feat: rename jwt to session & introduce upload keys

internal/auth/ukey/ukey.go

@@ -0,0 +1,52 @@
+package ukey
+
+import (
+	"crypto/rand"
+	"math/big"
+
+	"github.com/cristalhq/base64"
+	"github.com/gin-gonic/gin"
+	"golang.org/x/crypto/blake2b"
+	"stereo.cat/backend/internal/auth"
+	"stereo.cat/backend/internal/types"
+)
+
+func GenerateUploadKey(cfg *types.StereoConfig, user *auth.User, c *gin.Context) []byte {
+	length := 32
+	chars := "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ123456789@#!&*%~?"
+
+	key := make([]byte, length)
+	for i := range length {
+		num, err := rand.Int(rand.Reader, big.NewInt(int64(len(chars))))
+		if err != nil {
+			types.ErrorInvalidParams.Throw(c, err)
+			return nil
+		}
+
+		key[i] = chars[num.Int64()]
+	}
+
+	hasher, err := blake2b.New512(nil)
+	if err != nil {
+		types.ErrorInvalidParams.Throw(c, err)
+		return nil
+	}
+
+	_, err = hasher.Write(key)
+	if err != nil {
+		types.ErrorInvalidParams.Throw(c, err)
+		return nil
+	}
+
+	hashed := base64.RawStdEncoding.EncodeToString(hasher.Sum(nil))
+
+	user.HashedApiKey = hashed
+
+	err = cfg.Database.Updates(user).Error
+	if err != nil {
+		types.ErrorDatabase.Throw(c, err)
+		return nil
+	}
+
+	return key
+}