Files
web-page/src/pages/lotto/Functions.jsx

769 lines
31 KiB
JavaScript

import React, { useEffect, useMemo, useRef, useState } from 'react';
import { deleteHistory, getHistory, getLatest, getStats, recommend } from '../../api';
const fmtKST = (value) => value?.replace('T', ' ') ?? '';
const ballClass = (n) => {
if (n <= 10) return 'lotto-ball range-a';
if (n <= 20) return 'lotto-ball range-b';
if (n <= 30) return 'lotto-ball range-c';
if (n <= 40) return 'lotto-ball range-d';
return 'lotto-ball range-e';
};
const Ball = ({ n }) => <span className={ballClass(n)}>{n}</span>;
const NumberRow = ({ nums }) => (
<div className="lotto-row">
{nums.map((n) => (
<Ball key={n} n={n} />
))}
</div>
);
const bucketOrder = ['1-10', '11-20', '21-30', '31-40', '41-45'];
const STATS_CACHE_KEY = 'lotto_stats_v1';
const readStatsCache = () => {
if (typeof window === 'undefined') return null;
try {
const raw = localStorage.getItem(STATS_CACHE_KEY);
if (!raw) return null;
const parsed = JSON.parse(raw);
if (!parsed || !Array.isArray(parsed.frequency)) return null;
return parsed;
} catch {
return null;
}
};
const writeStatsCache = (data) => {
if (typeof window === 'undefined') return;
try {
localStorage.setItem(STATS_CACHE_KEY, JSON.stringify(data));
} catch {
// ignore storage failures
}
};
const buildFrequencySeries = (frequency) => {
const map = new Map();
(frequency ?? []).forEach((item) => {
const number = Number(item?.number);
const count = Number(item?.count) || 0;
if (Number.isFinite(number) && number >= 1 && number <= 45) {
map.set(number, count);
}
});
const series = Array.from({ length: 45 }, (_, idx) => ({
number: idx + 1,
count: map.get(idx + 1) ?? 0,
}));
const max = Math.max(1, ...series.map((item) => item.count));
return { series, max };
};
const buildMetricsFromCounts = (counts) => {
if (!counts?.length) return null;
const total = counts.reduce((acc, value) => acc + value, 0);
if (!total) return null;
const min = Math.min(...counts);
const max = Math.max(...counts);
const range = max - min;
const odd = counts.reduce(
(acc, value, idx) => (idx % 2 === 0 ? acc + value : acc),
0
);
const even = total - odd;
const buckets = {
'1-10': counts.slice(0, 10).reduce((a, b) => a + b, 0),
'11-20': counts.slice(10, 20).reduce((a, b) => a + b, 0),
'21-30': counts.slice(20, 30).reduce((a, b) => a + b, 0),
'31-40': counts.slice(30, 40).reduce((a, b) => a + b, 0),
'41-45': counts.slice(40, 45).reduce((a, b) => a + b, 0),
};
return { sum: total, min, max, range, odd, even, buckets };
};
const buildMetricsFromFrequency = (frequency) => {
if (!frequency?.length) return null;
const counts = Array.from({ length: 45 }, () => 0);
frequency.forEach((item) => {
const number = Number(item?.number);
const count = Number(item?.count) || 0;
if (number >= 1 && number <= 45) {
counts[number - 1] = count;
}
});
return buildMetricsFromCounts(counts);
};
const buildMetricsFromHistory = (items) => {
if (!items?.length) return null;
const counts = Array.from({ length: 45 }, () => 0);
items.forEach((item) => {
(item?.numbers ?? []).forEach((value) => {
const number = Number(value);
if (number >= 1 && number <= 45) {
counts[number - 1] += 1;
}
});
});
return buildMetricsFromCounts(counts);
};
const toBucketEntries = (metrics) => {
if (!metrics?.buckets) return [];
const entries = Object.entries(metrics.buckets);
const ordered = bucketOrder
.filter((key) => Object.prototype.hasOwnProperty.call(metrics.buckets, key))
.map((key) => [key, metrics.buckets[key]]);
const rest = entries
.filter(([key]) => !bucketOrder.includes(key))
