work on loading tags

tags/tags.go

@@ -3,6 +3,9 @@ package tags
 import (
     "database/sql"	
 	_ "github.com/lib/pq"
+	"fmt"
+	"strings"
+	"strconv"
 )
 
 type Tag struct {
@@ -13,6 +16,32 @@ type Tag struct {
 
 var Tags map[int]*Tag
 
-func LoadTags(DB *sql.DB) {
+func LoadTags(db *sql.DB) {
+   	rows, err := db.Query("select tag_id, name, parent_id, array_agg(distinct(parent_of.tag_id)) from tags join tags as parent_of on tags.parent_id=parent_of.tag_id group by tags.tag_id")
     	
+		
+	for rows.Next() {
+		tag := &Tag{Children: nil}
+
+		var children sql.NullString
+		var tag_id int
+		err = rows.Scan(&tag_id, &tag.Name, &tag.Name, &tag.Parent, &children)
+		if err != nil {
+			fmt.Println("tags DB Error: ", err)
+		}
+		
+		if children.Valid {
+			var childrenStr = children.String[1 : len(children.String)-1]
+			if childrenStr != "NULL" {
+				pids := strings.Split(childrenStr, ",")
+				for _, spid := range pids {
+					pid, _ := strconv.Atoi(spid)
+					
+					tags.C
+				}	
+			}
+		}
+
+		tags[tag_d] = tag
+	}
 }