import React from 'react';
import { fmtWon } from '../lottoUtils';

const PurchasePanel = ({
    records, stats, loading,
    formOpen, form, formSaving, formError, editId,
    onFormOpen, onFormClose, onFormChange, onFormSubmit,
    onEditStart, onDelete,
}) => {
    const winRate = stats?.total_records > 0
        ? ((stats.prize_count / stats.total_records) * 100).toFixed(1)
        : '0.0';
    const netColor = (stats?.net ?? 0) >= 0 ? 'is-pos' : 'is-neg';

    return (
        <section className="lotto-panel lotto-panel--wide">
            <div className="lotto-panel__head">
                <div>
                    <p className="lotto-panel__eyebrow">Purchase Tracker</p>
                    <h3>구매 기록</h3>
                    <p className="lotto-panel__sub">구매 내역 기록 및 수익률 추적</p>
                </div>
                <div className="lotto-panel__actions">
                    {loading && <span className="lotto-chip">로딩 중</span>}
                    <button className="button small" onClick={onFormOpen} disabled={formOpen}>
                        + 추가
                    </button>
                </div>
            </div>

            {/* 통계 바 */}
            {stats && stats.total_records > 0 && (
                <div className="lotto-purchase-stats">
                    <div className="lotto-purchase-stat">
                        <span className="lotto-purchase-stat__val">{fmtWon(stats.total_invested)}</span>
                        <span className="lotto-purchase-stat__lbl">총 투자</span>
                    </div>
                    <div className="lotto-purchase-stat">
                        <span className="lotto-purchase-stat__val">{fmtWon(stats.total_prize)}</span>
                        <span className="lotto-purchase-stat__lbl">총 당첨금</span>
                    </div>
                    <div className="lotto-purchase-stat">
                        <span className={`lotto-purchase-stat__val ${netColor}`}>
                            {(stats.net ?? 0) >= 0 ? '+' : ''}{fmtWon(stats.net)}
                        </span>
                        <span className="lotto-purchase-stat__lbl">순손익</span>
                    </div>
                    <div className="lotto-purchase-stat">
                        <span className="lotto-purchase-stat__val">{stats.return_rate?.toFixed(1)}%</span>
                        <span className="lotto-purchase-stat__lbl">회수율</span>
                    </div>
                    <div className="lotto-purchase-stat">
                        <span className="lotto-purchase-stat__val">{winRate}%</span>
                        <span className="lotto-purchase-stat__lbl">당첨률</span>
                    </div>
                    {stats.max_prize > 0 && (
                        <div className="lotto-purchase-stat">
                            <span className="lotto-purchase-stat__val is-prize">{fmtWon(stats.max_prize)}</span>
                            <span className="lotto-purchase-stat__lbl">최대 당첨금</span>
                        </div>
                    )}
                </div>
            )}

            {/* 입력 폼 */}
            {formOpen && (
                <form className="lotto-purchase-form" onSubmit={onFormSubmit}>
                    <p className="lotto-purchase-form__title">
                        {editId != null ? '기록 수정' : '구매 기록 추가'}
                    </p>
                    <div className="lotto-purchase-form__grid">
                        <label className="lotto-field">
                            회차
                            <input
                                type="number" min={1}
                                value={form.draw_no}
                                onChange={(e) => onFormChange('draw_no', e.target.value)}
                                placeholder="예: 1181"
                                required
                            />
                        </label>
                        <label className="lotto-field">
                            구매금액
                            <input
                                type="number" step={1000} min={1000}
                                value={form.amount}
                                onChange={(e) => onFormChange('amount', Number(e.target.value))}
                            />
                        </label>
                        <label className="lotto-field">
                            세트 수
                            <input
                                type="number" min={1} max={20}
                                value={form.sets}
                                onChange={(e) => onFormChange('sets', Number(e.target.value))}
                            />
                        </label>
                        <label className="lotto-field">
                            당첨금
                            <input
                                type="number" min={0}
                                value={form.prize}
                                onChange={(e) => onFormChange('prize', Number(e.target.value))}
                            />
                        </label>
                        <label className="lotto-field lotto-purchase-form__note">
                            메모
                            <input
                                type="text"
                                value={form.note}
                                onChange={(e) => onFormChange('note', e.target.value)}
                                placeholder="예: 5등 1개"
                            />
                        </label>
                    </div>
                    {formError && (
                        <p className="lotto-empty" style={{ color: '#f9b6b1' }}>{formError}</p>
                    )}
                    <div className="lotto-purchase-form__actions">
                        <button type="button" className="button ghost small" onClick={onFormClose}>
                            취소
                        </button>
                        <button type="submit" className="button primary small" disabled={formSaving}>
                            {formSaving ? '저장 중...' : editId != null ? '수정 완료' : '추가'}
                        </button>
                    </div>
                </form>
            )}

            {/* 기록 목록 */}
            {records.length === 0 ? (
                <p className="lotto-empty">구매 기록이 없습니다.</p>
            ) : (
                <div className="lotto-purchase-list">
                    <div className="lotto-purchase-list__head">
                        <span>회차</span>
                        <span>투자금</span>
                        <span>당첨금</span>
                        <span>손익</span>
                        <span>메모</span>
                        <span />
                    </div>
                    {records.map((rec) => {
                        const net = (rec.prize ?? 0) - (rec.amount ?? 0);
                        return (
                            <div key={rec.id} className="lotto-purchase-row">
                                <span className="lotto-purchase-row__drw">{rec.draw_no}회</span>
                                <span>{fmtWon(rec.amount)}</span>
                                <span className={(rec.prize ?? 0) > 0 ? 'is-prize' : ''}>
                                    {fmtWon(rec.prize)}
                                </span>
                                <span className={net >= 0 ? 'is-pos' : 'is-neg'}>
                                    {net >= 0 ? '+' : ''}{fmtWon(net)}
                                </span>
                                <span className="lotto-purchase-row__note">{rec.note || '-'}</span>
                                <div className="lotto-purchase-row__actions">
                                    <button className="button ghost small" onClick={() => onEditStart(rec)}>
                                        수정
                                    </button>
                                    <button className="button danger small" onClick={() => onDelete(rec.id)}>
                                        삭제
                                    </button>
                                </div>
                            </div>
                        );
                    })}
                </div>
            )}
        </section>
    );
};

export default PurchasePanel;
