package oclib

import (
	"errors"
	"fmt"

	"runtime/debug"

	"cloud.o-forge.io/core/oc-lib/dbs"
	"cloud.o-forge.io/core/oc-lib/dbs/mongo"
	"cloud.o-forge.io/core/oc-lib/logs"
	"cloud.o-forge.io/core/oc-lib/models"
	"cloud.o-forge.io/core/oc-lib/models/peer"
	"cloud.o-forge.io/core/oc-lib/models/resource_model"
	"cloud.o-forge.io/core/oc-lib/models/resources/data"
	"cloud.o-forge.io/core/oc-lib/models/resources/datacenter"
	"cloud.o-forge.io/core/oc-lib/models/resources/processing"
	"cloud.o-forge.io/core/oc-lib/models/resources/storage"
	w "cloud.o-forge.io/core/oc-lib/models/resources/workflow"
	"cloud.o-forge.io/core/oc-lib/models/utils"
	w2 "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/models/workspace"
	shared_workspace "cloud.o-forge.io/core/oc-lib/models/workspace/shared"
	"cloud.o-forge.io/core/oc-lib/models/workspace/shared/rules/rule"
	"cloud.o-forge.io/core/oc-lib/tools"
	"github.com/rs/zerolog"
)

type Filters = dbs.Filters

type LibDataEnum int

// init accessible constant to retrieve data from the database
const (
	INVALID             LibDataEnum = iota
	DATA_RESOURCE                   = utils.DATA_RESOURCE
	PROCESSING_RESOURCE             = utils.PROCESSING_RESOURCE
	STORAGE_RESOURCE                = utils.STORAGE_RESOURCE
	DATACENTER_RESOURCE             = utils.DATACENTER_RESOURCE
	WORKFLOW_RESOURCE               = utils.WORKFLOW_RESOURCE
	WORKFLOW                        = utils.WORKFLOW
	WORKSPACE                       = utils.WORKSPACE
	WORKFLOW_EXECUTION              = utils.WORKFLOW_EXECUTION
	PEER                            = utils.PEER
	SHARED_WORKSPACE                = utils.SHARED_WORKSPACE
	RULE                            = utils.RULE
	BOOKING                         = utils.BOOKING
)

// will turn into standards api hostnames
func (d LibDataEnum) API() string {
	return utils.DefaultAPI[d]
}

// will turn into standards name
func (d LibDataEnum) String() string {
	return utils.Str[d]
}

// will turn into enum index
func (d LibDataEnum) EnumIndex() int {
	return int(d)
}

// model to define the shallow data structure
type LibDataShallow struct {
	Data []utils.ShallowDBObject `bson:"data" json:"data"`
	Code int                     `bson:"code" json:"code"`
	Err  string                  `bson:"error" json:"error"`
}

// model to define the data structure
type LibData struct {
	Data utils.DBObject `bson:"data" json:"data"`
	Code int            `bson:"code" json:"code"`
	Err  string         `bson:"error" json:"error"`
}

// here is the singleton variable to store the paths that api will use
var paths map[LibDataEnum]string = map[LibDataEnum]string{}

// to get the paths
func GetPaths() map[LibDataEnum]string {
	return paths
}

// to get the path
func GetPath(collection LibDataEnum) string {
	return paths[collection]
}

// to add the path
func AddPath(collection LibDataEnum, path string) {
	paths[collection] = path
}

