Add manga chapter viewing

1 files changed, 146 insertions, 0 deletions

diff --git a/src/plugins/Manganelo.cpp b/src/plugins/Manganelo.cpp
new file mode 100644
index 0000000..bc99387
--- /dev/null
+++ b/src/plugins/Manganelo.cpp
@@ -0,0 +1,146 @@
+#include "../../plugins/Manganelo.hpp"
+#include <quickmedia/HtmlSearch.h>
+#include <json/reader.h>
+
+namespace QuickMedia {
+    SearchResult Manganelo::search(const std::string &url, std::vector<std::unique_ptr<BodyItem>> &result_items, Page &next_page) {
+        next_page = Page::EPISODE_LIST;
+
+        std::string website_data;
+        if(download_to_string(url, website_data) != DownloadResult::OK)
+            return SearchResult::NET_ERR;
+
+        QuickMediaHtmlSearch html_search;
+        int result = quickmedia_html_search_init(&html_search, website_data.c_str());
+        if(result != 0)
+            goto cleanup;
+
+        result = quickmedia_html_find_nodes_xpath(&html_search, "//div[class='chapter-list']/div[class='row']//a",
+            [](QuickMediaHtmlNode *node, void *userdata) {
+                auto *item_data = (std::vector<std::unique_ptr<BodyItem>>*)userdata;
+                const char *href = quickmedia_html_node_get_attribute_value(node, "href");
+                const char *text = quickmedia_html_node_get_text(node);
+                if(href && text) {
+                    auto item = std::make_unique<BodyItem>(text);
+                    item->url = href;
+                    item_data->push_back(std::move(item));
+                }
+            }, &result_items);
+
+        cleanup:
+        quickmedia_html_search_deinit(&html_search);
+        return result == 0 ? SearchResult::OK : SearchResult::ERR;
+    }
+
+    // Returns true if changed
+    static bool remove_html_span(std::string &str) {
+        size_t open_tag_start = str.find("<span");
+        if(open_tag_start == std::string::npos)
+            return false;
+
+        size_t open_tag_end = str.find('>', open_tag_start + 5);
+        if(open_tag_end == std::string::npos)
+            return false;
+
+        str.erase(open_tag_start, open_tag_end - open_tag_start + 1);
+
+        size_t close_tag = str.find("</span>");
+        if(close_tag == std::string::npos)
+            return true;
+
+        str.erase(close_tag, 7);
+        return true;
+    }
+
+    SuggestionResult Manganelo::update_search_suggestions(const std::string &text, std::vector<std::unique_ptr<BodyItem>> &result_items) {
+        std::string url = "https://manganelo.com/home_json_search";
+        std::string search_term = "searchword=";
+        search_term += url_param_encode(text);
+        CommandArg data_arg = { "--data", std::move(search_term) };
+
+        std::string server_response;
+        if(download_to_string(url, server_response, {data_arg}) != DownloadResult::OK)
+            return SuggestionResult::NET_ERR;
+
+        if(server_response.empty())
+            return SuggestionResult::OK;
+
+        Json::Value json_root;
+        Json::CharReaderBuilder json_builder;
+        std::unique_ptr<Json::CharReader> json_reader(json_builder.newCharReader());
+        std::string json_errors;
+        if(json_reader->parse(&server_response.front(), &server_response.back(), &json_root, &json_errors)) {
+            fprintf(stderr, "Manganelo suggestions json error: %s\n", json_errors.c_str());
+            return SuggestionResult::ERR;
+        }
+
+        if(json_root.isArray()) {
+            for(const Json::Value &child : json_root) {
+                if(child.isObject()) {
+                    Json::Value name = child.get("name", "");
+                    Json::Value nameunsigned = child.get("nameunsigned", "");
+                    if(name.isString() && name.asCString()[0] != '\0' && nameunsigned.isString() && nameunsigned.asCString()[0] != '\0') {
+                        std::string name_str = name.asString();
+                        while(remove_html_span(name_str)) {}
+                        if(name_str != text) {
+                            auto item = std::make_unique<BodyItem>(name_str);
+                            item->url = "https://manganelo.com/manga/" + url_param_encode(nameunsigned.asString());
+                            result_items.push_back(std::move(item));
+                        }
+                    }
+                }
+            }
+        }
+        return SuggestionResult::OK;
+    }
+
+    ImageResult Manganelo::get_image_by_index(const std::string &url, int index, std::string &image_data) {
+        if(url != last_chapter_url) {
+            printf("Get list of image urls for chapter: %s\n", url.c_str());
+            last_chapter_image_urls.clear();
+            ImageResult image_result = get_image_urls_for_chapter(url, last_chapter_image_urls);
+            if(image_result != ImageResult::OK)
+                return image_result;
+            last_chapter_url = url;
+        }
+
+        int num_images = last_chapter_image_urls.size();
+        if(index < 0 || index >= num_images)
+            return ImageResult::END;
+        
+        // TODO: Cache image in file/memory
+        switch(download_to_string(last_chapter_image_urls[index], image_data)) {
+            case DownloadResult::OK:
+                return ImageResult::OK;
+            case DownloadResult::ERR:
+                return ImageResult::ERR;
+            case DownloadResult::NET_ERR:
+                return ImageResult::NET_ERR;
+            default:
+                return ImageResult::ERR;
+        }
+    }
+
+    ImageResult Manganelo::get_image_urls_for_chapter(const std::string &url, std::vector<std::string> &urls) {
+        std::string website_data;
+        if(download_to_string(url, website_data) != DownloadResult::OK)
+            return ImageResult::NET_ERR;
+
+        QuickMediaHtmlSearch html_search;
+        int result = quickmedia_html_search_init(&html_search, website_data.c_str());
+        if(result != 0)
+            goto cleanup;
+
+        result = quickmedia_html_find_nodes_xpath(&html_search, "//div[id='vungdoc']/img",
+            [](QuickMediaHtmlNode *node, void *userdata) {
+                auto *urls = (std::vector<std::string>*)userdata;
+                const char *src = quickmedia_html_node_get_attribute_value(node, "src");
+                if(src)
+                    urls->push_back(src);
+            }, &urls);
+
+        cleanup:
+        quickmedia_html_search_deinit(&html_search);
+        return result == 0 ? ImageResult::OK : ImageResult::ERR;
+    }
+}
\ No newline at end of file