ent/entc/integration/hooks/ent/client.go

// Copyright (c) Facebook, Inc. and its affiliates. 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 entc, DO NOT EDIT.

package ent

import (
	"context"
	"fmt"
	"log"

	"github.com/facebookincubator/ent/entc/integration/hooks/ent/migrate"

	"github.com/facebookincubator/ent/entc/integration/hooks/ent/card"
	"github.com/facebookincubator/ent/entc/integration/hooks/ent/user"

	"github.com/facebookincubator/ent/dialect"
	"github.com/facebookincubator/ent/dialect/sql"
	"github.com/facebookincubator/ent/dialect/sql/sqlgraph"
)

// Client is the client that holds all ent builders.
type Client struct {
	config
	// Schema is the client for creating, migrating and dropping schema.
	Schema *migrate.Schema
	// Card is the client for interacting with the Card builders.
	Card *CardClient
	// User is the client for interacting with the User builders.
	User *UserClient
}

// NewClient creates a new client configured with the given options.
func NewClient(opts ...Option) *Client {
	cfg := config{log: log.Println, hooks: &hooks{}}
	cfg.options(opts...)
	client := &Client{config: cfg}
	client.init()
	return client
}

func (c *Client) init() {
	c.Schema = migrate.NewSchema(c.driver)
	c.Card = NewCardClient(c.config)
	c.User = NewUserClient(c.config)
}

// Open opens a connection to the database specified by the driver name and a
// driver-specific data source name, and returns a new client attached to it.
// Optional parameters can be added for configuring the client.
func Open(driverName, dataSourceName string, options ...Option) (*Client, error) {
	switch driverName {
	case dialect.MySQL, dialect.Postgres, dialect.SQLite:
		drv, err := sql.Open(driverName, dataSourceName)
		if err != nil {
			return nil, err
		}
		return NewClient(append(options, Driver(drv))...), nil
	default:
		return nil, fmt.Errorf("unsupported driver: %q", driverName)
	}
}

// Tx returns a new transactional client.
func (c *Client) Tx(ctx context.Context) (*Tx, error) {
	if _, ok := c.driver.(*txDriver); ok {
		return nil, fmt.Errorf("ent: cannot start a transaction within a transaction")
	}
	tx, err := newTx(ctx, c.driver)
	if err != nil {
		return nil, fmt.Errorf("ent: starting a transaction: %v", err)
	}
	cfg := config{driver: tx, log: c.log, debug: c.debug, hooks: c.hooks}
	return &Tx{
		config: cfg,
		Card:   NewCardClient(cfg),
		User:   NewUserClient(cfg),
	}, nil
}

// BeginTx returns a transactional client with options.
func (c *Client) BeginTx(ctx context.Context, opts *sql.TxOptions) (*Tx, error) {
	if _, ok := c.driver.(*txDriver); ok {
		return nil, fmt.Errorf("ent: cannot start a transaction within a transaction")
	}
	tx, err := c.driver.(*sql.Driver).BeginTx(ctx, opts)
	if err != nil {
		return nil, fmt.Errorf("ent: starting a transaction: %v", err)
	}
	cfg := config{driver: &txDriver{tx: tx, drv: c.driver}, log: c.log, debug: c.debug, hooks: c.hooks}
	return &Tx{
		config: cfg,
		Card:   NewCardClient(cfg),
		User:   NewUserClient(cfg),
	}, nil
}

// Debug returns a new debug-client. It's used to get verbose logging on specific operations.
//
//	client.Debug().
//		Card.
//		Query().
//		Count(ctx)
//
func (c *Client) Debug() *Client {
	if c.debug {
		return c
	}
	cfg := config{driver: dialect.Debug(c.driver, c.log), log: c.log, debug: true, hooks: c.hooks}
	client := &Client{config: cfg}
	client.init()
	return client
}

// Close closes the database connection and prevents new queries from starting.
func (c *Client) Close() error {
	return c.driver.Close()
}

// Use adds the mutation hooks to all the entity clients.
// In order to add hooks to a specific client, call: `client.Node.Use(...)`.
func (c *Client) Use(hooks ...Hook) {
	c.Card.Use(hooks...)
	c.User.Use(hooks...)
}

// CardClient is a client for the Card schema.
type CardClient struct {
	config
}

