Init V4 community edition (#2265)

* Init V4 community edition

* Init V4 community edition

routers/controllers/workflow.go

@@ -0,0 +1,68 @@
+package controllers
+
+import (
+	"github.com/cloudreve/Cloudreve/v4/pkg/hashid"
+	"github.com/cloudreve/Cloudreve/v4/pkg/queue"
+	"github.com/cloudreve/Cloudreve/v4/pkg/serializer"
+	"github.com/cloudreve/Cloudreve/v4/service/explorer"
+	"github.com/gin-gonic/gin"
+)
+
+func ListTasks(c *gin.Context) {
+	service := ParametersFromContext[*explorer.ListTaskService](c, explorer.ListTaskParamCtx{})
+	resp, err := service.ListTasks(c)
+	if err != nil {
+		c.JSON(200, serializer.Err(c, err))
+		c.Abort()
+		return
+	}
+
+	if resp != nil {
+		c.JSON(200, serializer.Response{
+			Data: resp,
+		})
+	}
+}
+
+func GetTaskPhaseProgress(c *gin.Context) {
+	taskId := hashid.FromContext(c)
+	resp, err := explorer.TaskPhaseProgress(c, taskId)
+	if err != nil {
+		c.JSON(200, serializer.Err(c, err))
+		c.Abort()
+		return
+	}
+
+	if resp != nil {
+		c.JSON(200, serializer.Response{
+			Data: resp,
+		})
+	} else {
+		c.JSON(200, serializer.Response{Data: queue.Progresses{}})
+	}
+}
+
+func SetDownloadTaskTarget(c *gin.Context) {
+	taskId := hashid.FromContext(c)
+	service := ParametersFromContext[*explorer.SetDownloadFilesService](c, explorer.SetDownloadFilesParamCtx{})
+	err := service.SetDownloadFiles(c, taskId)
+	if err != nil {
+		c.JSON(200, serializer.Err(c, err))
+		c.Abort()
+		return
+	}
+
+	c.JSON(200, serializer.Response{})
+}
+
+func CancelDownloadTask(c *gin.Context) {
+	taskId := hashid.FromContext(c)
+	err := explorer.CancelDownloadTask(c, taskId)
+	if err != nil {
+		c.JSON(200, serializer.Err(c, err))
+		c.Abort()
+		return
+	}
+
+	c.JSON(200, serializer.Response{})
+}