[feat] Hash Template Images

backend/Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.21.7-alpine
+FROM golang:1.22.2-alpine
 # TODO: Add psql to the image?
 # TODO: depends on in docker compose?
 

backend/go.mod

@@ -1,17 +1,30 @@
 module art-peace-backend
 
-go 1.21.7
+go 1.22.0
 
-require github.com/redis/go-redis/v9 v9.5.1
+toolchain go1.22.2
 
 require (
+	github.com/NethermindEth/juno v0.11.5
+	github.com/gorilla/websocket v1.5.1
+	github.com/jackc/pgx/v5 v5.5.5
+	github.com/redis/go-redis/v9 v9.5.1
+)
+
+require (
+	github.com/bits-and-blooms/bitset v1.13.0 // indirect
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
+	github.com/consensys/bavard v0.1.13 // indirect
+	github.com/consensys/gnark-crypto v0.12.1 // indirect
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
-	github.com/gorilla/websocket v1.5.1 // indirect
+	github.com/fxamacker/cbor/v2 v2.5.0 // indirect
 	github.com/jackc/pgpassfile v1.0.0 // indirect
 	github.com/jackc/pgservicefile v0.0.0-20221227161230-091c0ba34f0a // indirect
-	github.com/jackc/pgx/v5 v5.5.5 // indirect
-	golang.org/x/crypto v0.17.0 // indirect
-	golang.org/x/net v0.17.0 // indirect
+	github.com/mmcloughlin/addchain v0.4.0 // indirect
+	github.com/x448/float16 v0.8.4 // indirect
+	golang.org/x/crypto v0.18.0 // indirect
+	golang.org/x/net v0.20.0 // indirect
+	golang.org/x/sys v0.16.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
+	rsc.io/tmplfunc v0.0.3 // indirect
 )

backend/go.sum

@@ -1,27 +1,121 @@
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backend/routes/templates.go

@@ -5,11 +5,13 @@ import (
 	"fmt"
 	"io"
 	"io/ioutil"
-	"math/rand"
 	"net/http"
 	"os"
 	"os/exec"
 
+  "github.com/NethermindEth/juno/core/crypto"
+  "github.com/NethermindEth/juno/core/felt"
+
 	"art-peace-backend/backend"
 )
 
@@ -21,10 +23,14 @@ func InitTemplateRoutes() {
 
 // TODO: Add specific location for template images
 
-func hashTemplateImage(imageData []byte) string {
-  // TODO: Use poseidon hash to hash image data and return hash
-  //       Make sure the hash matches the hash generated by the contract
-  return "hash" + string(rand.Intn(1000000))
+func hashTemplateImage(pixelData []byte) string {
+  var data[]*felt.Felt
+  for _, pixel := range pixelData {
+    f := new(felt.Felt).SetUint64(uint64(pixel))
+    data = append(data, f)
+  }
+  hash := crypto.PoseidonArray(data...)
+  return hash.String()
 }
 
 func imageToPixelData(imageData []byte) []byte {