using GB5Shared.DaprCache;
using GB5Shared.DTO.Framework.Login;
using Microsoft.Extensions.Logging;
using PERMBLL.Interfaces;
using PERMDAL.Interfaces;
using static GB5Shared.GB5Constant.Constant;

namespace PERMBLL.Implementations;

public class PermConfigBLL : IPermConfigBLL
{
    private readonly IPermConfigDAL          _dal;
    private readonly ILogger<PermConfigBLL>  _logger;

    // Default thresholds — used when no config row exists for a tenant
    private const decimal DefaultSelfWeight    = 0.30m;  // 30%
    private const decimal DefaultPIPThreshold  = 40.0m;
    private const decimal DefaultTNAThreshold  = 60.0m;

    public PermConfigBLL(IPermConfigDAL dal, ILogger<PermConfigBLL> logger)
    {
        _dal    = dal;
        _logger = logger;
    }

    public async Task<decimal> GetSelfWeightAsync(LoginDTO login, CancellationToken ct)
    {
        var raw = await _dal.GetConfigValueAsync("SelfWeightDefault", login, ct).ConfigureAwait(false);
        if (decimal.TryParse(raw, out decimal value))
            return value / 100m; // stored as 30, returned as 0.30
        _logger.LogWarning("SelfWeightDefault not configured for tenant {ClientId}, using default", login.ClientId);
        return DefaultSelfWeight;
    }

    public async Task<decimal> GetPIPThresholdAsync(LoginDTO login, CancellationToken ct)
    {
        var raw = await _dal.GetConfigValueAsync("PIPTriggerThreshold", login, ct).ConfigureAwait(false);
        if (decimal.TryParse(raw, out decimal value))
            return value;
        return DefaultPIPThreshold;
    }

    public async Task<decimal> GetTNAThresholdAsync(LoginDTO login, CancellationToken ct)
    {
        var raw = await _dal.GetConfigValueAsync("TNAGapThreshold", login, ct).ConfigureAwait(false);
        if (decimal.TryParse(raw, out decimal value))
            return value;
        return DefaultTNAThreshold;
    }
}