From ba8c1f107821441acbf57fa5a80a6846b547c85c Mon Sep 17 00:00:00 2001
From: unclesam <2036253946@qq.com>
Date: Wed, 8 Jul 2026 15:28:51 +0800
Subject: [PATCH] =?UTF-8?q?feat(utils):=20=E6=96=B0=E5=A2=9E=E6=9F=A5?=
 =?UTF-8?q?=E6=89=BE=E3=80=81MD5=E5=8F=8A=E9=9A=8F=E6=9C=BA=E5=AD=97?=
 =?UTF-8?q?=E7=AC=A6=E4=B8=B2=E5=B7=A5=E5=85=B7?=
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---
 internal/utils/find/enter.go    | 11 +++++++++++
 internal/utils/md5/file_json.go | 18 ++++++++++++++++++
 internal/utils/random/string.go | 14 ++++++++++++++
 3 files changed, 43 insertions(+)
 create mode 100644 internal/utils/find/enter.go
 create mode 100644 internal/utils/md5/file_json.go
 create mode 100644 internal/utils/random/string.go

diff --git a/internal/utils/find/enter.go b/internal/utils/find/enter.go
new file mode 100644
index 0000000..1d11dad
--- /dev/null
+++ b/internal/utils/find/enter.go
@@ -0,0 +1,11 @@
+package find
+
+func InList[T comparable](list []T, key T) (ok bool) {
+	for _, t := range list {
+		if t == key {
+			return true
+		}
+	}
+
+	return false
+}
diff --git a/internal/utils/md5/file_json.go b/internal/utils/md5/file_json.go
new file mode 100644
index 0000000..bf60961
--- /dev/null
+++ b/internal/utils/md5/file_json.go
@@ -0,0 +1,18 @@
+package md5
+
+import (
+	"crypto/md5"
+	"encoding/hex"
+	"io"
+)
+
+func Md5WithFile(file io.Reader) string {
+	m := md5.New()
+	_, err := io.Copy(m, file)
+	if err != nil {
+		return ""
+	}
+
+	sum := m.Sum(nil)
+	return hex.EncodeToString(sum)
+}
diff --git a/internal/utils/random/string.go b/internal/utils/random/string.go
new file mode 100644
index 0000000..5517216
--- /dev/null
+++ b/internal/utils/random/string.go
@@ -0,0 +1,14 @@
+package random
+
+import "math/rand"
+
+var letters = []rune("1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
+
+func RandStr(n int) string {
+	b := make([]rune, n)
+	for i := range b {
+		b[i] = letters[rand.Intn(len(letters))]
+	}
+
+	return string(b)
+}