Filter tag by hierarchy (#1746)

* Add API support for filtering tags by parent / children
* Add parent & child tags filters for tags to UI
* Add API support for filtering tags by parent / child count
* Add parent & child count filters for tags to UI
* Update db generator
* Add missing build tag
* Add unit tests

Co-authored-by: WithoutPants <53250216+WithoutPants@users.noreply.github.com>

pkg/sqlite/setup_test.go

@@ -151,6 +151,11 @@ const (
 	tagIdxWithGallery
 	tagIdx1WithGallery
 	tagIdx2WithGallery
+	tagIdxWithChildTag
+	tagIdxWithParentTag
+	tagIdxWithGrandChild
+	tagIdxWithParentAndChild
+	tagIdxWithGrandParent
 	// new indexes above
 	// tags with dup names start from the end
 	tagIdx1WithDupName
@@ -345,6 +350,14 @@ var (
 	}
 )
 
+var (
+	tagParentLinks = [][2]int{
+		{tagIdxWithChildTag, tagIdxWithParentTag},
+		{tagIdxWithGrandChild, tagIdxWithParentAndChild},
+		{tagIdxWithParentAndChild, tagIdxWithGrandParent},
+	}
+)
+
 func TestMain(m *testing.M) {
 	ret := runTests(m)
 	os.Exit(ret)
@@ -499,6 +512,10 @@ func populateDB() error {
 			return fmt.Errorf("error linking gallery studios: %s", err.Error())
 		}
 
+		if err := linkTagsParent(r.Tag()); err != nil {
+			return fmt.Errorf("error linking tags parent: %s", err.Error())
+		}
+
 		if err := createMarker(r.SceneMarker(), sceneIdxWithMarker, tagIdxWithPrimaryMarker, []int{tagIdxWithMarker}); err != nil {
 			return fmt.Errorf("error creating scene marker: %s", err.Error())
 		}
@@ -865,6 +882,22 @@ func getTagPerformerCount(id int) int {
 	return 0
 }
 
+func getTagParentCount(id int) int {
+	if id == tagIDs[tagIdxWithParentTag] || id == tagIDs[tagIdxWithGrandParent] || id == tagIDs[tagIdxWithParentAndChild] {
+		return 1
+	}
+
+	return 0
+}
+
+func getTagChildCount(id int) int {
+	if id == tagIDs[tagIdxWithChildTag] || id == tagIDs[tagIdxWithGrandChild] || id == tagIDs[tagIdxWithParentAndChild] {
+		return 1
+	}
+
+	return 0
+}
+
 //createTags creates n tags with plain Name and o tags with camel cased NaMe included
 func createTags(tqb models.TagReaderWriter, n int, o int) error {
 	const namePlain = "Name"
@@ -1231,6 +1264,25 @@ func linkStudiosParent(qb models.StudioWriter) error {
 	})
 }
 
+func linkTagsParent(qb models.TagReaderWriter) error {
+	return doLinks(tagParentLinks, func(parentIndex, childIndex int) error {
+		tagID := tagIDs[childIndex]
+		parentTags, err := qb.FindByChildTagID(tagID)
+		if err != nil {
+			return err
+		}
+
+		var parentIDs []int
+		for _, parentTag := range parentTags {
+			parentIDs = append(parentIDs, parentTag.ID)
+		}
+
+		parentIDs = append(parentIDs, tagIDs[parentIndex])
+
+		return qb.UpdateParentTags(tagID, parentIDs)
+	})
+}
+
 func addTagImage(qb models.TagWriter, tagIndex int) error {
 	return qb.UpdateImage(tagIDs[tagIndex], models.DefaultTagImage)
 }