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|
package cms
import (
"fmt"
"io/fs"
"os"
"path/filepath"
"strings"
)
func CreateMenu(root, name string) (string, error) {
name = slugify(name)
if name == "" || name == "untitled" {
return "", fmt.Errorf("menu name is required")
}
path := filepath.Join(root, "site/menus", name+".toml")
data := "name = " + formatString(name) + "\n\n"
return path, writeNewFile(path, []byte(data))
}
func LoadMenus(root string) (map[string]Menu, error) {
dir := filepath.Join(root, "site/menus")
menus := map[string]Menu{}
if _, err := os.Stat(dir); err != nil {
if os.IsNotExist(err) {
return menus, nil
}
return nil, err
}
err := filepath.WalkDir(dir, func(path string, entry fs.DirEntry, err error) error {
if err != nil {
return err
}
if entry.IsDir() || filepath.Ext(path) != ".toml" {
return nil
}
menu, err := loadMenu(path)
if err != nil {
return err
}
menus[menu.Name] = menu
return nil
})
return menus, err
}
func AddMenuItem(root string, opts MenuItemOptions) error {
name := slugify(opts.Menu)
if name == "" || name == "untitled" {
return fmt.Errorf("menu name is required")
}
path := filepath.Join(root, "site/menus", name+".toml")
menu, err := loadMenu(path)
if err != nil {
if os.IsNotExist(err) {
if _, createErr := CreateMenu(root, name); createErr != nil {
return createErr
}
menu = Menu{Name: name}
} else {
return err
}
}
item, err := resolveMenuItem(opts)
if err != nil {
return err
}
menu.Items = append(menu.Items, item)
return saveMenu(path, menu)
}
func loadMenu(path string) (Menu, error) {
data, err := os.ReadFile(path)
if err != nil {
return Menu{}, err
}
menu := Menu{Name: strings.TrimSuffix(filepath.Base(path), filepath.Ext(path))}
var current *MenuItem
for lineNo, raw := range strings.Split(string(data), "\n") {
line := strings.TrimSpace(raw)
if line == "" || strings.HasPrefix(line, "#") {
continue
}
if line == "[[items]]" {
menu.Items = append(menu.Items, MenuItem{})
current = &menu.Items[len(menu.Items)-1]
continue
}
key, rawValue, ok := strings.Cut(line, "=")
if !ok {
return Menu{}, fmt.Errorf("%s:%d: expected key = value", path, lineNo+1)
}
value, err := parseScalar(strings.TrimSpace(rawValue))
if err != nil {
return Menu{}, fmt.Errorf("%s:%d: %w", path, lineNo+1, err)
}
key = strings.TrimSpace(key)
if current == nil {
if key == "name" {
menu.Name = value
}
continue
}
switch key {
case "label":
current.Label = value
case "url":
current.URL = value
}
}
if menu.Name == "" {
menu.Name = strings.TrimSuffix(filepath.Base(path), filepath.Ext(path))
}
return menu, nil
}
func saveMenu(path string, menu Menu) error {
var b strings.Builder
b.WriteString("name = " + formatString(menu.Name) + "\n")
for _, item := range menu.Items {
b.WriteString("\n[[items]]\n")
b.WriteString("label = " + formatString(item.Label) + "\n")
b.WriteString("url = " + formatString(item.URL) + "\n")
}
return writeFile(path, []byte(b.String()))
}
func resolveMenuItem(opts MenuItemOptions) (MenuItem, error) {
label := opts.Label
url := opts.URL
target := slugify(opts.Target)
switch opts.Kind {
case "home":
if label == "" {
label = "Home"
}
if url == "" {
url = "/"
}
case "page":
if target == "" || target == "untitled" {
return MenuItem{}, fmt.Errorf("page menu item requires a target")
}
if label == "" {
label = titleize(target)
}
if url == "" {
if target == "index" {
url = "/"
} else {
url = "/" + target + ".gmi"
}
}
case "section":
if target == "" || target == "untitled" {
return MenuItem{}, fmt.Errorf("section menu item requires a target")
}
if label == "" {
label = titleize(target)
}
if url == "" {
url = "/" + target + "/"
}
case "article":
if target == "" || target == "untitled" {
return MenuItem{}, fmt.Errorf("article menu item requires a target")
}
if label == "" {
label = titleize(target)
}
if url == "" {
url = "/articles/" + target + ".gmi"
}
case "custom":
if label == "" {
label = titleize(target)
}
if url == "" {
return MenuItem{}, fmt.Errorf("custom menu item requires --url")
}
default:
if label == "" {
label = titleize(opts.Kind)
}
if url == "" {
url = "/" + slugify(opts.Kind) + ".gmi"
}
}
return MenuItem{Label: label, URL: url}, nil
}
|
