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package cli
import (
"archive/zip"
"bufio"
"compress/flate"
"io"
"io/fs"
"os"
"os/exec"
"path/filepath"
"runtime"
"time"
tea "github.com/charmbracelet/bubbletea"
"github.com/hachem-wtf/benson/internal/config"
)
func runMerge(m *model) tea.Cmd {
m.busy = true
ch := make(chan tea.Msg, 256)
m.events = ch
cfg := m.cfg
go mergeWorker(cfg, ch)
return tea.Batch(m.spin.Tick, waitForEvent(ch))
}
func mergeWorker(cfg *config.Config, ch chan<- tea.Msg) {
emit := func(s string) { ch <- streamMsg{s} }
done := func(s string) { ch <- streamDoneMsg{s} }
if cfg.ServerLocation == "" || cfg.BackupLocation == "" {
done(errorStyle.Render("server_location and backup_location must be set in config."))
return
}
if _, err := os.Stat(serverDir); err != nil {
done(errorStyle.Render("No generated files found. Run 'generate' first."))
return
}
emit(headingStyle.Render("Merging generated server"))
if cfg.MergePreCommand != "" {
emit(mutedStyle.Render("Running pre-merge command…"))
if err := runShellCommand(cfg.MergePreCommand, emit); err != nil {
emit(warnStyle.Render(" pre-command exited: " + err.Error()))
}
}
if _, err := os.Stat(cfg.ServerLocation); err == nil {
emit(mutedStyle.Render("Backing up " + cfg.ServerLocation + "…"))
name, err := createBackup(cfg.ServerLocation, cfg.BackupLocation)
if err != nil {
done(errorStyle.Render("Failed to create backup: " + err.Error()))
return
}
emit(" " + successStyle.Render("✓ ") + name)
} else {
emit(mutedStyle.Render("Server location doesn't exist, creating it…"))
if err := os.MkdirAll(cfg.ServerLocation, 0o755); err != nil {
done(errorStyle.Render("Failed to create server location: " + err.Error()))
return
}
}
emit(mutedStyle.Render("Moving generated files into place…"))
entries, err := os.ReadDir(serverDir)
if err != nil {
done(errorStyle.Render("Failed to read generated directory: " + err.Error()))
return
}
for _, e := range entries {
src := filepath.Join(serverDir, e.Name())
dst := filepath.Join(cfg.ServerLocation, e.Name())
os.RemoveAll(dst)
if err := movePath(src, dst); err != nil {
done(errorStyle.Render("Failed to move " + e.Name() + ": " + err.Error()))
return
}
emit(" " + successStyle.Render("moved ") + e.Name())
}
os.RemoveAll(serverDir)
emit(successStyle.Render("Merge complete."))
if cfg.MergePostCommand != "" {
emit(mutedStyle.Render("Running post-merge command…"))
if err := runShellCommand(cfg.MergePostCommand, emit); err != nil {
emit(warnStyle.Render(" post-command exited: " + err.Error()))
}
}
done("")
}
func createBackup(sourceDir, backupDir string) (string, error) {
if err := os.MkdirAll(backupDir, 0o755); err != nil {
return "", err
}
name := "backup_" + time.Now().Format("2006-01-02_15-04-05") + ".zip"
f, err := os.Create(filepath.Join(backupDir, name))
if err != nil {
return "", err
}
defer f.Close()
zw := zip.NewWriter(f)
zw.RegisterCompressor(zip.Deflate, func(out io.Writer) (io.WriteCloser, error) {
return flate.NewWriter(out, flate.BestCompression)
})
walkErr := filepath.WalkDir(sourceDir, func(path string, d fs.DirEntry, err error) error {
if err != nil {
return err
}
if d.IsDir() {
return nil
}
rel, err := filepath.Rel(sourceDir, path)
if err != nil {
return err
}
w, err := zw.Create(filepath.ToSlash(rel))
if err != nil {
return err
}
src, err := os.Open(path)
if err != nil {
return err
}
defer src.Close()
_, err = io.Copy(w, src)
return err
})
if walkErr != nil {
zw.Close()
return "", walkErr
}
if err := zw.Close(); err != nil {
return "", err
}
return name, nil
}
func runShellCommand(command string, emit func(string)) error {
var cmd *exec.Cmd
if runtime.GOOS == "windows" {
cmd = exec.Command("cmd", "/C", command)
} else {
cmd = exec.Command("sh", "-c", command)
}
pr, pw, err := os.Pipe()
if err != nil {
return err
}
cmd.Stdout = pw
cmd.Stderr = pw
if err := cmd.Start(); err != nil {
pw.Close()
return err
}
pw.Close()
scanner := bufio.NewScanner(pr)
scanner.Buffer(make([]byte, 0, 64*1024), 1024*1024)
for scanner.Scan() {
emit(mutedStyle.Render(" │ " + scanner.Text()))
}
return cmd.Wait()
}
func movePath(src, dst string) error {
if err := os.Rename(src, dst); err == nil {
return nil
}
info, err := os.Stat(src)
if err != nil {
return err
}
if info.IsDir() {
if err := copyDir(src, dst); err != nil {
return err
}
} else if err := copyFile(src, dst, info.Mode()); err != nil {
return err
}
return os.RemoveAll(src)
}
func copyDir(src, dst string) error {
if err := os.MkdirAll(dst, 0o755); err != nil {
return err
}
entries, err := os.ReadDir(src)
if err != nil {
return err
}
for _, e := range entries {
s := filepath.Join(src, e.Name())
d := filepath.Join(dst, e.Name())
if e.IsDir() {
if err := copyDir(s, d); err != nil {
return err
}
continue
}
info, err := e.Info()
if err != nil {
return err
}
if err := copyFile(s, d, info.Mode()); err != nil {
return err
}
}
return nil
}
func copyFile(src, dst string, mode os.FileMode) error {
in, err := os.Open(src)
if err != nil {
return err
}
defer in.Close()
out, err := os.OpenFile(dst, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, mode)
if err != nil {
return err
}
defer out.Close()
_, err = io.Copy(out, in)
return err
}
|
