"""
Pydantic schemas for form-related operations
"""
from pydantic import BaseModel, Field, field_validator
from typing import Optional, List, Dict, Any, Union
from datetime import datetime
from ..models import QuestionType, ConditionType


# Question schemas
class QuestionSettings(BaseModel):
    """Settings for different question types"""
    choices: Optional[List[str]] = None  # For multiple choice, checkboxes, dropdown
    min_value: Optional[int] = None  # For number, linear scale
    max_value: Optional[int] = None
    min_length: Optional[int] = None  # For text inputs
    max_length: Optional[int] = None
    placeholder: Optional[str] = None
    scale_min_label: Optional[str] = None  # For linear scale
    scale_max_label: Optional[str] = None
    rows: Optional[Union[int, List[str]]] = None  # For matrix questions - accepts int or list
    columns: Optional[Union[int, List[str]]] = None  # For matrix questions - accepts int or list
    file_types: Optional[List[str]] = None  # For file upload
    max_file_size: Optional[int] = None
    payment_amount: Optional[float] = None  # For payment questions
    currency: Optional[str] = None
    ranking_items: Optional[Union[int, List[str]]] = None  # For ranking questions - accepts int or list
    
    class Config:
        extra = "allow"  # Allow additional fields


class QuestionBase(BaseModel):
    question_text: str
    question_type: QuestionType
    description: Optional[str] = None
    required: bool = False
    settings: Optional[QuestionSettings] = None


class QuestionCreate(QuestionBase):
    question_order: int
    form_id: int


class QuestionUpdate(BaseModel):
    question_text: Optional[str] = None
    question_type: Optional[QuestionType] = None
    description: Optional[str] = None
    required: Optional[bool] = None
    question_order: Optional[int] = None
    settings: Optional[QuestionSettings] = None


class QuestionResponse(QuestionBase):
    id: int
    form_id: int
    question_order: int
    created_at: datetime
    updated_at: datetime
    
    class Config:
        from_attributes = True


# Conditional logic schemas
class ConditionalRuleBase(BaseModel):
    trigger_question_id: int
    target_question_id: int
    condition_type: ConditionType
    condition_value: Optional[str] = None
    action: str = "show"  # "show" or "hide"
    
    @field_validator('action')
    @classmethod
    def validate_action(cls, v):
        if v not in ["show", "hide"]:
            raise ValueError('Action must be "show" or "hide"')
        return v


class ConditionalRuleCreate(ConditionalRuleBase):
    form_id: int


class ConditionalRuleResponse(ConditionalRuleBase):
    id: int
    form_id: int
    created_at: datetime
    
    class Config:
        from_attributes = True


# Form schemas
class FormSettings(BaseModel):
    """Form-level settings"""
    background_color: str = "#ffffff"
    text_color: str = "#000000"
    accent_color: str = "#9333ea"  # Purple
    bold_text_color: Optional[str] = "#9333ea"  # Bold text and buttons
    submit_button_text: str = "Submit"
    show_progress_bar: bool = True
    
    class Config:
        extra = "allow"


class FormBase(BaseModel):
    title: str
    description: Optional[str] = None
    settings: Optional[FormSettings] = None


class FormCreate(BaseModel):
    """Schema for creating a form from AI generation"""
    user_query: str  # The natural language description
    title: Optional[str] = None  # Optional - will be generated by AI if not provided
    description: Optional[str] = None  # Optional - will be generated by AI if not provided
    settings: Optional[FormSettings] = None  # Optional - defaults applied if not provided


class FormUpdate(BaseModel):
    title: Optional[str] = None
    description: Optional[str] = None
    settings: Optional[FormSettings] = None


class FormResponse(FormBase):
    id: int
    user_id: int
    created_at: datetime
    updated_at: datetime
    questions: List[QuestionResponse] = []
    conditional_rules: List[ConditionalRuleResponse] = []
    
    class Config:
        from_attributes = True


# Form generation response
class FormGenerationResponse(BaseModel):
    """Response from AI form generation"""
    form: FormResponse
    message: str = "Form generated successfully"


# Answer and submission schemas
class AnswerValue(BaseModel):
    """Answer value for different question types"""
    text: Optional[str] = None  # For text inputs
    number: Optional[float] = None  # For number inputs
    date: Optional[str] = None  # For date/time
    choices: Optional[List[str]] = None  # For multiple choice, checkboxes
    file_url: Optional[str] = None  # For file uploads
    files: Optional[List[Dict[str, Any]]] = None  # For file uploads
    rating: Optional[int] = None  # For ratings
    signature: Optional[str] = None  # Base64 signature image
    wallet_address: Optional[str] = None  # For wallet connect
    matrix_answers: Optional[Dict[str, str]] = None  # For matrix questions
    ranked_items: Optional[List[str]] = None  # For ranking questions
    
    class Config:
        extra = "allow"


class SubmitAnswer(BaseModel):
    question_id: int
    answer_value: AnswerValue


class SubmissionCreate(BaseModel):
    """Schema for submitting a form response"""
    answers: List[SubmitAnswer]
    metadata: Optional[Dict[str, Any]] = None
    session_id: Optional[str] = None
    form_version: Optional[int] = None
    utm_source: Optional[str] = None
    utm_medium: Optional[str] = None
    utm_campaign: Optional[str] = None


class SubmissionResponse(BaseModel):
    """Response after successful submission"""
    id: int
    form_id: int
    submitted_at: datetime
    message: str = "Form submitted successfully"
    
    class Config:
        from_attributes = True


class ResponseAnswerDetail(BaseModel):
    """Detailed answer in a response"""
    question_id: int
    question_text: str
    question_type: QuestionType
    answer_value: Dict[str, Any]
    
    class Config:
        from_attributes = True


class FormResponseDetail(BaseModel):
    """Detailed view of a single form response"""
    id: int
    form_id: int
    status: Optional[str] = None
    submitted_at: datetime
    ip_address: Optional[str]
    answers: List[ResponseAnswerDetail]
    
    class Config:
        from_attributes = True


class FormResponsesList(BaseModel):
    """List of form responses with summary"""
    total_count: int
    responses: List[FormResponseDetail]


# Public form schemas
class PublicFormCreate(BaseModel):
    form_id: int
    expires_at: Optional[datetime] = None
    allow_multiple_submissions: bool = True
    collect_email: bool = False
    custom_thank_you_message: Optional[str] = None


class PublicFormResponse(BaseModel):
    id: int
    form_id: int
    share_token: str
    is_public: bool
    expires_at: Optional[datetime]
    allow_multiple_submissions: bool
    collect_email: bool
    custom_thank_you_message: Optional[str]
    og_image_url: Optional[str] = None
    created_at: datetime
    
    class Config:
        from_attributes = True


class PublicFormDetail(BaseModel):
    """Public form structure for submissions"""
    form: FormResponse
    public_settings: PublicFormResponse
    
    class Config:
        from_attributes = True


# Export schemas
class ExportFormat(BaseModel):
    format: str = Field(..., pattern="^(csv|json)$")


class ExportResponse(BaseModel):
    download_url: str
    format: str
    total_responses: int


# Chat editing schemas
class ChatMessage(BaseModel):
    """Schema for chat-based form editing"""
    message: str = Field(..., min_length=1, max_length=1000)


class ChatResponse(BaseModel):
    """Response from chat-based form editing"""
    route: str  # add_component, edit_component, general_form_query, need_more_clarity
    response: Dict[str, Any]  # Updated component or form structure or answer text
    changes_made: Optional[str] = None  # Summary of changes if applicable
    
    class Config:
        from_attributes = True