From f7f54ed4302a548cf05fbe549e88f1ef661e1c49 Mon Sep 17 00:00:00 2001
From: Martijn Versluis <martijnversluis@users.noreply.github.com>
Date: Thu, 16 Jul 2026 22:34:49 +0200
Subject: [PATCH] Expose sessionStart and sessionEnd on ongoing sessions

---
 lib/easee/session.rb       | 12 ++++++++++++
 spec/easee/session_spec.rb | 31 +++++++++++++++++++++++++++++++
 2 files changed, 43 insertions(+)
 create mode 100644 spec/easee/session_spec.rb

diff --git a/lib/easee/session.rb b/lib/easee/session.rb
index c39fc68..ecade00 100644
--- a/lib/easee/session.rb
+++ b/lib/easee/session.rb
@@ -7,5 +7,17 @@ def initialize(data)
     def id = @data.fetch(:sessionId)
 
     def energy = @data.fetch(:sessionEnergy).to_f
+
+    def session_start = parse_time(:sessionStart)
+    def session_end = parse_time(:sessionEnd)
+
+    private
+
+    def parse_time(key)
+      value = @data[key]
+      return if value.nil?
+
+      Time.zone.parse(value)
+    end
   end
 end
diff --git a/spec/easee/session_spec.rb b/spec/easee/session_spec.rb
new file mode 100644
index 0000000..bc6674f
--- /dev/null
+++ b/spec/easee/session_spec.rb
@@ -0,0 +1,31 @@
+RSpec.describe Easee::Session do
+  it "exposes the session fields" do
+    session = described_class.new(
+      "sessionId" => 12345,
+      "sessionEnergy" => 3.42,
+      "sessionStart" => "2026-01-05T10:00:00Z",
+      "sessionEnd" => "2026-01-05T11:30:00Z",
+    )
+
+    expect(session).to have_attributes(
+      id: 12345,
+      energy: 3.42,
+      session_start: Time.zone.parse("2026-01-05T10:00:00Z"),
+      session_end: Time.zone.parse("2026-01-05T11:30:00Z"),
+    )
+  end
+
+  it "returns nil for session_start and session_end when the fields are missing or null" do
+    session = described_class.new(
+      "sessionId" => 12345,
+      "sessionEnergy" => 0.0,
+      "sessionStart" => nil,
+      "sessionEnd" => nil,
+    )
+
+    expect(session).to have_attributes(
+      session_start: nil,
+      session_end: nil,
+    )
+  end
+end