package controllers

import (
	"time"

	"cloud.o-forge.io/core/oc-catalog/models"
	"github.com/beego/beego/v2/core/logs"
	beego "github.com/beego/beego/v2/server/web"
	"github.com/vk496/cron"
)

type WorkflowController struct {
	beego.Controller
}

// @Title Create a new workflow
// @Description Create a name for the new workflow
// @Param	workflowName				query 	string	true		"Name of the workflow"
// @Success 200 {string} Workflow created succeful
// @Failure 403 Authentication issue
// @Failure 400 {string} Other error
// // @Security jwtAPIToken
// @router / [post]
func (u *WorkflowController) CreateWorkflow(workflowName string) {
	// token := u.Ctx.Input.GetData("jwtAPIToken").(string)

	// //TODO: Implement as swagger security definition (api key?)
	// username, err := GetUsernameFromToken(token)
	// if err != nil {
	// 	u.Data["json"] = "No valid token"
	// 	u.Ctx.Output.Status = 403
	// 	u.ServeJSON()
	// 	return
	// }

	username := "asd"

	if err := models.CreateWorkflow(username, workflowName); err != nil {
		u.Data["json"] = err.Error()
		u.Ctx.Output.Status = 400
		u.ServeJSON()
		return
	}
}

// @Title List workflows
// @Description List available workflows
// @Success 200 []string List of workflows
// @Failure 403 Authentication issue
// @Failure 400 {string} Other error
// // @Security jwtAPIToken
// @router / [get]
func (u *WorkflowController) ListWorkflows() {
	// token := u.Ctx.Input.GetData("jwtAPIToken").(string)

	username := "asd"

	w := models.GetWorkspace(username)

	if w == nil {
		// No username
		u.Data["json"] = "Workspace doesn't exist"
		u.Ctx.Output.Status = 400
		u.ServeJSON()
	}

	u.Data["json"] = w.GetWorkflows()
	u.ServeJSON()
}

// @Title Get Workflow
// @Description Get a workflow by name
// @Param   workflowName    path    string     true  "Workflow Name"
// @Success 200 {object} models.Workflow
// @Failure 403 Authentication issue
// @Failure 400 {string} Other error
// // @Security jwtAPIToken
// @router /:workflowName [get]
func (u *WorkflowController) GetWorkflow(workflowName string) {
	// token := u.Ctx.Input.GetData("jwtAPIToken").(string)

	username := "asd"

	proj, err := models.GetWorkflow(username, workflowName)
	if err != nil {
		u.SetData(err.Error())
		u.Ctx.Output.Status = 400
		u.ServeJSON()
		return
	}

	u.Data["json"] = proj
	u.ServeJSON()
}

// @Title Add new object to a Workflow
// @Description Create a Rtype object from already added resources to the workspace
// @Param   workflowName    path    string     true 		"workflow Name"
// @Param	rID			   query   string	  true		"rID of already existing item in Workspace"
// @Success 200 {string} ID of the new object (rObjID)
// @Failure 403 Authentication issue
// @Failure 400 {string} Other error
// // @Security jwtAPIToken
// @router /:workflowName/add [post]
func (u *WorkflowController) AddElementWorkflow(workflowName, rID string) {
	username := "asd"

	rObjID, err := models.CreateObjectInWorkflow(username, workflowName, rID)
	if err != nil {
		logs.Debug(err.Error())
		u.Data["json"] = err.Error()
		u.Ctx.Output.Status = 400
		u.ServeJSON()
		return
	}

	u.Data["json"] = rObjID
	u.ServeJSON()
	return
}

// @Title Parse mxGraph
// @Description If we use this aproach to transofrm mxgraph representation in our representation, we should not use other API calls for modify the project structure or we'll have inconsistencies.
// @Param   workflowName    			   path    string     true 		"Workflow Name"
// @Param   xmlData    			   	   body    string     true 		"Xml representation of the workflow"
// @Success 200 The xmlgraph consumed correctly
// @Success 201 The xmlgraph consumed with issues
// @Failure 403 Authentication issue
// @Failure 400 {string} Other error
// @router /:workflowName/mxGraphParser [post]
func (u *WorkflowController) MxGraphParser(workflowName, xmlData string) {
	username := "asd"
	err, mxissues := models.ParseMxGraph(username, workflowName, xmlData)
	if err != nil {
		logs.Debug(err.Error())
		u.CustomAbort(400, err.Error())
	}

	if len(mxissues) > 0 {
		strErrors := make([]string, len(mxissues))

		for i, err := range mxissues {
			strErrors[i] = err.Error()
		}

		u.Data["json"] = strErrors
		u.Ctx.Output.Status = 201
		u.ServeJSON()
		return
	}

}

// @Title Get mxGraph last status
// @Description Obtain the last mxgraph XML status from the workflow
// @Param   workflowName    			   path    string     true 		"Workflow Name"
// @Success 200 The xmlgraph
// @Success 201 Empty workflow
// @Failure 403 Authentication issue
// @Failure 400 {string} Other error
// @router /:workflowName/mxGraphParser [get]
func (u *WorkflowController) MxGraphParserConsume(workflowName string) {
	username := "asd"
	xmlData, err := models.GetMxGraph(username, workflowName)
	if err != nil {
		logs.Debug(err.Error())
		u.Data["json"] = err.Error()
		u.Ctx.Output.Status = 400
		u.ServeJSON()
		return
	}

	if xmlData == nil {
		u.Ctx.Output.Status = 201
	} else {
		u.Ctx.Output.Status = 200
		u.Ctx.Output.Body([]byte(*xmlData))
		u.ServeXML()
	}
	return
}

