from modaic import PrecompiledAgent, PrecompiledConfig
from .modules import TweetGeneratorModule, TweetEvaluatorModule
from .models import EvaluationResult
from .hill_climbing import HillClimbingOptimizer
from typing import Optional, List
from .utils import get_dspy_lm
from .constants import DEFAULT_CATEGORIES, DEFAULT_ITERATIONS, DEFAULT_PATIENCE


class TweetOptimizerConfig(PrecompiledConfig):
    lm: str = "openrouter/google/gemini-2.5-flash"
    eval_lm: str = "openrouter/openai/gpt-5"
    categories: List[str] = DEFAULT_CATEGORIES
    max_iterations: int = DEFAULT_ITERATIONS
    patience: int = DEFAULT_PATIENCE


class TweetOptimizerAgent(PrecompiledAgent):
    config: TweetOptimizerConfig

    current_tweet: str = ""
    previous_evaluation: Optional[EvaluationResult] = None
    
    def __init__(self, config: TweetOptimizerConfig, **kwargs):
        super().__init__(config, **kwargs)
        self.tweet_generator = TweetGeneratorModule()
        self.tweet_evaluator = TweetEvaluatorModule()

        # set up optimizer
        self.optimizer = HillClimbingOptimizer(
            generator=self.tweet_generator,
            evaluator=self.tweet_evaluator,
            categories=config.categories,
            max_iterations=config.max_iterations,
            patience=config.patience
        )

        self.lm = config.lm
        self.eval_lm = config.eval_lm
        self.categories = config.categories
        self.max_iterations = config.max_iterations
        self.patience = config.patience

        # initialize DSPy with the specified model
        self.tweet_generator.set_lm(get_dspy_lm(config.lm))
        self.tweet_evaluator.set_lm(get_dspy_lm(config.eval_lm))

    def forward(
        self,
        input_text: str,
        iterations: Optional[int] = None,
        patience: Optional[int] = None
    ) -> str:
        """Run full optimization process."""
        max_iterations = iterations or self.max_iterations
        patience_limit = patience or self.patience

        results = {
            'initial_text': input_text,
            'final_tweet': '',
            'best_score': 0.0,
            'iterations_run': 0,
            'early_stopped': False,
            'scores_history': [],
            'improvement_count': 0
        }

        best_tweet = ""
        best_score = 0.0

        for iteration, (current_tweet, scores, is_improvement, patience_counter, _, _) in enumerate(
            self.optimizer.optimize(input_text)
        ):
            iteration_num = iteration + 1
            results['iterations_run'] = iteration_num
            results['scores_history'].append(scores)

            if is_improvement:
                best_tweet = current_tweet
                best_score = sum(scores.category_scores) / len(scores.category_scores)
                results['improvement_count'] += 1

            # check for early stopping
            if patience_counter >= patience_limit:
                results['early_stopped'] = True
                break

            # stop at max iterations
            if iteration_num >= max_iterations:
                break

        results.update({
            'final_tweet': best_tweet,
            'best_score': best_score
        })

        self.reset()

        return results
    
    def reset(self):
        self.current_tweet = ""
        self.previous_evaluation = None