'use strict';

module.exports.create = function (opts) {
  // opts = { filepath };
  var engine = { db: null };

  var db = require(opts.filepath);

  engine.primaryNameservers = db.primaryNameservers;
  engine.zones = {
    all: function (cb) {
      process.nextTick(function () {
        cb(null, db.domains.slice(0));
      });
    }
  , get: function (query, cb) {
      var myDomains = db.domains.filter(function (d) {
        return -1 !== query.names.indexOf(d.id.toLowerCase());
      });
      process.nextTick(function () {
        cb(null, myDomains);
      });
    }
  };
  engine.records = {
    all: function (cb) {
      process.nextTick(function () {
        cb(null, db.records.slice(0));
      });
    }
  , get: function (query, cb) {
      var myRecords = db.records.slice(0).filter(function (r) {

        if ('string' !== typeof r.name) {
          return false;
        }

        // TODO use IN in masterquest (or implement OR)
        // Only return single-level wildcard?
        if (query.name === r.name || ('*.' + query.name.split('.').slice(1).join('.')) === r.name) {
          return true;
        }
      });
      process.nextTick(function () {
        cb(null, myRecords);
      });
    }
  };
  engine.getSoas = engine.zones.get;
  engine.getRecords = engine.records.get;

  return engine;
};