chore(cmd/backup): split up backup function to helper package

internal/helper/helper.go

@@ -0,0 +1,90 @@
+package helper
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+
+	"git.ar21.de/yolokube/grafana-backuper/internal/config"
+	"git.ar21.de/yolokube/grafana-backuper/pkg/git"
+	"git.ar21.de/yolokube/grafana-backuper/pkg/grafana"
+)
+
+var ErrAlreadyCommited = errors.New("already committed")
+
+func CreateCommitMsg(d *grafana.DashboardVersion, title, uid string) string {
+	commitMsg := fmt.Sprintf("%s: Update %s to version %d", title, uid, d.ID)
+
+	if d.Message != "" {
+		commitMsg += fmt.Sprintf(" => %s", d.Message)
+	}
+
+	return commitMsg
+}
+
+func CommitVersion(
+	dashboard *grafana.Dashboard,
+	dashboardVersion *grafana.DashboardVersion,
+	dashboardInfo *grafana.SearchResult,
+	project *git.Project,
+	cfg *config.Config,
+	signer git.SignKey,
+	force bool,
+) (string, error) {
+	commitMsg := CreateCommitMsg(dashboardVersion, dashboardInfo.Title, dashboardInfo.UID)
+
+	if !force && project.CommitExists(dashboardVersion.DashboardUID, dashboardVersion.ID) {
+		return commitMsg, ErrAlreadyCommited
+	}
+
+	UpdateDashboardInfo(dashboard, dashboardVersion)
+
+	data, err := json.MarshalIndent(grafana.SchemaFromDashboardMeta(dashboard), "", "  ")
+	if err != nil {
+		return commitMsg, err
+	}
+
+	commitOpts := []git.CommitOption{
+		git.WithAuthor(dashboardVersion.CreatedBy, ""),
+		git.WithFileContent(data, dashboardInfo.Title, dashboard.FolderTitle),
+		git.WithSigner(signer),
+	}
+
+	if cfg.GitUser != "" {
+		commitOpts = append(commitOpts, git.WithCommitter(cfg.GitUser, cfg.GitEmail))
+	}
+
+	commit := project.NewCommit(commitOpts...)
+	return commitMsg, commit.Create(commitMsg)
+}
+
+func PrepareProject(ctx context.Context, c *config.Config) (*git.Project, error) {
+	project := git.NewProject(
+		c.GitRepo,
+		git.WithBasicAuth(c.GitUser, c.GitPass),
+		git.WithBranch(c.GitBranch),
+		git.WithOutputWriter(c.Output),
+	)
+
+	if err := project.Clone(ctx); err != nil {
+		return nil, err
+	}
+
+	if err := project.Checkout(); err != nil {
+		return nil, err
+	}
+
+	if err := project.Pull(ctx); err != nil {
+		return nil, err
+	}
+
+	return project, nil
+}
+
+func UpdateDashboardInfo(d *grafana.Dashboard, dv *grafana.DashboardVersion) {
+	d.Dashboard = dv.Data
+	d.UpdatedBy = dv.CreatedBy
+	d.Updated = dv.Created
+	d.Version = dv.Version
+}