feat(ipinfo): support GeoIP (#26)

Co-authored-by: E99p1ant <[email protected]>

internal/ipinfo/qqwry/wry.go

@@ -0,0 +1,66 @@
+package qqwry
+
+import (
+	"os"
+	"sync"
+	"time"
+
+	"github.com/sinlov/qqwry-golang/qqwry"
+	log "unknwon.dev/clog/v2"
+)
+
+type Database struct {
+	wry *qqwry.QQwry
+}
+
+// Area returns IpArea according to ip
+func (db *Database) Area(ip string) string {
+	defer func() {
+		_ = recover()
+	}()
+	if db.wry == nil {
+		return ""
+	}
+	ipData := db.wry.SearchByIPv4(ip)
+	if ipData.Area == " CZ88.NET" {
+		return ipData.Country
+	}
+	return ipData.Country + " " + ipData.Area
+}
+
+var wry *qqwry.QQwry
+var once sync.Once
+
+func checkUpdate() {
+	info, err := os.Stat("qqwry.dat")
+	if err != nil {
+		if os.IsNotExist(err) {
+			err := download()
+			if err != nil {
+				log.Warn("Download qqwry.dat failed, caused by:%v, recommend to download it by yourself otherwise the `IpArea` will be null", err)
+			}
+		}
+	} else if -time.Until(info.ModTime()) > 7*24*time.Hour {
+		log.Info("Updating qqwry.dat...")
+		err := download()
+		if err != nil {
+			log.Warn("Update qqwry.dat failed, please download qqwry.dat by yourself")
+		}
+	}
+}
+
+func New() *Database {
+	once.Do(func() {
+		checkUpdate()
+		qqwry.DatData.FilePath = "qqwry.dat"
+		init := qqwry.DatData.InitDatFile()
+		if v, ok := init.(error); ok {
+			if v != nil {
+				log.Warn("qqwry init failed")
+				wry = nil
+			}
+		}
+		wry = qqwry.NewQQwry()
+	})
+	return &Database{wry: wry}
+}