"use strict";

const report = require("../../utils/report");
const ruleMessages = require("../../utils/ruleMessages");
const validateOptions = require("../../utils/validateOptions");

const ruleName = "comment-no-empty";

const messages = ruleMessages(ruleName, {
  rejected: "Unexpected empty comment"
});

const rule = function(actual) {
  return (root, result) => {
    const validOptions = validateOptions(result, ruleName, { actual });
    if (!validOptions) {
      return;
    }

    root.walkComments(comment => {
      // To ignore inline SCSS comments
      if (comment.raws.inline || comment.inline) {
        return;
      }

      // To ignore comments that are not empty
      if (comment.text && comment.text.length !== 0) {
        return;
      }

      report({
        message: messages.rejected,
        node: comment,
        result,
        ruleName
      });
    });
  };
};

rule.ruleName = ruleName;
rule.messages = messages;
module.exports = rule;
