// Exercise the actual editor controls without capturing the desktop or changing the clipboard.
// Including the implementation lets this integration test drive private editor state directly.
#include "../src/screenshot.cpp"
#include <iostream>
int main()
{
    CoInitializeEx(nullptr,COINIT_APARTMENTTHREADED);
    try {
        INITCOMMONCONTROLSEX controls{sizeof(controls),ICC_STANDARD_CLASSES}; InitCommonControlsEx(&controls);
        ks::ScreenshotHost app{GetModuleHandleW(nullptr)};
        app.window=CreateWindowW(L"STATIC",L"",0,0,0,0,0,HWND_MESSAGE,nullptr,app.instance,nullptr);
        ks::Capture c(app);
        c.image=std::make_unique<ks::Surface>(320,240);
        PatBlt(c.image->dc,0,0,320,240,WHITENESS); c.start={0,0}; c.end={320,240};
        WNDCLASSW cls{}; cls.hInstance=app.instance; cls.lpfnWndProc=ks::captureProc;
        cls.lpszClassName=L"KSwitcher.Editor.Integration"; RegisterClassW(&cls);
        auto window=CreateWindowW(cls.lpszClassName,L"Editor test",WS_POPUP,0,0,320,240,app.window,nullptr,app.instance,&c);
        auto require=[](bool ok,const char *message){ if(!ok) throw std::runtime_error(message); };
        require(window!=nullptr,"editor creation");
        ks::edit(window,c); ShowWindow(window,SW_HIDE);
        require(GetWindow(window,GW_OWNER)==nullptr && (GetWindowLongPtrW(window,GWL_EXSTYLE)&WS_EX_APPWINDOW),
                "editor is an independent Alt+Tab application window");
        require(GetDlgItem(window,50)!=nullptr && c.statusHeight>0,"status bar is created");
        require(c.pencilCursor!=nullptr,"pencil drawing cursor loads");
        for(int size:{32,48,64,96}) {
            auto cursor=(HCURSOR)LoadImageW(app.instance,MAKEINTRESOURCEW(IDC_SCREENSHOT_PENCIL),IMAGE_CURSOR,size,size,0);
            ICONINFO info{};
            require(cursor && GetIconInfo(cursor,&info) && !info.fIcon,"pencil cursor supports standard and high DPI");
            require(info.xHotspot<UINT(size/3) && info.yHotspot>UINT(size*2/3),"pencil cursor draws from its tip");
            if(info.hbmMask) DeleteObject(info.hbmMask);
            if(info.hbmColor) DeleteObject(info.hbmColor);
            DestroyCursor(cursor);
        }
        wchar_t windowTitle[128]{}; GetWindowTextW(window,windowTitle,128);
        require(std::wstring(windowTitle)==L"KSwitcher — Screenshot #1","title includes editor index without usage hints");
        RECT client{}; GetClientRect(window,&client);
        require(c.view.bottom<=client.bottom-c.statusHeight,"image does not overlap status bar");
        ks::updateStatus(c);
        require(c.statusText.find(L"Freehand")!=std::wstring::npos,"default tool hint is shown");
        SendMessageW(GetDlgItem(window,13),WM_MOUSEMOVE,0,0);
        require(c.statusText.find(L"Ctrl+C")!=std::wstring::npos,"button hover shows action shortcut");
        SendMessageW(GetDlgItem(window,13),WM_MOUSELEAVE,0,0);
        require(c.statusText.find(L"Freehand")!=std::wstring::npos,"button leave restores contextual hint");
        for(int id:ks::ToolIds) require(GetDlgItem(window,id)!=nullptr,"all toolbar buttons created");
        require(GetDlgItem(window,34)!=nullptr && c.toolIcons[0][14]!=nullptr,"font icon created and loaded");
        ks::Mark text{{20,20},{20,20},0}; text.fontSize=18;
        ks::beginInlineText(window,c,text,-1);
        require(c.inlineText!=nullptr,"inline text control opens");
        ks::updateStatus(c);
        require(c.statusText.find(L"Ctrl+Enter")!=std::wstring::npos,"inline editing hint shows commit and cancel keys");
        SendMessageW(c.inlineText,EM_REPLACESEL,TRUE,(LPARAM)L"First line\r\nДругий рядок");
        require(c.textDraft.text==L"First line\r\nДругий рядок","inline text changes update draft");
        SendMessageW(window,ks::FinishTextMessage,1,(LPARAM)c.inlineText);
        require(!c.inlineText && c.marks.size()==1 && c.marks[0].text==text.text+L"First line\r\nДругий рядок","commit adds multiline text");
        ks::beginInlineText(window,c,c.marks[0],0);
        SendMessageW(c.inlineText,EM_REPLACESEL,TRUE,(LPARAM)L"Cancelled");
        SendMessageW(window,ks::FinishTextMessage,2,(LPARAM)c.inlineText);
        require(c.marks[0].text!=L"Cancelled","Escape cancels changes");
        SendMessageW(window,WM_KEYDOWN,VK_F2,0);
        require(c.inlineText!=nullptr,"F2 edits inline");
