package models

import (
	"encoding/xml"
	"fmt"
	"strings"

	"cloud.o-forge.io/core/oc-catalog/models/rtype"
	"cloud.o-forge.io/core/oc-catalog/services"
	structtomap "github.com/Klathmon/StructToMap"
	"github.com/beego/beego/v2/core/logs"
	"go.mongodb.org/mongo-driver/bson/primitive"
)

type ExecutionRequirementsModel struct {
	CPUs uint `json:"cpus" required:"true"`
	GPUs uint `json:"gpus" description:"Amount of GPUs needed"`
	RAM  uint `json:"ram" required:"true" description:"Units in MB"`

	// We should check closely how to deal with storage, since they are independent models
	// but also part of a DataCenter
	// Storage      uint   `json:"storage" description:"Units in MB"`

	Parallel     bool   `json:"parallel"`
	ScalingModel uint   `json:"scaling_model"`
	DiskIO       string `json:"disk_io"`
}

type RepositoryModel struct {
	Credentials string `json:"credentials"`
	Url         string `json:"url"`
}

type ComputingNEWModel struct {
	Name             string `json:"name,omitempty" required:"true" validate:"required" description:"Name of the computing"`
	Description      string `json:"description,omitempty" required:"true"`
	ShortDescription string `json:"short_description,omitempty" required:"true" validate:"required"`
	Logo             string `json:"logo,omitempty" required:"true" validate:"required"`

	Type    string `json:"type,omitempty" required:"true"`
	Owner   string `json:"owner,omitempty"`
	License string `json:"license,omitempty"`
	Price   uint   `json:"price,omitempty"`

	ExecutionRequirements ExecutionRequirementsModel `json:"execution_requirements,omitempty"`

	Dinputs  []string `json:"dinputs,omitempty"`		// Possibly redundant with Links object	in oc-schedule
	Doutputs []string `json:"doutputs,omitempty"`		// Possibly redundant with Links objects in oc-schedule

	Image       string   `json:"image,omitempty"`
	Command     string   `json:"command,omitempty"`
	Arguments   []string `json:"arguments,omitempty"`
	Environment []string `json:"environment,omitempty"`
	Ports       []string `json:"ports,omitempty"`

	// CustomDeployment string `json:"custom_deployment,omitempty"`

	// Repository RepositoryModel `json:"repository,omitempty"`
}

type ComputingModel struct {
	ID                string `json:"ID" bson:"_id" required:"true" example:"5099803df3f4948bd2f98391"`
	ComputingNEWModel `bson:",inline"`
}

func (model ComputingModel) getRtype() rtype.Rtype {
	return rtype.COMPUTING
}

func (model ComputingModel) getName() string {
	return model.Name
}

// A user can have multiple workload project with the same model. We must distinguish what is
// the model and what is the user object

type ComputingObject struct {
	ReferenceID primitive.ObjectID `json:"referenceID" description:"Computing model ID"`

	Inputs  []string `json:"inputs"`
	Outputs []string `json:"outputs"`
	Image       string   `json:"image,omitempty"`
	Command     string   `json:"command,omitempty"`
	Arguments   []string `json:"arguments,omitempty"`
	Environment []string `json:"environment,omitempty"`
	Ports       []string `json:"ports,omitempty"`

	DataCenterID string `json:"datacenterID" description:"Datacenter where the computing will be executed"`
}

func (obj ComputingObject) getHost() *string {
	return nil // Host is DC only attribute
}

func (obj *ComputingObject) setReference(rID primitive.ObjectID) {
	obj.ReferenceID = rID
}

func (obj ComputingObject) getReference() primitive.ObjectID {
	return obj.ReferenceID
}

func (obj ComputingObject) getRtype() rtype.Rtype {
	return rtype.COMPUTING
}

func (obj ComputingObject) getModel() (ret ResourceModel, err error) {
	var ret2 ComputingModel
	res := services.MngoCollComputing.FindOne(services.MngoCtx,
		primitive.M{"_id": obj.ReferenceID},
	)

	if err = res.Err(); err != nil {
		return
	}

	err = res.Decode(&ret2)
	return ret2, err
}

func (obj ComputingObject) getName() (name *string) {

	aa, err := obj.getModel()

	if err != nil {
		logs.Warn(err)
		return
	}

	name2 := aa.getName()

	return &name2
}

func (obj ComputingObject) isLinked(rObjID string) LinkingState {
	if contains(obj.Inputs, rObjID) {
		return INPUT
	}

	if contains(obj.Outputs, rObjID) {
		return OUTPUT
	}

	return NO_LINK
}

func (obj *ComputingObject) addLink(direction LinkingState, rID string) {
	switch direction {
	case INPUT:
		obj.Inputs = append(obj.Inputs, rID)
	case OUTPUT:
		obj.Outputs = append(obj.Outputs, rID)
	}
}

func GetOneComputing(ID string) (object *ComputingModel, err error) {
	obj, err := getOneResourceByID(ID, rtype.COMPUTING)

	if err != nil {
		return object, err
	}

	object = obj.(*ComputingModel)

	return object, err
}

func GetMultipleComputing(IDs []string) (object *[]ComputingModel, err error) {
	objArray, err := getMultipleResourceByIDs(IDs, rtype.COMPUTING)

	if err != nil {
		return nil, err
	}

	object = objArray.(*[]ComputingModel)

	return object, err
}

func PostOneComputing(obj ComputingNEWModel) (ID string, err error) {
	return postOneResource(obj, rtype.COMPUTING)
}

func (obj *ComputingObject) AddUserInput(inputs []xml.Attr){
	
	logs.Alert("AddUserInput() is going to throw some alerts while mxGraph GUI is not updated to adapt the inputs to the componant")
	
	// So far only a few input to handle so a switch with a case for each type of attribute
	// is enough, to prevent too much complexity
	
	for _, j := range(inputs){
		setting, _ := structtomap.Convert(j)
		// fmt.Println(strings.ToLower(setting["Name"]))
		name := setting["Name"].(xml.Name).Local
		value := setting["Value"]
		switch name {
		case "command":
			obj.Command = value.(string)
		case "args":
			empty, sliced_arguments := getSliceSettings(value.(string))
			if (!empty){
				obj.Arguments = sliced_arguments
			}
		case "env" :
			empty, sliced_arguments := getSliceSettings(value.(string))
			if (!empty){
				obj.Environment = sliced_arguments
			}
		default:
			logs.Alert(fmt.Printf("%s is not an attribute of computing componants", name))
		}

	}
	
	
}

func getSliceSettings(string_to_parse string)(empty bool, sliced_string []string){
	if len(string_to_parse) == 0 {
		return true, nil
 	}
	empty = false	
	sliced_string = strings.Split(string_to_parse," ")
	return
}