using System;
using System.Configuration;
using System.IO;
using FileInterface.Scheduler;

namespace FileinterfaceCronScheduler
{
    internal static class RuntimeFactory
    {
        public static SchedulerRuntime Create()
        {
            string baseDir = AppDomain.CurrentDomain.BaseDirectory;
            string cronConfigFile = Get("Scheduler.ConfigFile", "cronjobs.json");
            string watcherConfigFile = Get("Watcher.ConfigFile", "watcherjobs.json");

            if (!Path.IsPathRooted(cronConfigFile)) cronConfigFile = Path.Combine(baseDir, cronConfigFile);
            if (!Path.IsPathRooted(watcherConfigFile)) watcherConfigFile = Path.Combine(baseDir, watcherConfigFile);

            var options = new SchedulerOptions
            {
                ConfigFile = cronConfigFile,
                WatcherConfigFile = watcherConfigFile,
                WebPrefix = Get("Scheduler.WebPrefix", "http://127.0.0.1:8095/"),
                WebUser = Get("Scheduler.WebUser", "admin"),
                WebPassword = Get("Scheduler.WebPassword", "admin")
            };

            var invoker = new ImsCustomFunctionInvoker();
            try
            {
                invoker.Connect();
                return new SchedulerRuntime(invoker, options, invoker);
            }
            catch
            {
                invoker.Dispose();
                throw;
            }
        }

        private static string Get(string key, string fallback)
        {
            string value = ConfigurationManager.AppSettings[key];
            return String.IsNullOrWhiteSpace(value) ? fallback : value.Trim();
        }
    }
}