remove inconsistent fields from market stats (#1082)

* remove inconsistent fields from market stats

* remove unused fields

Author: AlaaElattar

app/lib/models/market_data.dart

@@ -1,18 +1,14 @@
 class TftMarketData {
   final double lastPrice;
   final double lastUsdPrice;
-  final double change24h;
   final double high24h;
   final double low24h;
-  final double volume24h;
 
   TftMarketData({
     required this.lastPrice,
     required this.lastUsdPrice,
-    required this.change24h,
     required this.high24h,
     required this.low24h,
-    required this.volume24h,
   });
 
   factory TftMarketData.fromTrades(List<dynamic> trades) {
@@ -25,41 +21,28 @@ class TftMarketData {
 
     double high24h = lastUsdcPrice;
     double low24h = lastUsdcPrice;
-    double volume24h = 0;
-
-    final oldestTrade = trades.last;
-    final double oldestUsdcPrice = double.parse(oldestTrade['base_amount']) /
-        double.parse(oldestTrade['counter_amount']);
 
     for (var trade in trades) {
       double usdcPrice = double.parse(trade['base_amount']) /
           double.parse(trade['counter_amount']);
       high24h = usdcPrice > high24h ? usdcPrice : high24h;
       low24h = usdcPrice < low24h ? usdcPrice : low24h;
-      volume24h += double.parse(trade['counter_amount']);
     }
 
-    final double change24h =
-        ((lastUsdcPrice - oldestUsdcPrice) / oldestUsdcPrice) * 100;
-
     return TftMarketData(
       lastPrice: 1 / lastPrice,
       lastUsdPrice: lastUsdcPrice,
-      change24h: change24h,
       high24h: high24h,
       low24h: low24h,
-      volume24h: volume24h / 1000,
     );
   }
 
   factory TftMarketData.empty() {
     return TftMarketData(
       lastPrice: 0,
       lastUsdPrice: 0,
-      change24h: 0,
       high24h: 0,
       low24h: 0,
-      volume24h: 0,
     );
   }
 }

app/lib/screens/market/overview.dart

@@ -440,8 +440,6 @@ class _OverviewWidgetState extends ConsumerState<OverviewWidget> {
                                                 '${marketData!.lastPrice.toStringAsFixed(7)} USDC'),
                                             _buildMarketColumn('Last USD Price',
                                                 '\$${marketData!.lastUsdPrice.toStringAsFixed(7)}'),
-                                            _buildMarketColumn('24H Change',
-                                                '${marketData!.change24h.toStringAsFixed(7)}%'),
                                           ],
                                         ),
                                       ),
@@ -455,8 +453,6 @@ class _OverviewWidgetState extends ConsumerState<OverviewWidget> {
                                                 '${marketData!.high24h.toStringAsFixed(7)} USDC'),
                                             _buildMarketColumn('24H Low',
                                                 '${marketData!.low24h.toStringAsFixed(7)} USDC'),
-                                            _buildMarketColumn('24H Volume',
-                                                '${marketData!.volume24h.toStringAsFixed(7)}K USDC'),
                                           ],
                                         ),
                                       ),