package models

// Code generated by xo. DO NOT EDIT.

import (
	"context"
	"database/sql"
)

// User represents a row from 'users'.
type User struct {
	ID         string        `json:"id"`          // id
	Name       string        `json:"name"`        // name
	Email      string        `json:"email"`       // email
	Picture    string        `json:"picture"`     // picture
	GradeLevel sql.NullInt64 `json:"grade_level"` // grade_level
	Teacher    bool          `json:"teacher"`     // teacher
	Admin      bool          `json:"admin"`       // admin
	CreatedAt  Time          `json:"created_at"`  // created_at
	// xo fields
	_exists, _deleted bool
}

// Exists returns true when the User exists in the database.
func (u *User) Exists() bool {
	return u._exists
}

// Deleted returns true when the User has been marked for deletion from
// the database.
func (u *User) Deleted() bool {
	return u._deleted
}

// Insert inserts the User to the database.
func (u *User) Insert(ctx context.Context, db DB) error {
	switch {
	case u._exists: // already exists
		return logerror(&ErrInsertFailed{ErrAlreadyExists})
	case u._deleted: // deleted
		return logerror(&ErrInsertFailed{ErrMarkedForDeletion})
	}
	// insert (manual)
	const sqlstr = `INSERT INTO users (` +
		`id, name, email, picture, grade_level, teacher, admin, created_at` +
		`) VALUES (` +
		`$1, $2, $3, $4, $5, $6, $7, $8` +
		`)`
	// run
	logf(sqlstr, u.ID, u.Name, u.Email, u.Picture, u.GradeLevel, u.Teacher, u.Admin, u.CreatedAt)
	if _, err := db.ExecContext(ctx, sqlstr, u.ID, u.Name, u.Email, u.Picture, u.GradeLevel, u.Teacher, u.Admin, u.CreatedAt); err != nil {
		return logerror(err)
	}
	// set exists
	u._exists = true
	return nil
}

// Update updates a User in the database.
func (u *User) Update(ctx context.Context, db DB) error {
	switch {
	case !u._exists: // doesn't exist
		return logerror(&ErrUpdateFailed{ErrDoesNotExist})
	case u._deleted: // deleted
		return logerror(&ErrUpdateFailed{ErrMarkedForDeletion})
	}
	// update with primary key
	const sqlstr = `UPDATE users SET ` +
		`name = $1, email = $2, picture = $3, grade_level = $4, teacher = $5, admin = $6, created_at = $7 ` +
		`WHERE id = $8`
	// run
	logf(sqlstr, u.Name, u.Email, u.Picture, u.GradeLevel, u.Teacher, u.Admin, u.CreatedAt, u.ID)
	if _, err := db.ExecContext(ctx, sqlstr, u.Name, u.Email, u.Picture, u.GradeLevel, u.Teacher, u.Admin, u.CreatedAt, u.ID); err != nil {
		return logerror(err)
	}
	return nil
}

// Save saves the User to the database.
func (u *User) Save(ctx context.Context, db DB) error {
	if u.Exists() {
		return u.Update(ctx, db)
	}
	return u.Insert(ctx, db)
}

// Upsert performs an upsert for User.
func (u *User) Upsert(ctx context.Context, db DB) error {
	switch {
	case u._deleted: // deleted
		return logerror(&ErrUpsertFailed{ErrMarkedForDeletion})
	}
	// upsert
	const sqlstr = `INSERT INTO users (` +
		`id, name, email, picture, grade_level, teacher, admin, created_at` +
		`) VALUES (` +
		`$1, $2, $3, $4, $5, $6, $7, $8` +
		`)` +
		` ON CONFLICT (id) DO ` +
		`UPDATE SET ` +
		`name = EXCLUDED.name, email = EXCLUDED.email, picture = EXCLUDED.picture, grade_level = EXCLUDED.grade_level, teacher = EXCLUDED.teacher, admin = EXCLUDED.admin, created_at = EXCLUDED.created_at `
	// run
	logf(sqlstr, u.ID, u.Name, u.Email, u.Picture, u.GradeLevel, u.Teacher, u.Admin, u.CreatedAt)
	if _, err := db.ExecContext(ctx, sqlstr, u.ID, u.Name, u.Email, u.Picture, u.GradeLevel, u.Teacher, u.Admin, u.CreatedAt); err != nil {
		return logerror(err)
	}
	// set exists
	u._exists = true
	return nil
}

