const axsPath = require.resolve('../vendor/axs_testing');

exports.addCommand = function (client, requireName) {
  client.addCommand('auditAccessibility', function (options) {
    return this.execute(
      function (axsPath, requireName, options) {
        options = options || {};
        const ignoreWarnings = options.ignoreWarnings || false;
        const ignoreRules = Array.isArray(options.ignoreRules)
          ? options.ignoreRules
          : [];

        const axs = window[requireName](axsPath);
        const audit = axs.Audit.run(
          new axs.AuditConfiguration({
            showUnsupportedRulesWarning: false
          })
        );

        let failures = audit.filter(function (result) {
          return result.result === 'FAIL';
        });

        if (ignoreWarnings) {
          failures = failures.filter(function (result) {
            return result.rule.severity !== 'Warning';
          });
        }

        failures = failures.filter(function (result) {
          return ignoreRules.indexOf(result.rule.code) === -1;
        });

        if (failures.length > 0) {
          let message = 'Accessibilty audit failed\n\n';
          message += failures
            .map(function (result) {
              return axs.Audit.accessibilityErrorMessage(result);
            })
            .join('\n\n');

          return {
            message: message,
            failed: true,
            results: failures.map(function (result) {
              return {
                code: result.rule.code,
                elements: result.elements.map(function (element) {
                  return axs.utils.getQuerySelectorText(element);
                }),
                message: result.rule.heading,
                severity: result.rule.severity,
                url: result.rule.url
              };
            })
          };
        } else {
          return {
            message: 'Accessibilty audit passed',
            results: [],
            failed: false
          };
        }
      },
      axsPath,
      requireName,
      options
    ).then(function (response) {
      return response;
    });
  });
};