From ab36fbffef977b99cc03d0b77ac37bdc1b5705dc Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Wed, 14 Apr 2021 19:52:21 +0200
Subject: Rework manga plugins downloading.. preparing for parallel downloads

---
 include/AsyncTask.hpp   | 22 +++++++---------------
 include/ImageViewer.hpp |  4 +---
 include/QuickMedia.hpp  |  4 +++-
 3 files changed, 11 insertions(+), 19 deletions(-)

(limited to 'include')

diff --git a/include/AsyncTask.hpp b/include/AsyncTask.hpp
index abdc0f8..6148923 100644
--- a/include/AsyncTask.hpp
+++ b/include/AsyncTask.hpp
@@ -5,25 +5,17 @@
 #include <future>
 
 namespace QuickMedia {
-    template <typename T>
+    template <class T, class... Args>
     class AsyncTask {
     public:
-        using CallbackFunc = std::function<T()>;
+        using CallbackFunc = std::function<T(Args&&... args)>;
 
         AsyncTask() = default;
 
-        AsyncTask(CallbackFunc callback_func) {
+        AsyncTask(CallbackFunc callback_func, Args&&... args) {
             std::promise<T> promise;
             future = promise.get_future();
-            thread = std::thread(&AsyncTask::thread_handler, this, std::move(promise), std::move(callback_func));
-        }
-
-        AsyncTask& operator=(CallbackFunc callback_func) {
-            cancel();
-            std::promise<T> promise;
-            future = promise.get_future();
-            thread = std::thread(&AsyncTask::thread_handler, this, std::move(promise), std::move(callback_func));
-            return *this;
+            thread = std::thread(&AsyncTask::thread_handler, this, std::move(promise), std::move(callback_func), std::forward<Args>(args)...);
         }
 
         AsyncTask(AsyncTask &&other) {
@@ -63,12 +55,12 @@ namespace QuickMedia {
             }
         }
     private:
-        void thread_handler(std::promise<T> &&promise, CallbackFunc callback_func) {
+        void thread_handler(std::promise<T> &&promise, CallbackFunc callback_func, Args&&... args) {
             if constexpr(std::is_same<T, void>::value) {
-                callback_func();
+                callback_func(std::forward<Args>(args)...);
                 promise.set_value();
             } else {
-                promise.set_value(callback_func());
+                promise.set_value(callback_func(std::forward<Args>(args)...));
             }
         }
     private:
diff --git a/include/ImageViewer.hpp b/include/ImageViewer.hpp
index cd1bc8f..c29ea13 100644
--- a/include/ImageViewer.hpp
+++ b/include/ImageViewer.hpp
@@ -15,8 +15,6 @@ namespace sf {
 }
 
 namespace QuickMedia {
-    class MangaImagesPage;
-
     enum class ImageStatus {
         WAITING,
         LOADING,
@@ -46,7 +44,7 @@ namespace QuickMedia {
 
     class ImageViewer {
     public:
-        ImageViewer(sf::RenderWindow *window, MangaImagesPage *manga_images_page, const std::string &content_title, const std::string &chapter_title, int current_page, const Path &chapter_cache_dir);
+        ImageViewer(sf::RenderWindow *window, int num_pages, const std::string &content_title, const std::string &chapter_title, int current_page, const Path &chapter_cache_dir);
         ~ImageViewer();
         ImageViewerAction draw();
         // Returns page as 1 indexed
diff --git a/include/QuickMedia.hpp b/include/QuickMedia.hpp
index 2877e0c..b387968 100644
--- a/include/QuickMedia.hpp
+++ b/include/QuickMedia.hpp
@@ -160,12 +160,14 @@ namespace QuickMedia {
         std::unordered_set<std::string> watched_videos;
         AsyncTask<BodyItems> search_suggestion_future;
         AsyncTask<std::string> autocomplete_future;
-        AsyncTask<void> image_download_future;
+        AsyncTask<void, std::promise<int>> image_download_future;
         std::thread image_upscale_thead;
         MessageQueue<CopyOp> images_to_upscale_queue;
         std::vector<char> image_upscale_status;
         std::string downloading_chapter_url;
         bool image_download_cancel = false;
+        std::future<int> num_manga_pages_future;
+        int num_manga_pages = 0;
         int exit_code = 0;
         std::string resources_root;
         sf::Shader circle_mask_shader;
-- 
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