libfic: add new functions to retrieve the Id of some contents from Title, Label, ...

libfic/flag.go

@@ -4,6 +4,7 @@ import ()
 
 type Flag interface {
 	GetId() int64
+	RecoverId() (Flag, error)
 	Create(e Exercice) (Flag, error)
 	Update() (int64, error)
 	Delete() (int64, error)

libfic/flag_key.go

@@ -127,6 +127,15 @@ func (k FlagKey) GetId() int64 {
 	return k.Id
 }
 
+// RecoverId returns the Flag identifier as register in DB.
+func (k FlagKey) RecoverId() (Flag, error) {
+	if err := DBQueryRow("SELECT id_flag FROM exercice_flags WHERE type LIKE ? AND id_exercice = ?", k.Label, k.IdExercice).Scan(&k.Id); err != nil {
+		return FlagKey{}, err
+	} else {
+		return k, err
+	}
+}
+
 // AddFlagKey creates and fills a new struct Flag, from a hashed flag, and registers it into the database.
 func (k FlagKey) Create(e Exercice) (Flag, error) {
 	// Check the regexp compile

libfic/hint.go

@@ -47,6 +47,17 @@ func GetHint(id int64) (EHint, error) {
 	return h, nil
 }
 
+// GetHintByTitle retrieves the hint with the given id.
+func (e Exercice) GetHintByTitle(id int64) (EHint, error) {
+	var h EHint
+	if err := DBQueryRow("SELECT id_hint, id_exercice, title, content, cost FROM exercice_hints WHERE title = ? AND id_exercice = ?", id, e.Id).Scan(&h.Id, &h.IdExercice, &h.Title, &h.Content, &h.Cost); err != nil {
+		return h, err
+	}
+	treatHintContent(&h)
+
+	return h, nil
+}
+
 // GetHints returns a list of hints comming with the challenge.
 func (e Exercice) GetHints() ([]EHint, error) {
 	if rows, err := DBQuery("SELECT id_hint, title, content, cost FROM exercice_hints WHERE id_exercice = ?", e.Id); err != nil {

libfic/mcq.go

@@ -102,6 +102,15 @@ func (m MCQ) GetId() int64 {
 	return m.Id
 }
 
+// RecoverId returns the MCQ identifier as register in DB.
+func (m MCQ) RecoverId() (Flag, error) {
+	if err := DBQueryRow("SELECT id_mcq FROM exercice_mcq WHERE title LIKE ? AND id_exercice = ?", m.Title, m.IdExercice).Scan(&m.Id); err != nil {
+		return MCQ{}, err
+	} else {
+		return m, err
+	}
+}
+
 // Create registers a MCQ into the database and recursively add its entries.
 func (m MCQ) Create(e Exercice) (Flag, error) {
 	if res, err := DBExec("INSERT INTO exercice_mcq (id_exercice, title) VALUES (?, ?)", e.Id, m.Title); err != nil {