.sort((a, b) => {
const aStart = Number(a[0].split('-')[0]);
const bStart = Number(b[0].split('-')[0]);
if (Number.isNaN(aStart) || Number.isNaN(bStart)) return 0;
return aStart - bStart;
});
return [...ordered, ...rest];
};
const MetricBlock = ({ title, metrics }) => {
if (!metrics) return null;
const buckets = toBucketEntries(metrics);
const maxBucket = buckets.length
? Math.max(...buckets.map(([, value]) => Number(value) || 0), 1)
: 1;
const odd = Number(metrics.odd) || 0;
const even = Number(metrics.even) || 0;
const totalOE = odd + even || 1;
const oddPct = (odd / totalOE) * 100;
return (
<div className="lotto-metrics">
<div className="lotto-metrics__head">
<p className="lotto-metrics__title">{title}</p>
<span className="lotto-metrics__sum">
출현 횟수 {metrics.sum ?? '-'}
</span>
</div>
<div className="lotto-metric-cards">
<div className="lotto-metric-card">
<p className="lotto-metric-card__label">최소 출현</p>
<p className="lotto-metric-card__value">{metrics.min ?? '-'}</p>
</div>
<div className="lotto-metric-card">
<p className="lotto-metric-card__label">최대 출현</p>
<p className="lotto-metric-card__value">{metrics.max ?? '-'}</p>
</div>
<div className="lotto-metric-card">
<p className="lotto-metric-card__label">출현 편차</p>
<p className="lotto-metric-card__value">{metrics.range ?? '-'}</p>
</div>
</div>
<div className="lotto-odd-even">
<div className="lotto-odd-even__labels">
<span> {odd}</span>
<span> {even}</span>
</div>
<div className="lotto-odd-even__bar" aria-hidden>
<span className="lotto-odd-even__odd" style={{ width: `${oddPct}%` }} />
<span
className="lotto-odd-even__even"
style={{ width: `${100 - oddPct}%` }}
/>
</div>
</div>
{buckets.length ? (
<div className="lotto-buckets">
{buckets.map(([label, value]) => (
<div key={label} className="lotto-bucket">
<span className="lotto-bucket__label">{label}</span>
<div className="lotto-bucket__bar" aria-hidden>
<span
style={{ width: `${((Number(value) || 0) / maxBucket) * 100}%` }}
/>
</div>
<span className="lotto-bucket__value">{value}</span>
</div>
))}
</div>
) : null}
</div>
);
};
const FrequencyChart = ({ stats }) => {
const { series, max } = useMemo(
() => buildFrequencySeries(stats?.frequency),
[stats]
);
const ticks = useMemo(() => {
const mid = Math.round(max * 0.5);
return [max, mid, 0];
}, [max]);
if (!stats) return null;
return (
<div className="lotto-chart">
<div className="lotto-chart__y">
<span>횟수</span>
<div className="lotto-chart__ticks">
{ticks.map((value) => (
<span key={value}>{value}</span>
))}
</div>
</div>
<div className="lotto-chart__plot" role="list">
{series.map((item) => {
const showLabel = item.number === 1 || item.number % 5 === 0;
return (
<div
key={item.number}
className="lotto-chart__col"
role="listitem"
>
<span
className="lotto-chart__bar"
style={{ height: `${(item.count / max) * 100}%` }}
title={`${item.number}번: ${item.count}`}
aria-label={`${item.number}${item.count}`}
/>
<span className="lotto-chart__x" aria-hidden={!showLabel}>
{showLabel ? item.number : ''}
</span>
</div>
);
})}
</div>
</div>
);
};
export default function Functions() {
const [latest, setLatest] = useState(null);
const [params, setParams] = useState({
recent_window: 200,
recent_weight: 2.0,
avoid_recent_k: 5,
});
const presets = useMemo(
() => [
{ name: '기본', recent_window: 200, recent_weight: 2.0, avoid_recent_k: 5 },
{ name: '최근 가중치↑', recent_window: 100, recent_weight: 3.0, avoid_recent_k: 10 },
{ name: '안전(분산)', recent_window: 300, recent_weight: 1.6, avoid_recent_k: 8 },
{ name: '공격(최근)', recent_window: 80, recent_weight: 3.5, avoid_recent_k: 12 },
