From 53c2018a5f80e4f05cb54aac663e953f6863af9e Mon Sep 17 00:00:00 2001
From: Hwee-Boon Yar <hboon@motionobj.com>
Date: Sat, 28 Mar 2020 16:03:40 +0800
Subject: [PATCH] Make token balance displayed be always 4 decimal places,
 except for send confirmation and transaction details screen and for fiat to
 be 2 decimal places. Rounding down is always used.

In particular, this affects:

* balance in wallets list screen and token screen (with send/receive buttons)
* fiat in send screen
---
 AlphaWallet/Accounts/ViewModels/AccountViewModel.swift          | 2 +-
 AlphaWallet/Core/Formatters/CurrencyFormatter.swift             | 1 +
 AlphaWallet/Foundation/StringFormatter.swift                    | 1 +
 AlphaWallet/Transactions/ViewModels/BalanceTokenViewModel.swift | 2 +-
 4 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/AlphaWallet/Accounts/ViewModels/AccountViewModel.swift b/AlphaWallet/Accounts/ViewModels/AccountViewModel.swift
index 1e798d867..0c551af24 100644
--- a/AlphaWallet/Accounts/ViewModels/AccountViewModel.swift
+++ b/AlphaWallet/Accounts/ViewModels/AccountViewModel.swift
@@ -22,7 +22,7 @@ struct AccountViewModel {
         return wallet.type == .watch(wallet.address)
     }
     var balance: String {
-        let amount = walletBalance?.amountFull ?? "--"
+        let amount = walletBalance?.amountShort ?? "--"
         return "\(amount) \(server.symbol)"
     }
     var address: AlphaWallet.Address {
diff --git a/AlphaWallet/Core/Formatters/CurrencyFormatter.swift b/AlphaWallet/Core/Formatters/CurrencyFormatter.swift
index d291cbf10..634227b2d 100644
--- a/AlphaWallet/Core/Formatters/CurrencyFormatter.swift
+++ b/AlphaWallet/Core/Formatters/CurrencyFormatter.swift
@@ -7,6 +7,7 @@ class CurrencyFormatter {
         let formatter = NumberFormatter()
         formatter.minimumFractionDigits = 2
         formatter.maximumFractionDigits = 2
+        formatter.roundingMode = .down
         //TODO support multiple currency values
         formatter.currencyCode = Currency.USD.rawValue
         formatter.numberStyle = .currency
diff --git a/AlphaWallet/Foundation/StringFormatter.swift b/AlphaWallet/Foundation/StringFormatter.swift
index 0223d69ad..6be074a32 100644
--- a/AlphaWallet/Foundation/StringFormatter.swift
+++ b/AlphaWallet/Foundation/StringFormatter.swift
@@ -9,6 +9,7 @@ final class StringFormatter {
         formatter.currencySymbol = ""
         formatter.minimumFractionDigits = 2
         formatter.maximumFractionDigits = 2
+        formatter.roundingMode = .down
         formatter.numberStyle = .currencyAccounting
         formatter.isLenient = true
         return formatter
diff --git a/AlphaWallet/Transactions/ViewModels/BalanceTokenViewModel.swift b/AlphaWallet/Transactions/ViewModels/BalanceTokenViewModel.swift
index 19b6993b4..7921e2dd1 100644
--- a/AlphaWallet/Transactions/ViewModels/BalanceTokenViewModel.swift
+++ b/AlphaWallet/Transactions/ViewModels/BalanceTokenViewModel.swift
@@ -14,7 +14,7 @@ struct BalanceTokenViewModel: BalanceBaseViewModel {
     }
 
     var amountShort: String {
-        return EtherNumberFormatter.full.string(from: token.valueBigInt, decimals: token.decimals)
+        return EtherNumberFormatter.short.string(from: token.valueBigInt, decimals: token.decimals)
     }
 
     var name: String {