func Init(appName string, hostname string, port string) {
	defer func() {
		if r := recover(); r != nil {
			tools.UncatchedError = append(tools.UncatchedError, errors.New("Panic recovered in Init : "+fmt.Sprintf("%v", r)+" - "+string(debug.Stack())))
			fmt.Printf("Panic recovered in Init : %v - %v\n", r, string(debug.Stack()))
		}
	}()
	logs.SetAppName(appName)                                            // set the app name to the logger to define the main log chan
	logs.SetLogger(logs.CreateLogger("main", ""))                       // create the logger
	tools.GetConfig().Host = hostname                                   // set the hostname to the config for inner discovery purpose actually not used
	tools.GetConfig().Port = port                                       // set the port to the config for inner discovery purpose actually not used
	mongo.MONGOService.Init(models.GetModelsNames(), tools.GetConfig()) // init the mongo service
	/*
		Here we will check if the resource model is already stored in the database
		If not we will store it
		Resource model is the model that will define the structure of the resources
	*/
	accessor := (&resource_model.ResourceModel{}).GetAccessor(nil)
	for _, model := range []string{utils.DATA_RESOURCE.String(), utils.PROCESSING_RESOURCE.String(), utils.STORAGE_RESOURCE.String(), utils.DATACENTER_RESOURCE.String(), utils.WORKFLOW_RESOURCE.String()} {
		data, code, _ := accessor.Search(nil, model)
		if code == 404 || len(data) == 0 {
			m := map[string]resource_model.Model{}
			// TODO Specify the model for each resource
			// for now only processing is specified here (not an elegant way)
			if model == utils.PROCESSING_RESOURCE.String() {
				m["image"] = resource_model.Model{
					Type:     "string",
					ReadOnly: false,
				}
				m["command"] = resource_model.Model{
					Type:     "string",
					ReadOnly: false,
				}
				m["args"] = resource_model.Model{
					Type:     "string",
					ReadOnly: false,
				}
				m["execute"] = resource_model.Model{
					Type:     "map[int]map[string]string",
					ReadOnly: false,
				}
			}
			accessor.StoreOne(&resource_model.ResourceModel{
				ResourceType: model,
				Model:        m,
			})
		}
	}
}

// GetLogger returns the main logger
func GetLogger() zerolog.Logger {
	return logs.GetLogger()
}

/*
* Search will search for the data in the database
* @param filters *dbs.Filters
* @param word string
* @param collection LibDataEnum
* @param c ...*tools.HTTPCaller
* @return data LibDataShallow
 */
func Search(filters *dbs.Filters, word string, collection LibDataEnum, c ...*tools.HTTPCaller) (data LibDataShallow) {
	defer func() { // recover the panic
		if r := recover(); r != nil {
			tools.UncatchedError = append(tools.UncatchedError, errors.New("Panic recovered in Search : "+fmt.Sprintf("%v", r)))
			data = LibDataShallow{Data: nil, Code: 500, Err: "Panic recovered in LoadAll : " + fmt.Sprintf("%v", r) + " - " + string(debug.Stack())}
		}
	}()
	var caller *tools.HTTPCaller // define the caller
	if len(c) > 0 {
		caller = c[0]
	}
	d, code, err := models.Model(collection.EnumIndex()).GetAccessor(caller).Search(filters, word)
	if err != nil {
		data = LibDataShallow{Data: d, Code: code, Err: err.Error()}
		return
	}
	data = LibDataShallow{Data: d, Code: code}
	return
}

/*
* LoadAll will load all the data from the database
* @param collection LibDataEnum
* @param c ...*tools.HTTPCaller
* @return data LibDataShallow
 */
func LoadAll(collection LibDataEnum, c ...*tools.HTTPCaller) (data LibDataShallow) {
	defer func() { // recover the panic
		if r := recover(); r != nil {
			tools.UncatchedError = append(tools.UncatchedError, errors.New("Panic recovered in LoadAll : "+fmt.Sprintf("%v", r)+" - "+string(debug.Stack())))
			data = LibDataShallow{Data: nil, Code: 500, Err: "Panic recovered in LoadAll : " + fmt.Sprintf("%v", r) + " - " + string(debug.Stack())}
		}
	}()
	var caller *tools.HTTPCaller // define the caller
	if len(c) > 0 {
		caller = c[0]
	}
	d, code, err := models.Model(collection.EnumIndex()).GetAccessor(caller).LoadAll()
	if err != nil {
		data = LibDataShallow{Data: d, Code: code, Err: err.Error()}
		return
	}
	data = LibDataShallow{Data: d, Code: code}
	return
}

