Initial import with modified Dockerfile for env-based config generation

internal/identity/resolver.go

@@ -0,0 +1,33 @@
+package identity
+
+import (
+	"context"
+
+	"github.com/vincentc-afk/gitea-notification-hub/internal/event"
+)
+
+// ResolvedIdentity represents a resolved external identity
+type ResolvedIdentity struct {
+	Email     string `json:"email"`
+	SlackID   string `json:"slack_id"`
+	SlackName string `json:"slack_name"`
+}
+
+// Resolver resolves Gitea users to external identities (e.g., Slack)
+// This interface allows for different identity providers (Gitea API, LDAP, etc.)
+type Resolver interface {
+	// Resolve returns the external identity for a Gitea user
+	Resolve(ctx context.Context, user event.User) (*ResolvedIdentity, error)
+}
+
+// EmailLookup provides email lookup functionality
+type EmailLookup interface {
+	// LookupEmail looks up a user's email address by username
+	LookupEmail(ctx context.Context, username string) (string, error)
+}
+
+// SlackLookup provides Slack user lookup functionality
+type SlackLookup interface {
+	// LookupSlackIDByEmail finds a Slack user ID by email
+	LookupSlackIDByEmail(ctx context.Context, email string) (slackID, slackName string, err error)
+}