import Defaults
import Foundation
import SwiftUI
#if os(iOS)
    import UIKit
#endif

extension Defaults.Keys {
    #if os(tvOS)
        static let defaultForPauseOnHidingPlayer = true
    #else
        static let defaultForPauseOnHidingPlayer = false
    #endif

    #if os(macOS)
        static let defaultForPlayerDetailsPageButtonLabelStyle = PlayerDetailsPageButtonLabelStyle.iconAndText
    #else
        static let defaultForPlayerDetailsPageButtonLabelStyle = UIDevice.current.userInterfaceIdiom == .phone ? PlayerDetailsPageButtonLabelStyle.iconOnly : .iconAndText
    #endif

    static let kavinPipedInstanceID = "kavin-piped"
    static let instances = Key<[Instance]>("instances", default: [
        .init(
            app: .piped,
            id: kavinPipedInstanceID,
            name: "Kavin",
            apiURL: "https://pipedapi.kavin.rocks",
            frontendURL: "https://piped.kavin.rocks"
        )
    ])
    static let accounts = Key<[Account]>("accounts", default: [])
    static let lastAccountID = Key<Account.ID?>("lastAccountID")
    static let lastInstanceID = Key<Instance.ID?>("lastInstanceID")
    static let lastUsedPlaylistID = Key<Playlist.ID?>("lastPlaylistID")

    static let sponsorBlockInstance = Key<String>("sponsorBlockInstance", default: "https://sponsor.ajay.app")
    static let sponsorBlockCategories = Key<Set<String>>("sponsorBlockCategories", default: Set(SponsorBlockAPI.categories))

    static let enableReturnYouTubeDislike = Key<Bool>("enableReturnYouTubeDislike", default: false)

    static let favorites = Key<[FavoriteItem]>("favorites", default: [
        .init(section: .channel("UCE_M8A5yxnLfW0KghEeajjw", "Apple"))
    ])

    #if !os(tvOS)
        static let accountPickerDisplaysUsername = Key<Bool>("accountPickerDisplaysUsername", default: false)
    #endif
    #if os(iOS)
        static let lockPortraitWhenBrowsing = Key<Bool>("lockPortraitWhenBrowsing", default: UIDevice.current.userInterfaceIdiom == .phone)
    #endif
    static let channelOnThumbnail = Key<Bool>("channelOnThumbnail", default: true)
    static let timeOnThumbnail = Key<Bool>("timeOnThumbnail", default: true)
    static let roundedThumbnails = Key<Bool>("roundedThumbnails", default: true)
    static let thumbnailsQuality = Key<ThumbnailsQuality>("thumbnailsQuality", default: .highest)

    static let activeBackend = Key<PlayerBackendType>("activeBackend", default: .mpv)
    static let quality = Key<ResolutionSetting>("quality", default: .best)
    static let playerSidebar = Key<PlayerSidebarSetting>("playerSidebar", default: PlayerSidebarSetting.defaultValue)
    static let playerInstanceID = Key<Instance.ID?>("playerInstance")
    static let showKeywords = Key<Bool>("showKeywords", default: false)
    static let showHistoryInPlayer = Key<Bool>("showHistoryInPlayer", default: false)
    static let commentsInstanceID = Key<Instance.ID?>("commentsInstance", default: kavinPipedInstanceID)
    #if !os(tvOS)
        static let commentsPlacement = Key<CommentsPlacement>("commentsPlacement", default: .separate)
    #endif
    static let pauseOnHidingPlayer = Key<Bool>("pauseOnHidingPlayer", default: defaultForPauseOnHidingPlayer)
    static let closeLastItemOnPlaybackEnd = Key<Bool>("closeLastItemOnPlaybackEnd", default: false)

    static let closePiPOnNavigation = Key<Bool>("closePiPOnNavigation", default: false)
    static let closePiPOnOpeningPlayer = Key<Bool>("closePiPOnOpeningPlayer", default: false)
    #if !os(macOS)
        static let closePiPAndOpenPlayerOnEnteringForeground = Key<Bool>("closePiPAndOpenPlayerOnEnteringForeground", default: false)
    #endif

    static let recentlyOpened = Key<[RecentItem]>("recentlyOpened", default: [])

    static let queue = Key<[PlayerQueueItem]>("queue", default: [])
    static let lastPlayed = Key<PlayerQueueItem?>("lastPlayed")

