using System;
using ImGuiNET;
using XivCommon.Functions;

namespace TextBoxStyler {
    public class PluginUi : IDisposable {
        private const string DefaultLabel = "<default>";

        private Plugin Plugin { get; }

        private bool _drawUi;

        private bool DrawUi {
            get => this._drawUi;
            set => this._drawUi = value;
        }

        internal PluginUi(Plugin plugin) {
            this.Plugin = plugin;

            this.Plugin.Interface.UiBuilder.OnBuildUi += this.Draw;
            this.Plugin.Interface.UiBuilder.OnOpenConfigUi += this.ToggleConfig;
        }

        public void Dispose() {
            this.Plugin.Interface.UiBuilder.OnOpenConfigUi -= this.ToggleConfig;
            this.Plugin.Interface.UiBuilder.OnBuildUi -= this.Draw;
        }

        internal void ToggleConfig(object? sender = null, EventArgs? e = null) {
            this.DrawUi = !this.DrawUi;
        }

        private void Draw() {
            if (!this.DrawUi) {
                return;
            }

            if (!ImGui.Begin($"{this.Plugin.Name} settings", ref this._drawUi)) {
                ImGui.End();
                return;
            }

            if (ImGui.BeginTabBar("textboxstyle-tabs")) {
                if (ImGui.BeginTabItem("Talk")) {
                    this.DrawTalkSettings();
                    ImGui.EndTabItem();
                }

                if (ImGui.BeginTabItem("Battle talk")) {
                    this.DrawBattleTalkSettings();
                    ImGui.EndTabItem();
                }

                ImGui.EndTabBar();
            }

            ImGui.End();
        }

        private void DrawTalkSettings() {
            ImGui.TextUnformatted("Choose a setting below to change the style of all text boxes.");

            var placeholder = this.Plugin.Config.Style?.Name() ?? DefaultLabel;
            if (ImGui.BeginCombo("Text box style", placeholder)) {
                if (ImGui.Selectable(DefaultLabel)) {
                    this.Plugin.Config.Style = null;
                    this.Plugin.Config.Save();
                }

                foreach (var style in (TalkStyle[]) Enum.GetValues(typeof(TalkStyle))) {
                    if (!ImGui.Selectable(style.Name())) {
                        continue;
                    }

                    this.Plugin.Config.Style = style;
                    this.Plugin.Config.Save();
                }

                ImGui.EndCombo();
            }

            var affectCutscenes = this.Plugin.Config.AffectCutscenes;
            if (ImGui.Checkbox("Affect cutscenes", ref affectCutscenes)) {
                this.Plugin.Config.AffectCutscenes = affectCutscenes;
                this.Plugin.Config.Save();
            }
        }

        private void DrawBattleTalkSettings() {
            ImGui.TextUnformatted("Choose a setting below to change the style of all battle talk text boxes.");

            var placeholder = this.Plugin.Config.BattleTalkStyle?.Name() ?? DefaultLabel;
            if (!ImGui.BeginCombo("Battle talk style", placeholder)) {
                return;
            }

            if (ImGui.Selectable(DefaultLabel)) {
                this.Plugin.Config.BattleTalkStyle = null;
                this.Plugin.Config.Save();
            }

            foreach (var style in (BattleTalkStyle[]) Enum.GetValues(typeof(BattleTalkStyle))) {
                if (!ImGui.Selectable(style.Name())) {
                    continue;
                }

                this.Plugin.Config.BattleTalkStyle = style;
                this.Plugin.Config.Save();
            }

            ImGui.EndCombo();
        }
    }
}