package models

// Code generated by xo. DO NOT EDIT.

import (
	"context"
)

// UserInfo represents a row from 'user_info'.
type UserInfo struct {
	UserID     string `json:"user_id"`     // user_id
	GradeLevel int    `json:"grade_level"` // grade_level
	SkillLevel int    `json:"skill_level"` // skill_level
	// xo fields
	_exists, _deleted bool
}

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

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

// Insert inserts the UserInfo to the database.
func (ui *UserInfo) Insert(ctx context.Context, db DB) error {
	switch {
	case ui._exists: // already exists
		return logerror(&ErrInsertFailed{ErrAlreadyExists})
	case ui._deleted: // deleted
		return logerror(&ErrInsertFailed{ErrMarkedForDeletion})
	}
	// insert (manual)
	const sqlstr = `INSERT INTO user_info (` +
		`user_id, grade_level, skill_level` +
		`) VALUES (` +
		`$1, $2, $3` +
		`)`
	// run
	logf(sqlstr, ui.UserID, ui.GradeLevel, ui.SkillLevel)
	if _, err := db.ExecContext(ctx, sqlstr, ui.UserID, ui.GradeLevel, ui.SkillLevel); err != nil {
		return logerror(err)
	}
	// set exists
	ui._exists = true
	return nil
}

// Update updates a UserInfo in the database.
func (ui *UserInfo) Update(ctx context.Context, db DB) error {
	switch {
	case !ui._exists: // doesn't exist
		return logerror(&ErrUpdateFailed{ErrDoesNotExist})
	case ui._deleted: // deleted
		return logerror(&ErrUpdateFailed{ErrMarkedForDeletion})
	}
	// update with primary key
	const sqlstr = `UPDATE user_info SET ` +
		`grade_level = $1, skill_level = $2 ` +
		`WHERE user_id = $3`
	// run
	logf(sqlstr, ui.GradeLevel, ui.SkillLevel, ui.UserID)
	if _, err := db.ExecContext(ctx, sqlstr, ui.GradeLevel, ui.SkillLevel, ui.UserID); err != nil {
		return logerror(err)
	}
	return nil
}

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

// Upsert performs an upsert for UserInfo.
func (ui *UserInfo) Upsert(ctx context.Context, db DB) error {
	switch {
	case ui._deleted: // deleted
		return logerror(&ErrUpsertFailed{ErrMarkedForDeletion})
	}
	// upsert
	const sqlstr = `INSERT INTO user_info (` +
		`user_id, grade_level, skill_level` +
		`) VALUES (` +
		`$1, $2, $3` +
		`)` +
		` ON CONFLICT (user_id) DO ` +
		`UPDATE SET ` +
		`grade_level = EXCLUDED.grade_level, skill_level = EXCLUDED.skill_level `
	// run
	logf(sqlstr, ui.UserID, ui.GradeLevel, ui.SkillLevel)
	if _, err := db.ExecContext(ctx, sqlstr, ui.UserID, ui.GradeLevel, ui.SkillLevel); err != nil {
		return logerror(err)
	}
	// set exists
	ui._exists = true
	return nil
}

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

// UserInfoByUserID retrieves a row from 'user_info' as a UserInfo.
//
// Generated from index 'sqlite_autoindex_user_info_1'.
func UserInfoByUserID(ctx context.Context, db DB, userID string) (*UserInfo, error) {
	// query
	const sqlstr = `SELECT ` +
		`user_id, grade_level, skill_level ` +
		`FROM user_info ` +
		`WHERE user_id = $1`
	// run
	logf(sqlstr, userID)
	ui := UserInfo{
		_exists: true,
	}
	if err := db.QueryRowContext(ctx, sqlstr, userID).Scan(&ui.UserID, &ui.GradeLevel, &ui.SkillLevel); err != nil {
		return nil, logerror(err)
	}
	return &ui, nil
}

// User returns the User associated with the UserInfo's (UserID).
//
// Generated from foreign key 'user_info_user_id_fkey'.
func (ui *UserInfo) User(ctx context.Context, db DB) (*User, error) {
	return UserByID(ctx, db, ui.UserID)
}