    static let saveHistory = Key<Bool>("saveHistory", default: true)
    static let showWatchingProgress = Key<Bool>("showWatchingProgress", default: true)
    static let watchedThreshold = Key<Int>("watchedThreshold", default: 90)
    static let watchedVideoStyle = Key<WatchedVideoStyle>("watchedVideoStyle", default: .badge)
    static let watchedVideoBadgeColor = Key<WatchedVideoBadgeColor>("WatchedVideoBadgeColor", default: .red)
    static let watchedVideoPlayNowBehavior = Key<WatchedVideoPlayNowBehavior>("watchedVideoPlayNowBehavior", default: .continue)
    static let resetWatchedStatusOnPlaying = Key<Bool>("resetWatchedStatusOnPlaying", default: false)
    static let saveRecents = Key<Bool>("saveRecents", default: true)

    static let trendingCategory = Key<TrendingCategory>("trendingCategory", default: .default)
    static let trendingCountry = Key<Country>("trendingCountry", default: .us)

    static let visibleSections = Key<Set<VisibleSection>>("visibleSections", default: [.favorites, .subscriptions, .trending, .playlists])

    #if os(iOS)
        static let honorSystemOrientationLock = Key<Bool>("honorSystemOrientationLock", default: true)
        static let enterFullscreenInLandscape = Key<Bool>("enterFullscreenInLandscape", default: UIDevice.current.userInterfaceIdiom == .phone)
        static let lockOrientationInFullScreen = Key<Bool>("lockOrientationInFullScreen", default: false)
    #endif

    static let showMPVPlaybackStats = Key<Bool>("showMPVPlaybackStats", default: false)

    static let playerDetailsPageButtonLabelStyle = Key<PlayerDetailsPageButtonLabelStyle>("playerDetailsPageButtonLabelStyle", default: defaultForPlayerDetailsPageButtonLabelStyle)
}

enum ResolutionSetting: String, CaseIterable, Defaults.Serializable {
    case best
    case hd2160p60
    case hd2160p30
    case hd1440p60
    case hd1440p30
    case hd1080p60
    case hd1080p30
    case hd720p60
    case hd720p30
    case sd480p30
    case sd360p30
    case sd240p30
    case sd144p30

    var value: Stream.Resolution {
        switch self {
        case .best:
            return .hd2160p60
        default:
            return Stream.Resolution(rawValue: rawValue)!
        }
    }

    var description: String {
        switch self {
        case .best:
            return "Best available quality"
        case .hd2160p60:
            return "4K, 60fps"
        case .hd2160p30:
            return "4K"
        default:
            return value.name
        }
    }
}

enum PlayerSidebarSetting: String, CaseIterable, Defaults.Serializable {
    case always, whenFits, never

    static var defaultValue: Self {
        #if os(macOS)
            .always
        #else
            .whenFits
        #endif
    }
}

enum VisibleSection: String, CaseIterable, Comparable, Defaults.Serializable {
    case favorites, subscriptions, popular, trending, playlists

    var title: String {
        rawValue.localizedCapitalized
    }

    var tabSelection: TabSelection {
        switch self {
        case .favorites:
            return TabSelection.favorites
        case .subscriptions:
            return TabSelection.subscriptions
        case .popular:
            return TabSelection.popular
        case .trending:
            return TabSelection.trending
        case .playlists:
            return TabSelection.playlists
        }
    }

    private var sortOrder: Int {
        switch self {
        case .favorites:
            return 0
        case .subscriptions:
            return 1
        case .popular:
            return 2
        case .trending:
            return 3
        case .playlists:
            return 4
        }
    }

    static func < (lhs: Self, rhs: Self) -> Bool {
        lhs.sortOrder < rhs.sortOrder
    }
}

enum WatchedVideoStyle: String, Defaults.Serializable {
    case nothing, badge, decreasedOpacity, both
}

enum WatchedVideoBadgeColor: String, Defaults.Serializable {
    case colorSchemeBased, red, blue
}

enum WatchedVideoPlayNowBehavior: String, Defaults.Serializable {
    case `continue`, restart
}

#if !os(tvOS)
    enum CommentsPlacement: String, CaseIterable, Defaults.Serializable {
        case info, separate
    }
#endif

enum PlayerDetailsPageButtonLabelStyle: String, CaseIterable, Defaults.Serializable {
    case iconOnly, iconAndText

    var text: Bool {
        self == .iconAndText
    }
}

enum ThumbnailsQuality: String, CaseIterable, Defaults.Serializable {
    case highest, medium, low
}