using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Windows.Forms;
using PKHeX.Core;
using PKHeX.Drawing;

namespace PKHeX.WinForms
{
    public partial class RibbonEditor : Form
    {
        public RibbonEditor(PKM pk)
        {
            pkm = pk;
            InitializeComponent();
            WinFormsUtil.TranslateInterface(this, Main.CurrentLanguage);
            riblist = RibbonInfo.GetRibbonInfo(pkm);
            int vertScrollWidth = SystemInformation.VerticalScrollBarWidth;
            TLP_Ribbons.Padding = FLP_Ribbons.Padding = new Padding(0, 0, vertScrollWidth, 0);

            // Updating a Control display with autosized elements on every row addition is cpu intensive. Disable layout updates while populating.
            TLP_Ribbons.SuspendLayout();
            FLP_Ribbons.Scroll += WinFormsUtil.PanelScroll;
            TLP_Ribbons.Scroll += WinFormsUtil.PanelScroll;
            PopulateRibbons();
            TLP_Ribbons.ResumeLayout();

            if (pk is G8PKM pk8)
            {
                var names = Enum.GetNames(typeof(RibbonIndex));
                var values = (RibbonIndex[])Enum.GetValues(typeof(RibbonIndex));
                var items = names.Select((z, i) => new ComboItem(RibbonStrings.GetName("Ribbon"+z), (int) values[i])).OrderBy(z => z.Text);
                var ds = new List<ComboItem> {new(GameInfo.GetStrings(Main.CurrentLanguage).Move[0], -1)};
                ds.AddRange(items.ToArray());
                CB_Affixed.InitializeBinding();
                CB_Affixed.DataSource = ds;
                CB_Affixed.SelectedValue = (int)pk8.AffixedRibbon;
            }
            else
            {
                CB_Affixed.Visible = false;
            }
        }

        private readonly IReadOnlyList<RibbonInfo> riblist;
        private readonly PKM pkm;

        private const string PrefixNUD = "NUD_";
        private const string PrefixLabel = "L_";
        private const string PrefixCHK = "CHK_";
        private const string PrefixPB = "PB_";

        private void B_Cancel_Click(object sender, EventArgs e) => Close();

        private void B_Save_Click(object sender, EventArgs e)
        {
            Save();
            Close();
        }

        private void PopulateRibbons()
        {
            TLP_Ribbons.ColumnCount = 2;
            TLP_Ribbons.RowCount = 0;

            // Add Ribbons
            foreach (var rib in riblist)
                AddRibbonSprite(rib);
            foreach (var rib in riblist.OrderBy(z => RibbonStrings.GetName(z.Name)))
                AddRibbonChoice(rib);

            // Force auto-size
            foreach (var style in TLP_Ribbons.RowStyles.OfType<RowStyle>())
                style.SizeType = SizeType.AutoSize;
            foreach (var style in TLP_Ribbons.ColumnStyles.OfType<ColumnStyle>())
                style.SizeType = SizeType.AutoSize;
        }

        private void AddRibbonSprite(RibbonInfo rib)
        {
            var name = rib.Name;
            var pb = new PictureBox { AutoSize = false, Size = new Size(40,40), BackgroundImageLayout = ImageLayout.Center, Visible = false, Name = PrefixPB + name };
            var img = SpriteUtil.GetRibbonSprite(name);
            pb.BackgroundImage = img;

            var display = RibbonStrings.GetName(name);
            pb.MouseEnter += (s, e) => tipName.SetToolTip(pb, display);
            FLP_Ribbons.Controls.Add(pb);
        }

        private void AddRibbonChoice(RibbonInfo rib)
        {
            // Get row we add to
            int row = TLP_Ribbons.RowCount;
            TLP_Ribbons.RowCount++;

            var label = new Label
            {
                Anchor = AnchorStyles.Left,
                Name = PrefixLabel + rib.Name,
                Text = RibbonStrings.GetName(rib.Name),
                Padding = Padding.Empty,
                Margin = Padding.Empty,
                AutoSize = true,
            };
            TLP_Ribbons.Controls.Add(label, 1, row);

            if (rib.RibbonCount >= 0) // numeric count ribbon
                AddRibbonNumericUpDown(rib, row);
            else // boolean ribbon
                AddRibbonCheckBox(rib, row, label);
        }

        private void AddRibbonNumericUpDown(RibbonInfo rib, int row)
        {
            var nud = new NumericUpDown
            {
                Anchor = AnchorStyles.Right,
                Name = PrefixNUD + rib.Name,
                Minimum = 0,
                Width = 35,
                Increment = 1,
                Padding = Padding.Empty,
                Margin = Padding.Empty,
                Maximum = rib.MaxCount,
            };

            nud.ValueChanged += (sender, e) =>
            {
                FLP_Ribbons.Controls[PrefixPB + rib.Name].Visible = (rib.RibbonCount = (int)nud.Value) > 0;
                FLP_Ribbons.Controls[PrefixPB + rib.Name].BackgroundImage = SpriteUtil.GetRibbonSprite(rib.Name, (int)nud.Maximum, (int)nud.Value);
            };
            nud.Value = rib.RibbonCount > nud.Maximum ? nud.Maximum : rib.RibbonCount;
            TLP_Ribbons.Controls.Add(nud, 0, row);
        }

        private void AddRibbonCheckBox(RibbonInfo rib, int row, Control label)
        {
            var chk = new CheckBox
            {
                Anchor = AnchorStyles.Right,
                Name = PrefixCHK + rib.Name,
                AutoSize = true,
                Padding = Padding.Empty,
                Margin = Padding.Empty,
            };
            chk.CheckedChanged += (sender, e) =>
            {
                rib.HasRibbon = chk.Checked;
                FLP_Ribbons.Controls[PrefixPB + rib.Name].Visible = rib.HasRibbon;
            };
            chk.Checked = rib.HasRibbon;
            TLP_Ribbons.Controls.Add(chk, 0, row);

            label.Click += (s, e) => chk.Checked ^= true;
        }

        private void Save()
        {
            foreach (var rib in riblist)
                ReflectUtil.SetValue(pkm, rib.Name, rib.RibbonCount < 0 ? rib.HasRibbon : rib.RibbonCount);

            if (pkm is G8PKM pk8)
                pk8.AffixedRibbon = (sbyte)WinFormsUtil.GetIndex(CB_Affixed);
        }

        private void B_All_Click(object sender, EventArgs e)
        {
            if (ModifierKeys == Keys.Shift)
            {
                RibbonApplicator.RemoveAllValidRibbons(pkm);
                RibbonApplicator.SetAllValidRibbons(pkm);
                Close();
                return;
            }

            foreach (var c in TLP_Ribbons.Controls.OfType<CheckBox>())
                c.Checked = true;
            foreach (var n in TLP_Ribbons.Controls.OfType<NumericUpDown>())
                n.Value = n.Maximum;
        }

        private void B_None_Click(object sender, EventArgs e)
        {
            if (ModifierKeys == Keys.Shift)
            {
                RibbonApplicator.RemoveAllValidRibbons(pkm);
                if (pkm is G8PKM pk8)
                    pk8.AffixedRibbon = -1;
                Close();
                return;
            }

            CB_Affixed.SelectedValue = -1;
            foreach (var c in TLP_Ribbons.Controls.OfType<CheckBox>())
                c.Checked = false;
            foreach (var n in TLP_Ribbons.Controls.OfType<NumericUpDown>())
                n.Value = 0;
        }
    }
}