import FluentKit
import Foundation

/// A FluentKit model of a single `conversations` row: a buyer and a shop, talking about a listing or the shop at large.
final class ConversationRecord: Model, @unchecked Sendable {

    // MARK: Properties

    static let schema = "conversations"

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

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

    @Parent(key: "shop_id")
    var shop: ShopRecord

    @OptionalParent(key: "listing_id")
    var listing: ListingRecord?

    @Field(key: "created_at")
    var createdAt: Date

    /// When the buyer last opened the conversation; what came later is unread to them.
    @Field(key: "buyer_read_at")
    var buyerReadAt: Date

    /// When the seller last opened the conversation; what came later is unread to them.
    @Field(key: "seller_read_at")
    var sellerReadAt: Date

    @Children(for: \.$conversation)
    var messages: [MessageRecord]

    @Children(for: \.$conversation)
    var offers: [OfferRecord]

    @Children(for: \.$conversation)
    var sales: [SaleRecord]

    // MARK: Initializers

    init() {}

    init(
        buyerID: UUID,
        shopID: UUID,
        listingID: UUID?,
        at date: Date
    ) {
        self.$buyer.id = buyerID
        self.$shop.id = shopID
        self.$listing.id = listingID
        self.createdAt = date
        self.buyerReadAt = date
        self.sellerReadAt = date
    }

}