// Delete deletes the User from the database.
func (u *User) Delete(ctx context.Context, db DB) error {
	switch {
	case !u._exists: // doesn't exist
		return nil
	case u._deleted: // deleted
		return nil
	}
	// delete with single primary key
	const sqlstr = `DELETE FROM users ` +
		`WHERE id = $1`
	// run
	logf(sqlstr, u.ID)
	if _, err := db.ExecContext(ctx, sqlstr, u.ID); err != nil {
		return logerror(err)
	}
	// set deleted
	u._deleted = true
	return nil
}

// UserByID retrieves a row from 'users' as a User.
//
// Generated from index 'sqlite_autoindex_users_1'.
func UserByID(ctx context.Context, db DB, id string) (*User, error) {
	// query
	const sqlstr = `SELECT ` +
		`id, name, email, picture, grade_level, teacher, admin, created_at ` +
		`FROM users ` +
		`WHERE id = $1`
	// run
	logf(sqlstr, id)
	u := User{
		_exists: true,
	}
	if err := db.QueryRowContext(ctx, sqlstr, id).Scan(&u.ID, &u.Name, &u.Email, &u.Picture, &u.GradeLevel, &u.Teacher, &u.Admin, &u.CreatedAt); err != nil {
		return nil, logerror(err)
	}
	return &u, nil
}

// UserByEmail retrieves a row from 'users' as a User.
//
// Generated from index 'sqlite_autoindex_users_2'.
func UserByEmail(ctx context.Context, db DB, email string) (*User, error) {
	// query
	const sqlstr = `SELECT ` +
		`id, name, email, picture, grade_level, teacher, admin, created_at ` +
		`FROM users ` +
		`WHERE email = $1`
	// run
	logf(sqlstr, email)
	u := User{
		_exists: true,
	}
	if err := db.QueryRowContext(ctx, sqlstr, email).Scan(&u.ID, &u.Name, &u.Email, &u.Picture, &u.GradeLevel, &u.Teacher, &u.Admin, &u.CreatedAt); err != nil {
		return nil, logerror(err)
	}
	return &u, nil
}

// Users runs a custom query, returning results as User.
func Users(ctx context.Context, db DB) ([]*User, error) {
	// query
	const sqlstr = `SELECT u.* FROM users u`
	// run
	logf(sqlstr)
	rows, err := db.QueryContext(ctx, sqlstr)
	if err != nil {
		return nil, logerror(err)
	}
	defer rows.Close()
	// load results
	var res []*User
	for rows.Next() {
		var u User
		// scan
		if err := rows.Scan(&u.ID, &u.Name, &u.Email, &u.Picture, &u.GradeLevel, &u.Teacher, &u.Admin, &u.CreatedAt); err != nil {
			return nil, logerror(err)
		}
		res = append(res, &u)
	}
	if err := rows.Err(); err != nil {
		return nil, logerror(err)
	}
	return res, nil
}

// UserByToken runs a custom query, returning results as User.
func UserByToken(ctx context.Context, db DB, token string) (*User, error) {
	// query
	const sqlstr = `SELECT ` +
		`u.* ` +
		`FROM tokens t ` +
		`JOIN users u ON t.user_id = u.id ` +
		`WHERE t.token = $1`
	// run
	logf(sqlstr, token)
	var u User
	if err := db.QueryRowContext(ctx, sqlstr, token).Scan(&u.ID, &u.Name, &u.Email, &u.Picture, &u.GradeLevel, &u.Teacher, &u.Admin, &u.CreatedAt); err != nil {
		return nil, logerror(err)
	}
	return &u, nil
}