namespace CollabBLL;

public static class CollabConstants
{
    public static readonly string[] CursorColors =
    [
        "#E53E3E", "#3182CE", "#38A169", "#805AD5",
        "#DD6B20", "#D69E2E", "#00B5D8", "#D53F8C",
        "#319795", "#744210"
    ];

    public static class Roles
    {
        public const string Host      = "Host";
        public const string Presenter = "Presenter";
        public const string CoEditor  = "CoEditor";
        public const string Viewer    = "Viewer";
    }

    public static class Status
    {
        public const string Pending   = "Pending";
        public const string Active    = "Active";
        public const string Paused    = "Paused";
        public const string Ended     = "Ended";
        public const string Abandoned = "Abandoned";
    }

    public static class EventTypes
    {
        public const string SessionCreated    = "SessionCreated";
        public const string SessionStarted    = "SessionStarted";
        public const string SessionPaused     = "SessionPaused";
        public const string SessionResumed    = "SessionResumed";
        public const string SessionEnded      = "SessionEnded";
        public const string ParticipantJoined = "ParticipantJoined";
        public const string ParticipantLeft   = "ParticipantLeft";
        public const string ControlGranted    = "ControlGranted";
        public const string ControlRevoked    = "ControlRevoked";
        public const string ControlRequested  = "ControlRequested";
        public const string InviteSent        = "InviteSent";
        public const string InviteAccepted    = "InviteAccepted";
        public const string InviteDeclined    = "InviteDeclined";
    }

    public static class CacheTypes
    {
        public const string Session     = "CollabSession";
        public const string SessionList = "CollabSessionList";
        public const string Invite      = "CollabInvite";
        public const string Config      = "CollabConfig";
    }

    /// <summary>Generates a unique 2-letter + 4-digit session code e.g. "XK-4291".</summary>
    public static string GenerateSessionCode()
    {
        int  n = Random.Shared.Next(0, 676);
        int  d = Random.Shared.Next(1000, 9999);
        char a = (char)('A' + n / 26);
        char b = (char)('A' + n % 26);
        return $"{a}{b}-{d}";
    }
}