/* FemtoXML_CPP - A c++ wrapper for FemtoXML
 * FemtoXML - An easy to use XML library
 * 
 * See doc/license.txt for license information (GPLv3)
 * 
 * Authors: 
 * 	Fredrik Hultin, noname@ the domain two lines below, 2007
 *
 * http://nurd.se/~noname/femtoxml
 */

/* music.cpp
 *
 * Music collection example for the FemtoXML XML parser using the C++ wrapper.
 * To be used with the provided 'music.xml' (or any other file with the same structure).
 */

#include "document.h"

#include <iostream>
#include <stdexcept>

// Example message handler
void message(fxml_msg* msg, void* data)
{
	std::cout << "Message from FemtoXML: " << msg->typeName << "(" << msg->type << "): " <<  msg->msg << std::endl;
}

int main(int argc, const char* const* argv)
{
	// Create our document
	FemtoXML::Document document;

	// Check so we're given an argument
	if(argc != 2){
		std::cout << "Usage: " << argv[0] << " <music database file (eg. music.xml)>" << std::endl;
		return 1;
	}

	// Start a try statement around parsing
	try{
		// Open our document
		document.load(argv[1]);
	
	
		// This is the code for reading an XML-file with the structure of the provided 'music.xml'.
		
		// If the file doesn't contain any 'collection' elements, die
		if(document.root().count(FXML_TYPE_ELEMENT, "collection") <= 0){
			throw std::runtime_error("The specified file apperas to be valid XML (or plain text), but contains no 'collection'-elements.");
		}

		// Loop through all the collections in the file
		for(int i=0; i < document.root().count("collection"); i++){
			FemtoXML::Element collection = document.root().get("collection", i);
			
			// Checks if the collection has a description and print it if it indeed does
			if(collection.count(FXML_TYPE_ATTRIBUTE, "description") > 0){
				std::cout << "Collection with name: " << collection.get(FXML_TYPE_ATTRIBUTE, "description").get(FXML_TYPE_ATTRIBUTE_VAL, 0).value() << std::endl << std::endl;
			}else{
				std::cout << "Collection with no name" << std::endl << std::endl;
			}

			// Loop through all the albums in the collection
			for(int i2=0; i2 < collection.count("album"); i2++){
				FemtoXML::Element album = collection.get("album", i2);
				std::cout << "Title:\t" << album.get("title").get(0).value() << std::endl;
				std::cout << "Artist:\t" << album.get("artist").get(0).value() << std::endl;
				std::cout << "Year:\t" << album.get("year").get(0).value() << std::endl;

				std::cout << "Track listing:" << std::endl;

				// Loop through all the tracks in the album 
				for(int i3=0; i3 < album.count("track"); i3++){
					FemtoXML::Element track = album.get("track", i3);
					std::cout << "\t" << track.get("number").get(0).value() << ": " << track.get(FXML_TYPE_TEXT, 0).value() << " (" << track.get("length").get(0).value() << ")" << std::endl;
				}
				std::cout << std::endl;
			}
			
		}

	}

	// Catch any runtime_error-exceptions generated by FemtoXML_CPP
	catch(std::runtime_error e){
		// Print what went wrong
		std::cout << e.what() << std::endl;
	}

	return 0;
}