feat(scm): implement pull request and git operations providers

Signed-off-by: Ushira Dineth <[email protected]>

Author: ushiradineth

internal/scms/bitbucket/git_operations.go

@@ -0,0 +1,68 @@
+package bitbucket
+
+import (
+	"context"
+	"fmt"
+	"net/url"
+
+	"github.com/ktrysmt/go-bitbucket"
+	v1 "k8s.io/api/core/v1"
+
+	"github.com/argoproj-labs/gitops-promoter/api/v1alpha1"
+	"github.com/argoproj-labs/gitops-promoter/internal/scms"
+)
+
+// GitAuthenticationProvider implements the scms.GitOperationsProvider interface for Bitbucket.
+type GitAuthenticationProvider struct {
+	scmProvider v1alpha1.GenericScmProvider
+	secret      *v1.Secret
+	client      *bitbucket.Client
+}
+
+var _ scms.GitOperationsProvider = &GitAuthenticationProvider{}
+
+// NewBitbucketGitAuthenticationProvider creates a new instance of GitAuthenticationProvider for Bitbucket.
+func NewBitbucketGitAuthenticationProvider(scmProvider v1alpha1.GenericScmProvider, secret *v1.Secret) (*GitAuthenticationProvider, error) {
+	client, err := GetClient(*secret)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create Bitbucket Client: %w", err)
+	}
+
+	return &GitAuthenticationProvider{
+		scmProvider: scmProvider,
+		secret:      secret,
+		client:      client,
+	}, nil
+}
+
+// GetGitHttpsRepoUrl constructs the HTTPS URL for a Bitbucket repository based on the provided GitRepository object.
+func (_ GitAuthenticationProvider) GetGitHttpsRepoUrl(repo v1alpha1.GitRepository) string {
+	var repoUrl string
+	repoUrl = fmt.Sprintf("https://bitbucket.com/%s/%s.git", repo.Spec.Bitbucket.Workspace, repo.Spec.Bitbucket.Repository)
+	if _, err := url.Parse(repoUrl); err != nil {
+		return ""
+	}
+	return repoUrl
+}
+
+// GetToken retrieves the Bitbucket access token from the secret.
+func (bb GitAuthenticationProvider) GetToken(ctx context.Context) (string, error) {
+	return string(bb.secret.Data["token"]), nil
+}
+
+// GetUser returns a placeholder user for Bitbucket authentication.
+func (_ GitAuthenticationProvider) GetUser(ctx context.Context) (string, error) {
+	return "x-token-auth", nil
+}
+
+// GetClient creates a new Bitbucket client using the provided secret and domain.
+func GetClient(secret v1.Secret) (*bitbucket.Client, error) {
+	token := string(secret.Data["token"])
+	if token == "" {
+		return nil, fmt.Errorf("secret %q is missing required data key 'token'", secret.Name)
+	}
+
+	client := bitbucket.NewOAuthbearerToken(token)
+
+	return client, nil
+}