sing NextGen.Mobile.UITests.Barcodes;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Threading;
using Xamarin.UITest;
using Query = System.Func;

namespace NextGen.Mobile.UITests
{
    public abstract class BasePage
    {
        private readonly List locations;
        public readonly IApp app;

        protected BasePage(IApp app)
        {
            locations = new Locations().GetLocations();
            this.app = app;
        }

        public void ScanBarcode(string barcode)
        {
            Thread.Sleep(1000);
            if (!app.Invoke("SendScan", barcode).ToString().Equals("true"))
            {
                Thread.Sleep(2500);
                app.Invoke("SendScan", barcode);
            }
        }

        // Used to verify success of selection or barcode scan
        public bool VerifyScanOrSelection(string item)
        {
            // app cannot see element if user cannot see it.
            ScrollToItem(item);

            var success = app.Query(x => x.Marked(item).All().Sibling().Marked("IsCompleted"))[0].Text;
            Debug.WriteLine("Item selected is successful??? " + success);
            return (success != null && success.Length > 0 && success.Equals("true"));
        }

        public BasePage ScanPrePostItem(string itemName, string itemBarcode)
        {
            WaitForElement(x => x.Marked(itemName), "Unable to locate preroute item from list.", 1000);
            ScanBarcode(itemBarcode);
            VerifyScanOrSelection(itemName);
            return this;
        }



        public BasePage ScrollToItem(string item)
        {
            try
            {
                app.ScrollDownTo(item);
            }
            catch (Exception)
            {
                try
                {
                    app.ScrollUpTo(item);
                }
                catch (Exception) { }
            }
            return this;
        }

        protected string GetLocationBarcodeFor(string locationName)
        {
            string locationBarcode = null;
            foreach (Location lc in locations)
            {
                if (lc.LocationName.Equals(locationName))
                {
                    locationBarcode = lc.LocationBarcode;
                }
            }
            return locationBarcode;
        }

        protected IEnumerable GetSublocationsFor(string locationName)
        {
            return
                from lc in locations
                where lc.LocationName.Equals(locationName)
                select lc.SublocationBarcode;
        }

        protected IEnumerable GetSublocationNameFor(string locationName)
        {
            return
                from lc in locations
                where lc.LocationName.Equals(locationName)
                select lc.SublocationName;
        }

        protected IEnumerable GetSublocationTempFor(string locationName)
        {
            return
                from lc in locations
                where lc.LocationName.Equals(locationName)
                select lc.SublocationTemp;
        }

        public BasePage Select(Query element, string timeoutMsg, int millisecondsBeforeTap = 5000)
        {
            WaitForElement(element, timeoutMsg, millisecondsBeforeTap);
            app.Tap(element);
            return this;
        }

        public BasePage WaitForElement(Query query, string timeoutMsg, int millisecondsBeforeTap = 5000)
        {
            TimeSpan timeOut = new TimeSpan(0, 0, 0, 15); // timeout after 15 seconds of not finding anything
            TimeSpan retryFrequency = new TimeSpan(0, 0, 0, 0, 500); // retry every half second
            TimeSpan postTimeOut = new TimeSpan(0, 0, 0, 0, millisecondsBeforeTap);
            app.WaitForElement(query, timeoutMsg, timeOut, retryFrequency, postTimeOut);

            return this;
        }


        public BasePage WaitForNoElement(Query query, string msg, int millisecondsBeforeTap = 5000)
        {
            TimeSpan timeOut = new TimeSpan(0, 0, 0, 15); // timeout after 15 seconds of not finding anything
            TimeSpan retryFrequency = new TimeSpan(0, 0, 0, 0, 500); // retry every half second
            TimeSpan postTimeOut = new TimeSpan(0, 0, 0, 0, millisecondsBeforeTap);
            app.WaitForElement(query, msg, timeOut, retryFrequency, postTimeOut);

            return this;
        }

        public bool IsOnPage(string pageTitle)
        {
            return pageTitle.Equals(app.Query(x => x.Class("AppCompatTextView"))[0].Text);
        }

        public bool IsSelectionPresentInField(string fieldName, string expectedText)
        {
            return expectedText.Equals(app.Query(x => x.Marked(fieldName))[0].Text);
        }

        public int GetNumberInString(string fieldName)
        {
            string textFromField = app.Query(x => x.Marked(fieldName))[0].Text;

            string number = "";

            for (int i = 0; i < textFromField.Length; i++)
            {
                if (Char.IsDigit(textFromField[i]))
                    number += textFromField[i];
            }

            int results = int.Parse(number);

            return results;
        }
    }
}