package controllers

import (
	"encoding/json"
	"fmt"

	oclib "cloud.o-forge.io/core/oc-lib"
	"cloud.o-forge.io/core/oc-lib/dbs"
	"cloud.o-forge.io/core/oc-lib/models/common/enum"
	"cloud.o-forge.io/core/oc-lib/models/workflow"
	"cloud.o-forge.io/core/oc-lib/models/workflow_execution"
	"cloud.o-forge.io/core/oc-lib/tools"
	beego "github.com/beego/beego/v2/server/web"
	"github.com/google/uuid"
)

var orderCollection = oclib.LibDataEnum(oclib.ORDER)
var logger = oclib.GetLogger()

// Operations about workflow
type WorkflowSchedulerController struct {
	beego.Controller
}

// @Title Schedule
// @Description schedule workflow
// @Param	id		path 	string	true		"id execution"
// @Param	body		body 	models.compute	true		"The compute content"
// @Success 200 {workspace} models.workspace
// @router /:id [post]
func (o *WorkflowSchedulerController) Schedule() {
	logger := oclib.GetLogger()

	code := 200
	e := ""
	user, peerID, groups := oclib.ExtractTokenInfo(*o.Ctx.Request)
	wfId := o.Ctx.Input.Param(":id")
	var resp *workflow_execution.WorkflowSchedule
	json.Unmarshal(o.Ctx.Input.CopyBody(100000), &resp)
	
	caller := tools.NewHTTPCaller(map[tools.DataType]map[tools.METHOD]string{ // paths to call other OC services
		tools.PEER: {
			tools.POST: "/status/",
		},
		tools.BOOKING: {
			tools.GET:  "/booking/check/:id/:start_date/:end_date",
			tools.POST: "/booking/",
		},
		
	})

	logger.Info().Msg("Booking for " + wfId)
	req := oclib.NewRequest(collection, user, peerID, groups, caller)
	resp.UUID = uuid.New().String()

	sch, err := req.Schedule(wfId, resp)
	if err != nil {
		if sch != nil {
			for _, w := range sch.WorkflowExecution {
				req.DeleteOne(w.GetID())
			}
		}
		o.Data["json"] = map[string]interface{}{
			"data":  nil,
			"code":  409,
			"error": "Error when scheduling your execution(s): " + err.Error(),
		}
		o.ServeJSON()
		return
	}

	logger.Info().Msg("Creating S3 service account if necessary")
	execs := sch.WorkflowExecution
	for _, exec := range execs {
		execId := exec.ExecutionsID
		logger.Info().Msg("S3 ServiceAccount for " + execId)
		// execId = "6cdaf6e4-5727-480e-ab97-f78853c4e553"
		err = createStorageServiceAccount(execId, peerID, wfId, resp, caller, user, groups)
		if err != nil {
			// if sch != nil {
			// 	for _, w := range sch.WorkflowExecution {
			// 		req.DeleteOne(w.GetID())
			// 	}
			// }
			o.Data["json"] = map[string]interface{}{
				"data":  nil,
				"code":  409,
				"error": err.Error(),
			}
			o.ServeJSON()
			return
		}	
	}
	
	o.Data["json"] = map[string]interface{}{
		"data":  sch.WorkflowExecution,
		"code":  code,
		"error": e,
	}
	o.ServeJSON()
}

// @Title UnSchedule
// @Description schedule workflow
// @Param	id		path 	string	true		"id execution"
// @Param	body		body 	models.compute	true		"The compute content"
// @Success 200 {workspace} models.workspace
// @router /:id [delete]
func (o *WorkflowSchedulerController) UnSchedule() {
	user, peerID, groups := oclib.ExtractTokenInfo(*o.Ctx.Request)
	id := o.Ctx.Input.Param(":id")
	// TODO UNSCHEDULER
	filter := &dbs.Filters{
		And: map[string][]dbs.Filter{
			"workflow_id": {{Operator: dbs.EQUAL.String(), Value: id}},
		},
	}
	o.Data["json"] = oclib.NewRequest(collection, user, peerID, groups, nil).Search(filter, "", true)
	o.ServeJSON()
}

// @Title SearchScheduledDraftOrder
// @Description schedule workflow
// @Param	id		path 	string	true		"id execution"
// @Success 200 {workspace} models.workspace
// @router /:id/order [get]
func (o *WorkflowSchedulerController) SearchScheduledDraftOrder() {
	user, peerID, groups := oclib.ExtractTokenInfo(*o.Ctx.Request)
	id := o.Ctx.Input.Param(":id")
	filter := &dbs.Filters{
		And: map[string][]dbs.Filter{
			"workflow_id": {{Operator: dbs.EQUAL.String(), Value: id}},
			"order_by":    {{Operator: dbs.EQUAL.String(), Value: peerID}},
		},
	}
	o.Data["json"] = oclib.NewRequest(orderCollection, user, peerID, groups, nil).Search(filter, "", true)
	o.ServeJSON()
}


func createStorageServiceAccount(execId string, peerID string, wfId string, wfs *workflow_execution.WorkflowSchedule, caller *tools.HTTPCaller, user string, groups []string) error {
	l := oclib.GetLogger()
	// Retrieve the Workflow in the WorkflowSchedule
	// For each storage
	wf := loadWorkflow(wfId,peerID)
	for _, id := range wf.Storages {
		// Load the storage
		res := oclib.NewRequest(oclib.LibDataEnum(oclib.STORAGE_RESOURCE), user, peerID, groups,nil).LoadOne(id)
		if res.Code != 200 {
			l := oclib.GetLogger()
			l.Error().Msg("Error while loading a storage for creation of the serviceAccount")
			return fmt.Errorf(res.Err) 
		}
		s := res.ToStorageResource()

		if s.StorageType == enum.S3 {
			fmt.Println("Creating a service account on " + peerID + " for " + s.Name)
			res = oclib.NewRequest(oclib.LibDataEnum(oclib.PEER), "", peerID, []string{},nil).LoadOne(s.CreatorID)
			if res.Code != 200 {
				l.Error().Msg("Error while loading a peer for creation of the serviceAccount")
				return fmt.Errorf(res.Err) 
			}
			p := res.ToPeer()

			caller.URLS[tools.MINIO_SVCACC] = map[tools.METHOD]string{
				tools.POST: "/serviceaccount/" + s.UUID + "/" + execId ,
			}

			l.Debug().Msg("Lauching execution on" + p.UUID)
			_, err := p.LaunchPeerExecution(p.UUID, wfId,tools.MINIO_SVCACC,tools.POST,nil,caller)
			if err != nil {
				l.Error().Msg("Error when executing on peer at " + p.Url)
				l.Error().Msg(err.Error())
				return err
			}
			if  caller.LastResults["code"].(int) != 200 {
				l.Error().Msg(fmt.Sprint("Error when trying to create a serviceAccount on storage " + s.Name + " on peer at " + p.Url))
				if _, ok := caller.LastResults["body"]; ok {
					l.Error().Msg(string(caller.LastResults["body"].([]byte)))
					return fmt.Errorf(string(caller.LastResults["body"].(map[string]interface{})["error"].([]byte)))
				}
				
			}

		}

	}

	return nil
}

func loadWorkflow(workflowId string, peerId string) *workflow.Workflow {
	res := oclib.NewRequest(oclib.LibDataEnum(oclib.WORKFLOW), "", peerId, []string{},nil).LoadOne(workflowId)
	if res.Code != 200 {
		l := oclib.GetLogger()
		l.Error().Msg("Error while loading a workflow for creation of the serviceAccount")
		return nil 
	}

	return res.ToWorkflow()

}