        SendMessageW(c.inlineText,EM_REPLACESEL,TRUE,(LPARAM)L"Edited"); ks::finishInlineText(window,c,true);
        require(c.marks[0].text==L"Edited","existing text edit commits");
        SendMessageW(window,WM_COMMAND,12,0);
        require(c.marks[0].text!=L"Edited","undo restores original text");
        SendMessageW(window,WM_COMMAND,18,0);
        require(c.marks[0].text==L"Edited","redo restores text edit");
        ks::beginInlineText(window,c,c.marks[0],0);
        SendMessageW(c.inlineText,EM_REPLACESEL,TRUE,(LPARAM)L""); ks::finishInlineText(window,c,true);
        require(c.marks.empty(),"committing empty text deletes object");
        c.marks.push_back({{30,150},{260,150},0}); c.selected=0;
        SendMessageW(window,WM_COMMAND,35,0);
        require(c.inlineText && c.editingLabel,"label button opens inline editor");
        SendMessageW(c.inlineText,EM_REPLACESEL,TRUE,(LPARAM)L"Arrow caption");
        ks::finishInlineText(window,c,true);
        require(c.marks.size()==1 && c.marks[0].label==L"Arrow caption" && c.marks[0].isLine(),"label attaches to arrow");
        SendMessageW(window,WM_KEYDOWN,VK_F2,0);
        require(c.inlineText && c.editingLabel,"F2 edits arrow caption");
        SendMessageW(c.inlineText,EM_REPLACESEL,TRUE,(LPARAM)L""); ks::finishInlineText(window,c,true);
        require(c.marks.size()==1 && c.marks[0].label.empty(),"empty label removes caption without deleting arrow");
        SendMessageW(window,WM_COMMAND,12,0);
        require(c.marks[0].label==L"Arrow caption","undo restores arrow caption");
        auto caption=ks::screenshotArrowLabel(c.marks[0]);
        auto captionGrip=ks::screenshotTextRotationHandle(caption,double(c.unit*0.6)*c.image->width/(c.view.right-c.view.left));
        c.selected=0;
        require(ks::markAt(c,captionGrip).second==ks::MarkPart::Rotation,"caption rotation handle is interactive");
        c.marks[0]=ks::dragScreenshotMark(c.marks[0],ks::MarkPart::Rotation,captionGrip,{captionGrip.x+40,captionGrip.y+20},320,240,true);
        auto angle=c.marks[0].rotation;
        SendMessageW(window,WM_KEYDOWN,VK_F2,0);
        SendMessageW(c.inlineText,EM_REPLACESEL,TRUE,(LPARAM)L"Rotated caption"); ks::finishInlineText(window,c,true);
        require(c.marks[0].rotation==angle && c.marks[0].label==L"Rotated caption","editing caption preserves its rotation");
        auto rotating=text; rotating.text=L"Rotate"; c.marks.push_back(rotating); c.selected=1;
        auto handle=ks::screenshotTextRotationHandle(rotating,double(c.unit*0.6)*c.image->width/(c.view.right-c.view.left));
        require(ks::markAt(c,handle).second==ks::MarkPart::Rotation,"rotation handle is interactive");
        c.hoveredPart=ks::MarkPart::Rotation; ks::updateStatus(c);
        require(c.statusText.find(L"15-degree")!=std::wstring::npos,"rotation hint explains Shift snapping");
        c.hoveredPart=ks::MarkPart::None;
        std::vector<ks::Mark> nudgeMarks;
        nudgeMarks.push_back({{60,60},{60,60},1});
        nudgeMarks.push_back({{60,60},{120,100},0});
        auto nudgeText=text; nudgeText.text=L"Move"; nudgeText.from=nudgeText.to={60,60}; nudgeMarks.push_back(nudgeText);
        for(auto shape:{ks::ScreenshotShape::Rectangle,ks::ScreenshotShape::Circle,ks::ScreenshotShape::Ellipse}) {
            ks::Mark mark{{60,60},{100,100},0}; mark.shape=shape; nudgeMarks.push_back(mark);
        }
        for(bool freehand:{false,true}) {
            ks::Mark mark{{60,60},{120,100},0}; mark.points={{60,60},{90,80},{120,100}}; mark.freehand=freehand;
            nudgeMarks.push_back(mark);
        }
        for(auto mark:nudgeMarks) {
            c.marks={mark}; c.selected=0; c.selectedLabel=false;
            SendMessageW(window,WM_KEYDOWN,VK_RIGHT,0); SendMessageW(window,WM_KEYDOWN,VK_DOWN,0);
            require(c.marks[0].from.x==61 && c.marks[0].from.y==61,"every object nudges one pixel per key");
            if(!mark.points.empty()) require(c.marks[0].points[1].x==91 && c.marks[0].points[1].y==81,"nudge moves entire stroke");
            SendMessageW(window,WM_KEYDOWN,VK_LEFT,0); SendMessageW(window,WM_KEYDOWN,VK_UP,0);
            require(c.marks[0].from.x==60 && c.marks[0].from.y==60,"opposite keys restore original position");
        }
        ks::Mark nudgeArrow{{60,60},{140,140},0}; nudgeArrow.label=L"Caption"; nudgeArrow.fontSize=12;
        c.marks={nudgeArrow}; c.selected=0; c.selectedLabel=true;
