from __future__ import annotations

from typing import Any, Mapping

from .constants import GOLD_COMPANION_REPO, PUBLIC_DATASET_REPO


SPACE_URL = "https://huggingface.co/spaces/AgenticFinLab/H2EPR-Bench-Explorer"
PUBLIC_DATASET_URL = f"https://huggingface.co/datasets/{PUBLIC_DATASET_REPO}"
GOLD_COMPANION_URL = f"https://huggingface.co/datasets/{GOLD_COMPANION_REPO}"


def _first_value(value: Any) -> str:
    if isinstance(value, (list, tuple)):
        return str(value[0]).strip() if value else ""
    return str(value or "").strip()


def query_param_event_id(query_params: Mapping[str, Any]) -> str:
    return _first_value(query_params.get("event_id"))


def resolve_selected_event_index(rows: list[dict[str, Any]], requested_event_id: str = "") -> int:
    if not rows:
        return 0
    if requested_event_id:
        for index, row in enumerate(rows):
            if str(row.get("event_id", "")).strip() == requested_event_id:
                return index
    return 0


def build_event_links(event_id: str, gantt_html_path: str = "") -> dict[str, str]:
    event_id = event_id.strip()
    links = {
        "explorer": f"{SPACE_URL}?event_id={event_id}",
        "public_dataset": PUBLIC_DATASET_URL,
        "gold_request": GOLD_COMPANION_URL,
        "finalcascade_jsonl": f"{PUBLIC_DATASET_URL}/blob/main/data/finmycelium_finalcascade_public.jsonl",
    }
    if gantt_html_path:
        links["gantt_html"] = f"{PUBLIC_DATASET_URL}/blob/main/{gantt_html_path.lstrip('/')}"
    return links


def filter_summary_text(filtered_count: int, total_count: int) -> str:
    return f"Showing {filtered_count:,} of {total_count:,} events"