add phashcompare tool

cmd/phashcompare/main.go

@@ -0,0 +1,51 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/corona10/goimagehash"
+	"github.com/stashapp/stash/pkg/utils"
+)
+
+func CompareHashes(hash1 string, hash2 string) (int, error) {
+	phash1, err := utils.StringToPhash(hash1)
+	if err != nil {
+		return -1, fmt.Errorf("phash 1 error: %s", err)
+	}
+
+	phash2, err := utils.StringToPhash(hash2)
+	if err != nil {
+		return -1, fmt.Errorf("phash 2 error: %s", err)
+	}
+
+	imageHash := goimagehash.NewImageHash(uint64(phash1), goimagehash.PHash)
+	otherHash := goimagehash.NewImageHash(uint64(phash2), goimagehash.PHash)
+
+	return imageHash.Distance(otherHash)
+}
+
+func main() {
+	args := os.Args[1:]
+
+	if len(args) != 2 {
+		fmt.Println("arg 1: phash 1")
+		fmt.Println("arg 2: phash 2")
+		return
+	}
+
+	hash1 := args[0]
+	hash2 := args[1]
+
+	distance, err := CompareHashes(hash1, hash2)
+	if err != nil {
+		fmt.Println(err)
+		return
+	}
+
+	fmt.Println()
+	fmt.Printf("Distance: %d\n", distance)
+	fmt.Printf("PHash 1:  %s\n", hash1)
+	fmt.Printf("PHash 2:  %s\n", hash2)
+	fmt.Println()
+}

go.mod

@@ -2,10 +2,12 @@ module github.com/peolic/videohashes
 
 go 1.18
 
-require github.com/stashapp/stash v0.16.2-0.20220726044218-cba0fddf6113
+require (
+	github.com/corona10/goimagehash v1.0.3
+	github.com/stashapp/stash v0.16.2-0.20220726044218-cba0fddf6113
+)
 
 require (
-	github.com/corona10/goimagehash v1.0.3 // indirect
 	github.com/disintegration/imaging v1.6.0 // indirect
 	github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646 // indirect
 	github.com/sirupsen/logrus v1.8.1 // indirect