From 5988bc508f5be772727ef62913725802e0be3ad9 Mon Sep 17 00:00:00 2001
From: kolaente <k@knt.li>
Date: Sun, 6 Sep 2020 19:56:01 +0200
Subject: [PATCH] Add getting tasks from a saved filter

---
 pkg/models/saved_filters.go   | 14 ++++++++++++++
 pkg/models/task_collection.go | 11 +++++++++++
 2 files changed, 25 insertions(+)

diff --git a/pkg/models/saved_filters.go b/pkg/models/saved_filters.go
index 2bfd41fce..07c950f9f 100644
--- a/pkg/models/saved_filters.go
+++ b/pkg/models/saved_filters.go
@@ -51,6 +51,17 @@ func (s *SavedFilter) TableName() string {
 	return "saved_filters"
 }
 
+func (s *SavedFilter) getTaskCollection() *TaskCollection {
+	// We're resetting the listID to return tasks from all lists
+	s.Filters.ListID = 0
+	return s.Filters
+}
+
+func getSavedFilterIDFromListID(listID int64) int64 {
+	// We get the id of the saved filter by multiplying the ListID with -1 and subtracting one
+	return listID*-1 - 1
+}
+
 func (s *SavedFilter) Create(auth web.Auth) error {
 	s.OwnerID = auth.GetID()
 	_, err := x.Insert(s)
@@ -69,7 +80,10 @@ func (s *SavedFilter) ReadOne() error {
 	return err
 }
 
+// ReadAll returns all tasks of a saved filter.
+// Since saved filters are shown in a pseudo-namespace, we can use this function to get all tasks
 func (s *SavedFilter) ReadAll(auth web.Auth, search string, page int, perPage int) (result interface{}, resultCount int, numberOfTotalItems int64, err error) {
+	return
 }
 
 func (s *SavedFilter) Update() error {
diff --git a/pkg/models/task_collection.go b/pkg/models/task_collection.go
index a7eb1d184..00aaeb9fa 100644
--- a/pkg/models/task_collection.go
+++ b/pkg/models/task_collection.go
@@ -102,6 +102,17 @@ func validateTaskField(fieldName string) error {
 // @Router /lists/{listID}/tasks [get]
 func (tf *TaskCollection) ReadAll(a web.Auth, search string, page int, perPage int) (result interface{}, resultCount int, totalItems int64, err error) {
 
+	// If the list id is < -1 this means we're dealing with a saved filter - in that case we get and populate the filter
+	// -1 is the favorites list which works as intended
+	if tf.ListID < -1 {
+		s, err := getSavedFilterSimpleByID(getSavedFilterIDFromListID(tf.ListID))
+		if err != nil {
+			return nil, 0, 0, err
+		}
+
+		return s.getTaskCollection().ReadAll(a, search, page, perPage)
+	}
+
 	if len(tf.SortByArr) > 0 {
 		tf.SortBy = append(tf.SortBy, tf.SortByArr...)
 	}