//  Inspired by https:// github.com/Inndy/vue-clipboard2
const Clipboard = require("clipboard");
if (!Clipboard) {
  throw new Error("you should npm install `clipboard` --save at first ");
}

export default {
  bind(el, binding) {
    if (binding.arg === "success") {
      el._v_clipboard_success = binding.value;
    } else if (binding.arg === "error") {
      el._v_clipboard_error = binding.value;
    } else {
      const clipboard = new Clipboard(el, {
        text() { return binding.value; },
        action() { return binding.arg === "cut" ? "cut" : "copy"; }
      });
      clipboard.on("success", e => {
        const callback = el._v_clipboard_success;
        callback && callback(e) //  eslint-disable-line
      });
      clipboard.on("error", e => {
        const callback = el._v_clipboard_error;
        callback && callback(e) //  eslint-disable-line
      });
      el._v_clipboard = clipboard;
    }
  },
  update(el, binding) {
    if (binding.arg === "success") {
      el._v_clipboard_success = binding.value;
    } else if (binding.arg === "error") {
      el._v_clipboard_error = binding.value;
    } else {
      el._v_clipboard.text = function() { return binding.value; };
      el._v_clipboard.action = function() { return binding.arg === "cut" ? "cut" : "copy"; };
    }
  },
  unbind(el, binding) {
    if (binding.arg === "success") {
      delete el._v_clipboard_success;
    } else if (binding.arg === "error") {
      delete el._v_clipboard_error;
    } else {
      el._v_clipboard.destroy();
      delete el._v_clipboard;
    }
  }
};