from typing import List, Optional, Literal
from pydantic import BaseModel, Field
from sanatan_assistant import allowedScriptureTitles


class Question(BaseModel):
    preferred_language: str = Field(
        description="User's preferred language. Respond in this language"
    )
    question: str = Field(description="The generated question to be asked to the user. Do not capture the expected answer here. Just the question only.")
    scripture: allowedScriptureTitles = Field(
        description="The scripture title this question is sourced from (e.g., Bhagavad Gita, Divya Prabandham)"
    )
    native_lyrics: str = Field(
        description="The lyrics in its native/original script (e.g., Sanskrit/Tamil). Sanitize this if there are garbled characters. This could be multi-line. capture entirely."
    )
    transliteration: str = Field(
        description="The transliterated text of the verse in English/the user's preferred language"
    )
    translation: str = Field(
        description="The translated meaning of the verse in English/the user's preferred language"
    )
    detailed_explanation: Optional[str] = Field(
        default=None,
        description="A detailed explanation of the verse or context, if available in the context",
    )
    word_by_word_meaning: Optional[str] = Field(
        default=None,
        description="Word-by-word meaning (in both native and english) or breakdown of the verse, if available in the context",
    )
    verse_number: Optional[int] = Field(
        default=None,
        description="The absolute verse number from the context if available.",
    )
    page_number: Optional[int] = Field(
        default=None, description="The page number from the context if available."
    )
    verse_reference: Optional[str] = Field(
        default=None,
        description="The reference identifier of the verse or the title (e.g., TVM 1.4.5). Include the prabandham_name as well if available. Do not capture the scripture name here.",
    )
    reference_link: Optional[str] = Field(
        default=None, description="The html_url if available"
    )
    complexity: Literal["beginner", "intermediate", "advanced"] = Field(
        description="Difficulty level of the question"
    )
    choices: List[str] = Field(
        description="List of multiple-choice options. Leave empty for open-text questions"
    )
    expected_answer: str = Field(
        description="The correct or expected answer to the question"
    )
    answer_explanation: str = Field(
        description="Explanation why the expected answer is correct"
    )
    expected_choice_index: Optional[int] = Field(
        default=None,
        description="Index of the correct choice in 'choices'. Null if open-text question",
    )

class AnswerValidation(BaseModel):
    is_correct: bool = Field(description="Whether the provided answer is correct")
    reasoning: str = Field(description="Explanation of why the answer is correct or not")
    correct_answer: str = Field(description="The correct/expected answer from the question object")