// NewCardClient returns a client for the Card from the given config.
func NewCardClient(c config) *CardClient {
	return &CardClient{config: c}
}

// Use adds a list of mutation hooks to the hooks stack.
// A call to `Use(f, g, h)` equals to `card.Hooks(f(g(h())))`.
func (c *CardClient) Use(hooks ...Hook) {
	c.hooks.Card = append(c.hooks.Card, hooks...)
}

// Create returns a create builder for Card.
func (c *CardClient) Create() *CardCreate {
	mutation := newCardMutation(c.config, OpCreate)
	return &CardCreate{config: c.config, hooks: c.Hooks(), mutation: mutation}
}

// Update returns an update builder for Card.
func (c *CardClient) Update() *CardUpdate {
	mutation := newCardMutation(c.config, OpUpdate)
	return &CardUpdate{config: c.config, hooks: c.Hooks(), mutation: mutation}
}

// UpdateOne returns an update builder for the given entity.
func (c *CardClient) UpdateOne(ca *Card) *CardUpdateOne {
	return c.UpdateOneID(ca.ID)
}

// UpdateOneID returns an update builder for the given id.
func (c *CardClient) UpdateOneID(id int) *CardUpdateOne {
	mutation := newCardMutation(c.config, OpUpdateOne)
	mutation.id = &id
	return &CardUpdateOne{config: c.config, hooks: c.Hooks(), mutation: mutation}
}

// Delete returns a delete builder for Card.
func (c *CardClient) Delete() *CardDelete {
	mutation := newCardMutation(c.config, OpDelete)
	return &CardDelete{config: c.config, hooks: c.Hooks(), mutation: mutation}
}

// DeleteOne returns a delete builder for the given entity.
func (c *CardClient) DeleteOne(ca *Card) *CardDeleteOne {
	return c.DeleteOneID(ca.ID)
}

// DeleteOneID returns a delete builder for the given id.
func (c *CardClient) DeleteOneID(id int) *CardDeleteOne {
	builder := c.Delete().Where(card.ID(id))
	builder.mutation.id = &id
	builder.mutation.op = OpDeleteOne
	return &CardDeleteOne{builder}
}

// Create returns a query builder for Card.
func (c *CardClient) Query() *CardQuery {
	return &CardQuery{config: c.config}
}

// Get returns a Card entity by its id.
func (c *CardClient) Get(ctx context.Context, id int) (*Card, error) {
	return c.Query().Where(card.ID(id)).Only(ctx)
}

// GetX is like Get, but panics if an error occurs.
func (c *CardClient) GetX(ctx context.Context, id int) *Card {
	ca, err := c.Get(ctx, id)
	if err != nil {
		panic(err)
	}
	return ca
}

// QueryOwner queries the owner edge of a Card.
func (c *CardClient) QueryOwner(ca *Card) *UserQuery {
	query := &UserQuery{config: c.config}
	query.path = func(ctx context.Context) (fromV *sql.Selector, _ error) {
		id := ca.ID
		step := sqlgraph.NewStep(
			sqlgraph.From(card.Table, card.FieldID, id),
			sqlgraph.To(user.Table, user.FieldID),
			sqlgraph.Edge(sqlgraph.M2O, true, card.OwnerTable, card.OwnerColumn),
		)
		fromV = sqlgraph.Neighbors(ca.driver.Dialect(), step)
		return fromV, nil
	}
	return query
}

// Hooks returns the client hooks.
func (c *CardClient) Hooks() []Hook {
	hooks := c.hooks.Card
	return append(hooks[:len(hooks):len(hooks)], card.Hooks[:]...)
}

// UserClient is a client for the User schema.
type UserClient struct {
	config
}

// NewUserClient returns a client for the User from the given config.
func NewUserClient(c config) *UserClient {
	return &UserClient{config: c}
}

// Use adds a list of mutation hooks to the hooks stack.
// A call to `Use(f, g, h)` equals to `user.Hooks(f(g(h())))`.
func (c *UserClient) Use(hooks ...Hook) {
	c.hooks.User = append(c.hooks.User, hooks...)
}

// Create returns a create builder for User.
func (c *UserClient) Create() *UserCreate {
	mutation := newUserMutation(c.config, OpCreate)
	return &UserCreate{config: c.config, hooks: c.Hooks(), mutation: mutation}
}

