Delete empty files and improve entry viewing

TODO.md

@@ -4,10 +4,8 @@ List of things to add to this project
 * Better docs in case others want to use ths for some reason
 * Github/Codeberg/whatever mirror for when `faye` (my server) is offline
 * Improve config and use reflection when loading it
-* Do to other methods what was done to GetDays/GetNotes?
 * API revamp
 * Check export function for improvements
-* Add note creation and deletion to frontend (*properly*)
 * Customise log file
 * More slog.Debug and a debug flag?
 * Consider less clunky auth method

files.go

@@ -32,7 +32,15 @@ func ReadFile(filename string) ([]byte, error) {
 
 // SaveFile Writes request's contents to a file
 func SaveFile(filename string, contents []byte) error {
+	contents = bytes.TrimSpace(contents)
 	filename = "data/" + filename + ".txt"
+	if len(contents) == 0 { // Delete empty files
+		err := os.Remove(filename)
+		slog.Error("error deleting empty file",
+			"error", err,
+			"file", filename)
+		return err
+	}
 	f, err := os.OpenFile(filename, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0644)
 	if err != nil {
 		slog.Error("error opening/making file",
@@ -40,7 +48,7 @@ func SaveFile(filename string, contents []byte) error {
 			"file", filename)
 		return err
 	}
-	if _, err := f.Write(bytes.TrimSpace(contents)); err != nil {
+	if _, err := f.Write(contents); err != nil {
 		slog.Error("error writing to file",
 			"error", err,
 			"file", filename)

routes.go

@@ -131,6 +131,37 @@ func GetNotes(w http.ResponseWriter, r *http.Request) {
 	})
 }
 
+func GetEntry(w http.ResponseWriter, r *http.Request, title string, filename string, editable bool) {
+	entry, err := ReadFile(filename)
+	if err != nil {
+		if editable && errors.Is(err, os.ErrNotExist) {
+			entry = []byte("")
+		} else {
+			slog.Error("error reading entry file", "error", err, "file", filename)
+			InternalError(w, r)
+			return
+		}
+	}
+
+	files := []string{"./pages/base.html"}
+	if editable {
+		files = append(files, "./pages/edit.html")
+	} else {
+		files = append(files, "./pages/entry.html")
+	}
+	ts, err := template.ParseFiles(files...)
+	if err != nil {
+		InternalError(w, r)
+		return
+	}
+
+	err = ts.ExecuteTemplate(w, "base", Entry{Title: title, Content: string(entry)})
+	if err != nil {
+		InternalError(w, r)
+		return
+	}
+}
+
 // GetDay renders HTML page for a specific day entry
 func GetDay(w http.ResponseWriter, r *http.Request) {
 	dayString := chi.URLParam(r, "day")
@@ -139,34 +170,18 @@ func GetDay(w http.ResponseWriter, r *http.Request) {
 		HandleWrite(w.Write([]byte("day not specified")))
 		return
 	}
-	if dayString == time.Now().Format(time.DateOnly) { // today can still be edited
+	if dayString == time.Now().Format(time.DateOnly) { // Today can still be edited
 		http.Redirect(w, r, "/", 302)
 		return
 	}
-	day, err := ReadFile("day/" + dayString)
-	if err != nil {
-		slog.Error("error reading day's file", "error", err, "day", dayString)
-		InternalError(w, r)
-		return
-	}
-
-	files := []string{"./pages/base.html", "./pages/entry.html"}
-	ts, err := template.ParseFiles(files...)
-	if err != nil {
-		InternalError(w, r)
-		return
-	}
 
+	title := dayString
 	t, err := time.Parse(time.DateOnly, dayString)
 	if err == nil { // This is low priority so silently fail
-		dayString = t.Format("02 Jan 2006")
+		title = t.Format("02 Jan 2006")
 	}
 
-	err = ts.ExecuteTemplate(w, "base", Entry{Content: string(day), Title: dayString})
-	if err != nil {
-		InternalError(w, r)
-		return
-	}
+	GetEntry(w, r, title, "day/"+dayString, false)
 }
 
 // GetNote renders HTML page for a note
@@ -177,29 +192,8 @@ func GetNote(w http.ResponseWriter, r *http.Request) {
 		HandleWrite(w.Write([]byte("note not specified")))
 		return
 	}
-	note, err := ReadFile("notes/" + noteString)
-	if err != nil {
-		if errors.Is(err, os.ErrNotExist) {
-			note = []byte("")
-		} else {
-			slog.Error("error reading note's file", "error", err)
-			InternalError(w, r)
-			return
-		}
-	}
 
-	files := []string{"./pages/base.html", "./pages/edit.html"}
-	ts, err := template.ParseFiles(files...)
-	if err != nil {
-		InternalError(w, r)
-		return
-	}
-
-	err = ts.ExecuteTemplate(w, "base", Entry{Title: noteString, Content: string(note)})
-	if err != nil {
-		InternalError(w, r)
-		return
-	}
+	GetEntry(w, r, noteString, "notes/"+noteString, true)
 }
 
 // PostNote saves a note form and redirects back to GET