added sections overview

pkg/db/page.go

@@ -8,6 +8,7 @@ import (
 	"git.giftfish.de/ston1th/gowiki/pkg/render"
 	"git.giftfish.de/ston1th/gowiki/pkg/store"
 	"sort"
+	"strings"
 )
 
 const pagePrefix = "page/"
@@ -21,9 +22,42 @@ var (
 	errDeleteIndexPage    = errors.New("db: index page can not be deleted")
 )
 
-func (db *DB) GetAllPages(username string) (pages core.Pages) {
+func (db *DB) GetAllSections(username string) (sections core.Sections) {
+	m := make(map[string]core.UpdatedPages)
 	db.store.ForEach(func(k string, _ []byte) error {
 		if trim, ok := hasTrimPrefix(k, pagePrefix); ok {
+			if trim == core.IndexURI {
+				return nil
+			}
+			p, err := db.getPage(trim, username)
+			if err == nil {
+				s := trim[:strings.Index(trim, "/")]
+				if _, ok := m[s]; !ok {
+					m[s] = core.UpdatedPages{}
+				}
+				m[s] = append(m[s], *p)
+			}
+		}
+		return nil
+	})
+	for s, p := range m {
+		sort.Sort(p)
+		l := len(p)
+		if l > 5 {
+			l = 5
+		}
+		sections = append(sections, core.Section{s, p[:l]})
+	}
+	sort.Sort(sections)
+	return
+}
+
+func (db *DB) GetAllSectionPages(section, username string) (pages core.Pages, err error) {
+	db.store.ForEach(func(k string, _ []byte) error {
+		if trim, ok := hasTrimPrefix(k, pagePrefix); ok {
+			if !strings.HasPrefix(trim, section+"/") {
+				return nil
+			}
 			if trim == core.IndexURI {
 				return nil
 			}
@@ -34,6 +68,10 @@ func (db *DB) GetAllPages(username string) (pages core.Pages) {
 		}
 		return nil
 	})
+	if len(pages) == 0 {
+		err = errPageNotFound
+		return
+	}
 	sort.Sort(pages)
 	return
 }