],
[]
);
const [result, setResult] = useState(null);
const [history, setHistory] = useState([]);
const [historyExpanded, setHistoryExpanded] = useState(false);
const historyEndRef = useRef(null);
const prevHistoryExpandedRef = useRef(false);
const [stats, setStats] = useState(() => readStatsCache());
const [statsLoading, setStatsLoading] = useState(false);
const [statsError, setStatsError] = useState('');
const [loading, setLoading] = useState({
latest: false,
recommend: false,
history: false,
});
const [error, setError] = useState('');
const overallMetrics = useMemo(
() => buildMetricsFromFrequency(stats?.frequency),
[stats]
);
const historyMetrics = useMemo(
() => buildMetricsFromHistory(history),
[history]
);
const refreshLatest = async () => {
setLoading((s) => ({ ...s, latest: true }));
setError('');
try {
const data = await getLatest();
setLatest(data);
} catch (e) {
setError(e?.message ?? String(e));
} finally {
setLoading((s) => ({ ...s, latest: false }));
}
};
const refreshHistory = async () => {
setLoading((s) => ({ ...s, history: true }));
setError('');
try {
const limit = 100;
let offset = 0;
const allItems = [];
while (true) {
const data = await getHistory(limit, offset);
const items = data.items ?? [];
allItems.push(...items);
if (items.length < limit) break;
offset += limit;
}
setHistory(allItems);
} catch (e) {
setError(e?.message ?? String(e));
} finally {
setLoading((s) => ({ ...s, history: false }));
}
};
const refreshStats = async () => {
setStatsLoading(true);
setStatsError('');
try {
const cached = readStatsCache();
if (cached && !stats) {
setStats(cached);
}
const data = await getStats();
const shouldUpdate =
!cached || cached.total_draws !== data?.total_draws;
if (shouldUpdate) {
setStats(data);
writeStatsCache(data);
}
} catch (e) {
setStatsError(e?.message ?? String(e));
} finally {
setStatsLoading(false);
}
};
const onRecommend = async () => {
setLoading((s) => ({ ...s, recommend: true }));
setError('');
try {
const data = await recommend(params);
setResult(data);
await refreshHistory();
} catch (e) {
setError(e?.message ?? String(e));
} finally {
setLoading((s) => ({ ...s, recommend: false }));
}
};
const onDelete = async (id) => {
const ok = confirm(`히스토리 #${id}를 삭제할까요?`);
if (!ok) return;
setError('');
try {
await deleteHistory(id);
setHistory((prev) => prev.filter((item) => item.id !== id));
} catch (e) {
setError(e?.message ?? String(e));
}
};
const copyNumbers = async (nums) => {
const text = nums.join(', ');
try {
await navigator.clipboard.writeText(text);
alert(`복사 완료: ${text}`);
} catch {
prompt('복사해서 사용하세요:', text);
}
};
useEffect(() => {
refreshLatest();
refreshHistory();
refreshStats();
}, []);
const visibleHistory = historyExpanded ? history : history.slice(0, 5);
useEffect(() => {
if (historyExpanded && !prevHistoryExpandedRef.current) {
requestAnimationFrame(() => {
historyEndRef.current?.scrollIntoView({
behavior: 'smooth',
block: 'end',
});
});
}
prevHistoryExpandedRef.current = historyExpanded;
}, [historyExpanded, visibleHistory.length]);
return (
<div className="lotto-functions">
{error ? (
<div className="lotto-alert">
<div>
<p className="lotto-alert__title">오류</p>
<p className="lotto-alert__message">{error}</p>
</div>
<button className="button ghost small" onClick={() => setError('')}>
닫기
</button>
</div>
) : null}
<div className="lotto-grid">
<section className="lotto-panel">
<div className="lotto-panel__head">
<div>
<p className="lotto-panel__eyebrow">Latest Draw</p>
<h3>최신 회차</h3>
<p className="lotto-panel__sub">
최신 회차와 번호를 빠르게 확인할 있습니다.
