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package main
import (
"context"
"log"
"log/slog"
"os"
"path/filepath"
"strings"
"time"
"github.com/bep/debounce"
"gopkg.in/fsnotify.v1"
"xeiaso.net/v4/internal/lume"
)
// foo bar
var (
ignoredDirs = []string{"_site", "_data", "_bin", "blog/series", "static/resume", "#", "deno.lock"}
)
func findDirectories(root string) ([]string, error) {
var dirs []string
err := filepath.Walk(root, func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
if info.IsDir() {
dirs = append(dirs, path)
}
return nil
})
if err != nil {
return nil, err
}
return dirs, nil
}
func filterDirectory(dir string, filterRules []string) bool {
for _, rule := range filterRules {
if strings.Contains(dir, rule) {
return true
}
}
return false
}
func rebuildOnChange(fs *lume.FS) {
watcher, err := fsnotify.NewWatcher()
if err != nil {
log.Fatal(err)
}
defer watcher.Close()
reload := func() {
slog.Info("reloading")
if err := fs.Update(context.Background()); err != nil {
slog.Error("reload failed", "err", err)
}
}
d := debounce.New(100 * time.Millisecond)
if err = watcher.Add("./lume"); err != nil {
log.Fatal(err)
}
dirs, err := findDirectories("./lume")
if err != nil {
log.Fatal(err)
}
for _, dir := range dirs {
if filterDirectory(dir, ignoredDirs) {
continue
}
slog.Debug("adding dir", "dir", dir)
if err = watcher.Add(dir); err != nil {
log.Fatal(err)
}
}
for {
select {
case event := <-watcher.Events:
if filterDirectory(event.Name, ignoredDirs) {
continue
}
if event.Op == fsnotify.Chmod {
continue
}
slog.Debug("got event", "fname", event.Name, "op", event.Op.String())
d(reload)
case err := <-watcher.Errors:
log.Fatal(err)
}
}
}
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