using HrynCo.NotificationService.DAL.Abstract.Providers;
using HrynCo.NotificationService.DAL.Abstract.Repositories;
using HrynCo.NotificationService.Services.Core;
using HrynCo.NotificationService.Services.Logging;
using static HrynCo.NotificationService.Services.Core.ServiceResultHelper;

namespace HrynCo.NotificationService.Services.EmailChannels.Create;

internal sealed class CreateEmailChannelHandler
    : RequestHandler<CreateEmailChannelCommand, ServiceResult<Guid>>
{
    private readonly IEmailChannelRepository _channels;
    private readonly INotificationServiceRepository _services;

    public CreateEmailChannelHandler(
        IContextualSerilogLogger<CreateEmailChannelCommand> logger,
        IEmailChannelRepository channels,
        INotificationServiceRepository services)
        : base(logger)
    {
        _channels = channels;
        _services = services;
    }

    protected override async Task<ServiceResult<Guid>> DoOnHandle(
        CreateEmailChannelCommand request, CancellationToken cancellationToken)
    {
        if (request.ServiceId == Guid.Empty || await _services.GetAsync(request.ServiceId, cancellationToken) is null)
            return Failure<Guid>("Select an existing service.", ServiceErrorCode.InvalidRequest);

        var channel = new EmailChannel
        {
            ServiceId = request.ServiceId,
            Priority = request.Priority,
            EmailChannelType = request.ChannelType,
            Settings = request.Settings,
            DailyLimit = request.DailyLimit,
            MonthlyLimit = request.MonthlyLimit,
            WarnThresholdPercent = request.WarnThresholdPercent,
            IsActive = request.IsActive
        };

        await _channels.AddAsync(channel, cancellationToken);

        return Success(channel.Id);
    }
}