From 18269020662b147d232209fd5c12eb44097f37f8 Mon Sep 17 00:00:00 2001
From: jmacxx <47253594+jmacxx@users.noreply.github.com>
Date: Thu, 28 Jan 2021 11:38:39 -0600
Subject: [PATCH] Replace deprecated bisq explorer settings

If user preferences were set to a bisq explorer that has been
retired, switch it to another explorer from the provided list.

Users can still choose their own explorer, or enter a custom
explorer address (such as their local node).
---
 core/src/main/java/bisq/core/user/Preferences.java | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/core/src/main/java/bisq/core/user/Preferences.java b/core/src/main/java/bisq/core/user/Preferences.java
index ee276d0ef0..f85a449bd9 100644
--- a/core/src/main/java/bisq/core/user/Preferences.java
+++ b/core/src/main/java/bisq/core/user/Preferences.java
@@ -309,15 +309,25 @@ public final class Preferences implements PersistedDataHost, BridgeAddressProvid
         useStandbyModeProperty.set(prefPayload.isUseStandbyMode());
         cssThemeProperty.set(prefPayload.getCssTheme());
 
+        // a list of previously-used federated explorers
+        // if user preference references any deprecated explorers we need to select a new valid explorer
+        String deprecatedExplorers = "(bsq.bisq.cc|bsq.vante.me|bsq.emzy.de|bsq.sqrrm.net|bsq.bisq.services|bsq.ninja).*";
+
         // if no valid Bitcoin block explorer is set, select the 1st valid Bitcoin block explorer
         ArrayList<BlockChainExplorer> btcExplorers = getBlockChainExplorers();
-        if (getBlockChainExplorer() == null || getBlockChainExplorer().name.length() == 0)
+        if (getBlockChainExplorer() == null ||
+                getBlockChainExplorer().name.length() == 0 ||
+                getBlockChainExplorer().name.matches(deprecatedExplorers)) {
             setBlockChainExplorer(btcExplorers.get(0));
+        }
 
         // if no valid BSQ block explorer is set, randomly select a valid BSQ block explorer
         ArrayList<BlockChainExplorer> bsqExplorers = getBsqBlockChainExplorers();
-        if (getBsqBlockChainExplorer() == null || getBsqBlockChainExplorer().name.length() == 0)
+        if (getBsqBlockChainExplorer() == null ||
+                getBsqBlockChainExplorer().name.length() == 0 ||
+                getBsqBlockChainExplorer().name.matches(deprecatedExplorers)) {
             setBsqBlockChainExplorer(bsqExplorers.get((new Random()).nextInt(bsqExplorers.size())));
+        }
 
         tradeCurrenciesAsObservable.addAll(prefPayload.getFiatCurrencies());
         tradeCurrenciesAsObservable.addAll(prefPayload.getCryptoCurrencies());