// Copyright 2019-present Facebook Inc. All rights reserved.
// This source code is licensed under the Apache 2.0 license found
// in the LICENSE file in the root directory of this source tree.

// Code generated by ent, DO NOT EDIT.

package friendship

import (
	"time"

	"entgo.io/ent/dialect/sql"
	"entgo.io/ent/dialect/sql/sqlgraph"
)

const (
	// Label holds the string label denoting the friendship type in the database.
	Label = "friendship"
	// FieldID holds the string denoting the id field in the database.
	FieldID = "id"
	// FieldWeight holds the string denoting the weight field in the database.
	FieldWeight = "weight"
	// FieldCreatedAt holds the string denoting the created_at field in the database.
	FieldCreatedAt = "created_at"
	// FieldUserID holds the string denoting the user_id field in the database.
	FieldUserID = "user_id"
	// FieldFriendID holds the string denoting the friend_id field in the database.
	FieldFriendID = "friend_id"
	// EdgeUser holds the string denoting the user edge name in mutations.
	EdgeUser = "user"
	// EdgeFriend holds the string denoting the friend edge name in mutations.
	EdgeFriend = "friend"
	// Table holds the table name of the friendship in the database.
	Table = "friendships"
	// UserTable is the table that holds the user relation/edge.
	UserTable = "friendships"
	// UserInverseTable is the table name for the User entity.
	// It exists in this package in order to avoid circular dependency with the "user" package.
	UserInverseTable = "users"
	// UserColumn is the table column denoting the user relation/edge.
	UserColumn = "user_id"
	// FriendTable is the table that holds the friend relation/edge.
	FriendTable = "friendships"
	// FriendInverseTable is the table name for the User entity.
	// It exists in this package in order to avoid circular dependency with the "user" package.
	FriendInverseTable = "users"
	// FriendColumn is the table column denoting the friend relation/edge.
	FriendColumn = "friend_id"
)

// Columns holds all SQL columns for friendship fields.
var Columns = []string{
	FieldID,
	FieldWeight,
	FieldCreatedAt,
	FieldUserID,
	FieldFriendID,
}

// ValidColumn reports if the column name is valid (part of the table columns).
func ValidColumn(column string) bool {
	for i := range Columns {
		if column == Columns[i] {
			return true
		}
	}
	return false
}

var (
	// DefaultWeight holds the default value on creation for the "weight" field.
	DefaultWeight int
	// DefaultCreatedAt holds the default value on creation for the "created_at" field.
	DefaultCreatedAt func() time.Time
)

// OrderOption defines the ordering options for the Friendship queries.
type OrderOption func(*sql.Selector)

// ByID orders the results by the id field.
func ByID(opts ...sql.OrderTermOption) OrderOption {
	return sql.OrderByField(FieldID, opts...).ToFunc()
}

// ByWeight orders the results by the weight field.
func ByWeight(opts ...sql.OrderTermOption) OrderOption {
	return sql.OrderByField(FieldWeight, opts...).ToFunc()
}

// ByCreatedAt orders the results by the created_at field.
func ByCreatedAt(opts ...sql.OrderTermOption) OrderOption {
	return sql.OrderByField(FieldCreatedAt, opts...).ToFunc()
}

// ByUserID orders the results by the user_id field.
func ByUserID(opts ...sql.OrderTermOption) OrderOption {
	return sql.OrderByField(FieldUserID, opts...).ToFunc()
}

// ByFriendID orders the results by the friend_id field.
func ByFriendID(opts ...sql.OrderTermOption) OrderOption {
	return sql.OrderByField(FieldFriendID, opts...).ToFunc()
}

// ByUserField orders the results by user field.
func ByUserField(field string, opts ...sql.OrderTermOption) OrderOption {
	return func(s *sql.Selector) {
		sqlgraph.OrderByNeighborTerms(s, newUserStep(), sql.OrderByField(field, opts...))
	}
}

// ByFriendField orders the results by friend field.
func ByFriendField(field string, opts ...sql.OrderTermOption) OrderOption {
	return func(s *sql.Selector) {
		sqlgraph.OrderByNeighborTerms(s, newFriendStep(), sql.OrderByField(field, opts...))
	}
}
func newUserStep() *sqlgraph.Step {
	return sqlgraph.NewStep(
		sqlgraph.From(Table, FieldID),
		sqlgraph.To(UserInverseTable, FieldID),
		sqlgraph.Edge(sqlgraph.M2O, false, UserTable, UserColumn),
	)
}
func newFriendStep() *sqlgraph.Step {
	return sqlgraph.NewStep(
		sqlgraph.From(Table, FieldID),
		sqlgraph.To(FriendInverseTable, FieldID),
		sqlgraph.Edge(sqlgraph.M2O, false, FriendTable, FriendColumn),
	)
}