package mrktplaats

import (
	"context"
	"fmt"
)

// EnquiryService handles bidding on listings.
type EnquiryService struct {
	t *transport
}

// PlaceBidRequest defines the payload for placing a bid.
type PlaceBidRequest struct {
	AdURN           string `json:"adUrn"`
	Value           int    `json:"value"` // euro cents
	PersonalMessage string `json:"personalMessage,omitempty"`
	Phone           string `json:"phone,omitempty"`
}

// Bid represents a bid on a listing.
type Bid struct {
	ID    int     `json:"id"`
	Value int     `json:"value"`
	Date  string  `json:"date"`
	User  BidUser `json:"user"`
}

// BidUser identifies the bidder.
type BidUser struct {
	ID       int    `json:"id"`
	Nickname string `json:"nickname"`
}

// BidsResponse contains the bids on a listing.
type BidsResponse struct {
	Bids              []Bid `json:"bids"`
	CurrentMinimumBid int   `json:"currentMinimumBid"`
}

// AskQuestionBody is the payload for contacting a seller about a listing.
type AskQuestionBody struct {
	AdTitle                 *string `json:"adTitle"`
	AdURN                   string  `json:"adUrn"`
	BidID                   *int    `json:"bidId"`
	BidValue                float64 `json:"bidValue"`
	Body                    string  `json:"body"`
	BuyerLocation           *string `json:"buyerLocation"`
	BuyerName               *string `json:"buyerName"`
	CallbackRequest         *string `json:"callbackRequest"`
	CategoryID              int     `json:"categoryId"`
	FinancingInfoRequest    bool    `json:"financingInfoRequest"`
	Phone                   *string `json:"phone"`
	RecipientID             string  `json:"recipientId"`
	RecipientName           *string `json:"recipientName"`
	TradeInRequest          *string `json:"tradeInRequest"`
	VisitOrTestDriveRequest *string `json:"visitOrTestDriveRequest"`
	TradeInRequestAllowed   bool    `json:"tradeInRequestAllowed"`
}

// AskQuestion sends a message to the seller of a listing (the "Ask Seller a Question" / ASQ flow).
// sellerID is the numeric ID of the seller, available as detail.SellerInformation.ID from Listings.Get.
// Returns nil on success (the API responds with 204 No Content).
func (s *EnquiryService) AskQuestion(ctx context.Context, adURN, sellerID, text string) error {
	body := AskQuestionBody{
		AdURN:                 adURN,
		BidValue:              -1.0,
		Body:                  text,
		RecipientID:           sellerID,
		TradeInRequestAllowed: false,
	}
	return s.t.postJSON(ctx, "/app/enquiry/v1/question", nil, nil, body, nil)
}

// PlaceBid places a bid on a listing.
func (s *EnquiryService) PlaceBid(ctx context.Context, itemURN string, req *PlaceBidRequest) (*BidsResponse, error) {
	path := fmt.Sprintf("/app/enquiry/v1/bids/item/%s", itemURN)
	req.AdURN = itemURN
	var resp BidsResponse
	if err := s.t.postJSON(ctx, path, nil, nil, req, &resp); err != nil {
		return nil, err
	}
	return &resp, nil
}

// RemoveBid deletes a bid by its ID.
func (s *EnquiryService) RemoveBid(ctx context.Context, bidID int) (*BidsResponse, error) {
	path := fmt.Sprintf("/app/enquiry/v1/bids/bid/%d", bidID)
	var resp BidsResponse
	if err := s.t.delete(ctx, path, nil, &resp); err != nil {
		return nil, err
	}
	return &resp, nil
}