var assert = require('assert');
var _ = require('@sailshq/lodash');
var SchemaBuilder = require('../lib/waterline-schema/schema');

describe('Schema Builder :: ', function() {
  describe('Validating Identity', function() {
    it('should throw an error when a collection is missing an identity', function() {
      var collection = function() {};
      collection.prototype = {
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should be valid when an identity is present', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'FOO',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          }
        }
      };

      assert.doesNotThrow(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should lowercase the identity', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'FOO',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          }
        }
      };

      var schema = SchemaBuilder([collection]);
      assert(schema.foo);
      assert.equal(schema.foo.identity, 'foo');
    });

    it('should allow tableName to suffice for identity', function() {
      var collection = function() {};
      collection.prototype = {
        tableName: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          }
        }
      };

      assert.doesNotThrow(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });
  });


  describe('Validating Primary Key', function() {
    it('should enforce a primary key attribute to be included', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        attributes: {}
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should allow the primary key to be set as a model option', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'bar',
        attributes: {
          bar: {
            type: 'string'
          }
        }
      };

      assert.doesNotThrow(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should NOT allow the primary key to be set as a flag on an attribute', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        attributes: {
          bar: {
            type: 'string'
          },
          baz: {
            type: 'number',
            primaryKey: true
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should NOT allow the primary key to have a defaultsTo value', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'baz',
        attributes: {
          bar: {
            type: 'string'
          },
          baz: {
            type: 'number',
            defaultsTo: 123
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });
  });


  describe('Validating Instance Methods', function() {
    it('should not allow instance methods', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },

          getName: function() {}
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });
  });


  describe('Validating Attribute Properties', function() {
    it('should not allow migration attributes', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number',
            unique: true
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should allow types', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          }
        }
      };

      assert.doesNotThrow(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should validate types', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'integer'
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should add a required flag', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          name: {
            type: 'string'
          }
        }
      };

      assert.doesNotThrow(
        function() {
          SchemaBuilder([collection]);
        }
      );

      var schema = SchemaBuilder([collection]);
      assert.equal(schema.foo.attributes.name.required, false);
    });

    it('should prevent attributes from having a null default value', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          name: {
            type: 'string',
            defaultsTo: null
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should prevent attributes from having a default value and a required flag', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          name: {
            type: 'string',
            defaultsTo: 'foo',
            required: true
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should prevent attributes from having a default value that doesn\'t match its type', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          name: {
            type: 'string',
            defaultsTo: 123
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should allow attributes to have a default value that does match its type', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          name: {
            type: 'number',
            defaultsTo: 123
          }
        }
      };

      assert.doesNotThrow(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should not allow associations to have default values', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          name: {
            model: 'bar',
            defaultsTo: 123
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should not allow singular associations to have a type', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          name: {
            model: 'bar',
            type: 'string'
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should not allow required values to have default values', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          name: {
            type: 'string',
            required: true,
            defaultsTo: 'abc'
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should not allow plural associations to have a required flag', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          name: {
            collection: 'bar',
            required: true
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should not allow plural associations to have a columnName property', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          name: {
            collection: 'bar',
            columnName: 'blah'
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should not allow plural associations to point at themselves', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          name: {
            collection: 'foo',
            via: 'name'
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should not allow both timestamp flags', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          timestamp: {
            type: 'number',
            autoUpdatedAt: true,
            autoCreatedAt: true
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should not allow both an autoUpdatedAt timestamp and a required flag', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          timestamp: {
            type: 'number',
            autoUpdatedAt: true,
            required: true
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should not allow both an autoCreatedAt timestamp and a required flag', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          timestamp: {
            type: 'number',
            autoCreatedAt: true,
            required: true
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should not allow both an autoCreatedAt timestamp and a defaultsTo value', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          timestamp: {
            type: 'number',
            autoCreatedAt: true,
            defaultsTo: 123
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should not allow both an autoUpdatedAt timestamp and a defaultsTo value', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          timestamp: {
            type: 'number',
            autoUpdatedAt: true,
            defaultsTo: 123
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should not allow an autoCreatedAt timestamp to be a json type', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          timestamp: {
            type: 'json',
            autoCreatedAt: true,
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should not allow an autoUpdatedAt timestamp to be a json type', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          timestamp: {
            type: 'json',
            autoUpdatedAt: true,
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should not allow type json attributes to have an allowNull flag set to true', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          data: {
            type: 'json',
            allowNull: true
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should allow type json attributes to have an allowNull flag set to false', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          data: {
            type: 'json',
            allowNull: false
          }
        }
      };

