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#include "graph.h"
using namespace Rotor;
using namespace std;
bool Graph::check_audio(string audio,string path){
if (audio!="") {
audio_filename=path+audio;
Poco::File f=Poco::File(audio_filename);
if (f.exists()) {
//here we should check the audio is actually valid
audio_loaded=true;
cerr<<"Rotor: loading "<<audio_filename<<" from graph"<<endl;
return true;
}
cerr<<"Rotor: audio file "<<audio_filename<<" not found"<<endl;
}
return false;
}
bool Graph::load_file(std::string filename,std::string media_path){
Poco::File f=Poco::File(filename);
if (f.exists()) {
Poco::FileInputStream fis(filename);
Poco::CountingInputStream countingIstr(fis);
std::string str;
Poco::StreamCopier::copyToString(countingIstr, str);
return parse_json(str,media_path);
}
cerr<<"Rotor: graph "<<filename<<" not found"<<endl;
return false;
}
Node* Graph::find_node(const string &type){
for (std::unordered_map<string,Node*>::iterator it=nodes.begin();it!=nodes.end();++it) {
if (it->second->get_type()==type) return it->second;
}
return nullptr;
};
bool Graph::parse_json(string &data,string &media_path){
Json::Value root; // will contain the root value after parsing.
Json::Reader reader;
bool parsing_successful = reader.parse( data, root );
if ( !parsing_successful )
{
std::cout << "Failed to parse configuration\n"
<< reader.getFormattedErrorMessages();
return false;
}
//The json validates, now we should attempt to retain nodes which haven't changed
//for now just clear the existing graph
clear();
Node_factory factory;
check_audio(root["audio"].asString(),media_path);
init(root["id"].asString());
Json::Value jnodes = root["nodes"];
for ( uint32_t i = 0; i < jnodes.size(); ++i ) {
string node_id=jnodes[i]["id"].asString();
Node* node=factory.create(jnodes[i]);
if (node) {
if (nodes.find(node_id)==nodes.end()){
cerr << "Rotor: creating node '"<<node_id<<"': '"<<jnodes[i]["type"].asString()<< "'" << endl;
//kind of have to do the links from outside thus
//how do deal with variable arrays?
//
//on our left.. an array of pointers to variables..
//some of which contain arrays of pointers to variables
//
//on our right.. an unordered map of nodes to be linked to
//
//node.create_links(nodes)
//will allow the nodes to be passed into each member of a variable array
node->create_connections(nodes);
nodes[node_id]=node;
}
else cerr << "ERROR: duplicate node '"<<node_id<<"' "<< endl;
}
else {
cerr << "ERROR: graph loader cannot find node '" <<jnodes[i]["type"].asString()<< "'" << endl;
return false;
}
}
return true;
}
//should nodes be identified by uuid rather than name?
//array inlets can be identified by number as this is all they usually are
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