Restrucure project in a way where it is more modular

pkg/commands/git.go

@@ -0,0 +1,71 @@
+package commands
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/Sirupsen/logrus"
+	git "gopkg.in/src-d/go-git.v4"
+)
+
+// GitCommand is our main git interface
+type GitCommand struct {
+	Log       *logrus.Logger
+	OSCommand *OSCommand
+	Worktree  *git.Worktree
+	Repo      *git.Repository
+}
+
+// NewGitCommand it runs git commands
+func NewGitCommand(log *logrus.Logger, osCommand *OSCommand) (*GitCommand, error) {
+	gitCommand := &GitCommand{
+		Log:       log,
+		OSCommand: osCommand,
+	}
+	return gitCommand, nil
+}
+
+// SetupGit sets git repo up
+func (c *GitCommand) SetupGit() {
+	c.verifyInGitRepo()
+	c.navigateToRepoRootDirectory()
+	c.setupWorktree()
+}
+
+func (c *GitCommand) GitIgnore(filename string) {
+	if _, err := c.OSCommand.RunDirectCommand("echo '" + filename + "' >> .gitignore"); err != nil {
+		panic(err)
+	}
+}
+
+func (c *GitCommand) verifyInGitRepo() {
+	if output, err := c.OSCommand.RunCommand("git status"); err != nil {
+		fmt.Println(output)
+		os.Exit(1)
+	}
+}
+
+func (c *GitCommand) navigateToRepoRootDirectory() {
+	_, err := os.Stat(".git")
+	for os.IsNotExist(err) {
+		c.Log.Debug("going up a directory to find the root")
+		os.Chdir("..")
+		_, err = os.Stat(".git")
+	}
+}
+
+func (c *GitCommand) setupWorktree() {
+	var err error
+	r, err := git.PlainOpen(".")
+	if err != nil {
+		panic(err)
+	}
+	c.Repo = r
+
+	w, err := r.Worktree()
+	c.Worktree = w
+	if err != nil {
+		panic(err)
+	}
+	c.Worktree = w
+}