"""Trifecta-Bro MCP Server (MCP 2.0 / FastMCP-style)."""

from __future__ import annotations

import json
from datetime import date as date_type, timedelta
from pathlib import Path
from typing import Any

from mcp.server.mcpserver import MCPServer
from mcp.types import TextContent

mcp = MCPServer("trifecta-bro")

REPO_ROOT = Path(__file__).resolve().parents[1]
PREDICTIONS_DIR = REPO_ROOT / "data" / "predictions"
PDF_DIR = REPO_ROOT / "data" / "pdfs"
PREDICTIONS_DIR.mkdir(parents=True, exist_ok=True)
PDF_DIR.mkdir(parents=True, exist_ok=True)


def _predictions_path(for_date: str) -> Path:
    return PREDICTIONS_DIR / f"predictions-{for_date}.json"


def _load_predictions(for_date: str) -> dict[str, Any]:
    p = _predictions_path(for_date)
    if not p.exists():
        raise FileNotFoundError(f"No predictions for {for_date}")
    return json.loads(p.read_text())


def _pdfs() -> list[str]:
    if not PDF_DIR.exists():
        return []
    return sorted([p.name for p in PDF_DIR.glob("*.pdf")])


@mcp.tool(name="trifecta.get_predictions")
def get_predictions(for_date: str | None = None) -> list[TextContent]:
    """Return stored trifecta predictions for a date.

    If *for_date* is omitted, tomorrow's date (Australia/Adelaide) is used.
    """
    target = for_date or (date_type.today() + timedelta(days=1)).isoformat()
    try:
        payload = _load_predictions(target)
    except FileNotFoundError:
        return [TextContent(type="text", text=json.dumps({
            "error": f"No predictions for {target}",
            "date": target,
            "tip": "Run generate_predictions.py or run_daily_analysis() first.",
        }, indent=2))]
    payload["_meta"] = {"date": target, "server": "trifecta-bro-mcp"}
    return [TextContent(type="text", text=json.dumps(payload, indent=2))]


@mcp.tool(name="trifecta.get_race")
def get_race(for_date: str, race_number: int) -> list[TextContent]:
    """Return a single race block from stored predictions."""
    target = for_date
    try:
        payload = _load_predictions(target)
    except FileNotFoundError:
        return [TextContent(type="text", text=json.dumps({
            "error": f"No predictions for {target}"
        }, indent=2))]
    for race in payload.get("races", []):
        if int(race.get("race_number", 0)) == int(race_number):
            pred = race.get("prediction", {})
            out = {
                "date": target,
                "race_number": race.get("race_number"),
                "race_name": race.get("race_name"),
                "track": race.get("track"),
                "distance": race.get("distance"),
                "condition": race.get("condition"),
                "race_class": race.get("race_class"),
                "prize_money": race.get("prize_money"),
                "number_of_runners": race.get("number_of_runners"),
                "prediction": pred,
            }
            return [TextContent(type="text", text=json.dumps(out, indent=2))]
    return [TextContent(type="text", text=json.dumps({
        "error": f"Race {race_number} not found for {target}"
    }, indent=2))]


@mcp.tool(name="trifecta.list_pdfs")
def list_pdfs() -> list[TextContent]:
    """List generated PDF report filenames."""
    return [TextContent(type="text", text=json.dumps({"pdfs": _pdfs()}, indent=2))]


@mcp.tool(name="trifecta.get_latest_meetings")
def get_latest_meetings(for_date: str | None = None) -> list[TextContent]:
    """List available meeting dates with stored predictions."""
    target = for_date or (date_type.today() + timedelta(days=1)).isoformat()
    dates = sorted([p.stem.replace("predictions-", "") for p in PREDICTIONS_DIR.glob("predictions-*.json")])
    return [TextContent(type="text", text=json.dumps({
        "date": target,
        "available_dates": dates,
        "count": len(dates),
    }, indent=2))]


@mcp.tool(name="trifecta.health")
def health() -> list[TextContent]:
    """Server health and repo status."""
    return [TextContent(type="text", text=json.dumps({
        "server": "trifecta-bro-mcp",
        "status": "ok",
        "repo_root": str(REPO_ROOT),
        "predictions_dir": str(PREDICTIONS_DIR),
        "pdf_dir": str(PDF_DIR),
        "predictions_count": len(list(PREDICTIONS_DIR.glob("predictions-*.json"))) if PREDICTIONS_DIR.exists() else 0,
        "pdf_count": len(_pdfs()),
    }, indent=2))]


if __name__ == "__main__":
    import asyncio
    asyncio.run(mcp.run_stdio_async())