/**
 * @fileoverview Reject using element.parentNode.removeChild(element) when
 *               element.remove() can be used instead.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

"use strict";

var helpers = require("../helpers");

module.exports = {
  meta: {
    docs: {
      url:
        "https://firefox-source-docs.mozilla.org/code-quality/lint/linters/eslint-plugin-mozilla/avoid-removeChild.html",
    },
    type: "suggestion",
  },

  create(context) {
    return {
      CallExpression(node) {
        let callee = node.callee;
        if (
          callee.type !== "MemberExpression" ||
          callee.property.type !== "Identifier" ||
          callee.property.name != "removeChild" ||
          node.arguments.length != 1
        ) {
          return;
        }

        if (
          callee.object.type == "MemberExpression" &&
          callee.object.property.type == "Identifier" &&
          callee.object.property.name == "parentNode" &&
          helpers.getASTSource(callee.object.object, context) ==
            helpers.getASTSource(node.arguments[0])
        ) {
          context.report(
            node,
            "use element.remove() instead of " +
              "element.parentNode.removeChild(element)"
          );
        }

        if (
          node.arguments[0].type == "MemberExpression" &&
          node.arguments[0].property.type == "Identifier" &&
          node.arguments[0].property.name == "firstChild" &&
          helpers.getASTSource(callee.object, context) ==
            helpers.getASTSource(node.arguments[0].object)
        ) {
          context.report(
            node,
            "use element.firstChild.remove() instead of " +
              "element.removeChild(element.firstChild)"
          );
        }
      },
    };
  },
};