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package models |
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import ( |
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"database/sql" |
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"fmt" |
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"github.com/memnix/memnixrest/pkg/database" |
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"github.com/memnix/memnixrest/pkg/utils" |
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"gorm.io/gorm" |
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"math/rand" |
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"time" |
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) |
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// Card structure |
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type Card struct { |
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gorm.Model `swaggerignore:"true"` |
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Question string `json:"card_question" example:"What's the answer to life ?"` |
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Answer string `json:"card_answer" example:"42"` |
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DeckID uint `json:"deck_id" example:"1"` |
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Deck Deck |
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Type CardType `json:"card_type" example:"0" gorm:"type:Int"` |
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Format string `json:"card_format" example:"Date / Name / Country"` |
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Image string `json:"card_image"` // Should be an url |
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Case bool `json:"card_case" gorm:"default:false"` |
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Spaces bool `json:"card_spaces" gorm:"default:false"` |
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McqID sql.NullInt32 `json:"mcq_id" swaggerignore:"true"` |
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Mcq Mcq |
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} |
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// CardType enum type |
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type CardType int64 |
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const ( |
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CardString CardType = iota |
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CardInt |
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CardMCQ |
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) |
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// NotValidate performs validation of the Card |
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func (card *Card) NotValidate() bool { |
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return len(card.Question) < utils.MinCardQuestionLen || card.Answer == "" || (card.Type == CardMCQ && card.McqID.Int32 == 0) || len( |
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card.Format) > utils.MaxCardFormatLen || len( |
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card.Question) > utils.MaxDefaultLen || len(card.Answer) > utils.MaxDefaultLen || len(card.Image) > utils.MaxImageUrlLen |
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} |
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// ValidateMCQ makes sure that the mcq attached to a card is correct |
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func (card *Card) ValidateMCQ(user *User) (*Mcq, bool) { |
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db := database.DBConn // DB Conn |
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mcq := new(Mcq) |
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if card.McqID.Int32 != 0 { |
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if err := db.First(&mcq, card.McqID).Error; err != nil { |
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log := CreateLog(fmt.Sprintf("Error on CreateNewCard: %s from %s", err.Error(), user.Email), LogQueryGetError).SetType(LogTypeError).AttachIDs(user.ID, card.DeckID, 0) |
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_ = log.SendLog() |
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return nil, false |
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} |
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if mcq.DeckID != card.DeckID { |
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log := CreateLog(fmt.Sprintf("Error on CreateNewCard: card.DeckID != mcq.DeckID from %s", user.Email), LogBadRequest).SetType(LogTypeError).AttachIDs(user.ID, card.DeckID, 0) |
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_ = log.SendLog() |
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return nil, false |
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} |
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if mcq.Type == McqLinked { |
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return mcq, true |
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} |
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} |
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return nil, true |
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} |
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// ToString returns CardType value as a string |
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func (s CardType) ToString() string { |
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switch s { |
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case CardString: |
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return "Card String" |
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case CardInt: |
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return "Card Int" |
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case CardMCQ: |
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return "Card MCQ" |
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default: |
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return "Unknown" |
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} |
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} |
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// GetMCQAnswers returns mcq's answers |
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func (card *Card) GetMCQAnswers() []string { |
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db := database.DBConn // DB Conn |
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var answers []string |
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mcq := new(Mcq) |
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if err := db.First(&mcq, card.McqID).Error; err != nil { |
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return answers |
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} |
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answersList := mcq.GetAnswers() |
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for i := range answersList { |
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if i >= len(answersList) { |
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break |
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} |
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if answersList[i] == card.Answer { |
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answersList[i] = answersList[len(answersList)-1] |
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answersList = answersList[:len(answersList)-1] |
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} |
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} |
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if len(answersList) < 3 { |
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return answers |
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} |
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rand.Seed(time.Now().UnixNano()) |
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rand.Shuffle(len(answersList), func(i, j int) { answersList[i], answersList[j] = answersList[j], answersList[i] }) |
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i, c := 0, 0 |
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for i < 3 { |
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if answersList[c] != card.Answer { |
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answers = append(answers, answersList[c]) |
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i++ |
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} |
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c++ |
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} |
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answers = append(answers, card.Answer) |
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rand.Seed(time.Now().UnixNano()) |
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rand.Shuffle(len(answers), func(i, j int) { answers[i], answers[j] = answers[j], answers[i] }) |
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return answers |
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} |
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memnix /
memnix-rest
