package models

import "time"

// ReviewMorphName is Review's morph type. Review shares its table with
// AttemptAnswer, so it names itself: two models listed in Models() with the
// same morph type would stop deferred:purge.
const ReviewMorphName = "golem15.quizzes.review"

// Review is an open answer as the admin "Do oceny" screen shows it. It reads
// the same golem15_quizzes_attempt_answers table as AttemptAnswer, which
// keeps its empty Fillable for the API; the admin never writes a column
// through it either. The owner's score and comment are form virtual fields
// that the controller saves through the review service.
type Review struct {
	ID                uint       `gorm:"column:id;primaryKey"`
	AttemptID         uint       `gorm:"column:attempt_id"`
	QuestionID        uint       `gorm:"column:question_id"`
	TextAnswer        *string    `gorm:"column:text_answer"`
	GradingStatus     *string    `gorm:"column:grading_status"`
	GradingSeq        int        `gorm:"column:grading_seq"`
	GradingAttempts   int        `gorm:"column:grading_attempts"`
	Grader            *string    `gorm:"column:grader"`
	GraderPoints      *float64   `gorm:"column:grader_points"`
	GraderFeedback    *string    `gorm:"column:grader_feedback"`
	GradingError      *string    `gorm:"column:grading_error"`
	GradedAt          *time.Time `gorm:"column:graded_at"`
	Points            float64    `gorm:"column:points"`
	IsCorrect         bool       `gorm:"column:is_correct"`
	ReviewComment     *string    `gorm:"column:review_comment"`
	ReviewedAt        *time.Time `gorm:"column:reviewed_at"`
	ReviewedByUserID  *uint      `gorm:"column:reviewed_by_user_id"`
	ReviewedByAdminID *uint      `gorm:"column:reviewed_by_admin_id"`
	CreatedAt         time.Time  `gorm:"column:created_at"`
	UpdatedAt         time.Time  `gorm:"column:updated_at"`

	Question *Question `gorm:"foreignKey:QuestionID"`
	Attempt  *Attempt  `gorm:"foreignKey:AttemptID"`
}

// TableName is the attempt answers table.
func (Review) TableName() string { return "golem15_quizzes_attempt_answers" }

// MorphName keeps Review apart from AttemptAnswer, which owns the table.
func (Review) MorphName() string { return ReviewMorphName }

// Fillable is empty: the admin form saves no column of an answer.
func (Review) Fillable() []string { return []string{} }

// Rules are empty: the controller's FormRules check the virtual fields.
func (Review) Rules() map[string]string { return map[string]string{} }

// ReviewStatus reports the grading status, "" when the row is not an open
// answer.
func (r Review) ReviewStatus() string {
	if r.GradingStatus == nil {
		return ""
	}
	return *r.GradingStatus
}