package seeding

import (
	"wagfarm-api/assets/seed"
	"wagfarm-api/database"
	"wagfarm-api/logs/generic"
	"wagfarm-api/taxonomy/seedingcondition"
	"wagfarm-api/taxonomy/seedingtechnique"

	"github.com/shopspring/decimal"
	"gorm.io/gorm"
)

type SeedingLog struct {
	generic.FieldWorkLog
	SeedID       uint                              `gorm:"not null"`
	Seed         seed.Seed                         `gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE;not null"`
	TechniqueID  uint                              `gorm:"not null"`
	Technique    seedingtechnique.SeedingTechnique `gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE;not null"`
	Amount       float64                           `gorm:"not null"` // in units/ha
	ConditionsID uint                              `gorm:"not null"`
	Conditions   seedingcondition.SeedingCondition `gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE;not null"`
}

func (l *SeedingLog) AfterSave(db *gorm.DB) (err error) {
	// Example: compute cost as Amount * UnitPrice
	if l.SeedID == 0 {
		if err := db.First(&l.Seed, l.SeedID).Error; err != nil {
			return err
		}
	}

	unitPrice := l.Seed.Cost
	totalCost := unitPrice.Mul(decimal.NewFromFloat(l.Amount))
	l.UpdateCost(db, totalCost)

	return
}

func RegisterModels() { database.RegisterModel(&SeedingLog{}) }