package kvmx86

import (
	"context"
	"encoding/json"
	"errors"
	"fmt"
	"net/http"

	"repository.basistech.ru/BASIS/decort-golang-sdk/internal/constants"
	"repository.basistech.ru/BASIS/decort-golang-sdk/internal/validators"
)

type InterfaceMassCreate struct {
	// Network type
	// Should be one of:
	//	- VINS
	//	- EXTNET
	//  - TRUNK
	//  - SDN
	// For SDN, one of the fields sdn_interface_id or sdn_segment_id is specified, but not both at the same time
	// Required: false
	NetType string `url:"netType" json:"netType" validate:"required,massCreateNetType"`

	// Network ID for connect
	// Required: false
	NetID uint64 `url:"netId" json:"netId" validate:"required"`

	// IP address to assign to this VM when connecting to the specified network
	// Required: false
	IPAddr string `url:"ipAddr,omitempty" json:"ipAddr,omitempty"`

	// Used for EXTNET, TRUNK and DPDK
	// Must be 1500-9216
	// Required: false
	MTU uint64 `url:"mtu,omitempty" json:"mtu,omitempty" validate:"omitempty,mtu"`

	// MAC address to assign to this VM when connecting to the specified network
	// Required: false
	MAC string `url:"mac,omitempty" json:"mac,omitempty" validate:"omitempty"`

	// SDN interface id
	// Required: false
	SDNInterfaceID string `url:"sdn_interface_id,omitempty" json:"sdn_interface_id,omitempty"`

	// List of security group IDs to assign to this interface
	// Required: false
	SecGroups []uint64 `url:"security_groups,omitempty" json:"security_groups,omitempty"`

	// Flag indicating whether security groups are enabled for this interface
	// Not applicable to netType VFNIC, TRUNK, or SDN
	// Required: false
	EnableSecGroups bool `url:"enable_secgroups,omitempty" json:"enable_secgroups,omitempty"`

	// Flag indicating whether this interface is enabled (only for VINS, EXTNET, DPDK, SDN, TRUNK)
	// Required: false
	Enabled interface{} `url:"enabled,omitempty" json:"enabled,omitempty" validate:"omitempty,isBool"`

	// Flag indicating whether default gateway are enabled for this interface, not applicable to netType EXTNET, VFNIC, TRUNK, or SDN
	// Default: true
	// Required: false
	EnableDefaultGateway interface{} `url:"enable_default_gateway,omitempty" json:"enable_default_gateway,omitempty" validate:"omitempty,isBool"`

	// SDN Segment ID
	// Required: false
	SDNSegmentID string `url:"sdn_segment_id,omitempty" json:"sdn_segment_id,omitempty"`

	// SDN Object Group IDs
	// Required: false
	SDNObjectGroupIDs []string `url:"sdn_object_group_ids,omitempty" json:"sdn_object_group_ids,omitempty"`

	// SDN Logical Port Display Name
	// Required: false
	SDNLogicalPortDisplayName string `url:"sdn_logical_port_display_name,omitempty" json:"sdn_logical_port_display_name,omitempty"`

	// SDN Logical Port Description
	// Required: false
	SDNLogicalPortDescription string `url:"sdn_logical_port_description,omitempty" json:"sdn_logical_port_description,omitempty"`

	// List of QoS Policy IDs to apply to this interface (default: []), Allow used only with netType VINS, EXTNET and DPDK
	// Required: false
	QoSPolicies []uint64 `url:"qos_policies,omitempty" json:"qos_policies,omitempty"`
}

// MassCreateRequest struct to mass create KVM x86
type MassCreateRequest struct {
	// ID of the resource group, which will own this VM
	// Required: true
	RGID uint64 `url:"rgId" json:"rgId" validate:"required"`

	// Name of this VM.
	// Must be unique among all VMs (including those in DELETED state) in target resource group
	// Required: true
	Name string `url:"name" json:"name" validate:"required"`

	// Number of VMs
	// Required: true
	Count uint64 `url:"count" json:"count" validate:"required"`

	// Number CPUs to allocate to this VM
	// Required: true
	CPU uint64 `url:"cpu" json:"cpu" validate:"required"`

	// Volume of RAM in MB to allocate to this VM
	// Required: true
	RAM uint64 `url:"ram" json:"ram" validate:"required"`

	// Storage policy id of сompute. The rules of the specified storage policy will be used.
	// Required: true
	StoragePolicyID uint64 `url:"storage_policy_id" json:"storage_policy_id" validate:"required"`

	// If True, the imageId, bootDisk, sepId, pool parameters are ignored and the compute is created without a boot disk in the stopped state
	// Required: false
	WithoutBootDisk bool `url:"withoutBootDisk" json:"withoutBootDisk"`

	// ID of the OS image to base this VM on; Could be boot disk image or CD-ROM image
	// Required: false
	ImageID uint64 `url:"imageId,omitempty" json:"imageId,omitempty"`

	// Size of the boot disk in GB
	// Required: false
	BootDisk uint64 `url:"bootDisk,omitempty" json:"bootDisk,omitempty"`

	// ID of SEP to create boot disk on.
	// Uses images SEP ID if not set
	// Required: false
	SEPID uint64 `url:"sepId,omitempty" json:"sepId,omitempty"`