</p>
</div>
<div className="lotto-panel__actions">
{loading.latest ? <span className="lotto-chip">로딩 </span> : null}
<button
className="button ghost small"
onClick={refreshLatest}
disabled={loading.latest}
>
새로고침
</button>
</div>
</div>
{latest ? (
<>
<div className="lotto-meta">
<div>
<p className="lotto-meta__title">{latest.drawNo}</p>
<p className="lotto-meta__date">{latest.date}</p>
</div>
<button
className="button small"
onClick={() => copyNumbers(latest.numbers)}
>
번호 복사
</button>
</div>
<NumberRow nums={latest.numbers} />
<p className="lotto-bonus">
보너스 <strong>{latest.bonus}</strong>
</p>
{overallMetrics ? (
<MetricBlock
title="당첨 통계 (전체 회차)"
metrics={overallMetrics}
/>
) : null}
</>
) : (
<p className="lotto-empty">최신 회차 데이터가 없습니다.</p>
)}
</section>
<section className="lotto-panel">
<div className="lotto-panel__head">
<div>
<p className="lotto-panel__eyebrow">Recommendation</p>
<h3>추천 생성</h3>
<p className="lotto-panel__sub">
파라미터를 조정해 다른 추천 전략을 만들 있습니다.
</p>
</div>
<div className="lotto-panel__actions">
{loading.recommend ? <span className="lotto-chip">계산 </span> : null}
</div>
</div>
<div className="lotto-presets">
{presets.map((preset) => (
<button
key={preset.name}
className="button ghost small"
onClick={() =>
setParams({
recent_window: preset.recent_window,
recent_weight: preset.recent_weight,
avoid_recent_k: preset.avoid_recent_k,
})
}
>
{preset.name}
</button>
))}
</div>
<div className="lotto-form">
<label className="lotto-field">
recent_window
<span>최근 N회차 가중치 범위</span>
<input
type="number"
min={20}
max={1000}
value={params.recent_window}
onChange={(e) =>
setParams((s) => ({
...s,
recent_window: Number(e.target.value),
}))
}
/>
</label>
<label className="lotto-field">
recent_weight
<span>최근 회차 가중치</span>
<input
type="number"
step="0.1"
min={0.5}
max={10}
value={params.recent_weight}
onChange={(e) =>
setParams((s) => ({
...s,
recent_weight: Number(e.target.value),
}))
}
/>
</label>
<label className="lotto-field">
avoid_recent_k
<span>최근 K회차 중복 회피</span>
<input
type="number"
min={0}
max={50}
value={params.avoid_recent_k}
onChange={(e) =>
setParams((s) => ({
...s,
avoid_recent_k: Number(e.target.value),
}))
}
/>
</label>
</div>
<button
className="button primary"
onClick={onRecommend}
disabled={loading.recommend}
>
추천 받기
</button>
{result ? (
<div className="lotto-result">
<div className="lotto-result__meta">
<div>
<p className="lotto-result__id">추천 ID #{result.id}</p>
<p className="lotto-result__based">
기준 회차 {result.based_on_latest_draw ?? '-'}
</p>
</div>
<button
className="button small"
onClick={() => copyNumbers(result.numbers)}
>
번호 복사
</button>
</div>
{result.numbers ? <NumberRow nums={result.numbers} /> : null}
{historyMetrics ? (
<div className="lotto-compare">
<MetricBlock
title="추천 통계 (히스토리)"
metrics={historyMetrics}
/>
</div>
) : null}
{Array.isArray(result.items) && result.items.length ? (
<details className="lotto-details">
<summary>추천 후보 보기</summary>
<div className="lotto-batch">
{result.items.map((item, idx) => (
<div
key={item.id ?? `candidate-${idx}`}
className="lotto-batch__item"
>
<div className="lotto-batch__meta">
<div>
<p className="lotto-batch__title">
후보 #{item.id ?? idx + 1}
</p>
<p className="lotto-batch__sub">
기준 회차 {item.based_on_draw ?? '-'}
</p>
</div>
<button
className="button ghost small"
onClick={() => copyNumbers(item.numbers)}
>
복사
</button>
</div>
<NumberRow nums={item.numbers} />
{item.metrics ? (
<MetricBlock
title="후보 통계"
metrics={item.metrics}
/>
) : null}
</div>
))}
</div>
</details>
) : null}
{result.explain ? (
<details className="lotto-details">
<summary>설명 보기</summary>
<pre>{JSON.stringify(result.explain, null, 2)}</pre>
</details>
) : null}
</div>
) : (
<p className="lotto-empty">아직 추천 결과가 없습니다.</p>
)}
</section>
</div>
<section className="lotto-panel lotto-panel--wide">
<div className="lotto-panel__head">
<div>
<p className="lotto-panel__eyebrow">Distribution</p>
<h3>전체 회차 번호 분포</h3>
<p className="lotto-panel__sub">
1~45 번호가 등장한 횟수를 기준으로 분포를 표시합니다.
