package vo

import (
	"electricity_bill_calc/model"
	"electricity_bill_calc/types"
	"fmt"

	"github.com/shopspring/decimal"
)

type MeterReadingForm struct {
	Overall  decimal.Decimal `json:"overall"`
	Critical decimal.Decimal `json:"critical"`
	Peak     decimal.Decimal `json:"peak"`
	Flat     decimal.Decimal `json:"flat"`
	Valley   decimal.Decimal `json:"valley"`
	ReadAt   *types.DateTime `json:"readAt"`
}

func (r MeterReadingForm) Validate() bool {
	flat := r.Overall.Sub(r.Critical).Sub(r.Peak).Sub(r.Valley)
	return flat.LessThan(decimal.Zero)
}

type MeterReadingFormWithCode struct {
	Code string `json:"code"`
	MeterReadingForm
}

type MeterReadingDetailResponse struct {
	Code            string          `json:"code"`
	Park            string          `json:"parkId"`
	Address         *string         `json:"address"`
	Seq             int64           `json:"seq"`
	Ratio           decimal.Decimal `json:"ratio"`
	MeterType       int16           `json:"type"`
	Enabled         bool            `json:"enabled"`
	Building        *string         `json:"building"`
	BuildingName    *string         `json:"buildingName"`
	OnFloor         *string         `json:"onFloor"`
	Area            decimal.Decimal `json:"area"`
	AttachedAt      *types.DateTime `json:"attachedAt"`
	DetachedAt      *types.DateTime `json:"detachedAt"`
	CreatedAt       types.DateTime  `json:"createdAt"`
	LastModifiedAt  *types.DateTime `json:"lastModifiedAt"`
	ReadAt          types.DateTime  `json:"readAt"`
	ReadAtTimestamp string          `json:"readAtTimestamp"`
	Overall         decimal.Decimal `json:"overall"`
	Critical        decimal.Decimal `json:"critical"`
	Peak            decimal.Decimal `json:"peak"`
	Flat            decimal.Decimal `json:"flat"`
	Valley          decimal.Decimal `json:"valley"`
}

func FromDetailedMeterReading(reading model.DetailedMeterReading) MeterReadingDetailResponse {
	return MeterReadingDetailResponse{
		Code:            reading.Detail.Code,
		Park:            reading.Detail.Park,
		Address:         reading.Detail.Address,
		Seq:             reading.Detail.Seq,
		Ratio:           reading.Detail.Ratio,
		MeterType:       reading.Detail.MeterType,
		Enabled:         reading.Detail.Enabled,
		Building:        reading.Detail.Building,
		BuildingName:    reading.Detail.BuildingName,
		OnFloor:         reading.Detail.OnFloor,
		Area:            reading.Detail.Area.Decimal,
		AttachedAt:      reading.Detail.AttachedAt,
		DetachedAt:      (*types.DateTime)(reading.Detail.DetachedAt),
		CreatedAt:       types.DateTime(reading.Detail.CreatedAt),
		LastModifiedAt:  (*types.DateTime)(&reading.Detail.LastModifiedAt),
		ReadAt:          reading.Reading.ReadAt,
		ReadAtTimestamp: fmt.Sprintf("%d", reading.Reading.ReadAt.UnixMicro()),
		Overall:         reading.Reading.Overall,
		Critical:        reading.Reading.Critical,
		Peak:            reading.Reading.Peak,
		Flat:            reading.Reading.Flat,
		Valley:          reading.Reading.Valley,
	}
}