/*
* LoadOne will load one data from the database
* @param collection LibDataEnum
* @param id string
* @param c ...*tools.HTTPCaller
* @return data LibData
 */
func LoadOne(collection LibDataEnum, id string, c ...*tools.HTTPCaller) (data LibData) {
	defer func() { // recover the panic
		if r := recover(); r != nil {
			tools.UncatchedError = append(tools.UncatchedError, errors.New("Panic recovered in LoadOne : "+fmt.Sprintf("%v", r)+" - "+string(debug.Stack())))
			data = LibData{Data: nil, Code: 500, Err: "Panic recovered in LoadOne : " + fmt.Sprintf("%v", r) + " - " + string(debug.Stack())}
		}
	}()
	var caller *tools.HTTPCaller // define the caller
	if len(c) > 0 {
		caller = c[0]
	}
	d, code, err := models.Model(collection.EnumIndex()).GetAccessor(caller).LoadOne(id)
	if err != nil {
		data = LibData{Data: d, Code: code, Err: err.Error()}
		return
	}
	data = LibData{Data: d, Code: code}
	return
}

/*
* UpdateOne will update one data from the database
* @param collection LibDataEnum
* @param set map[string]interface{}
* @param id string
* @param c ...*tools.HTTPCaller
* @return data LibData
 */
func UpdateOne(collection LibDataEnum, set map[string]interface{}, id string, c ...*tools.HTTPCaller) (data LibData) {
	defer func() { // recover the panic
		if r := recover(); r != nil {
			tools.UncatchedError = append(tools.UncatchedError, errors.New("Panic recovered in UpdateOne : "+fmt.Sprintf("%v", r)+" - "+string(debug.Stack())))
			data = LibData{Data: nil, Code: 500, Err: "Panic recovered in UpdateOne : " + fmt.Sprintf("%v", r) + " - " + string(debug.Stack())}
		}
	}()
	var caller *tools.HTTPCaller // define the caller
	if len(c) > 0 {
		caller = c[0]
	}
	model := models.Model(collection.EnumIndex())
	d, code, err := model.GetAccessor(caller).UpdateOne(model.Deserialize(set), id)
	if err != nil {
		data = LibData{Data: d, Code: code, Err: err.Error()}
		return
	}
	data = LibData{Data: d, Code: code}
	return
}

/*
* DeleteOne will delete one data from the database
* @param collection LibDataEnum
* @param id string
* @param c ...*tools.HTTPCaller
* @return data LibData
 */
func DeleteOne(collection LibDataEnum, id string, c ...*tools.HTTPCaller) (data LibData) {
	defer func() { // recover the panic
		if r := recover(); r != nil {
			tools.UncatchedError = append(tools.UncatchedError, errors.New("Panic recovered in DeleteOne : "+fmt.Sprintf("%v", r)+" - "+string(debug.Stack())))
			data = LibData{Data: nil, Code: 500, Err: "Panic recovered in DeleteOne : " + fmt.Sprintf("%v", r) + " - " + string(debug.Stack())}
		}
	}()
	var caller *tools.HTTPCaller // define the caller
	if len(c) > 0 {
		caller = c[0]
	}
	d, code, err := models.Model(collection.EnumIndex()).GetAccessor(caller).DeleteOne(id)
	if err != nil {
		data = LibData{Data: d, Code: code, Err: err.Error()}
		return
	}
	data = LibData{Data: d, Code: code}
	return
}

/*
* StoreOne will store one data from the database
* @param collection LibDataEnum
* @param object map[string]interface{}
* @param c ...*tools.HTTPCaller
* @return data LibData
 */
func StoreOne(collection LibDataEnum, object map[string]interface{}, c ...*tools.HTTPCaller) (data LibData) {
	defer func() { // recover the panic
		if r := recover(); r != nil {
			tools.UncatchedError = append(tools.UncatchedError, errors.New("Panic recovered in StoreOne : "+fmt.Sprintf("%v", r)+" - "+string(debug.Stack())))
			data = LibData{Data: nil, Code: 500, Err: "Panic recovered in StoreOne : " + fmt.Sprintf("%v", r) + " - " + string(debug.Stack())}
		}
	}()
	var caller *tools.HTTPCaller // define the caller
	if len(c) > 0 {
		caller = c[0]
	}
	model := models.Model(collection.EnumIndex())
	d, code, err := model.GetAccessor(caller).StoreOne(model.Deserialize(object))
	if err != nil {
		data = LibData{Data: d, Code: code, Err: err.Error()}
		return
	}
	data = LibData{Data: d, Code: code}
	return
}