</p>
</div>
<div className="lotto-panel__actions">
{statsLoading ? (
<span className="lotto-chip">로딩 </span>
) : null}
{stats?.total_draws ? (
<span className="lotto-chip">
{stats.total_draws}회차
</span>
) : null}
<button
className="button ghost small"
onClick={refreshStats}
disabled={statsLoading}
>
새로고침
</button>
</div>
</div>
{statsError ? <p className="lotto-empty">{statsError}</p> : null}
{stats ? (
<FrequencyChart stats={stats} />
) : (
<p className="lotto-empty">
통계 데이터를 불러오지 못했습니다.
</p>
)}
</section>
<section className="lotto-panel">
<div className="lotto-panel__head">
<div>
<p className="lotto-panel__eyebrow">History</p>
<h3>추천 히스토리</h3>
<p className="lotto-panel__sub">
최근 추천 결과를 모아서 확인할 있습니다.
</p>
</div>
<div className="lotto-panel__actions">
<span className="lotto-chip">{history.length}</span>
{history.length > 5 ? (
<button
className="button ghost small lotto-history-toggle"
onClick={() =>
setHistoryExpanded((prev) => !prev)
}
aria-expanded={historyExpanded}
aria-label={
historyExpanded
? '히스토리 접기'
: '히스토리 더보기'
}
>
{historyExpanded ? '접기' : '더보기'}
<span
className={`lotto-history-toggle__icon ${
historyExpanded ? 'is-open' : ''
}`}
aria-hidden
>
</span>
</button>
) : null}
<button
className="button ghost small"
onClick={refreshHistory}
disabled={loading.history}
>
새로고침
</button>
</div>
</div>
{loading.history ? <p className="lotto-empty">불러오는 ...</p> : null}
{history.length === 0 ? (
<p className="lotto-empty">저장된 히스토리가 없습니다.</p>
) : (
<div className="lotto-history">
{visibleHistory.map((item) => (
<div key={item.id} className="lotto-history__item">
<div className="lotto-history__meta">
<p>#{item.id}</p>
<p>{fmtKST(item.created_at)}</p>
<p>기준 회차 {item.based_on_draw ?? '-'}</p>
</div>
<div className="lotto-history__body">
<NumberRow nums={item.numbers} />
<p className="lotto-history__params">
window={item.params?.recent_window}, weight=
{item.params?.recent_weight}, avoid_k=
{item.params?.avoid_recent_k}
</p>
</div>
<div className="lotto-history__actions">
<button
className="button ghost small"
onClick={() => copyNumbers(item.numbers)}
>
복사
</button>
<button
className="button danger small"
onClick={() => onDelete(item.id)}
>
삭제
</button>
</div>
</div>
))}
<span ref={historyEndRef} />
</div>
)}
</section>
<footer className="lotto-foot">
backend: FastAPI / nginx proxy / DB: sqlite {' '}
<a className="lotto-foot__link" href="/lotto-api.md" download>
API 스펙 다운로드
</a>
</footer>
</div>
);
}