package eform

// =====================================================
// AWARD CRITERIA
// =====================================================

// AwardCriteria defines how tenders will be evaluated
type AwardCriteria struct {
	Type              AwardCriteriaType `json:"type" xml:"type" validate:"required"`
	PriceWeight       *float64          `json:"price_weight,omitempty" xml:"price_weight,omitempty" validate:"omitempty,min=0,max=100"`
	CriteriaStatement string            `json:"criteria_statement,omitempty" xml:"criteria_statement,omitempty" validate:"max=10000"`
	Criteria          []AwardCriterion  `json:"criteria,omitempty" xml:"criteria,omitempty" validate:"dive"`
	CostCalculation   string            `json:"cost_calculation,omitempty" xml:"cost_calculation,omitempty" validate:"max=10000"`
}

// AwardCriteriaType represents the evaluation approach
type AwardCriteriaType string

const (
	AwardTypePrice     AwardCriteriaType = "price"
	AwardTypeCost      AwardCriteriaType = "cost"
	AwardTypeQualPrice AwardCriteriaType = "qual-price"
)

// AwardCriterion represents an individual evaluation criterion
type AwardCriterion struct {
	ID          string             `json:"id" xml:"id" validate:"required,acIDFormat"`
	Name        string             `json:"name" xml:"name" validate:"required,max=200"`
	Description string             `json:"description,omitempty" xml:"description,omitempty" validate:"max=2000"`
	Weight      float64            `json:"weight" xml:"weight" validate:"required,min=0,max=100"`
	Type        AwardCriterionType `json:"type" xml:"type" validate:"required"`
	SubCriteria []AwardCriterion   `json:"sub_criteria,omitempty" xml:"sub_criteria,omitempty" validate:"dive"`
}

// AwardCriterionType represents the type of criterion
type AwardCriterionType string

const (
	CriterionQuality       AwardCriterionType = "quality"
	CriterionCost          AwardCriterionType = "cost"
	CriterionPrice         AwardCriterionType = "price"
	CriterionSocial        AwardCriterionType = "social"
	CriterionEnvironmental AwardCriterionType = "environmental"
	CriterionInnovative    AwardCriterionType = "innovative"
)

// CalculateTotalAwardCriteriaWeight validates criteria weights sum to 100
func (ac *AwardCriteria) CalculateTotalAwardCriteriaWeight() float64 {
	var total float64
	for _, criterion := range ac.Criteria {
		total += criterion.Weight
	}
	return total
}