From 02f5b0a81893dc8b1a63e7e0f134ac10905a992e Mon Sep 17 00:00:00 2001
From: Anton Khorev <tony29@yandex.ru>
Date: Sun, 16 Mar 2025 02:11:22 +0300
Subject: [PATCH] Add 'before' parameter to history pages

---
 app/assets/javascripts/index/history.js |  5 +++++
 test/system/history_test.rb             | 30 +++++++++++++++++++++++++
 2 files changed, 35 insertions(+)

diff --git a/app/assets/javascripts/index/history.js b/app/assets/javascripts/index/history.js
index 6e4e73a23..dddd84354 100644
--- a/app/assets/javascripts/index/history.js
+++ b/app/assets/javascripts/index/history.js
@@ -57,6 +57,7 @@ OSM.History = function (map) {
 
   function update() {
     const data = new URLSearchParams();
+    const params = new URLSearchParams(location.search);
 
     if (location.pathname === "/history") {
       data.set("bbox", map.getBounds().wrap().toBBoxString());
@@ -67,6 +68,10 @@ OSM.History = function (map) {
 
     data.set("list", "1");
 
+    if (params.has("before")) {
+      data.set("before", params.get("before"));
+    }
+
     fetch(location.pathname + "?" + data)
       .then(response => response.text())
       .then(function (html) {
diff --git a/test/system/history_test.rb b/test/system/history_test.rb
index 679f711b3..4f2114f25 100644
--- a/test/system/history_test.rb
+++ b/test/system/history_test.rb
@@ -53,6 +53,36 @@ class HistoryTest < ApplicationSystemTestCase
     end
   end
 
+  test "user history starts before specified changeset" do
+    user = create(:user)
+    changeset1 = create_visible_changeset(user, "1st-changeset-in-history")
+    changeset2 = create_visible_changeset(user, "2nd-changeset-in-history")
+    changeset3 = create(:changeset)
+
+    visit "#{user_path user}/history?before=#{changeset1.id}"
+
+    within_sidebar do
+      assert_no_link "1st-changeset-in-history"
+      assert_no_link "2nd-changeset-in-history"
+    end
+
+    visit "#{user_path user}/history?before=#{changeset2.id}"
+
+    within_sidebar do
+      assert_link "1st-changeset-in-history"
+      assert_no_link "2nd-changeset-in-history"
+    end
+
+    visit "#{user_path user}/history?before=#{changeset3.id}"
+
+    within_sidebar do
+      assert_link "1st-changeset-in-history"
+      assert_link "2nd-changeset-in-history"
+    end
+  end
+
+  private
+
   def create_visible_changeset(user, comment)
     create(:changeset, :user => user, :num_changes => 1) do |changeset|
       create(:changeset_tag, :changeset => changeset, :k => "comment", :v => comment)
-- 
2.39.5