using Dalamud.Bindings.ImGui;

namespace ICRebuild.Runtime;

// All slider call sites use this helper so precise input has the same limits as dragging.
public sealed class PrecisionSliders
{
    private float editing,firstClickValue;
    private uint firstClickId;
    private bool focus;
    public bool Float(string label,ref float value,float min,float max)
    {
        ImGui.PushID(label);
        var before=value;
        var id=ImGui.GetID("slider");
        var changed=ImGui.SliderFloat(label,ref value,min,max,"%.3f",ImGuiSliderFlags.AlwaysClamp|ImGuiSliderFlags.NoRoundToFormat);
        if(ImGui.IsItemHovered() && ImGui.IsMouseDoubleClicked(ImGuiMouseButton.Left))
        {
            value=firstClickId==id ? firstClickValue : before;
            changed=value!=before;
            editing=value; focus=true;
            ImGui.OpenPopup("输入精确数值");
        }
        else if(ImGui.IsItemClicked(ImGuiMouseButton.Left)) { firstClickId=id; firstClickValue=before; }
        if(ImGui.IsItemHovered()) ImGui.SetTooltip($"双击输入精确数值，或 Ctrl+单击直接输入。当前值：{value:G9}");
        if(ImGui.BeginPopup("输入精确数值"))
        {
            ImGui.TextUnformatted(label);
            ImGui.Text($"范围：{min:G9} ～ {max:G9}");
            if(focus) { ImGui.SetKeyboardFocusHere(); focus=false; }
            ImGui.SetNextItemWidth(210);
            var enter=ImGui.InputFloat("数值",ref editing,0,0,"%.6f",ImGuiInputTextFlags.EnterReturnsTrue|ImGuiInputTextFlags.AutoSelectAll);
            if(!float.IsFinite(editing)) ImGui.TextUnformatted("请输入有限数值。");
            ImGui.BeginDisabled(!float.IsFinite(editing));
            var apply=ImGui.Button("确定");
            ImGui.EndDisabled();
            if((enter || apply) && float.IsFinite(editing))
            {
                value=Math.Clamp(editing,min,max); changed=true; ImGui.CloseCurrentPopup();
            }
            ImGui.SameLine();
            if(ImGui.Button("取消")) ImGui.CloseCurrentPopup();
            ImGui.TextUnformatted("超出范围的数值按上下限保存。");
            ImGui.EndPopup();
        }
        ImGui.PopID();
        return changed;
    }
}