// This example demonstrates how to use 'dump' method to visualize
// a taskflow graph in DOT format.

#include <taskflow/taskflow.hpp>

int main(){

 tf::Taskflow taskflow("Visualization Demo");
 
 // ------------------------------------------------------
 // Static Tasking
 // ------------------------------------------------------
 auto A = taskflow.emplace([] () { std::cout << "Task A\n"; });
 auto B = taskflow.emplace([] () { std::cout << "Task B\n"; });
 auto C = taskflow.emplace([] () { std::cout << "Task C\n"; });
 auto D = taskflow.emplace([] () { std::cout << "Task D\n"; });
 auto E = taskflow.emplace([] () { std::cout << "Task E\n"; });

 A.precede(B, C, E); 
 C.precede(D);
 B.precede(D, E); 
 
 std::cout << "[dump without name assignment]\n";
 taskflow.dump(std::cout);
 
 std::cout << "[dump with name assignment]\n";
 A.name("A");
 B.name("B");
 C.name("C");
 D.name("D");
 E.name("E");

 // if the graph contains solely static tasks, you can simpley dump them
 // without running the graph
 taskflow.dump(std::cout);
 
 // ------------------------------------------------------
 // Dynamic Tasking
 // ------------------------------------------------------
 taskflow.emplace([](tf::Subflow& sf){
 sf.emplace([](){ std::cout << "subflow task1"; }).name("s1");
 sf.emplace([](){ std::cout << "subflow task2"; }).name("s2");
 sf.emplace([](){ std::cout << "subflow task3"; }).name("s3");
 });
 
 // in order to visualize subflow tasks, you need to run the taskflow
 // to spawn the dynamic tasks first
 tf::Executor executor;
 executor.run(taskflow).wait();

 taskflow.dump(std::cout);
 

 return 0;
}