      assert.doesNotThrow(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should not allow type ref attributes to have an allowNull flag set to true', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          data: {
            type: 'ref',
            allowNull: true
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should allow type ref attributes to have an allowNull flag set to false', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          data: {
            type: 'ref',
            allowNull: false
          }
        }
      };

      assert.doesNotThrow(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should allow type string attributes to have an allowNull flag set to true', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          data: {
            type: 'string',
            allowNull: true
          }
        }
      };

      assert.doesNotThrow(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should prevent singular associations from having an allowNull flag set to true', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          data: {
            model: 'foo',
            allowNull: true
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should prevent plural associations from having an allowNull flag set to true', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          data: {
            collection: 'foo',
            allowNull: true
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should prevent the primary key from having an allowNull flag set to true', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number',
            allowNull: true
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should prevent an autoCreatedAt timestamp from having an allowNull flag set to true', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          createdAt: {
            type: 'number',
            autoCreatedAt: true,
            allowNull: true
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should prevent an autoUpdatedAt timestamp from having an allowNull flag set to true', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number',
          },
          updatedAt: {
            type: 'number',
            autoUpdatedAt: true,
            allowNull: true
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should prevent a required attribute from having an allowNull flag set to true', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number',
          },
          importantData: {
            type: 'number',
            required: true,
            allowNull: true
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });

    it('should prevent an attribute with both defaultsTo set to null and an allowNull flag set to true', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number',
          },
          importantData: {
            type: 'number',
            allowNull: true,
            defaultsTo: null
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });
  });


  describe('Validating Attribute Names', function() {
    it('should not allow dots in attribute names', function() {
      var collection = function() {};
      collection.prototype = {
        identity: 'foo',
        primaryKey: 'id',
        attributes: {
          id: {
            type: 'number'
          },
          'name.foo': {
            type: 'number'
          }
        }
      };

      assert.throws(
        function() {
          SchemaBuilder([collection]);
        }
      );
    });
  });

  describe('Validating Dominant Collection Flag', function() {
    it('should error when dominant is used on a via-less association', function() {
      var fixtures = [
        {
          identity: 'user',
          primaryKey: 'id',
          attributes: {
            id: {
              type: 'string',
              columnName: '_id'
            },

            favoritePets: {
              collection: 'pet',
              dominant: true
            }
          }
        },
        {
          identity: 'pet',
          primaryKey: 'id',
          attributes: {
            id: {
              type: 'string',
              columnName: '_id'
            }
          }
        },
      ];

      var collections = _.map(fixtures, function(obj) {
        var collection = function() {};
        collection.prototype = obj;
        return collection;
      });

      assert.throws(
        function() {
          SchemaBuilder(collections);
        }
      );
    });

    it('should error when dominant is used on a non many-to-many association', function() {
      var fixtures = [
        {
          identity: 'user',
          primaryKey: 'id',
          attributes: {
            id: {
              type: 'string',
              columnName: '_id'
            },

            favoritePets: {
              collection: 'pet',
              via: 'owner',
              dominant: true
            }
          }
        },
        {
          identity: 'pet',
          primaryKey: 'id',
          attributes: {
            id: {
              type: 'string',
              columnName: '_id'
            },
            owner: {
              model: 'user'
            }
          }
        },
      ];

      var collections = _.map(fixtures, function(obj) {
        var collection = function() {};
        collection.prototype = obj;
        return collection;
      });

      assert.throws(
        function() {
          SchemaBuilder(collections);
        }
      );
    });

    it('should NOT error when dominant is used on a many-to-many association', function() {
      var fixtures = [
        {
          identity: 'user',
          primaryKey: 'id',
          attributes: {
            id: {
              type: 'string',
              columnName: '_id'
            },

            favoritePets: {
              collection: 'pet',
              via: 'owner',
              dominant: true
            }
          }
        },
        {
          identity: 'pet',
          primaryKey: 'id',
          attributes: {
            id: {
              type: 'string',
              columnName: '_id'
            },
            owners: {
              collection: 'user',
              via: 'favoritePets'
            }
          }
        },
      ];

      var collections = _.map(fixtures, function(obj) {
        var collection = function() {};
        collection.prototype = obj;
        return collection;
      });

      assert.doesNotThrow(
        function() {
          SchemaBuilder(collections);
        }
      );
    });
  });
});