backend: rely on configuration instead of started file to determine if the challenge is launched or not

backend/generation.go

@@ -12,14 +12,6 @@ import (
 	"srs.epita.fr/fic-server/libfic"
 )
 
-// Check if the challenge is started or not
-func isStarted() bool {
-	if _, err := os.Stat(path.Join(SubmissionDir, "started")); os.IsNotExist(err) {
-		return false
-	}
-	return true
-}
-
 // Generate my.json and wait.json for a given team
 func genTeamMyFile(team fic.Team) error {
 	dirPath := path.Join(TeamsDir, fmt.Sprintf("%d", team.Id))
@@ -39,7 +31,7 @@ func genTeamMyFile(team fic.Team) error {
 	}
 
 	// Speed up generation when challenge is started
-	if !isStarted() {
+	if !ChStarted {
 		if my, err := fic.MyJSONTeam(&team, false); err != nil {
 			return err
 		} else if j, err := json.Marshal(my); err != nil {

backend/main.go

@@ -43,6 +43,7 @@ func watchsubdir(watcher *fsnotify.Watcher, pathname string) error {
 	}
 }
 
+var ChStarted = false
 var lastRegeneration time.Time
 var skipInitialGeneration = false
 
@@ -50,6 +51,7 @@ func reloadSettings(config settings.FICSettings) {
 	fic.HintCoefficient = config.HintCurCoefficient
 	fic.WChoiceCoefficient = config.WChoiceCurCoefficient
 	fic.ExerciceCurrentCoefficient = config.ExerciceCurCoefficient
+	ChStarted = time.Since(config.Start) >= 0
 	if lastRegeneration != config.Generation || fic.PartialValidation != config.PartialValidation || fic.FirstBlood != config.FirstBlood || fic.SubmissionCostBase != config.SubmissionCostBase || fic.SubmissionUniqueness != config.SubmissionUniqueness {
 		fic.PartialValidation = config.PartialValidation
 		if config.EnableExerciceDepend {