using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using System.Timers;
using Microsoft.Identity.Client;
using Microsoft.Exchange.WebServices.Data;
using System.IO;
using importer.ImportObjects;

namespace importer
{
    class Program
    {
        private static List<ToDo> _todos;
        private static string _jdislog;
        private static string[] _args;
        public static string[] Args { get { return _args; } set { _args = value; } }
        private static int[] TimeParts(int t)
        {
            string st = t.ToString();
            if (st.Length == 1) st = "0" + st;
            string st1 = st.Substring(0, 1);
            string st2 = st.Substring(1, 1);
            int[] ints = new int[2];
            ints[0] = Convert.ToInt32(st1);
            ints[1] = Convert.ToInt32(st2);
            return ints;

        }

        static async System.Threading.Tasks.Task Main(string[] args)
        {

            bool hasRun = false;
            _args = args;
            Global global = new Global(args);
            if (_args[0] == "brandt")
            {
                _jdislog = Path.Combine(Global.StorageDir, "jdis.log");
                JDISLog.Begin(_jdislog);
                JDISImport.BuildDefaults();
                for (; ; )
                {
                    int minute = DateTime.Now.Minute;
                    int[] timeParts = TimeParts(minute);
                    if (
                        (timeParts[0] == 0 && timeParts[1] == 0) ||
                        (timeParts[0] == 1 && timeParts[1] == 5) ||
                        (timeParts[0] == 3 && timeParts[1] == 0) ||
                        (timeParts[0] == 4 && timeParts[1] == 5) ||
                        (timeParts[0] == 0 && timeParts[1] == 5)
                    )
                    {
                        if (!hasRun)
                        {
                            JDISLog.WriteToLog(_jdislog, string.Format("Beginning Import Procces @ {0} {1}", DateTime.Now.ToShortDateString(), DateTime.Now.ToLongTimeString()));
                            hasRun = true;
                            await MailService();

                        }
                    }
                    else hasRun = false;
                }
            }
            //add more to the if statement to account for other imports
        }
        static async System.Threading.Tasks.Task MailService()
        {
            _todos = new List<ToDo>();
            var cca = ConfidentialClientApplicationBuilder
                .Create(Global.Settings.MailProperties.AppID)
                .WithClientSecret(Global.Settings.MailProperties.SecretV)
                .WithTenantId(Global.Settings.MailProperties.TenentID)
                .Build();

            var ewsScopes = new string[] { Global.Settings.MailProperties.Scope };

            var authResult = await cca.AcquireTokenForClient(ewsScopes)
                    .ExecuteAsync();

            // Configure the ExchangeService with the access token
            var ewsClient = new ExchangeService();
            ewsClient.Url = new Uri(Global.Settings.MailProperties.Url);
            ewsClient.Credentials = new OAuthCredentials(authResult.AccessToken);
            ewsClient.ImpersonatedUserId = new ImpersonatedUserId(ConnectingIdType.SmtpAddress, Global.Settings.MailProperties.Username);
            Mailbox mb = new Mailbox(Global.Settings.MailProperties.Mailbox);
            FolderId fid = new FolderId(WellKnownFolderName.Inbox, mb);
            List<SearchFilter> searchFilterCollection = new List<SearchFilter>();
            string[] filters = Global.Settings.MailProperties.Filter.Split(';');

            foreach (string s in filters)
                searchFilterCollection.Add(new SearchFilter.ContainsSubstring(ItemSchema.Subject, s));

            SearchFilter searchFilter = new SearchFilter.SearchFilterCollection(LogicalOperator.Or, searchFilterCollection.ToArray());
            ItemView view = new ItemView(100);

            view.PropertySet = new PropertySet(BasePropertySet.IdOnly, ItemSchema.Subject, ItemSchema.DateTimeReceived);
            view.OrderBy.Add(ItemSchema.DateTimeReceived, SortDirection.Descending);
            view.Traversal = ItemTraversal.Shallow;
            //Console.WriteLine("Line 90: Finding emails.");

            try
            {
                FindItemsResults<Item> findResults = ewsClient.FindItems(fid, searchFilter, view);

