fields.Int(
        validate=validate.Range(min=0, max=10)
    )
    customer_description = fields.Str(
        allow_none=True,
        validate=validate.Length(max=2000)
    )
    customer_fill_location = fields.Str(
        allow_none=True,
        validate=validate.Length(max=250)
    )


class UpdateDescriptionSchema(Schema):
    """Validation schema for updating customer description"""
    class Meta:
        unknown = EXCLUDE

    description = fields.Str(
        allow_none=True,
        validate=validate.Length(max=2000)
    )
    fill_location = fields.Int(
        allow_none=True
    )