import Foundation

/// Browse-Eintrag aus `/api/v1/marketplace/decks` und `.../explore`.
struct PublicDeckEntry: Codable, Hashable, Identifiable {
    let slug: String
    let title: String
    let description: String?
    let language: String?
    let category: String?
    let license: String
    let priceCredits: Int
    let cardCount: Int
    let starCount: Int
    let subscriberCount: Int
    let isFeatured: Bool
    let createdAt: Date
    let owner: PublicDeckOwner

    var id: String {
        slug
    }

    enum CodingKeys: String, CodingKey {
        case slug, title, description, language, category, license
        case priceCredits = "price_credits"
        case cardCount = "card_count"
        case starCount = "star_count"
        case subscriberCount = "subscriber_count"
        case isFeatured = "is_featured"
        case createdAt = "created_at"
        case owner
    }

    var isPaid: Bool {
        priceCredits > 0
    }
}

struct PublicDeckOwner: Codable, Hashable {
    let slug: String
    let displayName: String
    let verifiedMana: Bool
    let verifiedCommunity: Bool
    /// Flag: Autor tritt pseudonym auf (Anzeigename verbergen).
    /// Server-Schema ist `boolean NOT NULL DEFAULT false`. War in v0.8.x
    /// fälschlich als `String?` (Anzeige-Pseudonym) interpretiert —
    /// führte zu Decoder-typeMismatch beim Öffnen eines Marketplace-Decks.
    let pseudonym: Bool

    enum CodingKeys: String, CodingKey {
        case slug
        case displayName = "display_name"
        case verifiedMana = "verified_mana"
        case verifiedCommunity = "verified_community"
        case pseudonym
    }

    init(from decoder: Decoder) throws {
        let c = try decoder.container(keyedBy: CodingKeys.self)
        slug = try c.decode(String.self, forKey: .slug)
        displayName = try c.decode(String.self, forKey: .displayName)
        verifiedMana = try c.decode(Bool.self, forKey: .verifiedMana)
        verifiedCommunity = try c.decode(Bool.self, forKey: .verifiedCommunity)
        pseudonym = (try? c.decode(Bool.self, forKey: .pseudonym)) ?? false
    }
}

/// Response von `GET /api/v1/marketplace/explore`.
struct ExploreResponse: Decodable {
    let featured: [PublicDeckEntry]
    let trending: [PublicDeckEntry]
}

/// Response von `GET /api/v1/marketplace/decks`.
struct BrowseResponse: Decodable {
    let items: [PublicDeckEntry]
    let total: Int
}

/// Vollständiges Public-Deck aus `GET /api/v1/marketplace/decks/:slug`.
struct PublicDeck: Codable, Hashable, Identifiable {
    let id: String
    let slug: String
    let title: String
    let description: String?
    let language: String?
    let category: String?
    let license: String
    let priceCredits: Int
    let ownerUserId: String
    let latestVersionId: String?
    let isFeatured: Bool
    let isTakedown: Bool
    let createdAt: Date

    enum CodingKeys: String, CodingKey {
        case id, slug, title, description, language, category, license
        case priceCredits = "price_credits"
        case ownerUserId = "owner_user_id"
        case latestVersionId = "latest_version_id"
        case isFeatured = "is_featured"
        case isTakedown = "is_takedown"
        case createdAt = "created_at"
    }
}

struct PublicDeckVersion: Codable, Hashable, Identifiable {
    let id: String
    let deckId: String
    let semver: String
    let changelog: String?
    let contentHash: String?
    let cardCount: Int
    let publishedAt: Date
    let deprecatedAt: Date?

    enum CodingKeys: String, CodingKey {
        case id
        case deckId = "deck_id"
        case semver
        case changelog
        case contentHash = "content_hash"
        case cardCount = "card_count"
        case publishedAt = "published_at"
        case deprecatedAt = "deprecated_at"
    }
}

/// Response von `GET /api/v1/marketplace/decks/:slug`.
struct PublicDeckDetail: Decodable {
    let deck: PublicDeck
    let latestVersion: PublicDeckVersion?
    let owner: PublicDeckOwner?

    enum CodingKeys: String, CodingKey {
        case deck
        case latestVersion = "latest_version"
        case owner
    }
}

/// Response von `POST /api/v1/marketplace/decks/:slug/subscribe`.
struct SubscribeResponse: Decodable {
    let subscribed: Bool
    let deckSlug: String
    let currentVersionId: String?
    let privateDeckId: String

    enum CodingKeys: String, CodingKey {
        case subscribed
        case deckSlug = "deck_slug"
        case currentVersionId = "current_version_id"
        case privateDeckId = "private_deck_id"
    }
}

/// Browse-Sort-Optionen aus `BrowseQuerySchema`.
enum MarketplaceSort: String, CaseIterable {
    case recent
    case popular
    case trending

    var label: String {
        switch self {
        case .recent: "Neueste"
        case .popular: "Beliebt"
        case .trending: "Im Trend"
        }
    }
}