feat(vcs): extracts VCS cmds out. Exposes git command for running arbitrary git command.

cmd/sync.go

@@ -0,0 +1,133 @@
+/*
+Copyright © 2025 Lewis Wynne <lew@ily.rs>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+package cmd
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	"github.com/spf13/cobra"
+)
+
+var syncCmd = &cobra.Command{
+	Use:          "sync",
+	Short:        "Manually sync your stores with Git",
+	SilenceUsage: true,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		return sync(true)
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(syncCmd)
+}
+
+func sync(manual bool) error {
+	store := &Store{}
+	repoDir, err := ensureVCSInitialized()
+	if err != nil {
+		return err
+	}
+
+	remoteInfo, err := repoRemoteInfo(repoDir)
+	if err != nil {
+		return err
+	}
+
+	var ahead int
+	if remoteInfo.Ref != "" {
+		if manual || config.Git.AutoFetch {
+			if err := runGit(repoDir, "fetch", "--prune"); err != nil {
+				return err
+			}
+		}
+		remoteAhead, behind, err := repoAheadBehind(repoDir, remoteInfo.Ref)
+		if err != nil {
+			return err
+		}
+		ahead = remoteAhead
+		if behind > 0 {
+			if ahead > 0 {
+				return fmt.Errorf("repo diverged from remote (ahead %d, behind %d); resolve manually", ahead, behind)
+			}
+			fmt.Printf("remote has %d commit(s) not present locally; discard local changes and pull? (y/n)\n", behind)
+			var confirm string
+			if _, err := fmt.Scanln(&confirm); err != nil {
+				return fmt.Errorf("cannot continue sync: %w", err)
+			}
+			if strings.ToLower(confirm) != "y" {
+				return fmt.Errorf("aborted sync")
+			}
+			dirty, err := repoHasChanges(repoDir)
+			if err != nil {
+				return err
+			}
+			if dirty {
+				stashMsg := fmt.Sprintf("pda sync: %s", time.Now().UTC().Format(time.RFC3339))
+				if err := runGit(repoDir, "stash", "push", "-u", "-m", stashMsg); err != nil {
+					return err
+				}
+			}
+			if err := pullRemote(repoDir, remoteInfo); err != nil {
+				return err
+			}
+			return restoreAllSnapshots(store, repoDir)
+		}
+	}
+
+	if err := exportAllStores(store, repoDir); err != nil {
+		return err
+	}
+	if err := runGit(repoDir, "add", storeDirName); err != nil {
+		return err
+	}
+	changed, err := repoHasStagedChanges(repoDir)
+	if err != nil {
+		return err
+	}
+	madeCommit := false
+	if !changed {
+		fmt.Println("no changes to commit")
+	} else {
+		msg := fmt.Sprintf("sync: %s", time.Now().UTC().Format(time.RFC3339))
+		if err := runGit(repoDir, "commit", "-m", msg); err != nil {
+			return err
+		}
+		madeCommit = true
+	}
+	if manual || config.Git.AutoPush {
+		if remoteInfo.Ref != "" && (madeCommit || ahead > 0) {
+			return pushRemote(repoDir, remoteInfo)
+		}
+		fmt.Println("no remote configured; skipping push")
+	}
+	return nil
+}
+
+func autoSync() error {
+	if !config.Git.AutoCommit {
+		return nil
+	}
+	return sync(false)
+}