sync: randomize imports: themes order, MCQ and UCQ choices

admin/sync/exercice_defines.go

@@ -44,8 +44,9 @@ type ExerciceFlagMCQChoice struct {
 
 // ExerciceFlagMCQ holds information about a MCQ flag.
 type ExerciceFlagMCQ struct {
-	Label  string `toml:",omitempty"`
+	Label     string `toml:",omitempty"`
-	Choice []ExerciceFlagMCQChoice
+	Choice    []ExerciceFlagMCQChoice
+	NoShuffle bool
 }
 
 // ExerciceFlagUCQChoice holds a choice for an UCQ flag.
@@ -65,6 +66,7 @@ type ExerciceFlagUCQ struct {
 	Choices_Cost int64  `toml:",omitempty"`
 	Choice       []ExerciceFlagUCQChoice
 	LockedFile   []ExerciceUnlockFile `toml:"unlock_file,omitempty"`
+	NoShuffle    bool
 }
 
 // ExerciceParams contains values parsed from defines.txt.

admin/sync/exercice_keys.go

@@ -2,6 +2,7 @@ package sync
 
 import (
 	"fmt"
+	"math/rand"
 	"path"
 	"unicode"
 
@@ -93,6 +94,13 @@ func SyncExerciceFlags(i Importer, exercice fic.Exercice) (errs []string) {
 
 				// Import choices
 				hasOne := false
+
+				if !flag.NoShuffle {
+					rand.Shuffle(len(flag.Choice), func(i, j int) {
+						flag.Choice[i], flag.Choice[j] = flag.Choice[j], flag.Choice[i]
+					})
+				}
+
 				for cid, choice := range flag.Choice {
 					if len(choice.Label) == 0 {
 						choice.Label = choice.Value
@@ -121,6 +129,13 @@ func SyncExerciceFlags(i Importer, exercice fic.Exercice) (errs []string) {
 			} else {
 				hasOne := false
 				isJustified := false
+
+				if !quest.NoShuffle {
+					rand.Shuffle(len(quest.Choice), func(i, j int) {
+						quest.Choice[i], quest.Choice[j] = quest.Choice[j], quest.Choice[i]
+					})
+				}
+
 				for cid, choice := range quest.Choice {
 					var val bool
 					var justify string

admin/sync/themes.go

@@ -2,6 +2,7 @@ package sync
 
 import (
 	"fmt"
+	"math/rand"
 	"path"
 	"regexp"
 	"strings"
@@ -54,6 +55,10 @@ func SyncThemes(i Importer) []string {
 	if themes, err := getThemes(i); err != nil {
 		errs = append(errs, err.Error())
 	} else {
+		rand.Shuffle(len(themes), func(i, j int) {
+			themes[i], themes[j] = themes[j], themes[i]
+		})
+
 		for _, tdir := range themes {
 			var authors []string
 			var intro string