feat(filters): very basic filter parsing

go.sum

@@ -109,6 +109,12 @@ github.com/fsnotify/fsnotify v1.7.0 h1:8JEhPFa5W2WU7YfeZzPNqzMP6Lwt7L2715Ggo0nos
 github.com/fsnotify/fsnotify v1.7.0/go.mod h1:40Bi/Hjc2AVfZrqy+aj+yEI+/bRxZnMJyTJwOpGvigM=
 github.com/gabriel-vasile/mimetype v1.4.3 h1:in2uUcidCuFcDKtdcBxlR0rJ1+fsokWf+uqxgUFjbI0=
 github.com/gabriel-vasile/mimetype v1.4.3/go.mod h1:d8uq/6HKRL6CGdk+aubisF/M5GcPfT7nKyLpA0lbSSk=
+github.com/ganigeorgiev/fexpr v0.3.0 h1:RwSyJBME+g/XdzlUW0paH/4VXhLHPg+rErtLeC7K8Ew=
+github.com/ganigeorgiev/fexpr v0.3.0/go.mod h1:RyGiGqmeXhEQ6+mlGdnUleLHgtzzu/VGO2WtJkF5drE=
+github.com/getsentry/sentry-go v0.25.0 h1:q6Eo+hS+yoJlTO3uu/azhQadsD8V+jQn2D8VvX1eOyI=
+github.com/getsentry/sentry-go v0.25.0/go.mod h1:lc76E2QywIyW8WuBnwl8Lc4bkmQH4+w1gwTf25trprY=
+github.com/getsentry/sentry-go v0.26.0 h1:IX3++sF6/4B5JcevhdZfdKIHfyvMmAq/UnqcyT2H6mA=
+github.com/getsentry/sentry-go v0.26.0/go.mod h1:lc76E2QywIyW8WuBnwl8Lc4bkmQH4+w1gwTf25trprY=
 github.com/getsentry/sentry-go v0.27.0 h1:Pv98CIbtB3LkMWmXi4Joa5OOcwbmnX88sF5qbK3r3Ps=
 github.com/getsentry/sentry-go v0.27.0/go.mod h1:lc76E2QywIyW8WuBnwl8Lc4bkmQH4+w1gwTf25trprY=
 github.com/gin-contrib/sse v0.1.0 h1:Y/yl/+YNO8GZSjAhjMsSuLt29uWRFHdHYUb5lYOV9qE=

pkg/models/task_collection.go

@@ -33,17 +33,20 @@ type TaskCollection struct {
 	OrderBy    []string `query:"order_by" json:"order_by"`
 	OrderByArr []string `query:"order_by[]" json:"-"`
 
-	// The field name of the field to filter by
+	// Deprecated: The field name of the field to filter by
 	FilterBy    []string `query:"filter_by" json:"filter_by"`
 	FilterByArr []string `query:"filter_by[]" json:"-"`
-	// The value of the field name to filter by
+	// Deprecated: The value of the field name to filter by
 	FilterValue    []string `query:"filter_value" json:"filter_value"`
 	FilterValueArr []string `query:"filter_value[]" json:"-"`
-	// The comparator for field and value
+	// Deprecated: The comparator for field and value
 	FilterComparator    []string `query:"filter_comparator" json:"filter_comparator"`
 	FilterComparatorArr []string `query:"filter_comparator[]" json:"-"`
-	// The way all filter conditions are concatenated together, can be either "and" or "or".,
+	// Deprecated: The way all filter conditions are concatenated together, can be either "and" or "or".,
 	FilterConcat string `query:"filter_concat" json:"filter_concat"`
+
+	Filter string `query:"filter" json:"filter"`
+
 	// If set to true, the result will also include null values
 	FilterIncludeNulls bool `query:"filter_include_nulls" json:"filter_include_nulls"`
 
@@ -110,8 +113,8 @@ func getTaskFilterOptsFromCollection(tf *TaskCollection) (opts *taskSearchOption
 
 	opts = &taskSearchOptions{
 		sortby:             sort,
-		filterConcat:       taskFilterConcatinator(tf.FilterConcat),
 		filterIncludeNulls: tf.FilterIncludeNulls,
+		filter:             tf.Filter,
 	}
 
 	opts.filters, err = getTaskFiltersByCollections(tf)

pkg/models/task_collection_filter.go

@@ -18,6 +18,7 @@ package models
 
 import (
 	"fmt"
+	"github.com/ganigeorgiev/fexpr"
 	"reflect"
 	"strconv"
 	"strings"
@@ -108,11 +109,20 @@ func getTaskFiltersByCollections(c *TaskCollection) (filters []*taskFilter, err
 		}
 	}
 
-	filters = make([]*taskFilter, 0, len(c.FilterBy))
-	for i, f := range c.FilterBy {
-		filter := &taskFilter{
-			field:      f,
-			comparator: taskFilterComparatorEquals,
+	parsedFilter, err := fexpr.Parse(c.Filter)
+	if err != nil {
+		return nil, err
+	}
+
+	filters = make([]*taskFilter, 0, len(parsedFilter))
+	for i, f := range parsedFilter {
+
+		filter := &taskFilter{}
+		switch v := f.Item.(type) {
+		case fexpr.Expr:
+			filter.field = v.Left.Literal
+			filter.comparator = v.Op
+			filter.value = v.Right.Literal // TODO: nesting
 		}
 
 		if len(c.FilterComparator) > i {

pkg/models/task_collection_test.go

@@ -680,6 +680,8 @@ func TestTaskCollection_ReadAll(t *testing.T) {
 		FilterComparator   []string
 		FilterIncludeNulls bool
 
+		Filter string
+
 		CRUDable web.CRUDable
 		Rights   web.Rights
 	}
@@ -795,6 +797,7 @@ func TestTaskCollection_ReadAll(t *testing.T) {
 				FilterBy:         []string{"start_date", "end_date"},
 				FilterValue:      []string{"2018-12-11T03:46:40+00:00", "2018-12-13T11:20:01+00:00"},
 				FilterComparator: []string{"greater", "less"},
+				Filter:           "start_date>'2018-12-11T03:46:40+00:00' || end_date<'2018-12-13T11:20:01+00:00'",
 			},
 			args: defaultArgs,
 			want: []*Task{
@@ -1339,6 +1342,8 @@ func TestTaskCollection_ReadAll(t *testing.T) {
 				FilterComparator:   tt.fields.FilterComparator,
 				FilterIncludeNulls: tt.fields.FilterIncludeNulls,
 
+				Filter: tt.fields.Filter,
+
 				CRUDable: tt.fields.CRUDable,
 				Rights:   tt.fields.Rights,
 			}

pkg/models/tasks.go

@@ -174,6 +174,7 @@ type taskSearchOptions struct {
 	filters            []*taskFilter
 	filterConcat       taskFilterConcatinator
 	filterIncludeNulls bool
+	filter             string
 	projectIDs         []int64
 }