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#include "../../plugins/Youtube.hpp"
#include <quickmedia/HtmlSearch.h>
#include <json/reader.h>
#include <string.h>
namespace QuickMedia {
static bool begins_with(const char *str, const char *begin_with) {
return strncmp(str, begin_with, strlen(begin_with)) == 0;
}
SearchResult Youtube::search(const std::string &text, std::vector<std::unique_ptr<BodyItem>> &result_items, Page &next_page) {
next_page = Page::SEARCH_RESULT;
std::string url = "https://youtube.com/results?search_query=";
url += url_param_encode(text);
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, "//h3[class=\"yt-lockup-title\"]/a",
[](QuickMediaHtmlNode *node, void *userdata) {
auto *result_items = (std::vector<std::unique_ptr<BodyItem>>*)userdata;
const char *href = quickmedia_html_node_get_attribute_value(node, "href");
const char *title = quickmedia_html_node_get_attribute_value(node, "title");
// Checking for watch?v helps skipping ads
if(href && title && begins_with(href, "/watch?v=")) {
auto item = std::make_unique<BodyItem>(title);
item->url = std::string("https://www.youtube.com") + href;
result_items->push_back(std::move(item));
}
}, &result_items);
cleanup:
quickmedia_html_search_deinit(&html_search);
return result == 0 ? SearchResult::OK : SearchResult::ERR;
}
static void iterate_suggestion_result(const Json::Value &value, const std::string &search_text, std::vector<std::unique_ptr<BodyItem>> &result_items) {
if(value.isArray()) {
for(const Json::Value &child : value) {
iterate_suggestion_result(child, search_text, result_items);
}
} else if(value.isString()) {
std::string title = value.asString();
if(title != search_text) {
auto item = std::make_unique<BodyItem>(title);
result_items.push_back(std::move(item));
}
}
}
SuggestionResult Youtube::update_search_suggestions(const std::string &text, std::vector<std::unique_ptr<BodyItem>> &result_items) {
result_items.push_back(std::make_unique<BodyItem>(text));
std::string url = "https://clients1.google.com/complete/search?client=youtube&hl=en&gl=us&q=";
url += url_param_encode(text);
std::string server_response;
if(download_to_string(url, server_response) != DownloadResult::OK)
return SuggestionResult::NET_ERR;
size_t json_start = server_response.find_first_of('(');
if(json_start == std::string::npos)
return SuggestionResult::ERR;
++json_start;
size_t json_end = server_response.find_last_of(')');
if(json_end == std::string::npos)
return SuggestionResult::ERR;
if(json_end == 0 || json_start >= json_end)
return SuggestionResult::ERR;
--json_end;
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[json_start], &server_response[json_end], &json_root, &json_errors)) {
fprintf(stderr, "Youtube suggestions json error: %s\n", json_errors.c_str());
return SuggestionResult::ERR;
}
iterate_suggestion_result(json_root, text, result_items);
return SuggestionResult::OK;
}
std::vector<std::unique_ptr<BodyItem>> Youtube::get_related_media(const std::string &url) {
std::vector<std::unique_ptr<BodyItem>> result_items;
std::string website_data;
if(download_to_string(url, website_data) != DownloadResult::OK)
return result_items;
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, "//ul[class=\"video-list\"]//div[class=\"content-wrapper\"]/a",
[](QuickMediaHtmlNode *node, void *userdata) {
auto *result_items = (std::vector<std::unique_ptr<BodyItem>>*)userdata;
const char *href = quickmedia_html_node_get_attribute_value(node, "href");
// TODO: Also add title for related media
if(href && begins_with(href, "/watch?v=")) {
auto item = std::make_unique<BodyItem>("");
item->url = std::string("https://www.youtube.com") + href;
result_items->push_back(std::move(item));
}
}, &result_items);
cleanup:
quickmedia_html_search_deinit(&html_search);
return result_items;
}
}
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