import json
from pathlib import Path

# Model display names (short for figures)
# Follows ArtificialAnalysis.ai naming conventions
MODEL_DISPLAY_NAMES = {
    # OpenAI / Azure
    "Azure_gpt-5.1-2025-11-13": "GPT-5.1",
    "Azure_gpt-5.1-chat-2025-11-13": "GPT-5.1",
    "Azure_o4-mini": "o4-mini",
    "Azure_gpt-4o": "GPT-4o",
    "openai_gpt-oss-120b": "GPT-OSS-120B",
    "openai_gpt-oss-20b": "GPT-OSS-20B",
    # Google / GCP
    "GCP_gemini-2.5-pro": "Gemini 2.5 Pro",
    "gemini-2.5-pro": "Gemini 2.5 Pro",
    "gcp_gemini-3-pro-preview": "Gemini 3 Pro",
    "gemini-3-pro-preview": "Gemini 3 Pro",
    "gemini-3-flash-preview": "Gemini 3 Flash",
    "google_gemini-3-flash-preview": "Gemini 3 Flash",
    # Moonshot AI
    "moonshotai_kimi-k2-thinking": "Kimi K2",
    "kimi-k2-thinking": "Kimi K2",
    # Anthropic / AWS
    "aws_claude-opus-4-5": "Claude Opus 4.5",
    # Mistral AI
    "mistralai_mistral-large-2512": "Mistral Large",
    # Alibaba / Qwen
    "qwen_qwen3-vl-32b-instruct": "Qwen3-VL-32B",
    # ServiceNow
    "ServiceNow-AI_Apriel-1.6-15b-Thinker": "Apriel-1.6-15B",
}


def get_model_name(dirname: str) -> str:
    """Extract model name from directory name."""
    name = dirname.replace("react with code_", "").replace("_07ccdb1", "")
    return MODEL_DISPLAY_NAMES.get(name, name)


def find_react_with_code_dirs(leaderboard_dir: Path) -> list[Path]:
    """Find all agent directories (excluding hidden and backup directories)."""
    dirs = []
    for d in leaderboard_dir.iterdir():
        if d.is_dir() and not d.name.startswith(".") and not d.name.startswith("backup_"):
            dirs.append(d)
    return sorted(dirs)


def read_judge_outputs_from_dir(agent_dir: Path) -> dict[str, list[dict]]:
    """
    Read all judge_output.json files from an agent directory.

    Returns:
        Dict mapping scenario_id -> list of judge outputs (one per trial)
    """
    scenario_data = {}

    # Check if directory contains Scenario folders directly, or if we need to go one level deeper
    # (e.g., agent_dir/sre/Scenario-1, agent_dir/finops/Scenario-1, etc.)
    has_scenarios = any(d.name.startswith("Scenario") for d in agent_dir.iterdir() if d.is_dir())

    if not has_scenarios:
        # Look for subdirectories that might contain scenarios (sre, finops, etc.)
        subdirs = [d for d in agent_dir.iterdir() if d.is_dir() and not d.name.startswith(".")]
        if len(subdirs) == 1:
            # If there's exactly one subdirectory, use it
            agent_dir = subdirs[0]
        elif len(subdirs) > 1:
            # If there are multiple, try to find one with Scenario folders
            for subdir in subdirs:
                if any(d.name.startswith("Scenario") for d in subdir.iterdir() if d.is_dir()):
                    agent_dir = subdir
                    break

    for scenario_dir in agent_dir.iterdir():
        if not scenario_dir.is_dir() or not scenario_dir.name.startswith("Scenario"):
            continue

        scenario_id = scenario_dir.name
        trials = []

        # Look for trial subdirectories (1, 2, 3, etc.)
        for trial_dir in sorted(scenario_dir.iterdir()):
            if not trial_dir.is_dir():
                continue

            judge_file = trial_dir / "judge_output.json"
            if judge_file.exists():
                try:
                    with open(judge_file) as f:
                        judge_data = json.load(f)
                    trials.append(judge_data)
                except Exception as e:
                    print(f"    Warning: Error reading {judge_file}: {e}")

        if trials:
            scenario_data[scenario_id] = trials

    return scenario_data


def extract_trial_scores_from_judge_outputs(
    scenario_data: dict[str, list[dict]],
    metric: str
) -> dict[str, list[float]]:
    """
    Extract per-trial scores for a given metric from judge outputs.

    Args:
        scenario_data: Dict mapping scenario_id -> list of judge outputs
        metric: The metric name to extract

    Returns:
        Dict mapping scenario_id -> list of trial scores
    """
    scenario_trials = {}

    for scenario_id, trials in scenario_data.items():
        scores = []
        for trial in trials:
            flat_scores = trial.get("flat_scores", {})
            score = flat_scores.get(metric)

            # Handle None/null values
            if score is None:
                score = 0.0
            scores.append(float(score))

        if scores:
            scenario_trials[scenario_id] = scores

    return scenario_trials


def get_runs_stats(scenario_data: dict[str, list], min_runs_required: int) -> tuple[int, int, int, int]:
    """Get run statistics: (n_scenarios, min_runs, max_runs, n_qualifying)."""
    if not scenario_data:
        return 0, 0, 0, 0

    run_counts = [len(trials) for trials in scenario_data.values()]
    n_qualifying = sum(1 for c in run_counts if c >= min_runs_required)
    return len(scenario_data), min(run_counts), max(run_counts), n_qualifying


def filter_scenarios_with_min_runs(scenario_data: dict[str, list], min_runs_required: int) -> dict[str, list]:
    """Filter to only include scenarios with >= min_runs_required runs."""
    return {
        scenario_id: trials
        for scenario_id, trials in scenario_data.items()
        if len(trials) >= min_runs_required
    }

def find_latest_rollout_file(trial_dir: Path) -> Path:
    """Find the latest rollout file in a trial's sessions directory or session.jsonl."""
    # First check for session.jsonl directly in trial_dir (new structure)
    session_file = trial_dir / "session.jsonl"
    if session_file.exists():
        return session_file

    # Fall back to sessions/rollout-*.jsonl (old structure)
    sessions_dir = trial_dir / "sessions"
    if not sessions_dir.exists():
        return None

    rollout_files = []
    for rollout_file in sessions_dir.rglob("rollout-*.jsonl"):
        rollout_files.append(rollout_file)

    if not rollout_files:
        return None

    # Sort by modification time and return the latest
    return max(rollout_files, key=lambda p: p.stat().st_mtime)