package main

import (
	"github.com/nspcc-dev/neo-go/pkg/interop"
	"github.com/nspcc-dev/neo-go/pkg/interop/storage"
)

func CreateUser(login string, password interop.Hash256) {
	ctx := storage.GetContext()
	storedValue := storage.Get(ctx, login).(interop.Hash256)
	if storedValue != nil {
		panic("This user already exists")
	} else {
		storage.Put(ctx, login, password)
	}
}

func CheckUser(login string, givenPassword interop.Hash256) {
	password := GetUser(login)
	if !password.Equals(givenPassword) {
		panic("Password hashes does not match")
	}
}

func GetUser(login string) interop.Hash256 {
	ctx := storage.GetReadOnlyContext()
	password := storage.Get(ctx, login).(interop.Hash256)
	if password == nil {
		panic("The user does not exist")
	}
	return password
}

func DeleteUser(login string) {
	ctx := storage.GetContext()
	storage.Delete(ctx, login)
}

func UpdateUser(login string, password interop.Hash256) {
	ctx := storage.GetContext()
	storedValue := storage.Get(ctx, login).(interop.Hash256)
	if storedValue == nil {
		panic("This user does not exist")
	} else {
		storage.Put(ctx, login, password)
	}
}