#include <node.h>
#include <string>
#include <fcntl.h>
#include <sys/types.h>
#include <unistd.h>

#define nodeparam v8::FunctionCallbackInfo<v8::Value>

namespace fileNode {
    void nodeOpen(const nodeparam& args) {
        v8::Isolate* isolate = args.GetIsolate();

        if (args.Length() < 2 || !args[0]->IsString() || !args[1]->IsUint32() || ( args.Length() == 3 && !( args[2]->IsUndefined() || args[2]->IsUint32()))) {
            isolate->ThrowException(v8::Exception::TypeError(
                v8::String::NewFromUtf8(isolate, "Argument 1 must be a path, 2 must be a number").ToLocalChecked()));
            return;
        }

        v8::String::Utf8Value str(isolate, args[0]);
        std::string path(*str);
        int flags = args[1].As<v8::Number>()->Value();

        if(args.Length() == 3 && args[2]->IsUndefined()) {
            mode_t mode = args[2].As<v8::Number>()->Value();
            args.GetReturnValue().Set(open(path.c_str(), flags, mode));
        } else {
            args.GetReturnValue().Set(open(path.c_str(), flags));
        }
    }

    void nodeClose(const nodeparam& args) {
        v8::Isolate* isolate = args.GetIsolate();

        if (args.Length() < 1 || !args[0]->IsUint32()) {
            isolate->ThrowException(v8::Exception::TypeError(
                v8::String::NewFromUtf8(isolate, "Argument 1 must be a file descriptor (number)").ToLocalChecked()));
            return;
        }

        close(args[1].As<v8::Number>()->Value());
    }

    void Initialize(v8::Local<v8::Object> exports) {
        NODE_SET_METHOD(exports, "open", nodeOpen);
        NODE_SET_METHOD(exports, "close", nodeClose);
    }

    NODE_MODULE(file_api, Initialize)
}