From f61a4878ef379a2b74495377098fe4fc660afa00 Mon Sep 17 00:00:00 2001
From: baxiry <ahmedalbachiry@gmail.com>
Date: Mon, 22 Jul 2024 22:55:23 +0300
Subject: [PATCH] feat string operations

---
 engine/filter.go | 52 +++++++++++++++++++++++++++++++++---------------
 1 file changed, 36 insertions(+), 16 deletions(-)

diff --git a/engine/filter.go b/engine/filter.go
index 04172cf..b363a2e 100644
--- a/engine/filter.go
+++ b/engine/filter.go
@@ -96,55 +96,75 @@ func match(filter gjson.Result, data string, ids ...int64) (result bool, err err
 					switch sQueryKey.Str {
 
 					// compare sQueryKey
-					case "$gt":
-						if !(dataVal.Str > sQueryVal.Str) {
+
+					case "$st": // start with ..
+						if !strings.HasPrefix(dataVal.Str, sQueryVal.Str) {
 							result = false
 						}
 						return result
 
-					case "$lt":
-						if !(dataVal.Str < sQueryVal.Str) {
+					case "$en": // end with ..
+						if !strings.HasSuffix(dataVal.Str, sQueryVal.Str) {
 							result = false
 						}
 						return result
 
-					case "$gte":
-						if !(dataVal.Str >= sQueryVal.Str) {
+					case "$c": // contains ..
+						if !strings.Contains(dataVal.Str, sQueryVal.Str) {
 							result = false
 						}
 						return result
 
-					case "$lte":
-						if !(dataVal.Str <= sQueryVal.Str) {
+					case "$nst": // not start with ..
+						if strings.HasPrefix(dataVal.Str, sQueryVal.Str) {
 							result = false
 						}
 						return result
 
-					case "$eq":
-						if dataVal.Str != sQueryVal.Str {
+					case "$nen": // not end with ..
+						if strings.HasSuffix(dataVal.Str, sQueryVal.Str) {
 							result = false
 						}
 						return result
+
+					case "$nc": // not contains ..
+						if strings.Contains(dataVal.Str, sQueryVal.Str) {
+							result = false
+						}
+						return result
+
 					case "$ne":
 						if dataVal.Str == sQueryVal.Str {
 							result = false
 						}
 						return result
 
-					case "$st": // start with ..
-						if !strings.HasPrefix(dataVal.Str, sQueryVal.Str) {
+					case "$eq":
+						if dataVal.Str != sQueryVal.Str {
 							result = false
 						}
 						return result
 
-					case "$en": // end with ..
-						if !strings.HasSuffix(dataVal.Str, sQueryVal.Str) {
+					case "$gt":
+						if !(dataVal.Str > sQueryVal.Str) {
 							result = false
 						}
 						return result
 
-					case "$c": // contains ..
-						if !strings.Contains(dataVal.Str, sQueryVal.Str) {
+					case "$lt":
+						if !(dataVal.Str < sQueryVal.Str) {
+							result = false
+						}
+						return result
+
+					case "$gte":
+						if !(dataVal.Str >= sQueryVal.Str) {
+							result = false
+						}
+						return result
+
+					case "$lte":
+						if !(dataVal.Str <= sQueryVal.Str) {
 							result = false
 						}
 						return result