feed.hpp

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#pragma once
 
#include <pugixml.hpp>
#include <string>
#include <vector>
 
#include "utils.hpp"
#include "feed_type.hpp"
#include "feed_item.hpp"
#include "extraction_param.hpp"
 
using namespace pugi;
 
class Feed {
private:
 
    std::string path;
    xml_document doc;
    xml_node feed_node;
 
    FeedType type{FeedType::INVALID};
 
    std::string title;
    std::string description;
    std::string url;
    std::string last_update;
    std::string img_url;
    std::string rss_url;
 
    std::vector<FeedItem> feed_items{};
 
    bool verify_feed();
 
    xml_node get_feed_node();
 
    void fix_url(std::string &s);
 
    std::string extract_url();
 
    static inline const std::vector<ExtractionParam> __LAST_UPDATE_PARAMS{
        {ExtractionParam::ParamType::CHILD, {"updated"}},
        {ExtractionParam::ParamType::CHILD, {"lastBuildDate"}},
        {ExtractionParam::ParamType::CHILD, {"pubDate"}},
        {ExtractionParam::ParamType::CHILD, {"dc:date"}}
    };
    std::string extract_last_update();
 
    static inline const std::vector<ExtractionParam> __IMG_URL_PARAMS{
        {ExtractionParam::ParamType::CHILD, {"icon"}},
        {ExtractionParam::ParamType::CHILD, {"image", "url"}},
        {ExtractionParam::ParamType::CHILD, {"image"}},
        {ExtractionParam::ParamType::CHILD, {"logo"}},
        {ExtractionParam::ParamType::ATTRIBUTE, {"itunes:image"}, "href"}
    };
    std::string extract_img_url();
 
    std::string extract_rss_url();
 
    static inline const std::vector<ExtractionParam> __DESCRIPTION_PARAMS{
        {ExtractionParam::ParamType::CHILD, {"description"}},
        {ExtractionParam::ParamType::CHILD, {"subtitle"}}
    };
    void extract_feed_data();
 
    void extract_feed_items();
 
    void parse();
 
public:
 
    Feed(std::string path) : path{path} {
        parse();
    }
 
    std::string get_title() { return title; }
    std::string get_description() { return description; }
    std::string get_url() { return url; }
    std::string get_last_update() { return last_update; }
    std::string get_img_url() { return img_url; }
    std::string get_rss_url() { return rss_url; }
 
    std::vector<FeedItem> get_items() { return feed_items; }
 
    std::string to_json(bool no_items=false);
};