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package main
import (
"errors"
"fmt"
"log"
"net/http"
"os"
"path"
"path/filepath"
"strings"
"time"
"git.sr.ht/~a73x/home/pages"
"github.com/fsnotify/fsnotify"
"go.uber.org/zap"
)
func Build(directory string) error {
pages, err := pages.Collect(directory)
if err != nil {
return err
}
var errs []error
for _, page := range pages {
fmt.Println("building", page.Path)
err = writeFile(path.Join("public", page.Path), []byte(page.Content))
if err != nil {
errs = append(errs, err)
}
}
if errs != nil {
return errors.Join(errs...)
}
return nil
}
func Serve() error {
logger, err := zap.NewProduction()
if err != nil {
return err
}
loggingMiddleware := func(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
start := time.Now()
next.ServeHTTP(w, r)
logger.Info("request received",
zap.String("url", r.URL.Path),
zap.String("method", r.Method),
zap.Duration("duration", time.Since(start)),
zap.String("user-agent", r.UserAgent()),
)
})
}
mux := http.NewServeMux()
mux.HandleFunc("GET /", serveFile)
server := http.Server{
Addr: ":8080",
Handler: loggingMiddleware(mux),
}
return server.ListenAndServe()
}
func serveFile(w http.ResponseWriter, r *http.Request) {
fsPath := strings.TrimRight(r.URL.Path, "/")
if fsPath == "" {
fsPath = "index"
}
if ext := filepath.Ext(fsPath); ext == "" {
fsPath += ".html"
}
http.ServeFile(w, r, path.Join("public", fsPath))
}
func watchDir(watchDir string) error {
// Directory to watch
// Ensure the directory exists
if _, err := os.Stat(watchDir); os.IsNotExist(err) {
return err
}
// Create a new watcher
watcher, err := fsnotify.NewWatcher()
if err != nil {
return err
}
// Start a goroutine to process events
go func() {
defer watcher.Close()
for {
select {
case event, ok := <-watcher.Events:
if !ok {
return
}
log.Printf("Event: %s", event)
// Trigger a command when a change is detected
if event.Op&fsnotify.Write == fsnotify.Write ||
event.Op&fsnotify.Create == fsnotify.Create ||
event.Op&fsnotify.Remove == fsnotify.Remove {
err := Build(watchDir)
if err != nil {
fmt.Println(err)
} else {
fmt.Println("built")
}
}
case err, ok := <-watcher.Errors:
if !ok {
return
}
log.Printf("Error: %v", err)
}
}
}()
// Add the directory to the watcher
err = filepath.Walk(watchDir, func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
if info.IsDir() {
log.Printf("Watching directory: %s", path)
return watcher.Add(path)
}
return nil
})
if err != nil {
return err
}
return nil
}
func Run() error {
contentDir := "content"
actualPath, err := filepath.EvalSymlinks(contentDir)
if err != nil {
return err
}
if err := Build(actualPath); err != nil {
return err
}
// watcher
if err := watchDir(actualPath); err != nil {
return err
}
if err := Serve(); err != nil {
return err
}
return nil
}
func writeFile(name string, contents []byte) error {
folders := path.Dir(name)
_, err := os.Stat(folders)
if os.IsNotExist(err) {
if err := os.MkdirAll(folders, 0744); err != nil {
return fmt.Errorf("failed to mkdir %s\n%w", folders, err)
}
} else if err != nil {
return fmt.Errorf("failed to stat folder %s\n%w", folders, err)
}
err = os.WriteFile(name, contents, 0666)
if err != nil {
return fmt.Errorf("failed to write file %s\n%w", name, err)
}
return nil
}
func main() {
if err := Run(); err != nil {
log.Panic(err)
}
}
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