        auto beforeNudge=ks::screenshotTextBounds(ks::screenshotArrowLabel(c.marks[0]));
        for(int i=0;i<5;++i) SendMessageW(window,WM_KEYDOWN,VK_RIGHT,0);
        auto afterNudge=ks::screenshotTextBounds(ks::screenshotArrowLabel(c.marks[0]));
        require(afterNudge.left==beforeNudge.left+5 && afterNudge.top==beforeNudge.top,
                "caption nudges exact screen pixels at a diagonal angle");
        require(c.marks[0].from.x==60 && !c.marks[0].labelRotationManual,"caption nudge leaves arrow and automatic angle intact");
        SendMessageW(window,WM_COMMAND,12,0);
        require(ks::screenshotTextBounds(ks::screenshotArrowLabel(c.marks[0])).left==beforeNudge.left+4,"undo reverses one nudge");
        SendMessageW(window,WM_COMMAND,18,0);
        require(ks::screenshotTextBounds(ks::screenshotArrowLabel(c.marks[0])).left==beforeNudge.left+5,"redo restores one nudge");
        SetWindowPos(window,nullptr,80,60,720,500,SWP_NOZORDER|SWP_SHOWWINDOW);
        ks::copy(window,c,[](HWND,const ks::Clip &clip)->DWORD {
            if(clip.formats.empty()) throw std::runtime_error("copy produced no image");
            return 0;
        });
        require(IsWindow(window) && c.copied,"copy publishes screenshot and keeps editor open");
        c.selected=0; c.selectedLabel=false;
        SendMessageW(window,WM_KEYDOWN,VK_RIGHT,0);
        require(!c.copied,"editing after copy requires confirmation again");
        c.copied=true; SendMessageW(window,WM_COMMAND,12,0);
        require(!c.copied,"undo after copy requires confirmation again");
        c.copied=true; SendMessageW(window,WM_COMMAND,18,0);
        require(!c.copied,"redo after copy requires confirmation again");
        SetPropW(window,L"ConfirmationCentered",nullptr);
        SetTimer(window,987,10,[](HWND owner,UINT,UINT_PTR id,DWORD) {
            EnumThreadWindows(GetCurrentThreadId(),[](HWND popup,LPARAM parent)->BOOL {
                wchar_t className[64]{}; GetClassNameW(popup,className,64);
                if(GetWindow(popup,GW_OWNER)==(HWND)parent && std::wstring(className)==L"#32770") {
                    RECT ownerRect{},popupRect{};
                    GetWindowRect((HWND)parent,&ownerRect); GetWindowRect(popup,&popupRect);
                    if(std::abs(ownerRect.left+ownerRect.right-popupRect.left-popupRect.right)<=4 &&
                       std::abs(ownerRect.top+ownerRect.bottom-popupRect.top-popupRect.bottom)<=4)
                        SetPropW((HWND)parent,L"ConfirmationCentered",(HANDLE)1);
                    PostMessageW(popup,TDM_CLICK_BUTTON,IDNO,0);
                }
                return TRUE;
            },(LPARAM)owner);
            KillTimer(owner,id);
        });
        SendMessageW(window,WM_CLOSE,0,0);
        require(IsWindow(window),"declining close confirmation keeps the screenshot open");
        require(GetPropW(window,L"ConfirmationCentered")!=nullptr,"confirmation is centered on editor instead of screen");
        RemovePropW(window,L"ConfirmationCentered");
        c.copied=true;
        SendMessageW(window,WM_KEYDOWN,VK_ESCAPE,0);
        require(IsWindow(window),"Escape does not close the screenshot editor");
        SendMessageW(window,WM_CLOSE,0,0);
        require(!IsWindow(window),"copied screenshot closes without confirmation");
        static bool published=false;
        app.notify=[](const ks::Clip &) { return published; };
        ks::Capture selection(app);
        selection.image=std::make_unique<ks::Surface>(100,100);
        PatBlt(selection.image->dc,0,0,100,100,WHITENESS);
        selection.start={10,20}; selection.end={70,60};
        auto overlay=CreateWindowW(cls.lpszClassName,L"Selection test",WS_POPUP,0,0,100,100,app.window,nullptr,app.instance,&selection);
        ks::finishSelection(overlay,selection,[](HWND,const ks::Clip &clip)->DWORD {
            auto pixels=ks::decodeImage(clip);
            if(pixels.width!=60 || pixels.height!=40) throw std::runtime_error("automatic copy did not crop selection");
            published=true; return 0;
        });
        require(published && selection.copied && !IsWindow(overlay),"selection copies before notification and closes without editor");
        DestroyWindow(app.window); app.window=nullptr;
        CoUninitialize();
        std::cout<<"Passed screenshot editor UI integration checks\n";
    } catch(const std::exception &e) { std::cerr<<e.what()<<'\n'; return 1; }
}