Centralize legacy cloud bridge

src/app_core/document_cloud.h

@@ -1,7 +1,10 @@
 #pragma once
 
+#include "foundation/result.h"
+
 #include <cstddef>
 #include <limits>
+#include <string>
 #include <string_view>
 
 namespace pp::app {
@@ -33,6 +36,25 @@ struct CloudBulkUploadPlan {
     bool show_progress = false;
 };
 
+struct CloudDownloadRequest {
+    std::string selected_file;
+    std::string selected_path;
+    std::string selected_name;
+};
+
+class CloudServices {
+public:
+    virtual ~CloudServices() = default;
+
+    virtual void show_save_required_warning() = 0;
+    virtual void prompt_publish(bool save_before_upload) = 0;
+    virtual void begin_bulk_upload(int progress_total, bool show_progress) = 0;
+    virtual void upload_all_bulk_files() = 0;
+    virtual void end_bulk_upload() = 0;
+    virtual void show_browser() = 0;
+    virtual void start_download(const CloudDownloadRequest& request) = 0;
+};
+
 [[nodiscard]] constexpr CloudUploadPlan plan_cloud_upload(
     bool has_canvas,
     bool is_new_document,
@@ -76,4 +98,66 @@ struct CloudBulkUploadPlan {
     };
 }
 
+[[nodiscard]] inline pp::foundation::Status execute_cloud_upload_plan(
+    const CloudUploadPlan& plan,
+    CloudServices& services)
+{
+    switch (plan.action) {
+    case CloudUploadAction::unavailable_no_canvas:
+        return pp::foundation::Status::success();
+    case CloudUploadAction::show_save_required_warning:
+        services.show_save_required_warning();
+        return pp::foundation::Status::success();
+    case CloudUploadAction::prompt_publish:
+        services.prompt_publish(plan.save_before_upload);
+        return pp::foundation::Status::success();
+    }
+
+    return pp::foundation::Status::invalid_argument("unknown cloud upload action");
+}
+
+[[nodiscard]] inline pp::foundation::Status execute_cloud_bulk_upload_plan(
+    const CloudBulkUploadPlan& plan,
+    CloudServices& services)
+{
+    services.begin_bulk_upload(plan.progress_total, plan.show_progress);
+    services.upload_all_bulk_files();
+    services.end_bulk_upload();
+    return pp::foundation::Status::success();
+}
+
+[[nodiscard]] inline pp::foundation::Status execute_cloud_browse_action(
+    CloudBrowseAction action,
+    CloudServices& services)
+{
+    switch (action) {
+    case CloudBrowseAction::unavailable_no_canvas:
+        return pp::foundation::Status::success();
+    case CloudBrowseAction::show_browser:
+        services.show_browser();
+        return pp::foundation::Status::success();
+    }
+
+    return pp::foundation::Status::invalid_argument("unknown cloud browse action");
+}
+
+[[nodiscard]] inline pp::foundation::Status execute_cloud_download_selection_action(
+    CloudDownloadSelectionAction action,
+    CloudServices& services,
+    const CloudDownloadRequest& request)
+{
+    switch (action) {
+    case CloudDownloadSelectionAction::wait_for_selection:
+        return pp::foundation::Status::success();
+    case CloudDownloadSelectionAction::start_download:
+        if (request.selected_file.empty()) {
+            return pp::foundation::Status::invalid_argument("cloud download requires a selected file");
+        }
+        services.start_download(request);
+        return pp::foundation::Status::success();
+    }
+
+    return pp::foundation::Status::invalid_argument("unknown cloud download selection action");
+}
+
 }