From a8e80e0a158ae7fd8c8d1746511ab874518aeab9 Mon Sep 17 00:00:00 2001
From: Mukan Erkin <mukanerkin@cw.tr>
Date: Sat, 25 Apr 2026 12:29:29 +0300
Subject: [PATCH] fix(mse): chart price precision from actual data + kline
 limit 1000
MIME-Version: 1.0
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- priceFormat precision derived from Binance kline close string decimal count
  instead of hardcoded 2 — DOGE shows 0.09849 not 0.10
- kline limit 200 → 1000 to show more history from bot start

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 src/web/bot.html | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/web/bot.html b/src/web/bot.html
index 390c34f..1ecb0d7 100644
--- a/src/web/bot.html
+++ b/src/web/bot.html
@@ -488,6 +488,7 @@ function initChart() {
     upColor: '#2ecc71', downColor: '#e74c3c',
     borderUpColor: '#2ecc71', borderDownColor: '#e74c3c',
     wickUpColor: '#2ecc71', wickDownColor: '#e74c3c',
+    priceFormat: { type: 'price', precision: 8, minMove: 0.00000001 },
   });
   chart.subscribeCrosshairMove(p => {
     if (!p.seriesData || !p.seriesData.size) return;
@@ -508,9 +509,19 @@ function initChart() {
 async function loadKlines() {
   const interval = TF_MAP[bot.timeframe] || '5m';
   try {
-    const res = await fetch(`https://api.binance.com/api/v3/klines?symbol=${bot.symbol}&interval=${interval}&limit=200`);
+    const res = await fetch(`https://api.binance.com/api/v3/klines?symbol=${bot.symbol}&interval=${interval}&limit=1000`);
     const data = await res.json();
     const candles = data.map(k => ({ time: Math.floor(k[0]/1000), open: parseFloat(k[1]), high: parseFloat(k[2]), low: parseFloat(k[3]), close: parseFloat(k[4]) }));
+
+    // fiyatın ondalık basamak sayısını ilk kapanış fiyatından türet
+    if (candles.length) {
+      const sample = data[data.length - 1][4]; // son kapanış string olarak
+      const dotIdx = sample.indexOf('.');
+      const decimals = dotIdx >= 0 ? sample.length - dotIdx - 1 : 0;
+      const minMove = decimals > 0 ? parseFloat('0.' + '0'.repeat(decimals - 1) + '1') : 1;
+      candleSeries.applyOptions({ priceFormat: { type: 'price', precision: decimals, minMove } });
+    }
+
     candleSeries.setData(candles);
     chart.timeScale().scrollToRealTime();
     chart.timeScale().setVisibleLogicalRange({ from: candles.length - 80, to: candles.length + 5 });