package main

import (
	"git.wecise.com/wecise/common/lib/robertkrimen/otto"
	"log"
	"reflect"
)

type ottoDemo struct {

}

func (demo *ottoDemo) resetVM(vm *otto.Otto) {
	// Reset vm custom properties
	value, _ := vm.Get("_defaultProperties_")
	if value.IsUndefined() {
		propertySet := make(map[string]bool)
		vm.GlobalForEach(func(name string) bool {
			propertySet[name] = true
			return true
		})
		propertySet["_defaultProperties_"] = true
		_ = vm.Set("_defaultProperties_", propertySet)
	} else {
		pv, _ := value.Export()
		propertySet := pv.(map[string]bool)
		vm.GlobalForEach(func(name string) bool {
			if _, ok := propertySet[name]; !ok {
				vm.Delete(name)
			}
			return true
		})
	}
}

func main() {
	log.SetFlags(log.LstdFlags | log.Lshortfile)
	demo := new(ottoDemo)

	vm := otto.New()

	// Custom js function
	logLib, _ := vm.Object(`log = {}`)
	_ = logLib.Set("info", func(call otto.FunctionCall) otto.Value {
		var v otto.Value
		v1 := call.Argument(0)
		if !v1.IsString() {
			panic(call.Otto.MakeCustomError("GoError:" + call.CallerLocation(), " incorrect parameter data type, should be: message<string>"))
		}
		msg, _ := v1.ToString()
		log.Println(msg)
		return v
	})
	_ = vm.Set("log", logLib)

	demo.resetVM(vm)

	_ = vm.Set("xyz", map[string]bool{"x":false, "y":false, "z":false})

	_, err := vm.Run(`
    abc = 2 + 2;
	console.log(xyz);
    console.log("The value of abc is " + abc); // 4
	log.info("Hello otto!");
`)
	if err != nil {
		log.Fatal(err)
	}
	v, _ := vm.Get("abc")
	log.Println(v.ToInteger())

	v2, _ := vm.Get("xyz")
	ottoVal, _ := v2.Export()
	log.Println(reflect.TypeOf(ottoVal))

	demo.resetVM(vm)
	_, err = vm.Run(`log.info("Hello otto agin");console.log(abc);`)
	if err != nil {
		log.Fatal(err)
	}
	log.Println("exit")
}