import FluentKit
import Foundation

/// A FluentKit model of a single `sales` row: the record of an agreement and of its handshake.
final class SaleRecord: Model, @unchecked Sendable {

    // MARK: Properties

    static let schema = "sales"

    @ID(key: .id)
    var id: UUID?

    @Field(key: "number")
    var number: Int

    @Parent(key: "conversation_id")
    var conversation: ConversationRecord

    @Parent(key: "listing_id")
    var listing: ListingRecord

    @Parent(key: "buyer_id")
    var buyer: UserRecord

    @Parent(key: "seller_id")
    var seller: UserRecord

    @Field(key: "price_cents")
    var priceCents: Int

    @Field(key: "asked_cents")
    var askedCents: Int

    @Field(key: "shipping_cents")
    var shippingCents: Int

    @Field(key: "declared_grade")
    var declaredGrade: String

    @OptionalField(key: "declared_page_quality")
    var declaredPageQuality: String?

    @Field(key: "declared_printing")
    var declaredPrinting: String

    @Field(key: "declared_notes")
    var declaredNotes: String

    @Field(key: "agreed_at")
    var agreedAt: Date

    @OptionalField(key: "paid_at")
    var paidAt: Date?

    @OptionalField(key: "payment_note")
    var paymentNote: String?

    @OptionalField(key: "sent_at")
    var sentAt: Date?

    @OptionalField(key: "shipping_note")
    var shippingNote: String?

    @OptionalField(key: "received_at")
    var receivedAt: Date?

    @OptionalField(key: "buyer_rating")
    var buyerRating: Int?

    @OptionalField(key: "seller_rating")
    var sellerRating: Int?

    // MARK: Initializers

    init() {}

}

// MARK: - Extensions

extension SaleRecord {

    // MARK: Computed

    /// The `Sendable` snapshot of the saved record; its buyer, its seller, and its listing with its shop must be eager-loaded.
    var snapshot: Sale {
        get throws {
            .init(
                number: number,
                conversationID: $conversation.id,
                listing: listing.snapshot,
                buyer: try buyer.snapshot,
                seller: try seller.snapshot,
                priceCents: priceCents,
                askedCents: askedCents,
                shippingCents: shippingCents,
                declared: .init(
                    grade: declaredGrade,
                    pageQuality: declaredPageQuality,
                    printing: declaredPrinting,
                    notes: declaredNotes
                ),
                agreedAt: agreedAt,
                paidAt: paidAt,
                paymentNote: paymentNote,
                sentAt: sentAt,
                shippingNote: shippingNote,
                receivedAt: receivedAt,
                buyerRating: buyerRating,
                sellerRating: sellerRating
            )
        }
    }

}