Change priority of company name algorithm

Before, the UiTheme took the highest priority in the algorithm to determine the
company name. Now the remote company name has the highest priority, with the
added constraint that it cannot be empty, as this will be the default value on
the default locale. In case it is empty, the UiTheme will come afterwards, then
the SDK configuration, and finally the local fallback.

MOB-2733

GliaWidgets/Public/Glia/Glia+StartEngagement.swift

@@ -48,12 +48,12 @@ extension Glia {
 
         theme.chat.connect.queue.firstText = companyName(
             using: interactor,
-            currentName: theme.chat.connect.queue.firstText
+            themeCompanyName: theme.chat.connect.queue.firstText
         )
 
         theme.call.connect.queue.firstText = companyName(
             using: interactor,
-            currentName: theme.call.connect.queue.firstText
+            themeCompanyName: theme.call.connect.queue.firstText
         )
 
         let viewFactory = ViewFactory(
@@ -81,20 +81,23 @@ extension Glia {
 
     func companyName(
         using interactor: Interactor,
-        currentName: String?
+        themeCompanyName: String?
     ) -> String {
-        // As the default value is empty, it means that the integrator
-        // has set a value on the theme itself. Return that same value.
-        if let currentName, !currentName.isEmpty {
-            return currentName
-        }
-
         let companyNameStringKey = "general.company_name"
 
-        // Company name has been set on the custom locale.
-        if let remoteCompanyName = stringProviding?.getRemoteString(companyNameStringKey) {
+        // Company name has been set on the custom locale and is not empty.
+        if
+            let remoteCompanyName = stringProviding?.getRemoteString(companyNameStringKey),
+            !remoteCompanyName.isEmpty
+        {
             return remoteCompanyName
         }
+        // As the default value in the theme is not empty, it means that
+        // the integrator has set a value on the theme itself. Return that
+        // same value.
+        else if let themeCompanyName, !themeCompanyName.isEmpty {
+            return themeCompanyName
+        }
         // Integrator has not set a company name in the custom locale,
         // but has set it on the configuration.
         else if !interactor.configuration.companyName.isEmpty {

GliaWidgetsTests/Sources/Glia/GliaTests+StartEngagement.swift

@@ -111,8 +111,13 @@ extension GliaTests {
 
         let sdk = Glia(environment: environment)
 
+        // Even if theme is set, the remote string takes priority.
+        let theme = Theme()
+        theme.call.connect.queue.firstText = "Glia 1"
+        theme.chat.connect.queue.firstText = "Glia 2"
+
         try sdk.configure(with: .mock()) { }
-        try sdk.startEngagement(engagementKind: .chat, in: ["queueId"])
+        try sdk.startEngagement(engagementKind: .chat, in: ["queueId"], theme: theme)
 
         let configuredSdkTheme = resultingViewFactory?.theme
         XCTAssertEqual(configuredSdkTheme?.call.connect.queue.firstText, "Glia")
@@ -174,4 +179,43 @@ extension GliaTests {
         XCTAssertEqual(configuredSdkTheme?.call.connect.queue.firstText, "Company Name")
         XCTAssertEqual(configuredSdkTheme?.chat.connect.queue.firstText, "Company Name")
     }
+
+    func testCompanyNameIsReceivedFromThemeIfCustomLocalesIsEmpty() throws {
+        var environment = Glia.Environment.failing
+        var resultingViewFactory: ViewFactory?
+
+        environment.createRootCoordinator = { _, viewFactory, _, _, _, _, _ in
+            resultingViewFactory = viewFactory
+
+            return .mock(
+                interactor: .mock(environment: .failing),
+                viewFactory: viewFactory,
+                sceneProvider: nil,
+                engagementKind: .none,
+                screenShareHandler: .mock,
+                features: [],
+                environment: .failing
+            )
+        }
+
+        environment.coreSdk.localeProvider.getRemoteString = { _ in "" }
+        environment.coreSdk.configureWithInteractor = { _ in }
+        environment.coreSdk.configureWithConfiguration = { _, completion in
+            completion?()
+        }
+        environment.coreSdk.getCurrentEngagement = { nil }
+
+        let sdk = Glia(environment: environment)
+
+        let theme = Theme()
+        theme.call.connect.queue.firstText = "Glia 1"
+        theme.chat.connect.queue.firstText = "Glia 2"
+
+        try sdk.configure(with: .mock())
+        try sdk.startEngagement(engagementKind: .chat, in: ["queueId"], theme: theme)
+
+        let configuredSdkTheme = resultingViewFactory?.theme
+        XCTAssertEqual(configuredSdkTheme?.call.connect.queue.firstText, "Glia 1")
+        XCTAssertEqual(configuredSdkTheme?.chat.connect.queue.firstText, "Glia 2")
+    }
 }