/**
 * Module dependencies
 */

var Schema = require('./waterline-schema/schema');
var ForeignKeys = require('./waterline-schema/foreignKeys');
var JoinTables = require('./waterline-schema/joinTables');
var References = require('./waterline-schema/references');
var Checks = require('./waterline-schema/checks');


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//
// Used to build a Waterline Schema object from a set of loaded collections.
// It should normalize attribute definitions and expand out associations. This
// module is used internally to Waterline and provides no benefits outside of
// it. The expanded properties added to associations are not appropriate for use
// directly inside of your Waterline models.

module.exports = function WaterlineSchema(collections, modelDefaults) {
  var schema = {};

  // Transform Collections into a basic schema
  schema = Schema(collections);

  // Map out and expand foreign keys on the collection schema attributes
  ForeignKeys(schema);

  // Build and map any generated join tables on the collection schema
  JoinTables(schema, modelDefaults);

  // Add References for Has Many Keys
  References(schema);

  // Run any final sanity checks on the schema
  Checks(schema);

  return schema;
};