/*
* CopyOne will copy one data from the database
* @param collection LibDataEnum
* @param object map[string]interface{}
* @param c ...*tools.HTTPCaller
* @return data LibData
 */
func CopyOne(collection LibDataEnum, object map[string]interface{}, c ...*tools.HTTPCaller) (data LibData) {
	defer func() { // recover the panic
		if r := recover(); r != nil {
			tools.UncatchedError = append(tools.UncatchedError, errors.New("Panic recovered in CopyOne : "+fmt.Sprintf("%v", r)+" - "+string(debug.Stack())))
			data = LibData{Data: nil, Code: 500, Err: "Panic recovered in UpdateOne : " + fmt.Sprintf("%v", r) + " - " + string(debug.Stack())}
		}
	}()
	var caller *tools.HTTPCaller // define the caller
	if len(c) > 0 {
		caller = c[0]
	}
	model := models.Model(collection.EnumIndex())
	d, code, err := model.GetAccessor(caller).CopyOne(model.Deserialize(object))
	if err != nil {
		data = LibData{Data: d, Code: code, Err: err.Error()}
		return
	}
	data = LibData{Data: d, Code: code}
	return
}

// ================ CAST ========================= //

func (l *LibData) ToDataResource() *data.DataResource {
	if l.Data.GetAccessor(nil).GetType() == utils.DATA_RESOURCE.String() {
		return l.Data.(*data.DataResource)
	}
	return nil
}

func (l *LibData) ToDatacenterResource() *datacenter.DatacenterResource {
	if l.Data != nil && l.Data.GetAccessor(nil).GetType() == utils.DATACENTER_RESOURCE.String() {
		return l.Data.(*datacenter.DatacenterResource)
	}
	return nil
}
func (l *LibData) ToStorageResource() *storage.StorageResource {
	if l.Data.GetAccessor(nil).GetType() == utils.STORAGE_RESOURCE.String() {
		return l.Data.(*storage.StorageResource)
	}
	return nil
}
func (l *LibData) ToProcessingResource() *processing.ProcessingResource {
	if l.Data.GetAccessor(nil).GetType() == utils.PROCESSING_RESOURCE.String() {
		return l.Data.(*processing.ProcessingResource)
	}
	return nil
}
func (l *LibData) ToWorkflowResource() *w.WorkflowResource {
	if l.Data.GetAccessor(nil).GetType() == utils.WORKFLOW_RESOURCE.String() {
		return l.Data.(*w.WorkflowResource)
	}
	return nil
}
func (l *LibData) ToPeer() *peer.Peer {
	if l.Data.GetAccessor(nil).GetType() == utils.PEER.String() {
		return l.Data.(*peer.Peer)
	}
	return nil
}

func (l *LibData) ToWorkflow() *w2.Workflow {
	if l.Data.GetAccessor(nil).GetType() == utils.WORKFLOW.String() {
		return l.Data.(*w2.Workflow)
	}
	return nil
}
func (l *LibData) ToWorkspace() *workspace.Workspace {
	if l.Data.GetAccessor(nil).GetType() == utils.WORKSPACE.String() {
		return l.Data.(*workspace.Workspace)
	}
	return nil
}

func (l *LibData) ToSharedWorkspace() *shared_workspace.SharedWorkspace {
	if l.Data.GetAccessor(nil).GetType() == utils.SHARED_WORKSPACE.String() {
		return l.Data.(*shared_workspace.SharedWorkspace)
	}
	return nil
}

func (l *LibData) ToRule() *rule.Rule {
	if l.Data.GetAccessor(nil).GetType() == utils.SHARED_WORKSPACE.String() {
		return l.Data.(*rule.Rule)
	}
	return nil
}

func (l *LibData) ToWorkflowExecution() *workflow_execution.WorkflowExecution {
	if l.Data.GetAccessor(nil).GetType() == utils.WORKFLOW_EXECUTION.String() {
		return l.Data.(*workflow_execution.WorkflowExecution)
	}
	return nil
}