Refactor server routes

internal/server/routes/entries.go

@@ -0,0 +1,80 @@
+package routes
+
+import (
+	"errors"
+	"html/template"
+	"log/slog"
+	"net/http"
+	"os"
+
+	"git.a71.su/Andrew71/hibiscus-txt/internal/files"
+	"git.a71.su/Andrew71/hibiscus-txt/internal/templates"
+)
+
+type EntryList struct {
+	Title       string
+	Description template.HTML
+	Entries     []Entry
+}
+
+type Entry struct {
+	Title   string
+	Content string
+	Link    string
+}
+
+type formatEntries func([]string) []Entry
+
+// getEntries handles showing a list.
+func getEntries(w http.ResponseWriter, r *http.Request, title string, description template.HTML, dir string, format formatEntries) {
+	filesList, err := files.List(dir)
+	if err != nil {
+		slog.Error("error reading file list", "directory", dir, "error", err)
+		InternalError(w, r)
+		return
+	}
+	var filesFormatted = format(filesList)
+
+	err = templates.List.ExecuteTemplate(w, "base", EntryList{Title: title, Description: description, Entries: filesFormatted})
+	if err != nil {
+		slog.Error("error executing template", "error", err)
+		InternalError(w, r)
+		return
+	}
+}
+
+// getEntry handles showing a single file, editable or otherwise.
+func getEntry(w http.ResponseWriter, r *http.Request, title string, filename string, editable bool) {
+	entry, err := files.Read(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
+		}
+	}
+
+	if editable {
+		err = templates.Edit.ExecuteTemplate(w, "base", Entry{Title: title, Content: string(entry)})
+	} else {
+		err = templates.View.ExecuteTemplate(w, "base", Entry{Title: title, Content: string(entry)})
+	}
+	if err != nil {
+		InternalError(w, r)
+		return
+	}
+}
+
+// postEntry saves value of "text" HTML form component to a file and redirects back to Referer if present.
+func postEntry(filename string, w http.ResponseWriter, r *http.Request) {
+	err := files.Save(filename, []byte(r.FormValue("text")))
+	if err != nil {
+		slog.Error("error saving file", "error", err, "file", filename)
+	}
+	if r.Referer() != "" {
+		http.Redirect(w, r, r.Header.Get("Referer"), http.StatusFound)
+		return
+	}
+}