NavidromeApp/Shared/Models/Models.swift

import Foundation

// MARK: - Server Configuration
struct ServerConfig: Codable, Identifiable, Hashable {
    var id: UUID = UUID()
    var name: String
    var url: String
    var username: String
    var password: String // stored in Keychain in production
    var isActive: Bool = true
    
    var baseURL: URL? { URL(string: url) }
    
    func hash(into hasher: inout Hasher) {
        hasher.combine(id)
    }
}

// MARK: - Subsonic API Response Wrappers
struct SubsonicResponse: Codable {
    let subsonicResponse: SubsonicResponseBody
    
    enum CodingKeys: String, CodingKey {
        case subsonicResponse = "subsonic-response"
    }
}

struct SubsonicResponseBody: Codable {
    let status: String
    let version: String?
    let type: String?
    let serverVersion: String?
    let openSubsonic: Bool?
    let error: SubsonicError?
    
    // Various response types
    let musicFolders: MusicFoldersContainer?
    let indexes: IndexesContainer?
    let artists: ArtistsContainer?
    let artist: ArtistWithAlbums?
    let album: AlbumWithSongs?
    let song: Song?
    let directory: DirectoryContainer?
    let searchResult3: SearchResult3?
    let albumList2: AlbumList2Container?
    let playlists: PlaylistsContainer?
    let playlist: PlaylistWithSongs?
    let genres: GenresContainer?
    let starred2: Starred2Container?
    let nowPlaying: NowPlayingContainer?
    let randomSongs: RandomSongsContainer?
    let scanStatus: ScanStatus?
    let lyrics: LyricsResult?
    let internetRadioStations: InternetRadioContainer?
    let similarSongs2: SimilarSongsContainer?
}

struct SubsonicError: Codable {
    let code: Int
    let message: String
}

// MARK: - Music Folders
struct MusicFoldersContainer: Codable {
    let musicFolder: [MusicFolder]?
}

struct MusicFolder: Codable, Identifiable {
    let id: String
    let name: String?
}

// MARK: - Indexes / Artists
struct IndexesContainer: Codable {
    let index: [ArtistIndex]?
    let lastModified: Int64?
    let ignoredArticles: String?
}

struct ArtistsContainer: Codable {
    let index: [ArtistIndex]?
    let ignoredArticles: String?
}

struct ArtistIndex: Codable, Identifiable {
    let name: String
    let artist: [Artist]?
    
    var id: String { name }
}

struct Artist: Codable, Identifiable {
    let id: String
    let name: String
    let coverArt: String?
    let artistImageUrl: String?
    let albumCount: Int?
    let starred: String?
    let musicBrainzId: String?
    let sortName: String?
}

// MARK: - Albums
struct ArtistWithAlbums: Codable, Identifiable {
    let id: String
    let name: String
    let coverArt: String?
    let albumCount: Int?
    let album: [Album]?
}

struct Album: Codable, Identifiable {
    let id: String
    let name: String
    let artist: String?
    let artistId: String?
    let coverArt: String?
    let songCount: Int?
    let duration: Int?
    let playCount: Int?
    let created: String?
    let starred: String?
    let year: Int?
    let genre: String?
}

struct AlbumWithSongs: Codable, Identifiable {
    let id: String
    let name: String
    let artist: String?
    let artistId: String?
    let coverArt: String?
    let songCount: Int?
    let duration: Int?
    let playCount: Int?
    let created: String?
    let starred: String?
    let year: Int?
    let genre: String?
    let song: [Song]?
}

struct AlbumList2Container: Codable {
    let album: [Album]?
}

// MARK: - Songs
struct Song: Codable, Identifiable {
    let id: String
    let parent: String?
    let isDir: Bool?
    let title: String
    let album: String?
    let artist: String?
    let track: Int?
    let year: Int?
    let genre: String?
    let coverArt: String?
    let size: Int64?
    let contentType: String?
    let suffix: String?
    let transcodedContentType: String?
    let transcodedSuffix: String?
    let duration: Int?
    let bitRate: Int?
    let path: String?
    let playCount: Int?
    let discNumber: Int?
    let created: String?
    let albumId: String?
    let artistId: String?
    let type: String?
    let starred: String?
    let bpm: Int?
    let musicBrainzId: String?
    
    var durationFormatted: String {
        guard let dur = duration else { return "--:--" }
        let min = dur / 60
        let sec = dur % 60
        return String(format: "%d:%02d", min, sec)
    }
}

// MARK: - Directory
struct DirectoryContainer: Codable {
    let id: String
    let name: String?
    let parent: String?
    let child: [Song]?
}

// MARK: - Search
struct SearchResult3: Codable {
    let artist: [Artist]?
    let album: [Album]?
    let song: [Song]?
}

// MARK: - Playlists
struct PlaylistsContainer: Codable {
    let playlist: [Playlist]?
}

struct Playlist: Codable, Identifiable {
    let id: String
    let name: String
    let comment: String?
    let songCount: Int?
    let duration: Int?
    let coverArt: String?
    let owner: String?
    let `public`: Bool?
    let created: String?
    let changed: String?
}

struct PlaylistWithSongs: Codable, Identifiable {
    let id: String
    let name: String
    let comment: String?
    let songCount: Int?
    let duration: Int?
    let coverArt: String?
    let owner: String?
    let `public`: Bool?
    let created: String?
    let changed: String?
    var entry: [Song]?   // var — PlaylistDetailView mutates this for optimistic reorder
}

