#include "Director.h"

namespace NVL::Director {
	Director::Director(const Compiler::NVLGraph& g) : 
		g(g), current_position(0), active(true), description(g.nodes[0].description), current_node(g.nodes[0]) {
		for (const String& s : g.static_refs)
			resolve.push_back(Environment::ENVIRONMENT.get(s));
	}
	Environment::Variable Director::CollectVariable(const Environment::Variable& v) {
		if (v.type == Environment::Type::StaticReference)
			return this->resolve[static_cast<u16>(std::get<Number>(v.value))];
		else if (v.type == Environment::Type::Array) {
			Vector<Environment::Variable> a{};
			for (const auto& x : std::get<Vector<Environment::Variable>>(v.value))
				a.push_back(CollectVariable(x));
			return Environment::Variable(a);
		}
		else
			return v;
	}
	void Director::Advance() {
		if (current_position >= current_node.sequence.size()) {
			this->active = false;
			return;
		}
		const auto& cmd = this->current_node.sequence[current_position];
		Vector<Environment::Variable> args{};
		for (u32 i = 1; i < cmd.size(); i++) {
			args.push_back(CollectVariable(cmd[i]));
		}
		std::get<std::function<Environment::Variable(Vector<Environment::Variable>)>>(CollectVariable(cmd[0]).value)(args);
		this->current_position++;
	}
	void Director::GetBacklog() {
	
	}
	void Director::Save() {
	
	}
	void Director::Load() {
	
	}
	void Director::Jump() {
	
	}
}