	// Pool to use if SEP ID is set, can be also empty if needed to be chosen by system
	// Required: false
	Pool string `url:"pool,omitempty" json:"pool,omitempty"`

	// Slice of structs with data disk description. Each disk has parameters: required - diskName, size; optional - sepId, pool, desc and imageId.
	// If not specified, compute will be created without disks.
	// To create compute without disks, pass initialized empty slice .
	// Required: false
	DataDisks []DataDisk `url:"-" json:"dataDisks,omitempty" validate:"omitempty,dive"`

	// Slice of structs with net interface description.
	// If not specified, compute will be created with default interface from RG.
	// To create compute without interfaces, pass initialized empty slice .
	// Required: false
	Interfaces []InterfaceMassCreate `url:"-" json:"interfaces,omitempty" validate:"omitempty,dive"`

	// Input data for cloud-init facility
	// Required: false
	UserData string `url:"userdata,omitempty" json:"userdata,omitempty"`

	// Text description of this VM
	// Required: false
	Description string `url:"desc,omitempty" json:"desc,omitempty"`

	// Start after create of not
	// Required: false
	Start bool `url:"start" json:"start"`

	// Type of the emulated system, Q35 or i440fx
	// Required: false
	Chipset string `url:"chipset,omitempty" json:"chipset,omitempty" validate:"omitempty,chipset"`

	// Zone ID
	// Required: false
	ZoneID uint64 `url:"zoneId,omitempty" json:"zoneId,omitempty"`

	// The OS version that will be installed on the virtual machine
	// Required: false
	OSVersion string `url:"os_version,omitempty" json:"os_version,omitempty"`

	// Cache mode for boot disk
	// Required: false
	BootDiskCache string `url:"boot_disk_cache,omitempty" json:"boot_disk_cache,omitempty"`

	// Boot Disk Discard
	// Required: false
	BootDiskDiscard string `url:"boot_disk_discard,omitempty" json:"boot_disk_discard,omitempty"`

	// Priority weight of the VM: higher value means higher priority and later migration
	// Required: false
	// Default: 1
	Weight uint64 `url:"weight,omitempty" json:"weight,omitempty"`

	// CPU alignment profile name
	// Required: false
	CPUAlignmentProfile string `url:"cpu_alignment_profile,omitempty" json:"cpu_alignment_profile,omitempty"`

	// Clock type for the VM
	// Required: false
	// Default: default
	Clock string `url:"clock,omitempty" json:"clock,omitempty"`

	// Watchdog action
	// Required: false
	// Default: reset
	WatchdogAction string `url:"watchdog_action,omitempty" json:"watchdog_action,omitempty" validate:"omitempty,watchdogAction"`

	// Memory balloon mode. One of ["auto","legacy","none"]
	// Required: false
	// Default: "auto"
	MemoryBalloonMode string `url:"memory_balloon_mode,omitempty" json:"memory_balloon_mode,omitempty" validate:"omitempty,memoryBalloonMode"`
}

// GetRAM returns RAM field values
func (r MassCreateRequest) GetRAM() map[string]uint64 {
	res := make(map[string]uint64, 1)

	res["RAM"] = r.RAM

	return res
}

type wrapperMassCreateRequest struct {
	MassCreateRequest
	AsyncMode bool `json:"asyncMode"`
}

type massCreateResponse struct {
	Created []uint64          `json:"created"`
	Errors  map[string]string `json:"errors"`
}

type MassCreateError struct {
	Errors map[string]string
}

func (e *MassCreateError) Error() string {
	errs := make([]error, 0, len(e.Errors))
	for k, v := range e.Errors {
		errs = append(errs, fmt.Errorf("%s: %s", k, v))
	}
	return errors.Join(errs...).Error()
}

// MassCreate creates KVM x86 computes based on specified OS image
func (k KVMX86) MassCreate(ctx context.Context, req MassCreateRequest) ([]uint64, error) {
	err := validators.ValidateRequest(req)
	if err != nil {
		return nil, validators.ValidationErrors(validators.GetErrors(err))
	}

	url := "/cloudbroker/kvmx86/massCreate"

	res, err := k.client.DecortApiCallCtype(ctx, http.MethodPost, url, constants.MIMEJSON, wrapperMassCreateRequest{
		MassCreateRequest: req,
		AsyncMode:         false,
	})
	if err != nil {
		return nil, err
	}

	var result massCreateResponse

	if err = json.Unmarshal(res, &result); err != nil {
		return nil, err
	}

	if len(result.Errors) > 0 {
		return result.Created, &MassCreateError{Errors: result.Errors}
	}

	return result.Created, nil
}

// MassCreateAsync creates KVM x86 computes based on specified OS image in async mode
func (k KVMX86) MassCreateAsync(ctx context.Context, req MassCreateRequest) (string, error) {
	err := validators.ValidateRequest(req)
	if err != nil {
		return "", validators.ValidationErrors(validators.GetErrors(err))
	}

	url := "/cloudbroker/kvmx86/massCreate"

	res, err := k.client.DecortApiCallCtype(ctx, http.MethodPost, url, constants.MIMEJSON, wrapperMassCreateRequest{
		MassCreateRequest: req,
		AsyncMode:         true,
	})
	if err != nil {
		return "", err
	}

	var computes string

	err = json.Unmarshal(res, &computes)
	if err != nil {
		return "", err
	}

	return computes, nil
}