// @Title Create a realtionship between two Robjects
// @Description Create a Rtype object from already added resources to the workspace
// @Param   workflowName    			   path    string     true 		"Workflow Name"
// @Param	rObjIDsource			   query   string	  true		"Robject source. Usually Data"
// @Param	isInput					   query   bool		  true		"If the operation is for input (true) linkage or output (false)"
// @Param	rObjIDtarger			   query   string	  true		"Robject where will be written the association"
// @Success 200 {string} ID of the new object (rObjID)
// @Failure 403 Authentication issue
// @Failure 400 {string} Other error
// // @Security jwtAPIToken
// @router /:workflowName/link [post]
func (u *WorkflowController) LinkElementsWorkflow(workflowName, rObjIDsource, rObjIDtarger string, isInput bool) {
	username := "asd"

	err := models.LinkObjectsInWorkspace(username, workflowName, rObjIDsource, isInput, rObjIDtarger)
	if err != nil {
		logs.Debug(err.Error())
		u.Data["json"] = err.Error()
		u.Ctx.Output.Status = 400
		u.ServeJSON()
		return
	}
}

// @Title Get Schedule
// @Description Obtain the desired schedule of this workflow
// @Param   workflowName    			   path    string     true 		"Workflow Name"
// @Success 200 {object} models.ScheduleTime
// @Failure 403 Authentication issue
// @Failure 400 Workflow doesn't exist
// @Failure 401 Other error
// @router /:workflowName/schedule [get]
func (u *WorkflowController) GetWorkflowSchedule(workflowName string) {
	username := "asd"
	sched, err := models.GetWorkflowSchedule(username, workflowName)

	// Some error
	if err != nil {
		u.CustomAbort(401, err.Error())
	}

	// No workflow
	if sched == nil {
		u.Ctx.Output.Status = 400
		return
	}

	u.Ctx.Output.Status = 200
	u.Data["json"] = sched
	u.ServeJSON()
}

// @Title Set Schedule
// @Description Set desired schedule by the user. No other effects a part of saving the user input
// @Param   workflowName    			   path    string     true 		"Workflow Name"
// @Param   isService    			       query   bool       true 		"True: Service, False: Task"
// @Param   startDate    			       query   time.Time  true 		"RFC3339 time for startDate"
// @Param   stopDate    			       query   time.Time  true 		"RFC3339 time for stopDate"
// @Param   events	    			   	   query   string     false		"List of events separated by comma"
// @Param   cronString    			   	   query   string     false		"Cron string"
// @Param   duration    			   	   query   uint       false		"Duration in seconds"
// @Success 200 {object} models.ScheduleInfo
// @Failure 403 Authentication issue
// @Failure 400 Workflow doesn't exist
// @Failure 401 Other error
// @Failure 402 Bad user input
// @router /:workflowName/schedule [put]
func (u *WorkflowController) SetWorkflowSchedule(workflowName, cronString, events string, isService bool, startDate, stopDate time.Time, duration uint) {
	username := "asd"

	// Check Dates
	if startDate.After(stopDate) || startDate.Equal(stopDate) {
		u.CustomAbort(402, "startDate must be before stopDate")
	}

	if startDate.Before(time.Now().UTC()) {
		u.CustomAbort(402, "Current server time ("+time.Now().UTC().String()+") is after the startDate ("+startDate.String()+")")
	}

	// Tasks must have cron and duration
	if !isService {
		if cronString == "" {
			u.CustomAbort(402, "Tasks cronString must not be empty")
		}

		if duration == 0 {
			u.CustomAbort(402, "Tasks duration musn't be 0")
		}

		_, err := cron.Parse(cronString)
		// Check cron
		if err != nil {
			u.CustomAbort(402, "Bad cron message: "+err.Error())
		}

	}

	schedInfo, err := models.SetWorkflowSchedule(username, workflowName, cronString, events, isService, startDate, stopDate, duration)

	// Some error
	if err != nil {
		u.CustomAbort(401, err.Error())
	}

	// No workflow
	if schedInfo == nil {
		u.CustomAbort(400, "")
	}

	u.Ctx.Output.Status = 200
	u.Data["json"] = schedInfo
	u.ServeJSON()
}

// @Title Check Schedule
// @Description Check if we can schedule the project in other DCs. Must set a desired schedule first!
// @Param   workflowName    			   path    string     true 		"Workflow Name"
// @Success 200 {object} []models.DCstatus
// @Failure 403 Authentication issue
// @Failure 401 Other error
// @router /:workflowName/schedule/check [get]
func (u *WorkflowController) CheckWorkflowSchedule(workflowName string) {
	username := "asd"

	data, err := models.CheckAndBookWorkflowSchedule(username, workflowName, false)
	if err != nil {
		u.CustomAbort(401, err.Error())
	}

	u.Ctx.Output.Status = 200
	u.Data["json"] = data
	u.ServeJSON()
	return
}

// @Title Book Schedule
// @Description Book a schedule in all DCs of the workflow. Must set a desired schedule first!
// @Param   workflowName    			   path    string     true 		"Workflow Name"
// @Success 200 {object} []models.DCstatus
// @Failure 403 Authentication issue
// @Failure 401 Other error. Check output
// @router /:workflowName/schedule/book [post]
func (u *WorkflowController) BookWorkflowSchedule(workflowName string) {
	username := "asd"

	data, err := models.CheckAndBookWorkflowSchedule(username, workflowName, true)
	if err != nil {
		u.CustomAbort(401, err.Error())
	}

	u.Ctx.Output.Status = 200
	u.Data["json"] = data
	u.ServeJSON()
	return
}