REFACTOR: naming and state refactor (#19187)

- better handling of drawer state using chat state manager
- removes various float and topic occurrences to use drawer
- ensures user can chat before doing a lot of chat setup
- fixes a bug which was creating presence errors in tests
- removes dead code

plugins/chat/test/javascripts/unit/services/chat-state-manager-test.js

@@ -71,12 +71,63 @@ module(
       assert.strictEqual(this.subject.lastKnownAppURL, "/bar");
     });
 
-    test("isFullPage", function (assert) {
+    test("isFullPageActive", function (assert) {
       sinon.stub(this.subject.router, "currentRouteName").value("foo");
-      assert.notOk(this.subject.isFullPage);
+      assert.notOk(this.subject.isFullPageActive);
 
       sinon.stub(this.subject.router, "currentRouteName").value("chat");
-      assert.ok(this.subject.isFullPage);
+      assert.ok(this.subject.isFullPageActive);
+    });
+
+    test("didCollapseDrawer", function (assert) {
+      this.subject.didCollapseDrawer();
+
+      assert.strictEqual(this.subject.isDrawerExpanded, false);
+      assert.strictEqual(this.subject.isDrawerActive, true);
+    });
+
+    test("didExpandDrawer", function (assert) {
+      const stub = sinon.stub(
+        this.owner.lookup("service:chat"),
+        "updatePresence"
+      );
+
+      this.subject.didExpandDrawer();
+
+      assert.strictEqual(this.subject.isDrawerExpanded, true);
+      assert.strictEqual(this.subject.isDrawerActive, true);
+      sinon.assert.calledOnce(stub);
+    });
+
+    test("didCloseDrawer", function (assert) {
+      const stub = sinon.stub(
+        this.owner.lookup("service:chat"),
+        "updatePresence"
+      );
+
+      this.subject.didCloseDrawer();
+
+      assert.strictEqual(this.subject.isDrawerExpanded, false);
+      assert.strictEqual(this.subject.isDrawerActive, false);
+      sinon.assert.calledOnce(stub);
+    });
+
+    test("didOpenDrawer", function (assert) {
+      const stub = sinon.stub(
+        this.owner.lookup("service:chat"),
+        "updatePresence"
+      );
+
+      this.subject.didOpenDrawer();
+
+      assert.strictEqual(this.subject.isDrawerExpanded, true);
+      assert.strictEqual(this.subject.isDrawerActive, true);
+      assert.strictEqual(this.subject.lastKnownChatURL, "/chat");
+
+      this.subject.didOpenDrawer("/foo");
+
+      assert.strictEqual(this.subject.lastKnownChatURL, "/foo");
+      sinon.assert.calledTwice(stub);
     });
   }
 );