import { useEffect, useState } from "react";

import { ApiError } from "../../api/client";
import { Spinner } from "../../components/Spinner";
import { WIN_REASONS, type WinReason } from "../../domain/winReasons";
import { useToast } from "../../context/ToastContext";
import { useAdminFactions, useAdminMatch, useAdminUpdateMatch } from "../../hooks/admin";

interface Row {
  user_id: number;
  nickname: string;
  faction_id: number;
  place: number;
  was_random: boolean;
  comment: string;
}

export function AdminMatchEdit({ matchId, onClose }: { matchId: number; onClose: () => void }) {
  const { data: match, isLoading } = useAdminMatch(matchId);
  const { data: factions } = useAdminFactions();
  const update = useAdminUpdateMatch();
  const toast = useToast();

  const [rows, setRows] = useState<Row[]>([]);
  const [playedAt, setPlayedAt] = useState("");
  const [overall, setOverall] = useState("");
  const [winReason, setWinReason] = useState<WinReason>("objectives");
  const [error, setError] = useState<string | null>(null);

  useEffect(() => {
    if (match) {
      setRows(
        match.participants.map((p) => ({
          user_id: p.user_id,
          nickname: p.nickname,
          faction_id: p.faction_id,
          place: p.place ?? 1,
          was_random: p.was_random,
          comment: p.comment ?? "",
        })),
      );
      setPlayedAt(match.played_at);
      setOverall(match.overall_comment ?? "");
      if (match.win_reason) setWinReason(match.win_reason);
    }
  }, [match]);

  const upd = (i: number, patch: Partial<Row>) =>
    setRows((rs) => rs.map((r, idx) => (idx === i ? { ...r, ...patch } : r)));

  const save = async () => {
    setError(null);
    try {
      await update.mutateAsync({
        matchId,
        body: {
          played_at: playedAt,
          overall_comment: overall.trim() || null,
          win_reason: winReason,
          participants: rows.map((r) => ({
            user_id: r.user_id,
            faction_id: r.faction_id,
            place: r.place,
            was_random: r.was_random,
            comment: r.comment.trim() || null,
          })),
        },
      });
      toast.show("Партия обновлена");
      onClose();
    } catch (e) {
      setError(e instanceof ApiError ? e.message : "Не удалось сохранить");
    }
  };

  return (
    // Полноэкранная страница правки (не нижний «лист»): занимает весь экран.
    <div
      style={{
        position: "fixed",
        inset: 0,
        zIndex: 200,
        background: "var(--bg)",
        overflowY: "auto",
      }}
    >
      <div className="app-shell" style={{ minHeight: "100%", boxShadow: "none" }}>
        <div className="app-main" style={{ paddingBottom: 24 }}>
          <div className="row-between">
            <h2 style={{ margin: 0 }}>Правка партии #{matchId}</h2>
            <button className="btn btn-ghost" onClick={onClose}>
              ✕
            </button>
          </div>

          {isLoading || !match ? (
            <Spinner />
          ) : (
            <>
              <div className="field">
                <label className="label">Дата</label>
                <input type="date" value={playedAt} onChange={(e) => setPlayedAt(e.target.value)} />
              </div>

              {rows.map((r, i) => (
                <div className="participant-row" key={r.user_id}>
                  <b>{r.nickname}</b>
                  <div className="row">
                    <select
                      style={{ flex: 1 }}
                      value={r.faction_id}
                      onChange={(e) => upd(i, { faction_id: Number(e.target.value) })}
                    >
                      {(factions ?? []).map((f) => (
                        <option key={f.id} value={f.id}>
                          {f.name_ru}
                        </option>
                      ))}
                    </select>
                    <div style={{ flex: "0 0 90px" }}>
                      <input
                        type="number"
                        min={1}
                        value={r.place}
                        onChange={(e) => upd(i, { place: Math.max(1, Number(e.target.value) || 1) })}
                      />
                    </div>
                  </div>
                  <input
                    placeholder="Комментарий об игроке"
                    value={r.comment}
                    onChange={(e) => upd(i, { comment: e.target.value })}
                  />
                </div>
              ))}

              <div className="field">
                <label className="label">Причина победы</label>
                <select value={winReason} onChange={(e) => setWinReason(e.target.value as WinReason)}>
                  {WIN_REASONS.map((w) => (
                    <option key={w.code} value={w.code}>
                      {w.label}
                    </option>
                  ))}
                </select>
              </div>

              <div className="field">
                <label className="label">Комментарий о партии</label>
                <textarea rows={2} value={overall} onChange={(e) => setOverall(e.target.value)} />
              </div>

              {error && <p className="error-text">{error}</p>}

              <button className="btn btn-primary" style={{ width: "100%" }} onClick={save} disabled={update.isPending}>
                Сохранить изменения
              </button>
            </>
          )}
        </div>
      </div>
    </div>
  );
}