更新绘图和视频生成提示词字段长度限制，优化图生图逻辑，统一转成base64 的格式发送到远程 API

api/handler/video_handler.go

@@ -18,9 +18,10 @@ import (
 	"geekai/store/vo"
 	"geekai/utils"
 	"geekai/utils/resp"
+	"time"
+
 	"github.com/gin-gonic/gin"
 	"gorm.io/gorm"
-	"time"
 )
 
 type VideoHandler struct {
@@ -61,10 +62,6 @@ func (h *VideoHandler) LumaCreate(c *gin.Context) {
 		resp.ERROR(c, "prompt is needed")
 		return
 	}
-	if len(data.Prompt) > 2000 {
-		resp.ERROR(c, "提示词太长，请删减提示词。")
-		return
-	}
 
 	user, err := h.GetLoginUser(c)
 	if err != nil {
@@ -160,10 +157,6 @@ func (h *VideoHandler) KeLingCreate(c *gin.Context) {
 		resp.ERROR(c, "prompt is needed")
 		return
 	}
-	if len(data.Prompt) > 2000 {
-		resp.ERROR(c, "提示词太长，请删减提示词。")
-		return
-	}
 
 	userId := int(h.GetLoginUserId(c))
 	params := types.KeLingVideoParams{