[raffle] Add functionality to reset a raffle

in order to re-use the same raffle by wiping the entrants, resetting
time-fields to their default value and resetting status to draft

Signed-off-by: Knut Ahlers <knut@ahlers.me>

internal/apimodules/raffle/api.go

@@ -117,6 +117,25 @@ var apiRoutes = []plugins.HTTPRouteRegistrationArgs{
 		},
 	},
 
+	{
+		Description: "Resets the raffle (remove entries, reset status & start/close time) given by its ID",
+		HandlerFunc: handleWrap(func(w http.ResponseWriter, r *http.Request, ids map[string]uint64) (any, error) {
+			return nil, errors.Wrap(dbc.Reset(ids["id"]), "resetting raffle")
+		}, []string{"id"}),
+		Method:            http.MethodPut,
+		Module:            moduleName,
+		Name:              "Reset Raffle",
+		Path:              "/{id}/reset",
+		RequiresWriteAuth: true,
+		ResponseType:      plugins.HTTPRouteResponseTypeNo200,
+		RouteParams: []plugins.HTTPRouteParamDocumentation{
+			{
+				Description: "ID of the raffle to reset",
+				Name:        "id",
+			},
+		},
+	},
+
 	{
 		Description: "Duplicates the raffle given by its ID",
 		HandlerFunc: handleWrap(func(w http.ResponseWriter, r *http.Request, ids map[string]uint64) (any, error) {

internal/apimodules/raffle/database.go

@@ -194,6 +194,7 @@ func (d *dbClient) Clone(raffleID uint64) error {
 		return errors.Wrap(err, "getting raffle")
 	}
 
+	raffle.AutoStartAt = nil
 	raffle.CloseAt = nil
 	raffle.Entries = nil
 	raffle.ID = 0
@@ -528,6 +529,33 @@ func (d *dbClient) Reopen(raffleID uint64, duration time.Duration) error {
 	return nil
 }
 
+// Reset resets the raffle participants, the status, start / close
+// times while preserving the rest of the settings
+func (d *dbClient) Reset(raffleID uint64) error {
+	raffle, err := d.Get(raffleID)
+	if err != nil {
+		return errors.Wrap(err, "getting raffle")
+	}
+
+	raffle.AutoStartAt = nil
+	raffle.CloseAt = nil
+	raffle.Entries = nil
+	raffle.Status = raffleStatusPlanned
+
+	if err = helpers.RetryTransaction(d.db.DB(), func(tx *gorm.DB) error {
+		if err = tx.Delete(&raffleEntry{}, "raffle_id = ?", raffleID).Error; err != nil {
+			return errors.Wrap(err, "deleting raffle entries")
+		}
+
+		return tx.Save(raffle).Error
+	}); err != nil {
+		return errors.Wrap(err, "saving cleaned raffle")
+	}
+
+	frontendNotify(frontendNotifyEventRaffleChange)
+	return nil
+}
+
 // Start fetches the given raffle, updates its CloseAt attribute
 // in case it is not already set, sets the raffle to active, updates
 // the raffle in the database and notes its channel/keyword combo

src/raffle.vue

@@ -79,6 +79,18 @@
                 />
               </b-button>
 
+              <b-button
+                variant="warning"
+                :disabled="data.item.status !== 'ended'"
+                title="Reset Raffle"
+                @click="resetRaffle(data.item.id)"
+              >
+                <font-awesome-icon
+                  fixed-width
+                  :icon="['fas', 'recycle']"
+                />
+              </b-button>
+
               <b-button
                 variant="danger"
                 title="Delete Raffle"
@@ -977,6 +989,27 @@ export default {
         .catch(() => this.$root.toastError('Could not re-pick winner!'))
     },
 
+    resetRaffle(id) {
+      this.$bvModal.msgBoxConfirm('Do you really want to reset this raffle?', {
+        buttonSize: 'sm',
+        cancelTitle: 'NO',
+        centered: true,
+        okTitle: 'YES',
+        okVariant: 'danger',
+        size: 'sm',
+        title: 'Please Confirm',
+      })
+        .then(val => {
+          if (!val) {
+            return
+          }
+
+          return axios.put(`raffle/${id}/reset`, {}, this.$root.axiosOptions)
+            .then(() => this.$root.toastSuccess('Raffle reset'))
+            .catch(err => this.$bus.$emit(constants.NOTIFY_FETCH_ERROR, err))
+        })
+    },
+
     saveRaffle() {
       if (this.models.raffle.id) {
         return axios.put(`raffle/${this.models.raffle.id}`, this.transformRaffleToDB(this.models.raffle), this.$root.axiosOptions)