package models

// Code generated by xo. DO NOT EDIT.

import (
	"context"
)

// QuestionAttempt represents a row from 'question_attempt'.
type QuestionAttempt struct {
	ID            int    `json:"id"`             // id
	UserID        string `json:"user_id"`        // user_id
	QuestionID    string `json:"question_id"`    // question_id
	QuestionPart  int    `json:"question_part"`  // question_part
	Correct       bool   `json:"correct"`        // correct
	PointsAwarded int    `json:"points_awarded"` // points_awarded
	Answer        string `json:"answer"`         // answer
	Code          string `json:"code"`           // code
	SubmittedAt   Time   `json:"submitted_at"`   // submitted_at
	// xo fields
	_exists, _deleted bool
}

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

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

// Insert inserts the QuestionAttempt to the database.
func (qa *QuestionAttempt) Insert(ctx context.Context, db DB) error {
	switch {
	case qa._exists: // already exists
		return logerror(&ErrInsertFailed{ErrAlreadyExists})
	case qa._deleted: // deleted
		return logerror(&ErrInsertFailed{ErrMarkedForDeletion})
	}
	// insert (primary key generated and returned by database)
	const sqlstr = `INSERT INTO question_attempt (` +
		`user_id, question_id, question_part, correct, points_awarded, answer, code, submitted_at` +
		`) VALUES (` +
		`$1, $2, $3, $4, $5, $6, $7, $8` +
		`)`
	// run
	logf(sqlstr, qa.UserID, qa.QuestionID, qa.QuestionPart, qa.Correct, qa.PointsAwarded, qa.Answer, qa.Code, qa.SubmittedAt)
	res, err := db.ExecContext(ctx, sqlstr, qa.UserID, qa.QuestionID, qa.QuestionPart, qa.Correct, qa.PointsAwarded, qa.Answer, qa.Code, qa.SubmittedAt)
	if err != nil {
		return logerror(err)
	}
	// retrieve id
	id, err := res.LastInsertId()
	if err != nil {
		return logerror(err)
	} // set primary key
	qa.ID = int(id)
	// set exists
	qa._exists = true
	return nil
}

// Update updates a QuestionAttempt in the database.
func (qa *QuestionAttempt) Update(ctx context.Context, db DB) error {
	switch {
	case !qa._exists: // doesn't exist
		return logerror(&ErrUpdateFailed{ErrDoesNotExist})
	case qa._deleted: // deleted
		return logerror(&ErrUpdateFailed{ErrMarkedForDeletion})
	}
	// update with primary key
	const sqlstr = `UPDATE question_attempt SET ` +
		`user_id = $1, question_id = $2, question_part = $3, correct = $4, points_awarded = $5, answer = $6, code = $7, submitted_at = $8 ` +
		`WHERE id = $9`
	// run
	logf(sqlstr, qa.UserID, qa.QuestionID, qa.QuestionPart, qa.Correct, qa.PointsAwarded, qa.Answer, qa.Code, qa.SubmittedAt, qa.ID)
	if _, err := db.ExecContext(ctx, sqlstr, qa.UserID, qa.QuestionID, qa.QuestionPart, qa.Correct, qa.PointsAwarded, qa.Answer, qa.Code, qa.SubmittedAt, qa.ID); err != nil {
		return logerror(err)
	}
	return nil
}

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

// Upsert performs an upsert for QuestionAttempt.
func (qa *QuestionAttempt) Upsert(ctx context.Context, db DB) error {
	switch {
	case qa._deleted: // deleted
		return logerror(&ErrUpsertFailed{ErrMarkedForDeletion})
	}
	// upsert
	const sqlstr = `INSERT INTO question_attempt (` +
		`id, user_id, question_id, question_part, correct, points_awarded, answer, code, submitted_at` +
		`) VALUES (` +
		`$1, $2, $3, $4, $5, $6, $7, $8, $9` +
		`)` +
		` ON CONFLICT (id) DO ` +
		`UPDATE SET ` +
		`user_id = EXCLUDED.user_id, question_id = EXCLUDED.question_id, question_part = EXCLUDED.question_part, correct = EXCLUDED.correct, points_awarded = EXCLUDED.points_awarded, answer = EXCLUDED.answer, code = EXCLUDED.code, submitted_at = EXCLUDED.submitted_at `
	// run
	logf(sqlstr, qa.ID, qa.UserID, qa.QuestionID, qa.QuestionPart, qa.Correct, qa.PointsAwarded, qa.Answer, qa.Code, qa.SubmittedAt)
	if _, err := db.ExecContext(ctx, sqlstr, qa.ID, qa.UserID, qa.QuestionID, qa.QuestionPart, qa.Correct, qa.PointsAwarded, qa.Answer, qa.Code, qa.SubmittedAt); err != nil {
		return logerror(err)
	}
	// set exists
	qa._exists = true
	return nil
}

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

// QuestionAttemptByID retrieves a row from 'question_attempt' as a QuestionAttempt.
//
// Generated from index 'question_attempt_id_pkey'.
func QuestionAttemptByID(ctx context.Context, db DB, id int) (*QuestionAttempt, error) {
	// query
	const sqlstr = `SELECT ` +
		`id, user_id, question_id, question_part, correct, points_awarded, answer, code, submitted_at ` +
		`FROM question_attempt ` +
		`WHERE id = $1`
	// run
	logf(sqlstr, id)
	qa := QuestionAttempt{
		_exists: true,
	}
	if err := db.QueryRowContext(ctx, sqlstr, id).Scan(&qa.ID, &qa.UserID, &qa.QuestionID, &qa.QuestionPart, &qa.Correct, &qa.PointsAwarded, &qa.Answer, &qa.Code, &qa.SubmittedAt); err != nil {
		return nil, logerror(err)
	}
	return &qa, nil
}

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