from __future__ import annotations

import json

from fastapi import APIRouter, HTTPException

from web.api import db

router = APIRouter()


@router.get("/api/tss/live")
async def live(limit: int = 50) -> dict:
    rows = await db.query(db.battles_path(),
        "SELECT * FROM match_summary ORDER BY endtime_unix DESC LIMIT ?",
        (max(1, min(limit, 200)),))
    return {"total": len(rows), "matches": rows}


def _roster_team(rows: list[dict], slot: str, winning: str, losing: str, draw: int) -> dict:
    players = [r for r in rows if (r.get("team_slot") or "") == slot]
    for p in players:
        p["UID"] = str(p["UID"])
    return {
        "team_slot": slot,
        "team_name": players[0]["team_name"] if players else None,
        "team_id": players[0]["team_id"] if players else None,
        "is_winner": (not draw) and slot == winning,
        "is_loser": (not draw) and slot == losing,
        "players": players,
    }


@router.get("/api/tss/match/{session_id}")
async def match(session_id: str) -> dict:
    summary = await db.query_one(db.battles_path(),
        "SELECT * FROM match_summary WHERE session_id = ?", (session_id,))
    if not summary:
        raise HTTPException(status_code=404, detail=f"match {session_id} not found")
    rows = await db.query(db.battles_path(),
        "SELECT * FROM player_games_hist WHERE session_id = ?", (session_id,))
    slots = sorted({(r.get("team_slot") or "") for r in rows if r.get("team_slot")})
    teams = [_roster_team(rows, s, summary["winning_slot"], summary["losing_slot"],
                          summary["draw"]) for s in slots]
    return {"match": summary, "teams": teams}


@router.get("/api/tss/match/{session_id}/scoreboard")
async def scoreboard(session_id: str) -> dict:
    base = await match(session_id)  # reuses 404 + roster logic
    logs_row = await db.query_one(db.battles_path(),
        "SELECT chat_log_json, battle_log_json, event_log_json FROM match_logs WHERE session_id = ?",
        (session_id,))
    if logs_row:
        def _parse(v):
            try:
                return json.loads(v) if v else None
            except (json.JSONDecodeError, TypeError):
                return None
        logs = {"available": True,
                "chat": _parse(logs_row["chat_log_json"]),
                "battle": _parse(logs_row["battle_log_json"]),
                "events": _parse(logs_row["event_log_json"])}
    else:
        logs = {"available": False}
    return {**base, "logs": logs}


@router.get("/api/tss/matches/search")
async def matches_search(player: str | None = None, team: str | None = None,
                         mission: str | None = None, tournament: str | None = None,
                         time_from: int | None = None, time_to: int | None = None,
                         limit: int = 50) -> dict:
    clauses: list[str] = []
    params: list = []
    join = ""
    if player or team:
        join = "JOIN player_games_hist p ON p.session_id = m.session_id"
        if player:
            clauses.append("p.UID = ?"); params.append(player)
        if team:
            clauses.append("p.team_name = ?"); params.append(team)
    if mission:
        clauses.append("m.mission_name LIKE ?"); params.append(f"%{mission}%")
    if tournament:
        clauses.append("m.tournament_name LIKE ?"); params.append(f"%{tournament}%")
    if time_from is not None:
        clauses.append("m.endtime_unix >= ?"); params.append(time_from)
    if time_to is not None:
        clauses.append("m.endtime_unix <= ?"); params.append(time_to)
    where = ("WHERE " + " AND ".join(clauses)) if clauses else ""
    params.append(max(1, min(limit, 200)))
    rows = await db.query(db.battles_path(),
        f"SELECT DISTINCT m.* FROM match_summary m {join} {where} "
        f"ORDER BY m.endtime_unix DESC LIMIT ?", tuple(params))
    return {"total": len(rows), "matches": rows}


@router.get("/api/tss/maps")
async def maps() -> dict:
    rows = await db.query(db.battles_path(),
        "SELECT DISTINCT mission_name, level_path FROM match_summary "
        "WHERE mission_name IS NOT NULL ORDER BY mission_name")
    return {"total": len(rows), "maps": rows}