package eform

import (
	"encoding/xml"
	"time"
)

// =====================================================
// TENDERING TERMS
// =====================================================

// TenderingTerms represents tendering terms
type TenderingTerms struct {
	TendererQualificationRequest    []TendererQualificationRequest  `json:"tenderer_qualification_request,omitempty" xml:"TendererQualificationRequest,omitempty"`
	AppealTerms                     AppealTerms                     `json:"appeal_terms,omitempty" xml:"AppealTerms,omitempty"`
	CallForTendersDocumentReference CallForTendersDocumentReference `json:"call_for_tenders_document_reference,omitempty" xml:"CallForTendersDocumentReference,omitempty"`
	TenderRecipientParty            TenderRecipientParty            `json:"tender_recipient_party,omitempty" xml:"TenderRecipientParty,omitempty"`
	UBLExtensions                   UBLExtensions                   `json:"ubl_extensions,omitempty" xml:"UBLExtensions,omitempty"`
}

// TendererQualificationRequest represents qualification requirements
type TendererQualificationRequest struct {
	SpecificTendererRequirement []SpecificTendererRequirement `json:"specific_tenderer_requirement,omitempty" xml:"SpecificTendererRequirement,omitempty"`
}

// SpecificTendererRequirement represents specific requirements
type SpecificTendererRequirement struct {
	XMLName                     xml.Name `xml:"SpecificTendererRequirement"`
	TendererRequirementTypeCode string   `xml:"TendererRequirementTypeCode"`
	Description                 string   `xml:"Description,omitempty"`
}

// AppealTerms represents appeal terms for review organization
type AppealTerms struct {
	XMLName             xml.Name            `xml:"AppealTerms"`
	AppealReceiverParty AppealReceiverParty `xml:"AppealReceiverParty"`
}

// AppealReceiverParty represents the party that receives appeals
type AppealReceiverParty struct {
	XMLName             xml.Name            `xml:"AppealReceiverParty"`
	PartyIdentification PartyIdentification `xml:"PartyIdentification"`
}

// CallForTendersDocumentReference represents document reference
type CallForTendersDocumentReference struct {
	XMLName       xml.Name      `xml:"CallForTendersDocumentReference"`
	ID            string        `xml:"ID"`
	DocumentType  string        `xml:"DocumentType,omitempty"`
	Attachment    Attachment    `xml:"Attachment"`
	UBLExtensions UBLExtensions `xml:"UBLExtensions,omitempty"`
}

// Attachment represents document attachment
type Attachment struct {
	ExternalReference ExternalReference `json:"external_reference" xml:"ExternalReference"`
}

// ExternalReference represents external document reference
type ExternalReference struct {
	XMLName xml.Name `xml:"ExternalReference"`
	URI     string   `xml:"URI"`
}

// TenderRecipientParty represents the party that receives tenders
type TenderRecipientParty struct {
	XMLName    xml.Name `xml:"TenderRecipientParty"`
	EndpointID string   `xml:"EndpointID"`
}

// EOSize represents economic operator size restrictions
type EOSize string

const (
	EOSizeNone   EOSize = "none"
	EOSizeSME    EOSize = "sme"
	EOSizeNotSME EOSize = "not-sme"
)

// TenderOpening represents tender opening information
type TenderOpening struct {
	DateTime    time.Time `json:"date_time" xml:"date_time" validate:"required"`
	Place       string    `json:"place,omitempty" xml:"place,omitempty" validate:"max=500"`
	Description string    `json:"description,omitempty" xml:"description,omitempty" validate:"max=2000"`
}