admin: New option to drop all solutions from the database

admin/api/sync.go

@@ -5,6 +5,7 @@ import (
 	"log"
 	"net/http"
 	"net/url"
+	"os"
 	"path"
 	"strings"
 
@@ -136,6 +137,45 @@ func declareSyncRoutes(router *gin.RouterGroup) {
 
 		c.JSON(http.StatusOK, true)
 	})
+
+	// Remove soluces from the database.
+	apiSyncRoutes.POST("/drop_soluces", func(c *gin.Context) {
+		exercices, err := fic.GetExercices()
+		if err != nil {
+			log.Println("Unable to GetExercices:", err.Error())
+			c.AbortWithStatusJSON(http.StatusInternalServerError, gin.H{"errmsg": "Unable to retrieve exercices list."})
+			return
+		}
+
+		var errs error
+		for _, e := range exercices {
+			// Remove any published video
+			if len(e.VideoURI) > 0 && strings.HasPrefix(e.VideoURI, "$FILES$") {
+				vpath := path.Join(fic.FilesDir, strings.TrimPrefix(e.VideoURI, "$FILES$/"))
+				err = os.Remove(vpath)
+				if err != nil {
+					errs = multierr.Append(errs, fmt.Errorf("unable to delete published video (%q): %w", e.VideoURI, err))
+				}
+			}
+
+			// Clean the database
+			if len(e.VideoURI) > 0 || len(e.Resolution) > 0 {
+				e.VideoURI = ""
+				e.Resolution = ""
+
+				_, err = e.Update()
+				if err != nil {
+					errs = multierr.Append(errs, fmt.Errorf("unable to update exercice (%d: %s): %w", e.Id, e.Title, err))
+				}
+			}
+		}
+
+		if err != nil {
+			c.JSON(http.StatusInternalServerError, gin.H{"errmsg": flatifySyncErrors(err)})
+		} else {
+			c.JSON(http.StatusOK, true)
+		}
+	})
 }
 
 func declareSyncExercicesRoutes(router *gin.RouterGroup) {