feat(edge/stacks): use source ID for edge stack git creation [BE-13044] (#2926)

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

api/gitops/sources/repo_config.go

@@ -0,0 +1,55 @@
+package sources
+
+import (
+	portainer "github.com/portainer/portainer/api"
+	gittypes "github.com/portainer/portainer/api/git/types"
+	"github.com/portainer/portainer/pkg/fips"
+	httperror "github.com/portainer/portainer/pkg/libhttp/error"
+)
+
+// RepoConfigInput holds the raw payload fields needed to resolve a git RepoConfig.
+// Set SourceID to resolve URL/auth from a stored source; otherwise provide the inline fields.
+type RepoConfigInput struct {
+	SourceID                 portainer.SourceID
+	ReferenceName            string
+	ConfigFilePath           string
+	RepositoryURL            string
+	TLSSkipVerify            bool
+	RepositoryAuthentication bool
+	Username                 string
+	Password                 string
+	Provider                 gittypes.GitProvider
+	AuthorizationType        gittypes.GitCredentialAuthType
+}
+
+// ResolveRepoConfig builds a RepoConfig from either a SourceID or inline URL/auth fields.
+func ResolveRepoConfig(tx gitSourceStore, input RepoConfigInput) (gittypes.RepoConfig, *httperror.HandlerError) {
+	cfg := gittypes.RepoConfig{
+		ReferenceName:  input.ReferenceName,
+		ConfigFilePath: input.ConfigFilePath,
+	}
+
+	if input.SourceID != 0 {
+		src, httpErr := ValidateGitSourceAccess(tx, input.SourceID)
+		if httpErr != nil {
+			return gittypes.RepoConfig{}, httpErr
+		}
+		cfg.URL = src.Git.URL
+		cfg.Authentication = src.Git.Authentication
+		cfg.TLSSkipVerify = src.Git.TLSSkipVerify
+	} else {
+		cfg.URL = input.RepositoryURL
+		cfg.TLSSkipVerify = input.TLSSkipVerify
+		if input.RepositoryAuthentication {
+			cfg.Authentication = &gittypes.GitAuthentication{
+				Username:          input.Username,
+				Password:          input.Password,
+				Provider:          input.Provider,
+				AuthorizationType: input.AuthorizationType,
+			}
+		}
+	}
+
+	cfg.TLSSkipVerify = cfg.TLSSkipVerify && fips.CanTLSSkipVerify()
+	return cfg, nil
+}