Reorganize directory structures

Signed-off-by: Sean Du <do4suki@gmail.com>

pkg/db/db.go

@@ -0,0 +1,63 @@
+package db
+
+import (
+	"fmt"
+	"honoka-chan/pkg/utils"
+	"os"
+
+	_ "modernc.org/sqlite"
+	"xorm.io/xorm"
+)
+
+var (
+	DB *Instance
+
+	ExampleDb = "assets/data.example.db"
+	MainDb    = "assets/main.db"
+	UserDb    = "assets/data.db"
+	MainEng   *xorm.Engine
+	UserEng   *xorm.Engine
+)
+
+func init() {
+	DB = GetInstance()
+
+	_, err := os.Stat(UserDb)
+	if err != nil {
+		utils.WriteAllText(UserDb, utils.ReadAllText(ExampleDb))
+	}
+
+	eng, err := xorm.NewEngine("sqlite", MainDb)
+	if err != nil {
+		panic(err)
+	}
+	err = eng.Ping()
+	if err != nil {
+		panic(err)
+	}
+	eng.SetMaxOpenConns(10)
+	eng.SetMaxIdleConns(5)
+	MainEng = eng
+
+	eng, err = xorm.NewEngine("sqlite", UserDb)
+	if err != nil {
+		panic(err)
+	}
+	err = eng.Ping()
+	if err != nil {
+		panic(err)
+	}
+	eng.SetMaxOpenConns(10)
+	eng.SetMaxIdleConns(5)
+	UserEng = eng
+}
+
+func MatchTokenUid(token, uid string) bool {
+	res, err := DB.Get([]byte(uid))
+	if err != nil {
+		fmt.Println(err)
+		return false
+	}
+
+	return string(res) == token
+}