package mrktplaats

import (
	"encoding/json"
	"fmt"
	"time"
)

// Price represents a listing price. All amounts are in euro cents.
type Price struct {
	PriceType      string `json:"priceType"`
	PriceTypeLabel string `json:"priceTypeLabel"`
	PriceAmount    int    `json:"priceAmount"`
}

// Picture represents an image with CDN URLs at various sizes.
type Picture struct {
	ID              int         `json:"id"`
	ExtraSmall      string      `json:"extraSmall"`
	Medium          string      `json:"medium"`
	Large           string      `json:"large"`
	ExtraExtraLarge string      `json:"extraExtraLarge,omitempty"`
	AspectRatio     interface{} `json:"aspectRatio,omitempty"`
	Width           int         `json:"width,omitempty"`
	Height          int         `json:"height,omitempty"`
}

// AdAddress represents the geographic location of a listing.
type AdAddress struct {
	City                string  `json:"city"`
	Country             string  `json:"country"`
	CountryAbbreviation string  `json:"countryAbbreviation"`
	ZipCode             string  `json:"zipCode,omitempty"`
	Latitude            float64 `json:"latitude"`
	Longitude           float64 `json:"longitude"`
}

// Attribute represents a listing attribute (e.g. condition, brand).
type Attribute struct {
	ID     int              `json:"id"`
	Key    string           `json:"key"`
	Name   string           `json:"name"`
	Values []AttributeValue `json:"values"`
}

// AttributeValue represents a single value of an attribute.
type AttributeValue struct {
	ID   int    `json:"id"`
	Name string `json:"name"`
}

// AdCore contains the core fields shared across search results and item detail views.
type AdCore struct {
	URN         string      `json:"urn"`
	Title       string      `json:"title"`
	Description string      `json:"description,omitempty"`
	CategoryID  int         `json:"categoryId"`
	Price       Price       `json:"price"`
	Picture     *Picture    `json:"picture,omitempty"`
	Pictures    []Picture   `json:"pictures,omitempty"`
	AdAddress   AdAddress   `json:"adAddress"`
	Attributes  []Attribute `json:"attributes,omitempty"`
	Link        string      `json:"link,omitempty"`
}

// SellerInformation identifies the seller of a listing.
type SellerInformation struct {
	ID            int    `json:"id"`
	Name          string `json:"name"`
	Type          string `json:"type,omitempty"`
	Phone         string `json:"phone,omitempty"`
	PhoneHidden   bool   `json:"phoneNumberHidden,omitempty"`
	AllowASQ      bool   `json:"allowAsq,omitempty"`
	ActiveSince   json.RawMessage `json:"activeSince,omitempty"`
	SavedForUser  bool   `json:"savedForUser,omitempty"`
	KYCState      json.RawMessage `json:"kycState,omitempty"`
	MerchantState string `json:"merchantState,omitempty"`
	DealerPackage string `json:"dealerPackage,omitempty"`
}

// User represents an authenticated user account.
type User struct {
	ID                    int    `json:"id"`
	EncryptedID           string `json:"encryptedId"`
	Name                  string `json:"name"`
	Email                 string `json:"email"`
	Phone                 string `json:"phone"`
	ZipCode               string `json:"zipCode"`
	ActivationDate        string `json:"activationDate"`
	RegistrationDate      string `json:"registrationDate"`
	OneClickOptedIn       bool   `json:"oneClickOptedIn"`
	OneClickBlocked       bool   `json:"oneClickBlocked"`
	ProfilePicture        string `json:"profilePicture"`
	ShowMapOnVipEnabled   bool   `json:"showMapOnVipEnabled"`
	NdfcDeclarationStatus string `json:"ndfcDeclarationStatus"`
}

// DiscoveryPrice is the snake_case price used by older API3 endpoints.
type DiscoveryPrice struct {
	PriceType      string `json:"price_type"`
	PriceTypeLabel string `json:"price_type_label"`
	PriceAmount    int    `json:"price_amount"`
}

// DiscoveryPicture is the snake_case picture used by older API3 endpoints.
type DiscoveryPicture struct {
	ID         int    `json:"id"`
	ExtraSmall string `json:"extra_small"`
	Medium     string `json:"medium"`
	Large      string `json:"large"`
}

// FlexTime is a time.Time that accepts dates without a timezone suffix
// (e.g. "2025-10-18T14:50:53") in addition to standard RFC3339.
type FlexTime struct{ time.Time }

// UnmarshalJSON parses RFC3339 dates, falling back to local (UTC) parsing
// when the timezone suffix is absent.
func (ft *FlexTime) UnmarshalJSON(data []byte) error {
	if len(data) < 2 || data[0] != '"' {
		return nil
	}
	s := string(data[1 : len(data)-1])
	t, err := time.Parse(time.RFC3339, s)
	if err != nil {
		t, err = time.ParseInLocation("2006-01-02T15:04:05", s, time.UTC)
		if err != nil {
			return fmt.Errorf("FlexTime: cannot parse %q", s)
		}
	}
	ft.Time = t
	return nil
}

// Review represents a user review.
type Review struct {
	ID            int            `json:"id"`
	Reviewer      ReviewUser     `json:"reviewer"`
	Reviewee      ReviewUser     `json:"reviewee"`
	Direction     string         `json:"direction"`
	CreationDate  FlexTime       `json:"creationDate"`
	Score         int            `json:"score"`
	ItemID        string         `json:"itemId"`
	Advertisement ReviewAd       `json:"advertisement"`
	Details       []ReviewDetail `json:"details"`
	Content       ReviewContent  `json:"content"`
	ReviewSubject string         `json:"reviewSubject"`
}

// ReviewUser is a participant in a review.
type ReviewUser struct {
	ID       int    `json:"id"`
	Nickname string `json:"nickname"`
}

// ReviewAd is the listing associated with a review.
type ReviewAd struct {
	ID           string `json:"id"`
	Title        string `json:"title"`
	CategoryName string `json:"categoryName"`
}

// ReviewDetail contains category-level review scoring.
type ReviewDetail struct {
	Category        string                 `json:"category"`
	Score           int                    `json:"score"`
	Characteristics []ReviewCharacteristic `json:"characteristics"`
}

// ReviewCharacteristic is an individual review trait.
type ReviewCharacteristic struct {
	ID         int    `json:"id"`
	Text       string `json:"text"`
	IsPositive bool   `json:"isPositive"`
}

// ReviewContent holds the textual content of a review.
type ReviewContent struct {
	Subject string `json:"subject"`
}

// ReviewSummary provides aggregate review statistics.
type ReviewSummary struct {
	NumberOfReviews int     `json:"numberOfReviews"`
	AverageScore    float64 `json:"averageScore"`
}