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package main
import (
"context"
"flag"
"fmt"
"os"
"os/exec"
"os/signal"
"path"
"path/filepath"
"strings"
"github.com/npfaro/dumbforge/internal/gitutil"
"github.com/npfaro/dumbforge/internal/helper"
"github.com/npfaro/dumbforge/internal/publish"
"github.com/npfaro/dumbforge/internal/remoteurl"
"github.com/npfaro/dumbforge/internal/s3store"
"github.com/npfaro/dumbforge/internal/site"
)
var version = "0.1.0-dev"
func main() {
ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt)
defer stop()
base := strings.TrimSuffix(filepath.Base(os.Args[0]), ".exe")
if base == "git-remote-dumbforge" {
if len(os.Args) < 3 {
die("git remote helper requires a remote name and URL")
}
if err := helper.Run(ctx, os.Args[2], os.Stdin, os.Stdout, os.Stderr); err != nil {
die("%v", err)
}
return
}
if len(os.Args) < 2 {
usage()
os.Exit(2)
}
switch os.Args[1] {
case "version", "--version", "-v":
fmt.Printf("dumbforge %s\n", version)
case "remote":
if err := remoteCommand(os.Args[2:]); err != nil {
die("%v", err)
}
case "site":
if err := siteCommand(ctx, os.Args[2:]); err != nil {
die("%v", err)
}
case "__remote-helper":
if len(os.Args) < 4 {
die("internal remote helper requires a remote name and URL")
}
if err := helper.Run(ctx, os.Args[3], os.Stdin, os.Stdout, os.Stderr); err != nil {
die("%v", err)
}
default:
usage()
os.Exit(2)
}
}
func siteCommand(ctx context.Context, args []string) (err error) {
if len(args) == 0 || args[0] != "publish" {
return fmt.Errorf("usage: dumbforge site publish [--remote <name>] [--branch <name>]")
}
flags := flag.NewFlagSet("site publish", flag.ContinueOnError)
remoteName := flags.String("remote", "origin", "configured Git remote")
branch := flags.String("branch", "", "branch name; defaults to the current branch")
if err := flags.Parse(args[1:]); err != nil {
return err
}
if *branch == "" {
out, err := gitOutput("branch", "--show-current")
if err != nil {
return err
}
*branch = strings.TrimSpace(string(out))
}
if *branch == "" {
return fmt.Errorf("could not determine a branch; pass --branch")
}
pushURLBytes, err := gitOutput("config", "--get", "remote."+*remoteName+".pushurl")
if err != nil {
return fmt.Errorf("remote %s has no dumbforge push URL", *remoteName)
}
spec, err := remoteurl.Parse(strings.TrimSpace(string(pushURLBytes)))
if err != nil {
return err
}
store, err := s3store.New(ctx, spec)
if err != nil {
return err
}
lock, err := store.AcquireLock(ctx)
if err != nil {
return err
}
defer func() {
if releaseErr := lock.Release(context.WithoutCancel(ctx)); err == nil && releaseErr != nil {
err = releaseErr
}
}()
git := gitutil.Git{}
oid, err := git.RevParse(ctx, "refs/heads/"+*branch)
if err != nil {
oid, err = git.RevParse(ctx, "HEAD")
if err != nil {
return err
}
}
metadata, err := publish.LoadMetadata(ctx, store)
if err != nil {
return err
}
owner := spec.Bucket
prefixDir := path.Dir(spec.Prefix)
if prefixDir != "." && prefixDir != "/" {
owner = path.Base(prefixDir)
}
generator, err := site.New(git, spec.PublicRepoURL(), path.Base(spec.Prefix), owner)
if err != nil {
return err
}
generator.Progress = func(format string, args ...any) {
fmt.Printf("dumbforge: "+format+"\n", args...)
