using FastReport.Utils;
using System;
using System.Drawing;
using System.Windows.Forms;

namespace FastReport.FastQueryBuilder
{
    internal class LinkMenu
    {
        private ContextMenuStrip linkMenu;
        private ToolStripMenuItem linkMenuName;
        private ToolStripMenuItem linkMenuJoin;
        private ToolStripMenuItem linkMenuCondition;
        private ToolStripMenuItem linkMenuDelete;

        private Control owner;

        public Link CurrentLink { get; private set; }

        public event EventHandler DeleteLink;

        public LinkMenu(Control owner)
        {
            this.owner = owner;

            MyRes res = new MyRes("Forms,QueryBuilder");

            linkMenu = new ContextMenuStrip();
            linkMenuName = new ToolStripMenuItem();
            linkMenuJoin = new ToolStripMenuItem(res.Get("Joins"));
            linkMenuCondition = new ToolStripMenuItem(res.Get("Condition"));
            linkMenuDelete = new ToolStripMenuItem(res.Get("Delete"));
            linkMenuDelete.Click += (s, e) => DeleteLink?.Invoke(this, e);
            linkMenu.Items.AddRange(new ToolStripItem[] { linkMenuName, new ToolStripSeparator(), linkMenuJoin, linkMenuCondition, linkMenuDelete });

            // join types
            foreach (var joinType in QueryEnums.JoinTypesToStr)
            {
                var itm = new ToolStripMenuItem(joinType);
                itm.Click += (s, e) => linkMenu_SetJoinType(s);
                linkMenuJoin.DropDownItems.Add(itm);
            }

            // conditions
            res = new MyRes("Forms,QueryBuilder,Where");
            var conditions = new string[] {
                res.Get("Equal"),
                res.Get("NotEqual"),
                res.Get("GtOrEqual"),
                res.Get("Gt"),
                res.Get("LtOrEqual"),
                res.Get("Lt"),
                res.Get("Like"),
                res.Get("NotLike") };
            foreach (var condition in conditions)
            {
                var itm = new ToolStripMenuItem(condition);
                itm.Click += (s, e) => linkMenu_SetLinkCondition(s);
                linkMenuCondition.DropDownItems.Add(itm);
            }
        }

        public void UpdateDpiDependencies()
        {
            linkMenu.Font = owner.Font;
            linkMenuName.Font = new Font(owner.Font, FontStyle.Bold);
            linkMenuDelete.Image = owner.GetImage(51);
        }

        public void Show(Control c, Point point, Link link)
        {
            CurrentLink = link;
            UpdateLinkMenu();
            linkMenu.Show(c, point);
        }

        private void UpdateLinkMenu()
        {
            linkMenuName.Text = CurrentLink.From.Name + " " + QueryEnums.WhereTypesToStr[(int)CurrentLink.Where] + " " + CurrentLink.To.Name;

            for (int i = 0; i < linkMenuJoin.DropDownItems.Count; i++)
            {
                var itm = linkMenuJoin.DropDownItems[i] as ToolStripMenuItem;
                itm.Checked = (int)CurrentLink.Join == i;
            }

            for (int i = 0; i < linkMenuCondition.DropDownItems.Count; i++)
            {
                var itm = linkMenuCondition.DropDownItems[i] as ToolStripMenuItem;
                itm.Checked = (int)CurrentLink.Where == i;
            }
        }

        private void linkMenu_SetJoinType(object sender)
        {
            var i = linkMenuJoin.DropDownItems.IndexOf((ToolStripMenuItem)sender);
            CurrentLink.Join = (QueryEnums.JoinTypes)i;
        }

        private void linkMenu_SetLinkCondition(object sender)
        {
            var i = linkMenuCondition.DropDownItems.IndexOf((ToolStripMenuItem)sender);
            CurrentLink.Where = (QueryEnums.WhereTypes)i;
        }

    }
}