first commit

internal/redisdao/auth.go

@@ -0,0 +1,122 @@
+package redisdao
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"git.lzcwy.cn/zhengchiliu/zt-closet-backend/global"
+	"git.lzcwy.cn/zhengchiliu/zt-closet-backend/internal/redismodel"
+	"github.com/redis/go-redis/v9"
+)
+
+// authTokenSAddScript 向用户 token 集合加入 refresh_token，仅在集合由空变为非空时设置 TTL，
+// 避免每次登录都刷新集合 TTL 导致旧 token 条目长期驻留。
+const authTokenSAddScript = `
+local added = redis.call('SADD', KEYS[1], ARGV[1])
+if added == 1 and redis.call('SCARD', KEYS[1]) == 1 then
+  redis.call('EXPIRE', KEYS[1], ARGV[2])
+end
+return added
+`
+
+// AuthTokenSet 登录成功后写入会话：
+//   - access_token -> user_id
+//   - refresh_token -> user_id
+//   - user_id 的 token 集合加入 refresh_token（用于多端管理 / 登出）
+func AuthTokenSet(ctx context.Context, userID int64, accessToken, refreshToken string) error {
+	ctx, span := global.Tracer.Start(ctx, "redisdao.AuthTokenSet")
+	defer span.End()
+
+	accessKey := fmt.Sprintf(redismodel.KeyAuthAccess, accessToken)
+	refreshKey := fmt.Sprintf(redismodel.KeyAuthRefresh, refreshToken)
+	userTokensKey := fmt.Sprintf(redismodel.KeyAuthUserTokens, userID)
+
+	accessTTL := time.Duration(global.JWTSetting.AccessTokenExpire) * time.Second
+	refreshTTL := time.Duration(global.JWTSetting.RefreshTokenExpire) * time.Second
+
+	pipe := global.RedisEngine.TxPipeline()
+	pipe.Set(ctx, accessKey, userID, accessTTL)
+	pipe.Set(ctx, refreshKey, userID, refreshTTL)
+	pipe.Eval(ctx, authTokenSAddScript, []string{userTokensKey}, refreshToken, int(refreshTTL.Seconds()))
+	if _, err := pipe.Exec(ctx); err != nil {
+		span.RecordError(err)
+		return err
+	}
+	return nil
+}
+
+// AuthTokenDel 登出/失效：删除 access、refresh 映射，并从用户 token 集合移除 refresh_token
+func AuthTokenDel(ctx context.Context, userID int64, accessToken, refreshToken string) error {
+	ctx, span := global.Tracer.Start(ctx, "redisdao.AuthTokenDel")
+	defer span.End()
+
+	accessKey := fmt.Sprintf(redismodel.KeyAuthAccess, accessToken)
+	refreshKey := fmt.Sprintf(redismodel.KeyAuthRefresh, refreshToken)
+	userTokensKey := fmt.Sprintf(redismodel.KeyAuthUserTokens, userID)
+
+	pipe := global.RedisEngine.TxPipeline()
+	pipe.Del(ctx, accessKey)
+	pipe.Del(ctx, refreshKey)
+	pipe.SRem(ctx, userTokensKey, refreshToken)
+	if _, err := pipe.Exec(ctx); err != nil {
+		span.RecordError(err)
+		return err
+	}
+	return nil
+}
+
+// AuthUserIDByAccess 通过 access token 查询 user_id，token 不存在或已过期返回 redis.Nil
+func AuthUserIDByAccess(ctx context.Context, accessToken string) (int64, error) {
+	ctx, span := global.Tracer.Start(ctx, "redisdao.AuthUserIDByAccess")
+	defer span.End()
+
+	key := fmt.Sprintf(redismodel.KeyAuthAccess, accessToken)
+	userID, err := global.RedisEngine.Get(ctx, key).Int64()
+	if err != nil && err != redis.Nil {
+		span.RecordError(err)
+	}
+	return userID, err
+}
+
+// AuthUserIDByRefresh 通过 refresh token 查询 user_id，token 不存在或已过期返回 redis.Nil
+func AuthUserIDByRefresh(ctx context.Context, refreshToken string) (int64, error) {
+	ctx, span := global.Tracer.Start(ctx, "redisdao.AuthUserIDByRefresh")
+	defer span.End()
+
+	key := fmt.Sprintf(redismodel.KeyAuthRefresh, refreshToken)
+	userID, err := global.RedisEngine.Get(ctx, key).Int64()
+	if err != nil && err != redis.Nil {
+		span.RecordError(err)
+	}
+	return userID, err
+}
+
+// sessionKeyTTL session_key 缓存时长（30 天，与微信 session_key 有效期对齐）。
+const sessionKeyTTL = 30 * 24 * time.Hour
+
+// AuthSessionKeySet 写入用户的 session_key（登录时 code2session 返回，用于虚拟支付 signature 计算）。
+func AuthSessionKeySet(ctx context.Context, userID int64, sessionKey string) error {
+	ctx, span := global.Tracer.Start(ctx, "redisdao.AuthSessionKeySet")
+	defer span.End()
+
+	key := fmt.Sprintf(redismodel.KeyAuthSessionKey, userID)
+	if err := global.RedisEngine.Set(ctx, key, sessionKey, sessionKeyTTL).Err(); err != nil {
+		span.RecordError(err)
+		return err
+	}
+	return nil
+}
+
+// AuthSessionKeyGet 读取用户的 session_key，不存在返回 redis.Nil。
+func AuthSessionKeyGet(ctx context.Context, userID int64) (string, error) {
+	ctx, span := global.Tracer.Start(ctx, "redisdao.AuthSessionKeyGet")
+	defer span.End()
+
+	key := fmt.Sprintf(redismodel.KeyAuthSessionKey, userID)
+	sessionKey, err := global.RedisEngine.Get(ctx, key).Result()
+	if err != nil && err != redis.Nil {
+		span.RecordError(err)
+	}
+	return sessionKey, err
+}