}
generator.SetBranches(metadata.BranchNames(), strings.TrimPrefix(metadata.Head, "refs/heads/"))
generator.SetAssetsCurrent(metadata.SiteVersion == generator.AssetVersion())
build, err := generator.BuildBranch(ctx, *branch, "", oid, metadata.Head == "refs/heads/"+*branch)
if err != nil {
return err
}
navigation, err := generator.RepositoryNavigationBuild(nil)
if err != nil {
return err
}
build.Pages = append(build.Pages, navigation.Pages...)
fmt.Printf("dumbforge: generated %d site object(s)\n", len(build.Pages))
if err := lock.Refresh(ctx); err != nil {
return err
}
return generator.Publish(ctx, store, build)
}
func remoteCommand(args []string) error {
if len(args) < 2 || args[0] != "add" {
return fmt.Errorf("usage: dumbforge remote add <name> [options]")
}
name := args[1]
flags := flag.NewFlagSet("remote add", flag.ContinueOnError)
bucket := flags.String("bucket", "", "S3 bucket")
prefix := flags.String("prefix", "", "repository object prefix")
endpoint := flags.String("endpoint", "", "S3-compatible API endpoint")
profile := flags.String("profile", "", "AWS shared-configuration profile")
publicURL := flags.String("public-url", "", "public bucket base URL")
if err := flags.Parse(args[2:]); err != nil {
return err
}
if *prefix == "" {
*prefix = name + ".git"
}
spec := remoteurl.Spec{
Bucket: *bucket,
Prefix: *prefix,
Endpoint: *endpoint,
Profile: *profile,
PublicURL: *publicURL,
}
pushURL, err := remoteurl.Build(spec)
if err != nil {
return err
}
fetchURL := spec.PublicRepoURL()
if fetchURL == "" {
return fmt.Errorf("public URL is required")
}
remoteArgs := []string{"remote", "add"}
if isMirrorRepository() {
remoteArgs = append(remoteArgs, "--mirror=push")
}
remoteArgs = append(remoteArgs, "--", name, fetchURL)
if err := runGit(remoteArgs...); err != nil {
return err
}
if err := runGit("config", "--add", "remote."+name+".pushurl", pushURL); err != nil {
return err
}
fmt.Printf("added %s\n fetch: %s\n push: dumbforge://%s/%s\n", name, fetchURL, spec.Bucket, spec.Prefix)
return nil
}
func isMirrorRepository() bool {
out, err := gitOutput("config", "--type=bool", "--get-regexp", `^remote\..*\.mirror$`)
if err != nil {
return false
}
for _, line := range strings.Split(string(out), "\n") {
fields := strings.Fields(line)
if len(fields) == 2 && fields[1] == "true" {
return true
}
}
return false
}
func runGit(args ...string) error {
// #nosec G204 G702 -- arguments are passed directly to Git without a shell.
cmd := exec.Command("git", args...)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
if err := cmd.Run(); err != nil {
return fmt.Errorf("git %s failed: %w", strings.Join(args, " "), err)
}
return nil
}
func gitOutput(args ...string) ([]byte, error) {
// #nosec G204 -- arguments are passed directly to Git without a shell.
cmd := exec.Command("git", args...)
var stderr strings.Builder
cmd.Stderr = &stderr
out, err := cmd.Output()
if err != nil {
return nil, fmt.Errorf("git %s: %s", strings.Join(args, " "), strings.TrimSpace(stderr.String()))
}
return out, nil
}
func usage() {
fmt.Fprintln(os.Stderr, `dumbforge stores Git repositories in S3-compatible object storage.
Usage:
dumbforge remote add <name> --bucket <bucket> --prefix <repo.git> \
--endpoint <s3-url> --profile <aws-profile> --public-url <https-url>
dumbforge site publish --remote <name> [--branch <name>]
dumbforge version`)
}
func die(format string, args ...any) {
fmt.Fprintf(os.Stderr, "dumbforge: "+format+"\n", args...)
os.Exit(1)
}
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