admin: Retrieve stats on exercices

libfic/flag_key.go

@@ -230,6 +230,31 @@ func (k *FlagKey) RecoverId() (Flag, error) {
 	}
 }
 
+// NbTries returns the flag resolution statistics.
+func (k *FlagKey) NbTries() (tries int64, err error) {
+	err = DBQueryRow("SELECT COUNT(*) AS tries FROM exercice_tries_flags WHERE id_flag = ?", k.Id).Scan(&tries)
+	return
+}
+
+func (k *FlagKey) TeamsOnIt() ([]int64, error) {
+	if rows, err := DBQuery("SELECT DISTINCT M.id_team FROM exercice_tries_flags F INNER JOIN exercice_tries T ON T.id_try = F.id_try INNER JOIN teams M ON M.id_team = T.id_team WHERE id_flag = ?", k.Id); err != nil {
+		return nil, err
+	} else {
+		defer rows.Close()
+
+		teams := []int64{}
+		for rows.Next() {
+			var idteam int64
+			if err := rows.Scan(&idteam); err != nil {
+				return nil, err
+			}
+			teams = append(teams, idteam)
+		}
+
+		return teams, nil
+	}
+}
+
 // 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