admin: Check all theme/exercice attribute are in sync with repo

admin/api/exercice.go

@@ -1,9 +1,11 @@
 package api
 
 import (
+	"bytes"
 	"fmt"
 	"log"
 	"net/http"
+	"path"
 	"reflect"
 	"strconv"
 	"strings"
@@ -32,6 +34,8 @@ func declareExercicesRoutes(router *gin.RouterGroup) {
 	apiExercicesRoutes.PATCH("", partUpdateExercice)
 	apiExercicesRoutes.DELETE("", deleteExercice)
 
+	apiExercicesRoutes.POST("/diff-sync", APIDiffExerciceWithRemote)
+
 	apiExercicesRoutes.GET("/stats.json", getExerciceStats)
 
 	apiExercicesRoutes.GET("/history.json", getExerciceHistory)
@@ -91,8 +95,8 @@ func declareExercicesRoutes(router *gin.RouterGroup) {
 
 	// Remote
 	router.GET("/remote/themes/:thid/exercices/:exid", sync.ApiGetRemoteExercice)
-	router.GET("/remote/themes/:thid/exercices/:exid/hints", sync.ApiGetRemoteExerciceHints)
 	router.GET("/remote/themes/:thid/exercices/:exid/flags", sync.ApiGetRemoteExerciceFlags)
+	router.GET("/remote/themes/:thid/exercices/:exid/hints", sync.ApiGetRemoteExerciceHints)
 }
 
 type Exercice struct {
@@ -130,7 +134,7 @@ func ExerciceHandler(c *gin.Context) {
 
 			c.Set("theme", theme)
 		} else {
-			c.Set("theme", &fic.Theme{Path: sync.StandaloneExercicesDirectory})
+			c.Set("theme", &fic.StandaloneExercicesTheme)
 		}
 	}
 
@@ -1275,3 +1279,343 @@ func updateExerciceTags(c *gin.Context) {
 	exercice.WipeTags()
 	addExerciceTag(c)
 }
+
+type syncDiff struct {
+	Field  string      `json:"field"`
+	Link   string      `json:"link"`
+	Before interface{} `json:"be"`
+	After  interface{} `json:"af"`
+}
+
+func diffExerciceWithRemote(exercice *fic.Exercice, theme *fic.Theme) ([]syncDiff, error) {
+	var diffs []syncDiff
+
+	// Compare exercice attributes
+	thid := exercice.Path[:strings.Index(exercice.Path, "/")]
+	exid := exercice.Path[strings.Index(exercice.Path, "/")+1:]
+	exercice_remote, err := sync.GetRemoteExercice(thid, exid, theme)
+	if err != nil {
+		return nil, err
+	}
+
+	for _, field := range reflect.VisibleFields(reflect.TypeOf(*exercice)) {
+		if ((field.Name == "Image") && path.Base(reflect.ValueOf(*exercice_remote).FieldByName(field.Name).String()) != path.Base(reflect.ValueOf(*exercice).FieldByName(field.Name).String())) || ((field.Name == "Depend") && (((exercice_remote.Depend == nil || exercice.Depend == nil) && exercice.Depend != exercice_remote.Depend) || (exercice_remote.Depend != nil && exercice.Depend != nil && *exercice.Depend != *exercice_remote.Depend))) || (field.Name != "Image" && field.Name != "Depend" && !reflect.ValueOf(*exercice_remote).FieldByName(field.Name).Equal(reflect.ValueOf(*exercice).FieldByName(field.Name))) {
+			if !field.IsExported() || field.Name == "Id" || field.Name == "IdTheme" || field.Name == "IssueKind" || field.Name == "Coefficient" || field.Name == "BackgroundColor" {
+				continue
+			}
+
+			diffs = append(diffs, syncDiff{
+				Field:  field.Name,
+				Link:   fmt.Sprintf("exercices/%d", exercice.Id),
+				Before: reflect.ValueOf(*exercice).FieldByName(field.Name).Interface(),
+				After:  reflect.ValueOf(*exercice_remote).FieldByName(field.Name).Interface(),
+			})
+		}
+	}
+
+	// Compare files
+	files, err := exercice.GetFiles()
+	if err != nil {
+		return nil, fmt.Errorf("Unable to GetFiles: %w", err)
+	}
+
+	files_remote, err := sync.GetRemoteExerciceFiles(thid, exid)
+	if err != nil {
+		return nil, fmt.Errorf("Unable to GetRemoteFiles: %w", err)
+	}
+
+	for i, file_remote := range files_remote {
+		if len(files) <= i {
+			diffs = append(diffs, syncDiff{
+				Field:  fmt.Sprintf("files[%d]", i),
+				Link:   fmt.Sprintf("exercices/%d", exercice.Id),
+				Before: nil,
+				After:  file_remote,
+			})
+			continue
+		}
+
+		for _, field := range reflect.VisibleFields(reflect.TypeOf(*file_remote)) {
+			if !field.IsExported() || field.Name == "Id" || field.Name == "IdExercice" {
+				continue
+			}
+			if ((field.Name == "Path") && path.Base(reflect.ValueOf(*file_remote).FieldByName(field.Name).String()) != path.Base(reflect.ValueOf(*files[i]).FieldByName(field.Name).String())) || ((field.Name == "Checksum" || field.Name == "ChecksumShown") && !bytes.Equal(reflect.ValueOf(*file_remote).FieldByName(field.Name).Bytes(), reflect.ValueOf(*files[i]).FieldByName(field.Name).Bytes())) || (field.Name != "Checksum" && field.Name != "ChecksumShown" && field.Name != "Path" && !reflect.ValueOf(*file_remote).FieldByName(field.Name).Equal(reflect.ValueOf(*files[i]).FieldByName(field.Name))) {
+				diffs = append(diffs, syncDiff{
+					Field:  fmt.Sprintf("files[%d].%s", i, field.Name),
+					Link:   fmt.Sprintf("exercices/%d", exercice.Id),
+					Before: reflect.ValueOf(*files[i]).FieldByName(field.Name).Interface(),
+					After:  reflect.ValueOf(*file_remote).FieldByName(field.Name).Interface(),
+				})
+			}
+		}
+	}
+
+	// Compare flags
+	flags, err := exercice.GetFlags()
+	if err != nil {
+		return nil, fmt.Errorf("Unable to GetFlags: %w", err)
+	}