// MARK: - Genres
struct GenresContainer: Codable {
    let genre: [Genre]?
}

struct Genre: Codable, Identifiable {
    let value: String
    let songCount: Int?
    let albumCount: Int?
    
    var id: String { value }
    
    enum CodingKeys: String, CodingKey {
        case value, songCount, albumCount
    }
}

// MARK: - Starred
struct Starred2Container: Codable {
    let artist: [Artist]?
    let album: [Album]?
    let song: [Song]?
}

// MARK: - Now Playing
struct NowPlayingContainer: Codable {
    let entry: [NowPlayingEntry]?
}

struct NowPlayingEntry: Codable, Identifiable {
    let id: String
    let title: String
    let artist: String?
    let album: String?
    let username: String?
    let minutesAgo: Int?
    let playerId: Int?
    let playerName: String?
}

// MARK: - Random Songs
struct RandomSongsContainer: Codable {
    let song: [Song]?
}

// MARK: - Scan Status
struct ScanStatus: Codable {
    let scanning: Bool
    let count: Int?
}

// MARK: - Lyrics
struct LyricsResult: Codable {
    let artist: String?
    let title: String?
    let value: String?
}

// MARK: - Offline Download
struct DownloadedSong: Codable, Identifiable {
    let id: String
    let serverId: UUID
    let song: Song
    let localPath: String
    let downloadDate: Date
    let fileSize: Int64
}

// MARK: - Internet Radio
struct InternetRadioContainer: Codable {
    let internetRadioStation: [RadioStation]?
}

struct RadioStation: Codable, Identifiable {
    let id: String
    let name: String
    let streamUrl: String
    let homePageUrl: String?
    
    enum CodingKeys: String, CodingKey {
        case id, name, streamUrl, homePageUrl
    }
}

// MARK: - Similar Songs
struct SimilarSongsContainer: Codable {
    let song: [Song]?
}

// MARK: - Companion Library Models
// These map the Companion API /library/* responses.
// They convert to standard Song/Album objects using navidrome_id for stream URLs.

struct CompanionSong: Codable, Identifiable {
    let id:              String   // Companion MD5 song ID
    let navidrome_id:    String?  // Subsonic song ID — used for stream URL
    let title:           String
    let artist:          String
    let album:           String
    let album_artist:    String
    let genre:           String
    let year:            Int?
    let track_number:    Int?
    let disc_number:     Int?
    let duration:        Double?
    let relative_path:   String
    let cover_art_url:   String?  // "/library/cover-art/{id}" path
    let sort_album:      String?
    let sort_artist:     String?
    let date_added:      String?

    /// Convert to the Song type the rest of the app uses.
    /// Song.id = navidrome_id so stream URLs still work.
    /// Song.coverArt = "companion:{id}" so AsyncCoverArt routes to Companion.
    func toSong() -> Song {
        Song(
            id:                   navidrome_id ?? id,
            parent:               nil,
            isDir:                false,
            title:                title,
            album:                album,
            artist:               artist,
            track:                track_number,
            year:                 year,
            genre:                genre.isEmpty ? nil : genre,
            coverArt:             "companion:\(id)",
            size:                 nil,
            contentType:          nil,
            suffix:               (relative_path as NSString).pathExtension.lowercased(),
            transcodedContentType: nil,
            transcodedSuffix:     nil,
            duration:             duration.map { Int($0) },
            bitRate:              nil,
            path:                 relative_path,
            playCount:            nil,
            discNumber:           disc_number,
            created:              date_added,
            albumId:              nil,
            artistId:             nil,
            type:                 "music",
            starred:              nil,
            bpm:                  nil,
            musicBrainzId:        nil
        )
    }
}

struct CompanionAlbum: Codable, Identifiable {
    let album:              String
    let album_artist:       String
    let sort_album:         String?
    let sort_album_artist:  String?
    let year:               Int?
    let track_count:        Int
    let cover_art_url:      String?  // "/library/cover-art/{rep_id}" path

    /// Stable unique identifier: "companion:{album}|{album_artist}"
    var id: String { "companion:\(album)|\(album_artist)" }

    func toAlbum() -> Album {
        Album(
            id:        id,
            name:      album,
            artist:    album_artist,
            artistId:  nil,
            coverArt:  cover_art_url.map { extractCompanionId($0) }.map { "companion:\($0)" },
            songCount: track_count,
            duration:  nil,
            playCount: nil,
            created:   nil,
            starred:   nil,
            year:      year,
            genre:     nil
        )
    }
}

struct CompanionArtist: Codable, Identifiable {
    let artist:      String
    let sort_artist: String?
    let track_count: Int
    let album_count: Int
    let photo_url:   String?

    var id: String { artist }
}

struct CompanionLibraryResponse: Codable {
    let total:    Int
    let page:     Int?
    let per_page: Int?
    let songs:    [CompanionSong]?
    let albums:   [CompanionAlbum]?
    let artists:  [CompanionArtist]?
}

/// Extract the ID portion from a companion path like "/library/cover-art/{id}"
private func extractCompanionId(_ path: String) -> String {
    path.components(separatedBy: "/").last ?? path
}