From e697e09050e2deed60159b864d50ea2b4de8bcbb Mon Sep 17 00:00:00 2001
From: zijiren233 <pyh1670605849@gmail.com>
Date: Thu, 19 Oct 2023 23:59:17 +0800
Subject: [PATCH] Feat: use hash version

---
 internal/op/room.go  | 3 ++-
 internal/op/rooms.go | 4 ++--
 internal/op/user.go  | 4 +++-
 internal/op/users.go | 5 +++--
 4 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/internal/op/room.go b/internal/op/room.go
index c9fa202..a6b3c90 100644
--- a/internal/op/room.go
+++ b/internal/op/room.go
@@ -2,6 +2,7 @@ package op
 
 import (
 	"errors"
+	"hash/crc32"
 	"net/url"
 	"sync/atomic"
 	"time"
@@ -298,7 +299,7 @@ func (r *Room) SetPassword(password string) error {
 		if err != nil {
 			return err
 		}
-		atomic.AddUint32(&r.version, 1)
+		atomic.StoreUint32(&r.version, crc32.ChecksumIEEE(hashedPassword))
 	}
 	r.HashedPassword = hashedPassword
 	return db.SetRoomHashedPassword(r.ID, hashedPassword)
diff --git a/internal/op/rooms.go b/internal/op/rooms.go
index 48b1ca5..5945b28 100644
--- a/internal/op/rooms.go
+++ b/internal/op/rooms.go
@@ -2,7 +2,7 @@ package op
 
 import (
 	"errors"
-	"math/rand"
+	"hash/crc32"
 	"sync/atomic"
 
 	"github.com/synctv-org/synctv/internal/db"
@@ -31,7 +31,7 @@ func WithVersion(version uint32) RoomConf {
 func initRoom(room *model.Room, conf ...RoomConf) (*Room, error) {
 	r := &Room{
 		Room:    *room,
-		version: rand.Uint32(),
+		version: crc32.ChecksumIEEE(room.HashedPassword),
 		current: newCurrent(),
 	}
 	for _, c := range conf {
diff --git a/internal/op/user.go b/internal/op/user.go
index 4b12c7f..e6398b2 100644
--- a/internal/op/user.go
+++ b/internal/op/user.go
@@ -2,6 +2,7 @@ package op
 
 import (
 	"errors"
+	"hash/crc32"
 	"sync/atomic"
 
 	"github.com/synctv-org/synctv/internal/db"
@@ -62,6 +63,7 @@ func (u *User) SetPassword(password string) error {
 		}
 	}
 	u.HashedPassword = hashedPassword
-	atomic.AddUint32(&u.version, 1)
+
+	atomic.StoreUint32(&u.version, crc32.ChecksumIEEE(u.HashedPassword))
 	return db.SetUserHashedPassword(u.ID, hashedPassword)
 }
diff --git a/internal/op/users.go b/internal/op/users.go
index 3ffb610..94faded 100644
--- a/internal/op/users.go
+++ b/internal/op/users.go
@@ -1,6 +1,7 @@
 package op
 
 import (
+	"hash/crc32"
 	"time"
 
 	"github.com/bluele/gcache"
@@ -26,7 +27,7 @@ func GetUserById(id uint) (*User, error) {
 
 	u2 := &User{
 		User:    *u,
-		version: 1,
+		version: crc32.ChecksumIEEE(u.HashedPassword),
 	}
 
 	return u2, userCache.SetWithExpire(id, u2, time.Hour)
@@ -64,7 +65,7 @@ func CreateUser(username, password string) (*User, error) {
 
 	u2 := &User{
 		User:    *u,
-		version: 1,
+		version: crc32.ChecksumIEEE(u.HashedPassword),
 	}
 
 	return u2, userCache.SetWithExpire(u.ID, u2, time.Hour)