namespace GmRelay.Bot.Features.Sessions.RescheduleSession;

internal enum RescheduleVoteOutcome
{
    Pending,
    Rejected,
    Approved
}

internal sealed record RescheduleVoteDecision(
    RescheduleVoteOutcome Outcome,
    string CallbackText,
    bool ShouldRescheduleSession,
    bool ShouldResetParticipantRsvps);

internal static class RescheduleVoteRules
{
    public static RescheduleVoteDecision Evaluate(string vote, int totalParticipants, int approvedParticipants)
    {
        if (string.Equals(vote, "no", StringComparison.OrdinalIgnoreCase))
        {
            return new RescheduleVoteDecision(
                Outcome: RescheduleVoteOutcome.Rejected,
                CallbackText: "\u0412\u044b \u043f\u0440\u043e\u0433\u043e\u043b\u043e\u0441\u043e\u0432\u0430\u043b\u0438 \u043f\u0440\u043e\u0442\u0438\u0432 \u043f\u0435\u0440\u0435\u043d\u043e\u0441\u0430.",
                ShouldRescheduleSession: false,
                ShouldResetParticipantRsvps: false);
        }

        var everyoneApproved = approvedParticipants == totalParticipants;

        return new RescheduleVoteDecision(
            Outcome: everyoneApproved ? RescheduleVoteOutcome.Approved : RescheduleVoteOutcome.Pending,
            CallbackText: everyoneApproved
                ? "\u0412\u044b \u043f\u043e\u0434\u0442\u0432\u0435\u0440\u0434\u0438\u043b\u0438 \u043f\u0435\u0440\u0435\u043d\u043e\u0441! \u0412\u0441\u0435 \u0441\u043e\u0433\u043b\u0430\u0441\u043d\u044b \u2014 \u0432\u0440\u0435\u043c\u044f \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u043e."
                : "\u0412\u044b \u043f\u043e\u0434\u0442\u0432\u0435\u0440\u0434\u0438\u043b\u0438 \u043f\u0435\u0440\u0435\u043d\u043e\u0441!",
            ShouldRescheduleSession: everyoneApproved,
            ShouldResetParticipantRsvps: everyoneApproved);
    }
}