"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = rule;
exports.ruleName = exports.meta = exports.messages = void 0;
var _stylelint = require("stylelint");
var _utils = require("../../utils");
var ruleName = (0, _utils.namespace)("double-slash-comment-empty-line-before");
exports.ruleName = ruleName;
var messages = _stylelint.utils.ruleMessages(ruleName, {
  expected: "Expected empty line before comment",
  rejected: "Unexpected empty line before comment"
});
exports.messages = messages;
var meta = {
  url: (0, _utils.ruleUrl)(ruleName)
};
exports.meta = meta;
var stylelintCommandPrefix = "stylelint-";
function rule(expectation, options, context) {
  return function (root, result) {
    var validOptions = _stylelint.utils.validateOptions(result, ruleName, {
      actual: expectation,
      possible: ["always", "never"]
    }, {
      actual: options,
      possible: {
        except: ["first-nested", "inside-block"],
        ignore: ["stylelint-commands", "between-comments", "inside-block"]
      },
      optional: true
    });
    if (!validOptions) {
      return;
    }
    root.walkComments(function (comment) {
      // Only process // comments
      if (!comment.raws.inline && !comment.inline) {
        return;
      }
      if ((0, _utils.isInlineComment)(comment)) {
        return;
      }

      // Ignore the first node
      if (comment === root.first) {
        return;
      }

      // Optionally ignore stylelint commands
      if (comment.text.indexOf(stylelintCommandPrefix) === 0 && (0, _utils.optionsHaveIgnored)(options, "stylelint-commands")) {
        return;
      }

      // Optionally ignore comments inside blocks
      if (comment.parent !== root && (0, _utils.optionsHaveIgnored)(options, "inside-block")) {
        return;
      }

      // Optionally ignore newlines between comments
      var prev = comment.prev();
      if (prev && prev.type === "comment" && (0, _utils.optionsHaveIgnored)(options, "between-comments")) {
        return;
      }
      var before = comment.raw("before");
      var expectEmptyLineBefore = function () {
        if ((0, _utils.optionsHaveException)(options, "first-nested") && comment.parent !== root && comment === comment.parent.first) {
          return false;
        }

        // Reverse expectation for comments inside blocks
        if (comment.parent !== root && (0, _utils.optionsHaveException)(options, "inside-block")) {
          return expectation === "never";
        }
        return expectation === "always";
      }();
      var hasEmptyLineBefore = before.search(/\n\s*?\n/) !== -1;

      // Return if the expectation is met
      if (expectEmptyLineBefore === hasEmptyLineBefore) {
        return;
      }
      if (context.fix) {
        if (expectEmptyLineBefore && !hasEmptyLineBefore) {
          (0, _utils.addEmptyLineBefore)(comment, context.newline);
          return;
        }
        if (!expectEmptyLineBefore && hasEmptyLineBefore) {
          (0, _utils.removeEmptyLinesBefore)(comment, context.newline);
          return;
        }
      }
      var message = expectEmptyLineBefore ? messages.expected : messages.rejected;
      _stylelint.utils.report({
        message: message,
        node: comment,
        result: result,
        ruleName: ruleName
      });
    });
  };
}
rule.ruleName = ruleName;
rule.messages = messages;
rule.meta = meta;