//go:build wasm
//:build wasm

package localstorage

import "unsafe"

//:wasmimport bridge localstorage_get_item
func wasmGetItem(kPtr *byte, kLen int32, kCap int32, outPtr *int32, outLen *int32)

//:wasmimport bridge localstorage_set_item
func wasmSetItem(kPtr *byte, kLen int32, kCap int32, vPtr *byte, vLen int32, vCap int32)

//:wasmimport bridge localstorage_remove_item
func wasmRemoveItem(kPtr *byte, kLen int32, kCap int32)

func GetItem(key string) (s string) {
	var rPtr, rLen int32
	wasmGetItem(unsafe.StringData(key), int32(len(key)), int32(len(key)), &rPtr, &rLen)
	if rLen <= 0 {
		return ""
	}
	return unsafe.String((*byte)(unsafe.Pointer(uintptr(rPtr))), rLen)
}

func SetItem(key, value string) {
	wasmSetItem(
		unsafe.StringData(key), int32(len(key)), int32(len(key)),
		unsafe.StringData(value), int32(len(value)), int32(len(value)),
	)
}

func RemoveItem(key string) {
	wasmRemoveItem(unsafe.StringData(key), int32(len(key)), int32(len(key)))
}