factor out code for loading models

pkg/commands/loading_reflog_commits.go

@@ -0,0 +1,54 @@
+package commands
+
+import (
+	"fmt"
+	"regexp"
+	"strconv"
+
+	"github.com/jesseduffield/lazygit/pkg/commands/oscommands"
+	"github.com/jesseduffield/lazygit/pkg/models"
+)
+
+// GetReflogCommits only returns the new reflog commits since the given lastReflogCommit
+// if none is passed (i.e. it's value is nil) then we get all the reflog commits
+func (c *GitCommand) GetReflogCommits(lastReflogCommit *models.Commit, filterPath string) ([]*models.Commit, bool, error) {
+	commits := make([]*models.Commit, 0)
+	re := regexp.MustCompile(`(\w+).*HEAD@\{([^\}]+)\}: (.*)`)
+
+	filterPathArg := ""
+	if filterPath != "" {
+		filterPathArg = fmt.Sprintf(" --follow -- %s", c.OSCommand.Quote(filterPath))
+	}
+
+	cmd := c.OSCommand.ExecutableFromString(fmt.Sprintf("git reflog --abbrev=20 --date=unix %s", filterPathArg))
+	onlyObtainedNewReflogCommits := false
+	err := oscommands.RunLineOutputCmd(cmd, func(line string) (bool, error) {
+		match := re.FindStringSubmatch(line)
+		if len(match) <= 1 {
+			return false, nil
+		}
+
+		unixTimestamp, _ := strconv.Atoi(match[2])
+
+		commit := &models.Commit{
+			Sha:           match[1],
+			Name:          match[3],
+			UnixTimestamp: int64(unixTimestamp),
+			Status:        "reflog",
+		}
+
+		if lastReflogCommit != nil && commit.Sha == lastReflogCommit.Sha && commit.UnixTimestamp == lastReflogCommit.UnixTimestamp {
+			onlyObtainedNewReflogCommits = true
+			// after this point we already have these reflogs loaded so we'll simply return the new ones
+			return true, nil
+		}
+
+		commits = append(commits, commit)
+		return false, nil
+	})
+	if err != nil {
+		return nil, false, err
+	}
+
+	return commits, onlyObtainedNewReflogCommits, nil
+}