refactor mj service, add mj service pool support

api/service/mj/pool.go

@@ -0,0 +1,38 @@
+package mj
+
+import (
+	"chatplus/core/types"
+	"chatplus/service/oss"
+	"chatplus/store"
+	"github.com/go-redis/redis/v8"
+	"gorm.io/gorm"
+)
+
+// ServicePool Mj service pool
+type ServicePool struct {
+	services  []Service
+	taskQueue *store.RedisQueue
+}
+
+func NewServicePool(db *gorm.DB, redisCli *redis.Client, manager *oss.UploaderManager, appConfig *types.AppConfig) *ServicePool {
+	// create mj client and service
+	for _, config := range appConfig.MjConfigs {
+		if config.Enabled == false {
+			continue
+		}
+		// create mj client
+		client := NewClient(&config, appConfig.ProxyURL)
+
+		// create mj service
+		service := NewService()
+	}
+
+	return &ServicePool{
+		taskQueue: store.NewRedisQueue("MidJourney_Task_Queue", redisCli),
+	}
+}
+
+func (p *ServicePool) PushTask(task types.MjTask) {
+	logger.Debugf("add a new MidJourney task to the task list: %+v", task)
+	p.taskQueue.RPush(task)
+}