using CollabDAL.CustomCode.CollabConfig;
using CollabDAL.DTO.CollabConfig;
using GB5Shared.DaprCache;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.EventLogPublish;
using GB5Shared.GB5Constant;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;

namespace CollabBLL.CollabConfig;

public class CollabConfigBLL(
    ICollabConfigDAL          _configDal,
    KeyInvalidate             _keyInvalidate,
    EventLogPublish           _eventLog,
    ILogger<CollabConfigBLL>  _logger
) : ICollabConfigBLL
{
    // ── GET CONFIG ────────────────────────────────────────────────────
    public async Task<string> GetConfigAsync(LoginDTO login, CancellationToken ct)
    {
        var config = await _configDal.GetConfigAsync(login, ct).ConfigureAwait(false)
                     ?? CollabConfigDTO.Default;

        return JsonConvert.SerializeObject(config.ToClientDTO());
    }

    // ── UPDATE CONFIG ─────────────────────────────────────────────────
    public async Task<string> UpdateConfigAsync(
        UpdateCollabConfigSaveDTO dto, LoginDTO login, CancellationToken ct)
    {
        if (dto.MaxParticipantsDefault <= 0)
            throw new InvalidOperationException("MaxParticipantsDefault must be greater than zero.");
        if (dto.MaxParticipantsAbsolute < dto.MaxParticipantsDefault)
            throw new InvalidOperationException("MaxParticipantsAbsolute must be >= MaxParticipantsDefault.");
        if (dto.SessionTimeoutMinutes <= 0)
            throw new InvalidOperationException("SessionTimeoutMinutes must be greater than zero.");
        if (dto.InviteLinkExpiryMinutes <= 0)
            throw new InvalidOperationException("InviteLinkExpiryMinutes must be greater than zero.");

        await _configDal.UpsertConfigAsync(dto, login, ct).ConfigureAwait(false);

        await _eventLog.PublishEventLogAsync(
            "Collaboration Config Updated",
            dto,
            Constant.EventTypeConstant.SAVEDOCUMENTSET,
            0,
            login).ConfigureAwait(false);

        var cacheKey = new CacheKeyGeneration().KeyGeneration(
            login.DatabaseName,
            Constant.EntityConstant.OBJECTCOLLABCONFIG,
            Constant.CacheKeyLevel.CLIENT_LEVEL,
            login);
        await _keyInvalidate.InvalidateCache(cacheKey).ConfigureAwait(false);

        return JsonConvert.SerializeObject(new { Success = true });
    }
}