feat: pull through max leverage to dlc connect

webapp/frontend/lib/services/trade_constraints_service.dart

@@ -64,6 +64,10 @@ class TradeConstraints {
   @JsonKey(name: 'channel_fee_reserve_sats')
   final int channelFeeReserveSats;
 
+  /// The max leverage the trader can take
+  @JsonKey(name: 'max_leverage')
+  final int maxLeverage;
+
   const TradeConstraints({
     required this.maxLocalBalanceSats,
     required this.maxCounterpartyBalanceSats,
@@ -73,6 +77,7 @@ class TradeConstraints {
     required this.minMarginSats,
     required this.estimatedFundingTxFeeSats,
     required this.channelFeeReserveSats,
+    required this.maxLeverage,
   });
 
   factory TradeConstraints.fromJson(Map<String, dynamic> json) => _$TradeConstraintsFromJson(json);

webapp/frontend/lib/trade/leverage_slider.dart

@@ -1,8 +1,10 @@
 import 'package:flutter/material.dart';
 import 'package:font_awesome_flutter/font_awesome_flutter.dart';
+import 'package:get_10101/change_notifier/trade_constraint_change_notifier.dart';
 import 'package:get_10101/common/color.dart';
 import 'package:get_10101/common/theme.dart';
 import 'package:intl/intl.dart';
+import 'package:provider/provider.dart';
 import 'package:syncfusion_flutter_sliders/sliders.dart';
 import 'package:syncfusion_flutter_core/theme.dart' as slider_theme;
 
@@ -11,7 +13,6 @@ const gradientColors = <Color>[Colors.green, Colors.deepOrange];
 const LinearGradient gradient = LinearGradient(colors: gradientColors);
 
 const double minLeverage = 1.0;
-const double maxLeverage = 5.0;
 
 /// Slider that allows the user to select a leverage between minLeverage and maxLeverage.
 /// It uses linear scale and fractional leverage values are rounded to the nearest integer.
@@ -36,6 +37,12 @@ class _LeverageSliderState extends State<LeverageSlider> {
 
   @override
   Widget build(BuildContext context) {
+    TradeConstraintsChangeNotifier tradeConstraintsChangeNotifier =
+        context.read<TradeConstraintsChangeNotifier>();
+
+    double maxLeverage =
+        tradeConstraintsChangeNotifier.tradeConstraints?.maxLeverage.toDouble() ?? 5.0;
+
     return InputDecorator(
       decoration: InputDecoration(
         border: const OutlineInputBorder(),

webapp/src/api.rs

@@ -18,6 +18,7 @@ use native::api::WalletHistoryItemType;
 use native::calculations::calculate_pnl;
 use native::channel_trade_constraints;
 use native::dlc;
+use native::state::try_get_tentenone_config;
 use native::trade::order::FailureReason;
 use native::trade::order::InvalidSubchannelOffer;
 use rust_decimal::prelude::ToPrimitive;
@@ -965,6 +966,7 @@ pub struct TradeConstraints {
     pub min_margin_sats: u64,
     pub estimated_funding_tx_fee_sats: u64,
     pub channel_fee_reserve_sats: u64,
+    pub max_leverage: u8,
 }
 
 #[utoipa::path(
@@ -976,6 +978,7 @@ responses(
 )]
 pub async fn get_trade_constraints() -> Result<Json<TradeConstraints>, AppError> {
     let trade_constraints = channel_trade_constraints::channel_trade_constraints()?;
+    let ten_one_config = try_get_tentenone_config().context("Could not read 10101 config")?;
     let fee = dlc::estimated_funding_tx_fee()?;
     let channel_fee_reserve = dlc::estimated_fee_reserve()?;
     Ok(Json(TradeConstraints {
@@ -987,6 +990,7 @@ pub async fn get_trade_constraints() -> Result<Json<TradeConstraints>, AppError>
         min_margin_sats: trade_constraints.min_margin,
         estimated_funding_tx_fee_sats: fee.to_sat(),
         channel_fee_reserve_sats: channel_fee_reserve.to_sat(),
+        max_leverage: ten_one_config.max_leverage,
     }))
 }