From 19ef9f937c12abf10720c8db1813df65af268be2 Mon Sep 17 00:00:00 2001
From: Sinh <luuvansinh555@gmail.com>
Date: Wed, 13 Oct 2021 16:30:00 +0700
Subject: [PATCH 1/2] add query search string

---
 go.mod | 1 +
 go.sum | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/go.mod b/go.mod
index 753acf7..8ca4092 100644
--- a/go.mod
+++ b/go.mod
@@ -5,4 +5,5 @@ go 1.16
 require (
 	github.com/logrusorgru/aurora v2.0.3+incompatible
 	go.mongodb.org/mongo-driver v1.7.1
+	golang.org/x/text v0.3.7 // indirect
 )
diff --git a/go.sum b/go.sum
index ad47448..e87e9d4 100644
--- a/go.sum
+++ b/go.sum
@@ -103,6 +103,8 @@ golang.org/x/sys v0.0.0-20190531175056-4c3a928424d2/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.5 h1:i6eZZ+zk0SOf0xgBpEpPD18qWcJda6q1sxt3S0kzyUQ=
 golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190329151228-23e29df326fe/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190416151739-9c9e1878f421/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=

From 48c904d272a7ed0342523d90a2e059b4fadfc823 Mon Sep 17 00:00:00 2001
From: Sinh <luuvansinh555@gmail.com>
Date: Wed, 13 Oct 2021 16:30:23 +0700
Subject: [PATCH 2/2] add query search string

---
 search_string.go | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 search_string.go

diff --git a/search_string.go b/search_string.go
new file mode 100644
index 0000000..5015bad
--- /dev/null
+++ b/search_string.go
@@ -0,0 +1,37 @@
+package mongodb
+
+import (
+	"regexp"
+	"strings"
+	"unicode"
+
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/x/bsonx"
+	"golang.org/x/text/runes"
+	"golang.org/x/text/transform"
+	"golang.org/x/text/unicode/norm"
+)
+
+// GenerateQuerySearchString ...
+func GenerateQuerySearchString(s string) bson.M {
+	return bson.M{
+		"$regex": bsonx.Regex(NonAccentVietnamese(s), "i"),
+	}
+}
+
+// NonAccentVietnamese ...
+func NonAccentVietnamese(str string) string {
+	str = strings.ToLower(str)
+	str = replaceStringWithRegex(str, `đ`, "d")
+	t := transform.Chain(norm.NFD, runes.Remove(runes.In(unicode.Mn)), norm.NFC)
+	result, _, _ := transform.String(t, str)
+	result = replaceStringWithRegex(result, `[^a-zA-Z0-9\s]`, "")
+
+	return result
+}
+
+// replaceStringWithRegex ...
+func replaceStringWithRegex(src string, regex string, replaceText string) string {
+	reg := regexp.MustCompile(regex)
+	return reg.ReplaceAllString(src, replaceText)
+}