feat: analysis gen qrcode

pkg/wechat/auth/token.go

@@ -1,8 +1,13 @@
 package auth
 
 import (
+	"context"
+	"crypto/md5"
+	"encoding/hex"
 	"fmt"
+	"time"
 
+	"lone-services/pkg/redis"
 	"lone-services/pkg/utils"
 
 	jsoniter "github.com/json-iterator/go"
@@ -17,10 +22,21 @@ type AccessTokenResult struct {
 	ErrMsg      string `json:"errmsg"`
 }
 
-func (c *Client) AccessToken() (*AccessTokenResult, error) {
+func (c *Client) AccessToken(ctx context.Context) (*AccessTokenResult, error) {
 	if c == nil || c.AppID == utils.StringEmpty || c.Secret == utils.StringEmpty {
 		return nil, fmt.Errorf("wechat app config missing")
 	}
+	if ctx == nil {
+		ctx = context.Background()
+	}
+
+	secretMd5 := md5.Sum([]byte(c.Secret))
+	key := fmt.Sprintf("wechat:access_token:%s:%s", c.AppID, hex.EncodeToString(secretMd5[:])[:8])
+
+	token, err := redis.Client.Get(ctx, key).Result()
+	if err == nil && token != utils.StringEmpty {
+		return &AccessTokenResult{AccessToken: token}, nil
+	}
 
 	body, err := utils.Curl(accessTokenURL).SetData(map[string]string{
 		"grant_type": "client_credential",
@@ -41,5 +57,10 @@ func (c *Client) AccessToken() (*AccessTokenResult, error) {
 	if result.AccessToken == utils.StringEmpty {
 		return nil, fmt.Errorf("wechat access_token empty")
 	}
+
+	expire := time.Duration(result.ExpiresIn-300) * time.Second
+	if expire > 0 {
+		_ = redis.Client.Set(ctx, key, result.AccessToken, expire).Err()
+	}
 	return &result, nil
 }