// Update returns an update builder for User.
func (c *UserClient) Update() *UserUpdate {
	mutation := newUserMutation(c.config, OpUpdate)
	return &UserUpdate{config: c.config, hooks: c.Hooks(), mutation: mutation}
}

// UpdateOne returns an update builder for the given entity.
func (c *UserClient) UpdateOne(u *User) *UserUpdateOne {
	return c.UpdateOneID(u.ID)
}

// UpdateOneID returns an update builder for the given id.
func (c *UserClient) UpdateOneID(id int) *UserUpdateOne {
	mutation := newUserMutation(c.config, OpUpdateOne)
	mutation.id = &id
	return &UserUpdateOne{config: c.config, hooks: c.Hooks(), mutation: mutation}
}

// Delete returns a delete builder for User.
func (c *UserClient) Delete() *UserDelete {
	mutation := newUserMutation(c.config, OpDelete)
	return &UserDelete{config: c.config, hooks: c.Hooks(), mutation: mutation}
}

// DeleteOne returns a delete builder for the given entity.
func (c *UserClient) DeleteOne(u *User) *UserDeleteOne {
	return c.DeleteOneID(u.ID)
}

// DeleteOneID returns a delete builder for the given id.
func (c *UserClient) DeleteOneID(id int) *UserDeleteOne {
	builder := c.Delete().Where(user.ID(id))
	builder.mutation.id = &id
	builder.mutation.op = OpDeleteOne
	return &UserDeleteOne{builder}
}

// Create returns a query builder for User.
func (c *UserClient) Query() *UserQuery {
	return &UserQuery{config: c.config}
}

// Get returns a User entity by its id.
func (c *UserClient) Get(ctx context.Context, id int) (*User, error) {
	return c.Query().Where(user.ID(id)).Only(ctx)
}

// GetX is like Get, but panics if an error occurs.
func (c *UserClient) GetX(ctx context.Context, id int) *User {
	u, err := c.Get(ctx, id)
	if err != nil {
		panic(err)
	}
	return u
}

// QueryCards queries the cards edge of a User.
func (c *UserClient) QueryCards(u *User) *CardQuery {
	query := &CardQuery{config: c.config}
	query.path = func(ctx context.Context) (fromV *sql.Selector, _ error) {
		id := u.ID
		step := sqlgraph.NewStep(
			sqlgraph.From(user.Table, user.FieldID, id),
			sqlgraph.To(card.Table, card.FieldID),
			sqlgraph.Edge(sqlgraph.O2M, false, user.CardsTable, user.CardsColumn),
		)
		fromV = sqlgraph.Neighbors(u.driver.Dialect(), step)
		return fromV, nil
	}
	return query
}

// QueryFriends queries the friends edge of a User.
func (c *UserClient) QueryFriends(u *User) *UserQuery {
	query := &UserQuery{config: c.config}
	query.path = func(ctx context.Context) (fromV *sql.Selector, _ error) {
		id := u.ID
		step := sqlgraph.NewStep(
			sqlgraph.From(user.Table, user.FieldID, id),
			sqlgraph.To(user.Table, user.FieldID),
			sqlgraph.Edge(sqlgraph.M2M, false, user.FriendsTable, user.FriendsPrimaryKey...),
		)
		fromV = sqlgraph.Neighbors(u.driver.Dialect(), step)
		return fromV, nil
	}
	return query
}

// QueryBestFriend queries the best_friend edge of a User.
func (c *UserClient) QueryBestFriend(u *User) *UserQuery {
	query := &UserQuery{config: c.config}
	query.path = func(ctx context.Context) (fromV *sql.Selector, _ error) {
		id := u.ID
		step := sqlgraph.NewStep(
			sqlgraph.From(user.Table, user.FieldID, id),
			sqlgraph.To(user.Table, user.FieldID),
			sqlgraph.Edge(sqlgraph.O2O, false, user.BestFriendTable, user.BestFriendColumn),
		)
		fromV = sqlgraph.Neighbors(u.driver.Dialect(), step)
		return fromV, nil
	}
	return query
}

// Hooks returns the client hooks.
func (c *UserClient) Hooks() []Hook {
	return c.hooks.User
}