using back.healthchecks.Options;
using back.Options;
using MCVIngenieros.Healthchecks;
using MCVIngenieros.Healthchecks.Abstracts;
using Microsoft.Extensions.Options;

namespace back.healthchecks;

public class SqliteHealthCheck(IOptionsMonitor<DatabaseConfig> databaseConfig, IOptionsMonitor<HealthChecksConfigs> healthchecksConfig) : HealthCheck
{
    private readonly DatabaseConfig databaseConfig = databaseConfig.Get(DatabaseConfig.DataStorage);
    private readonly HealthChecksConfigs hcConfig = healthchecksConfig.Get(HealthChecksConfigs.Sqlite);

    public string Description => "Conecta con la base de datos SQLite y trata de hacer una consulta sobre la tabla Users.";
    public int? RetryAttempts => hcConfig.RetryAttempts ?? 2;
    public TimeSpan? Timeout => hcConfig.Timeout ?? TimeSpan.FromSeconds(5);
    public TimeSpan? RetryDelay => hcConfig.RetryDelay ?? TimeSpan.FromSeconds(1);
    public HealthCheckSeverity? Severity => hcConfig.Severity ?? HealthCheckSeverity.Critical;

    public override Task<HealthCheckResult> CheckAsync(CancellationToken cancellationToken = default)
    {
        var isHealthy = false;
        var details = string.Empty;
        try
        {
            using var connection = new Microsoft.Data.Sqlite.SqliteConnection(databaseConfig.ConnectionString);
            connection.Open();
            using var command = connection.CreateCommand();
            command.CommandText = $"SELECT COUNT(1) FROM Users WHERE Id = '{DataModels.User.SystemUserId}';";
            var result = command.ExecuteScalar();
            if (result != null && Convert.ToInt32(result) == 1)
            {
                isHealthy = true;
                details = "Connection to SQLite database successful and SystemUser exists.";
            }
            else
            {
                details = "Connection to SQLite database successful but SystemUser does not exist.";
            }
        }
        catch (Exception ex)
        {
            details = $"Failed to connect to SQLite database: {ex.Message}";
        }

        return Task.FromResult(new HealthCheckResult(isHealthy)
        {
            Details = details,
            Severity = isHealthy ? HealthCheckSeverity.Info : HealthCheckSeverity.Critical
        });
    }
}