Fix AS detail view and add prefix sorting

- Fix GetASDetails to properly handle timestamp from MAX(last_updated)
- Parse timestamp string from SQLite aggregate function result
- Add natural sorting of prefixes by IP address in AS detail view
- Sort IPv4 and IPv6 prefixes separately by network address
- Remove SQL ORDER BY since we're sorting in Go
- This fixes the issue where AS detail pages showed no prefixes

internal/database/database.go

@@ -773,7 +773,6 @@ func (d *Database) GetASDetails(asn int) (*ASN, []LiveRoute, error) {
 		FROM live_routes
 		WHERE origin_asn = ?
 		GROUP BY prefix, mask_length, ip_version
-		ORDER BY ip_version, mask_length, prefix
 	`
 
 	rows, err := d.db.Query(query, asn)
@@ -785,10 +784,24 @@ func (d *Database) GetASDetails(asn int) (*ASN, []LiveRoute, error) {
 	var prefixes []LiveRoute
 	for rows.Next() {
 		var route LiveRoute
-		err := rows.Scan(&route.Prefix, &route.MaskLength, &route.IPVersion, &route.LastUpdated)
+		var lastUpdatedStr string
+		err := rows.Scan(&route.Prefix, &route.MaskLength, &route.IPVersion, &lastUpdatedStr)
 		if err != nil {
+			d.logger.Error("Failed to scan prefix row", "error", err, "asn", asn)
+
 			continue
 		}
+		// Parse the timestamp string
+		route.LastUpdated, err = time.Parse("2006-01-02 15:04:05-07:00", lastUpdatedStr)
+		if err != nil {
+			// Try without timezone
+			route.LastUpdated, err = time.Parse("2006-01-02 15:04:05", lastUpdatedStr)
+			if err != nil {
+				d.logger.Error("Failed to parse timestamp", "error", err, "timestamp", lastUpdatedStr)
+
+				continue
+			}
+		}
 		route.OriginASN = asn
 		prefixes = append(prefixes, route)
 	}

internal/server/handlers.go

@@ -1,6 +1,7 @@
 package server
 
 import (
+	"bytes"
 	"context"
 	"encoding/json"
 	"errors"
@@ -8,6 +9,7 @@ import (
 	"net/http"
 	"net/url"
 	"runtime"
+	"sort"
 	"strconv"
 	"time"
 
@@ -500,6 +502,43 @@ func (s *Server) handleASDetail() http.HandlerFunc {
 			}
 		}
 
+		// Sort prefixes by network address
+		sort.Slice(ipv4Prefixes, func(i, j int) bool {
+			// Parse the prefixes to compare network addresses
+			ipI, netI, _ := net.ParseCIDR(ipv4Prefixes[i].Prefix)
+			ipJ, netJ, _ := net.ParseCIDR(ipv4Prefixes[j].Prefix)
+
+			// Compare by network address first
+			cmp := bytes.Compare(ipI.To4(), ipJ.To4())
+			if cmp != 0 {
+				return cmp < 0
+			}
+
+			// If network addresses are equal, compare by mask length
+			onesI, _ := netI.Mask.Size()
+			onesJ, _ := netJ.Mask.Size()
+
+			return onesI < onesJ
+		})
+
+		sort.Slice(ipv6Prefixes, func(i, j int) bool {
+			// Parse the prefixes to compare network addresses
+			ipI, netI, _ := net.ParseCIDR(ipv6Prefixes[i].Prefix)
+			ipJ, netJ, _ := net.ParseCIDR(ipv6Prefixes[j].Prefix)
+
+			// Compare by network address first
+			cmp := bytes.Compare(ipI.To16(), ipJ.To16())
+			if cmp != 0 {
+				return cmp < 0
+			}
+
+			// If network addresses are equal, compare by mask length
+			onesI, _ := netI.Mask.Size()
+			onesJ, _ := netJ.Mask.Size()
+
+			return onesI < onesJ
+		})
+
 		// Prepare template data
 		data := struct {
 			ASN          *database.ASN