from core.llm_generator.output_parser.errors import OutputParserError
from core.llm_generator.prompts import (
    RULE_CONFIG_PARAMETER_GENERATE_TEMPLATE,
    RULE_CONFIG_PROMPT_GENERATE_TEMPLATE,
    RULE_CONFIG_STATEMENT_GENERATE_TEMPLATE,
)
from libs.json_in_md_parser import parse_and_check_json_markdown


class RuleConfigGeneratorOutputParser:
    def get_format_instructions(self) -> tuple[str, str, str]:
        return (
            RULE_CONFIG_PROMPT_GENERATE_TEMPLATE,
            RULE_CONFIG_PARAMETER_GENERATE_TEMPLATE,
            RULE_CONFIG_STATEMENT_GENERATE_TEMPLATE,
        )

    def parse(self, text: str):
        try:
            expected_keys = ["prompt", "variables", "opening_statement"]
            parsed = parse_and_check_json_markdown(text, expected_keys)
            if not isinstance(parsed["prompt"], str):
                raise ValueError("Expected 'prompt' to be a string.")
            if not isinstance(parsed["variables"], list):
                raise ValueError("Expected 'variables' to be a list.")
            if not isinstance(parsed["opening_statement"], str):
                raise ValueError("Expected 'opening_statement' to be a str.")
            return parsed
        except Exception as e:
            raise OutputParserError(f"Parsing text\n{text}\n of rule config generator raised following error:\n{e}")
