bridge: allow to configure and pull without having set a user first

- init() only the importer or exporter as required
- assign a "default user" user Id to credentials at creation if no user has been set
- "bridge auth": also display the user
- "bridge auth show": adapt to a potential "default user" user Id
- "bridge configure": allow to run without a user set
- "bridge pull": allow to run without a user set
- "user adopt": replace "default user" by the actual user id when run

3 files changed, 19 insertions, 5 deletions

diff --git a/bridge/github/config.go b/bridge/github/config.go
index bc26a2fc..ea4b622f 100644
--- a/bridge/github/config.go
+++ b/bridge/github/config.go
@@ -25,6 +25,7 @@ import (
 	"github.com/MichaelMure/git-bug/bridge/core/auth"
 	"github.com/MichaelMure/git-bug/cache"
 	"github.com/MichaelMure/git-bug/entity"
+	"github.com/MichaelMure/git-bug/identity"
 	"github.com/MichaelMure/git-bug/repository"
 	"github.com/MichaelMure/git-bug/util/colors"
 	"github.com/MichaelMure/git-bug/util/interrupt"
@@ -89,10 +90,16 @@ func (g *Github) Configure(repo *cache.RepoCache, params core.BridgeParams) (cor
 	}
 
 	user, err := repo.GetUserIdentity()
-	if err != nil {
+	if err != nil && err != identity.ErrNoIdentitySet {
 		return nil, err
 	}
 
+	// default to a "to be filled" user Id if we don't have a valid one yet
+	userId := auth.DefaultUserId
+	if user != nil {
+		userId = user.Id()
+	}
+
 	var cred auth.Credential
 
 	switch {
@@ -101,13 +108,13 @@ func (g *Github) Configure(repo *cache.RepoCache, params core.BridgeParams) (cor
 		if err != nil {
 			return nil, err
 		}
-		if cred.UserId() != user.Id() {
+		if user != nil && cred.UserId() != user.Id() {
 			return nil, fmt.Errorf("selected credential don't match the user")
 		}
 	case params.TokenRaw != "":
-		cred = auth.NewToken(user.Id(), params.TokenRaw, target)
+		cred = auth.NewToken(userId, params.TokenRaw, target)
 	default:
-		cred, err = promptTokenOptions(repo, user.Id(), owner, project)
+		cred, err = promptTokenOptions(repo, userId, owner, project)
 		if err != nil {
 			return nil, err
 		}
@@ -326,7 +333,7 @@ func promptToken() (string, error) {
 			return token, nil
 		}
 
-		fmt.Println("token is invalid")
+		fmt.Println("token has incorrect format")
 	}
 }
 
diff --git a/bridge/github/import.go b/bridge/github/import.go
index 092e3e71..dfc851fd 100644
--- a/bridge/github/import.go
+++ b/bridge/github/import.go
@@ -12,6 +12,7 @@ import (
 	"github.com/MichaelMure/git-bug/bug"
 	"github.com/MichaelMure/git-bug/cache"
 	"github.com/MichaelMure/git-bug/entity"
+	"github.com/MichaelMure/git-bug/identity"
 	"github.com/MichaelMure/git-bug/util/text"
 )
 
@@ -47,6 +48,9 @@ func (gi *githubImporter) Init(repo *cache.RepoCache, conf core.Configuration) e
 	if err == nil {
 		opts = append(opts, auth.WithUserId(user.Id()))
 	}
+	if err == identity.ErrNoIdentitySet {
+		opts = append(opts, auth.WithUserId(auth.DefaultUserId))
+	}
 
 	creds, err := auth.List(repo, opts...)
 	if err != nil {
diff --git a/bridge/github/import_test.go b/bridge/github/import_test.go
index 304229a0..57bab61e 100644
--- a/bridge/github/import_test.go
+++ b/bridge/github/import_test.go
@@ -143,6 +143,9 @@ func Test_Importer(t *testing.T) {
 	err = author.Commit(repo)
 	require.NoError(t, err)
 
+	err = identity.SetUserIdentity(repo, author)
+	require.NoError(t, err)
+
 	token := auth.NewToken(author.Id(), envToken, target)
 	err = auth.Store(repo, token)
 	require.NoError(t, err)