package basismpm

import (
	"context"
	"net/http"
	"strconv"

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

// StartRequest to start basis_mpm service on a node
type StartRequest struct {
	// Node ID
	// Required: true
	NodeID uint64 `url:"node_id" json:"node_id" validate:"required"`

	// Memory pressure threshold (%)
	// Required: false
	// Default: 20
	PressureThreshold float64 `url:"pressure_threshold,omitempty" json:"pressure_threshold,omitempty" validate:"omitempty,pressureThreshold"`

	// Deflate threshold (%)
	// Required: false
	// Default: 30
	DeflateThreshold float64 `url:"deflate_threshold,omitempty" json:"deflate_threshold,omitempty" validate:"omitempty,deflateThreshold"`

	// Host reserved memory
	// Required: false
	// Default: "8GB+5%"
	HostReserved string `url:"host_reserved,omitempty" json:"host_reserved,omitempty"`

	// Buffer percentage (%)
	// Required: false
	// Default: 20
	BufferPCT float64 `url:"buffer_pct,omitempty" json:"buffer_pct,omitempty" validate:"omitempty,bufferPCT"`

	// Guaranteed memory percentage (%)
	// Required: false
	// Default: 25
	GuaranteedPCT float64 `url:"guaranteed_pct,omitempty" json:"guaranteed_pct,omitempty" validate:"omitempty,guaranteedPCT"`

	// Absolute minimum guaranteed memory (MB)
	// Required: false
	// Default: 512
	GuaranteedABSMin uint64 `url:"guaranteed_abs_min,omitempty" json:"guaranteed_abs_min,omitempty" validate:"omitempty,guaranteedABSMin"`

	// Shrink threshold percentage (%)
	// Required: false
	// Default: 50
	ShrinkThresholdPCT float64 `url:"shrink_threshold_pct,omitempty" json:"shrink_threshold_pct,omitempty" validate:"omitempty,shrinkThresholdPCT"`

	// Max shrink percentage per cycle (%)
	// Required: false
	// Default: 10
	BalloonMaxShrinkPCT float64 `url:"balloon_max_shrink_pct,omitempty" json:"balloon_max_shrink_pct,omitempty" validate:"omitempty,balloonMaxShrinkPCT"`

	// Max grow percentage per cycle (%)
	// Required: false
	// Default: 10
	BalloonMaxGrowPCT float64 `url:"balloon_max_grow_pct,omitempty" json:"balloon_max_grow_pct,omitempty" validate:"omitempty,balloonMaxGrowPCT"`

	// VM change cooldown (seconds)
	// Required: false
	// Default: 60
	VMChangeCooldown uint64 `url:"vm_change_cooldown,omitempty" json:"vm_change_cooldown,omitempty" validate:"omitempty,vmChangeCooldown"`

	// Emergency return cooldown (seconds)
	// Required: false
	// Default: 300
	EmergencyReturnCooldown uint64 `url:"emergency_return_cooldown,omitempty" json:"emergency_return_cooldown,omitempty"`

	// Major fault increase per cycle that triggers emergency memory return
	// Required: false
	// Default: 100
	MajorFaultThreshold uint64 `url:"major_fault_threshold,omitempty" json:"major_fault_threshold,omitempty" validate:"omitempty,majorFaultThreshold"`

	// Daemon log level
	// Required: false
	// Default: INFO
	// Options:
	// - DEBUG
	// - INFO
	// - WARNING
	// - ERROR
	// - CRITICAL
	LogLevel string `url:"log_level,omitempty" json:"log_level,omitempty" validate:"omitempty,logLevel"`

	// Daemon log file path (empty for stdout only)
	// Required: false
	LogFile string `url:"log_file,omitempty" json:"log_file,omitempty"`
}

// Start starts basis_mpm service on a node
func (bm BasisMPM) Start(ctx context.Context, req StartRequest) (bool, error) {
	err := validators.ValidateRequest(req)
	if err != nil {
		return false, validators.ValidationErrors(validators.GetErrors(err))
	}

	url := "/cloudbroker/basis_mpm/start"

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

	result, err := strconv.ParseBool(string(res))
	if err != nil {
		return false, err
	}

	return result, nil
}