using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;

namespace FCC_Uber_MDX_Configurator
{
    public partial class AddImageForm : Form
    {
        public string IMAGE_PATH;
        public Bitmap IMAGE_BITMAP;

        public AddImageForm()
        {
            InitializeComponent();
            this.Shown += new EventHandler(AddImageForm_Shown);
        }

        void AddImageForm_Shown(object sender, EventArgs e)
        {
            ShowLoadImageDialogue();
        }

        public AddImageForm(Bitmap input_Bitmap, string input_path)
        {
            IMAGE_PATH = input_path;
            IMAGE_BITMAP = input_Bitmap;
            InitializeComponent();
            RefreshPictureBox();
        }

        private void RefreshPictureBox()
        {
            if (IMAGE_BITMAP.Size.Width > PICT_PREVIEW.Size.Width || IMAGE_BITMAP.Size.Height > PICT_PREVIEW.Size.Height)
            {
                PICT_PREVIEW.BackgroundImageLayout = ImageLayout.Zoom;
            }
            else
            {
                PICT_PREVIEW.BackgroundImageLayout = ImageLayout.Center;
            }
            PICT_PREVIEW.BackgroundImage = IMAGE_BITMAP;
        }

        private void ShowLoadImageDialogue()
        {
            if (DIALOGUE_OPEN.ShowDialog() == DialogResult.OK)
            {
                this.DialogResult = DialogResult.None;
                if (!File.Exists(DIALOGUE_OPEN.FileName))
                {
                    (new ErrorForm("Invalid Image", "Image does not exist")).ShowDialog();
                    return;
                }
                List<string> supportedFileExtensions = new List<string>(new string[] { "png", "bmp", "jpg", "gif" });
                string[] currentFileExtensionArray = DIALOGUE_OPEN.FileName.Split(new char[] { '.' });
                if (currentFileExtensionArray.Length != 2)
                {
                    (new ErrorForm("Invalid File Name", "File cannot contain multiple extensions\r\n(Only 1 \".\" allowed)")).ShowDialog();
                    return;
                }
                string currentFileExtension = currentFileExtensionArray[1];
                if (!supportedFileExtensions.Contains(currentFileExtension))
                {
                    (new ErrorForm("Invalid Image", "Image is not of a supported file type")).ShowDialog();
                    return;
                }
                IMAGE_PATH = DIALOGUE_OPEN.FileName;
                IMAGE_BITMAP = (Bitmap)Image.FromFile(IMAGE_PATH);
                RefreshPictureBox();
                return;
            }
            this.DialogResult = DialogResult.None;
        }

        private void BTN_LOAD_Click(object sender, EventArgs e)
        {
            ShowLoadImageDialogue();
        }

        private void BTN_SAVE_Click(object sender, EventArgs e)
        {
            if (IMAGE_PATH == null || IMAGE_PATH == "")
            {
                (new ErrorForm("Invalid Image", "No image or an invalid image has been loaded.")).ShowDialog();
                return;
            }
            if (!System.IO.File.Exists(IMAGE_PATH))
            {
                (new ErrorForm("File Not Found", "This image is no longer in the location it was.")).ShowDialog();
                return;
            }
            this.DialogResult = DialogResult.OK;
        }

        private void BTN_CANCEL_Click(object sender, EventArgs e)
        {
            this.DialogResult = DialogResult.Cancel;
        }
    }
}