refactor(grafanabackuper): add grafanabackuper package with backup functionality

pkg/grafanabackuper/client.go

@@ -0,0 +1,84 @@
+package grafanabackuper
+
+import (
+	"context"
+
+	"git.ar21.de/yolokube/grafana-backuper/internal/config"
+	"git.ar21.de/yolokube/grafana-backuper/pkg/git"
+	"git.ar21.de/yolokube/grafana-backuper/pkg/grafana"
+	"github.com/rs/zerolog"
+)
+
+type ClientOption func(*Client)
+
+func WithZerologLogger(logger zerolog.Logger) ClientOption {
+	return func(c *Client) {
+		c.logger = logger
+	}
+}
+
+type Client struct {
+	git     *git.Project
+	grafana *grafana.Client
+	logger  zerolog.Logger
+	signer  *git.SignKey
+
+	Backup BackupClient
+}
+
+func NewClient(options ...ClientOption) *Client {
+	client := &Client{}
+
+	for _, option := range options {
+		option(client)
+	}
+
+	client.Backup = BackupClient{client: client}
+
+	return client
+}
+
+func (c *Client) Prepare(ctx context.Context, cfg *config.Config) error {
+	c.logger.Debug().Msg("Creating new Grafana Client")
+	c.grafana = grafana.NewClient(
+		cfg.GrafanaURL,
+		grafana.WithToken(cfg.GrafanaToken),
+	)
+	c.logger.Debug().Msg("Created new Grafana Client successfully")
+
+	c.git = git.NewProject(
+		cfg.GitRepo,
+		git.WithBasicAuth(cfg.GitUser, cfg.GitPass),
+		git.WithBranch(cfg.GitBranch),
+		git.WithOutputWriter(cfg.Output),
+	)
+
+	c.logger.Debug().Msg("Cloning git project")
+	if err := c.git.Clone(ctx); err != nil {
+		return err
+	}
+
+	c.logger.Debug().Msg("Checking out git project")
+	if err := c.git.Checkout(); err != nil {
+		return err
+	}
+
+	c.logger.Debug().Msg("Pulling git project content")
+	if err := c.git.Pull(ctx); err != nil {
+		return err
+	}
+
+	c.logger.Debug().Msg("Loading git logs")
+	return c.git.LoadLogs()
+}
+
+func (c *Client) GetSigner(cfg *config.Config) error {
+	if cfg.GPGKey == "" {
+		c.logger.Debug().Msg("GPG key path parameter is empty")
+		return nil
+	}
+
+	c.signer = &git.SignKey{KeyFile: cfg.GPGKey}
+	c.logger.Debug().Msg("Reading GPG key file")
+	return c.signer.ReadKeyFile()
+}