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app/schemas/field.py

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+# app/schemas/field.py
+from datetime import datetime
+
+from pydantic import BaseModel, Field, validator
+from typing import Optional, List, Dict, Any
+from enum import Enum
+from app.schemas.common import BaseSchema
+
+
+class FieldType(str, Enum):
+    """Типы полей формы"""
+    TEXT = "text"
+    TEXTAREA = "textarea"
+    NUMBER = "number"
+    EMAIL = "email"
+    PHONE = "phone"
+    DATE = "date"
+    DATETIME = "datetime"
+    TIME = "time"
+    SELECT = "select"
+    MULTISELECT = "multiselect"
+    RADIO = "radio"
+    CHECKBOX = "checkbox"
+    FILE = "file"
+    IMAGE = "image"
+    URL = "url"
+    COLOR = "color"
+    RANGE = "range"
+    HIDDEN = "hidden"
+
+
+class FieldValidationRules(BaseModel):
+    """Правила валидации поля"""
+    min_length: Optional[int] = Field(None, ge=0)
+    max_length: Optional[int] = Field(None, ge=0)
+    min_value: Optional[float] = None
+    max_value: Optional[float] = None
+    pattern: Optional[str] = None  # regex pattern
+    required: bool = False
+    custom_error_message: Optional[str] = None
+
+
+class FieldOptions(BaseModel):
+    """Опции для полей типа select/radio/checkbox"""
+    options: List[Dict[str, Any]] = Field(default_factory=list)
+    multiple: bool = False
+    searchable: bool = False
+    placeholder: Optional[str] = None
+
+
+class FieldCreate(BaseSchema):
+    """Создание поля"""
+    name: str = Field(..., min_length=1, max_length=100,
+                      pattern=r'^[a-zA-Z_][a-zA-Z0-9_]*$')  # ✅ заменено regex на pattern
+    label: str = Field(..., min_length=1, max_length=200)
+    field_type: FieldType
+    placeholder: Optional[str] = Field(None, max_length=200)
+    help_text: Optional[str] = None
+    default_value: Optional[Any] = None
+    options: Optional[FieldOptions] = None
+    validation_rules: Optional[FieldValidationRules] = None
+    metadata: Dict[str, Any] = Field(default_factory=dict)
+    order: int = Field(0, ge=0)
+    is_required: bool = False
+
+    @validator('name')
+    def validate_name(cls, v):
+        if v in ['id', 'created_at', 'updated_at', 'form_id', 'submission_id']:
+            raise ValueError(f'Field name "{v}" is reserved')
+        return v
+
+
+class FieldUpdate(BaseSchema):
+    """Обновление поля"""
+    name: Optional[str] = Field(None, min_length=1, max_length=100,
+                                pattern=r'^[a-zA-Z_][a-zA-Z0-9_]*$')  # ✅ pattern вместо regex
+    label: Optional[str] = Field(None, min_length=1, max_length=200)
+    field_type: Optional[FieldType] = None
+    placeholder: Optional[str] = None
+    help_text: Optional[str] = None
+    default_value: Optional[Any] = None
+    options: Optional[FieldOptions] = None
+    validation_rules: Optional[FieldValidationRules] = None
+    metadata: Optional[Dict[str, Any]] = None
+    order: Optional[int] = Field(None, ge=0)
+    is_required: Optional[bool] = None
+
+
+class FieldResponse(BaseSchema):
+    id: int
+    name: str
+    label: str
+    field_type: FieldType
+    placeholder: Optional[str] = None
+    help_text: Optional[str] = None
+    options: Dict[str, Any] = Field(default_factory=dict)
+    validation_rules: Dict[str, Any] = Field(default_factory=dict)
+    metadata: Dict[str, Any] = Field(default_factory=dict)
+    created_at: datetime
+
+    class Config:
+        from_attributes = True