using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Net.NetworkInformation;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Louis__Pharmacy_CNSA212_FP
{
    public partial class frmRefillAdd : Form
    {
        private static bool isAdd;
        public DataSet ds = new DataSet();

        public frmRefillAdd(bool isNew)
        {
            isAdd = isNew;
            InitializeComponent();

            if (isNew)
            {
                lblPurpose.Text = "Add Refill";
                btnAdd.Text = "Add";
            }
            else
            {
                lblPurpose.Text = "Edit Refill";
                btnAdd.Text = "Edit";
            }
        }

        private void frmRefillAdd_Load(object sender, EventArgs e)
        {
            txtRefillID.Enabled = false;

            if (isAdd)
            {
                double nextID = PharmacyDataTier.GetNextRefillID();
                txtRefillID.Text = nextID.ToString();
            }
            else
            {

            }
        }

        public void FillRefill(string refillID)
        {
            DataSet ds = new DataSet();
            PharmacyDataTier data = new PharmacyDataTier();

            ds = PharmacyDataTier.RefillSearch(refillID);
            txtRefillID.Text = ds.Tables[0].Rows[0]["Refill_id"].ToString();
            txtRefillDate.Text = ds.Tables[0].Rows[0]["RefillDate"].ToString();
            txtPatientID.Text = ds.Tables[0].Rows[0]["Patient_id"].ToString();
            txtMedicationID.Text = ds.Tables[0].Rows[0]["Medication_id"].ToString();
            txtRxNumber.Text = ds.Tables[0].Rows[0]["RxNum_id"].ToString();
        }

        private void btnAdd_Click(object sender, EventArgs e)
        {
            string refillID = "";
            DateTime date = new DateTime();
            string patientID = "";
            string medicationID = "";
            string rxNum = "";
            Int32 numRefills = 0;
            Int32 pastNumRefills = 0;

            rxNum = txtRxNumber.Text.Trim();

            try
            {
                DataSet ds = new DataSet();
                PharmacyDataTier phaDT = new PharmacyDataTier();

                ds = phaDT.NumberofRefills(rxNum);

                numRefills = Int32.Parse(ds.Tables[0].Rows[0]["numRefills"].ToString());
                pastNumRefills = Int32.Parse(ds.Tables[0].Rows[0]["pastNumRefills"].ToString());

                if (isAdd != true)
                {
                    refillID = txtRefillID.Text.Trim();
                    date = DateTime.Parse(txtRefillDate.Text.Trim());
                    patientID = txtPatientID.Text.Trim();
                    medicationID = txtMedicationID.Text.Trim();
                    rxNum = txtRxNumber.Text.Trim();

                    PharmacyDataTier.UpdateRefill(refillID, date, patientID, medicationID, rxNum);
                }
                else
                {
                    if (numRefills == pastNumRefills)
                    {
                        MessageBox.Show("This prescription has reached the maximum number of refills.", "Max Refill", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    }
                    else
                    {
                        if (isAdd)
                        {
                            refillID = txtRefillID.Text.Trim();
                            date = DateTime.Parse(txtRefillDate.Text.Trim());
                            patientID = txtPatientID.Text.Trim();
                            medicationID = txtMedicationID.Text.Trim();

                            PharmacyDataTier.AddRefill(refillID, date, patientID, medicationID, rxNum);
                            PharmacyDataTier.PastRefills(rxNum);
                        }
                    }
                }
            }
            catch (Exception exception)
            {

            }
        }
    }
}