namespace Pilz.Features;

public abstract class PluginFunction : PluginFeature
{
    protected PluginFunction(string type, string identifier) : base(type, identifier)
    {
    }

    protected PluginFunction(string type, string identifier, string? name) : base(type, identifier, name)
    {
    }

    public virtual object? Execute()
    {
        return Execute((PluginFunctionParameter?)null);
    }

    public virtual T? Execute<T>(params object?[]? @params)
    {
        return Execute<T>(new PluginFunctionSimpleParamter(@params));
    }

    public virtual object? Execute(params object?[]? @params)
    {
        return Execute(new PluginFunctionSimpleParamter(@params));
    }

    public virtual T? Execute<T>(PluginFunctionSimpleParamter? @params)
    {
        if (Execute(@params) is T result)
            return result;
        return default;
    }

    public virtual object? Execute(PluginFunctionParameter? @params)
    {
        object? result = null;

        if (OnPreExecute(@params, ref result))
            result = ExecuteFunction(@params);

        OnPostExecute(@params, ref result);

        return result;
    }
    
    public virtual Task<object?> ExecuteAsync()
    {
        return ExecuteAsync((PluginFunctionParameter?)null);
    }

    public virtual Task<T?> ExecuteAsync<T>(params object?[]? @params)
    {
        return ExecuteAsync<T>(new PluginFunctionSimpleParamter(@params));
    }

    public virtual Task<object?> ExecuteAsync(params object?[]? @params)
    {
        return ExecuteAsync(new PluginFunctionSimpleParamter(@params));
    }

    public virtual async Task<T?> ExecuteAsync<T>(PluginFunctionSimpleParamter? @params)
    {
        if (await ExecuteAsync(@params) is T result)
            return result;
        return default;
    }

    public virtual async Task<object?> ExecuteAsync(PluginFunctionParameter? @params)
    {
        object? result = null;

        if (OnPreExecute(@params, ref result))
            result = await ExecuteFunctionAsync(@params);

        OnPostExecute(@params, ref result);

        return result;
    }
    
    protected virtual object? ExecuteFunction(PluginFunctionParameter? @params)
    {
        return ExecuteFunctionAsync(@params).GetAwaiter().GetResult();
    }

    protected virtual Task<object?> ExecuteFunctionAsync(PluginFunctionParameter? @params)
    {
        return Task.FromResult(ExecuteFunction(@params));
    }
}