                List<EmailMessage> messages = new List<EmailMessage>();
                foreach (EmailMessage message in findResults.Items)
                {
                    message.Load();
                    if (!message.IsRead)
                        messages.Add(message);
                }
                foreach (EmailMessage msg in messages)
                {
                    if (msg.HasAttachments)
                    {
                        foreach (Attachment attachment in msg.Attachments)
                        {
                            attachment.Load();
                            if (attachment is FileAttachment)
                            {
                                ToDo todo = new ToDo();
                                todo.Sender = msg.Sender.Address;

                                todo.SenderName = msg.Sender.Name;
                                todo.FileName = attachment.Name;
                                _todos.Add(todo);
                                //Download File
                                FileAttachment fAttachment = attachment as FileAttachment;
                                string fileAttachmentPath = Path.Combine(Global.StorageDir, fAttachment.Name);
                                File.WriteAllBytes(fileAttachmentPath, fAttachment.Content);
                                msg.IsRead = true;
                                msg.Update(ConflictResolutionMode.AlwaysOverwrite);
                                msg.Move(WellKnownFolderName.DeletedItems);
                            }
                        }
                    }
                }
                JDISImport.BeginImport(_todos);
                foreach (ToDo sendMsg in _todos)
                {
                    EmailMessage msgToSend = new EmailMessage(ewsClient);
                    //JDISLog.WriteToLog(_logFile, string.Format("Sending Message to: {0}\r\nFor Work Order: {1}\r\nJDIS File: {2}", sendMsg.Sender, sendMsg.WorkOrderNumber, sendMsg.FileName.Substring(sendMsg.FileName.LastIndexOf("/") + 1).Trim()));
                    string body = "JDIS File: {0} Work Order:{1} {2}";
                    if (sendMsg.Success)
                    {
                        body = string.Format(body, sendMsg.FileName.Substring(sendMsg.FileName.LastIndexOf("/") + 1).Trim(), sendMsg.WorkOrderNumber, "Was Imported Successfully");
                    }
                    else
                    {
                        body = string.Format(body, sendMsg.FileName.Substring(sendMsg.FileName.LastIndexOf("/") + 1).Trim(), sendMsg.WorkOrderNumber, string.Format("Had Errors while importing: {0}", sendMsg.Validation));
                        msgToSend.Attachments.AddFileAttachment(Path.Combine(Global.StorageDir, sendMsg.FileName));

                    }
                    string fileNameOnly = sendMsg.FileName.Substring(sendMsg.FileName.LastIndexOf("/") + 1);
                    msgToSend.Subject = fileNameOnly;
                    msgToSend.ToRecipients.Add(new EmailAddress(sendMsg.Sender));
                    msgToSend.CcRecipients.Add(new EmailAddress("mcarman@rpmindustries.com"));
                    msgToSend.Body = body;
                    msgToSend.SendAndSaveCopy();
                    string pathToFile = Path.Combine(Global.StorageDir, sendMsg.FileName);
                    if (sendMsg.Success)
                    {
                        File.Move(pathToFile, Path.Combine(Global.StorageDir, "success", sendMsg.FileName), true);
                        JDISLog.WriteToLog(_jdislog, string.Format("Work Order: {0} Successfully Imported from {1} on {2} {3}", sendMsg.WorkOrderNumber, sendMsg.FileName, DateTime.Now.ToShortTimeString(), DateTime.Now.ToLongTimeString()));
                    }
                    else
                    {
                        File.Move(sendMsg.FileName, Path.Combine(Global.StorageDir, "failure", sendMsg.FileName), true);
                        JDISLog.WriteToLog(_jdislog, string.Format("Work Order: {0} Failed to Import from {1} on {2} {3}", sendMsg.WorkOrderNumber, sendMsg.FileName, DateTime.Now.ToShortTimeString(), DateTime.Now.ToLongTimeString()));
                    }
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
        }
    }
    public class ToDo
    {
        public string Sender { get; set; }
        public string SenderName { get; set; }
        public string FileName { get; set; }
        public string PathToFile { get; set; }
        public string WorkOrderNumber { get; set; }
        public bool Success { get; set; }
        public string Validation { get; set; }
        public WorkOrderImport WorkOrder { get; set; }
        public CustomerImport Customer { get; set; }
        public EquipmentImport Equipment { get; set; }
        public List<PartImport> Parts { get; set; }
    }
}