#include <c_WinUI_Toast.h>
#include <string.h>

// 定义定时器 ID
#define TIMER_CLOSE_ID 1

// Toast 窗口的全局配置
#define TOAST_WIDTH 320
#define TOAST_HEIGHT 80
#define MARGIN_RIGHT 20
#define MARGIN_BOTTOM 60

#define WINDOW_CLASS_NAME "c_WinUI_Toast"

#define PROP_KEY_TITLE      "c_WinUI_Toast.Title"
#define PROP_KEY_MESSAGE    "c_WinUI_Toast.Message"

/* ------------------------------------------------------------------------------------------------------------------ */
/*  */

c_WinGUI_EventHandlerDef(WM_PAINT, Toast_Paint) {
    PAINTSTRUCT ps;
    HDC hdc = BeginPaint(hwnd, &ps);

    char* title = GetProp(hwnd, PROP_KEY_TITLE);
    char* message = GetProp(hwnd, PROP_KEY_MESSAGE);

    if (title && message) {
        SetBkMode(hdc, TRANSPARENT);
        SetTextColor(hdc, RGB(255, 255, 255));
        RECT rcTitle = {15, 12, TOAST_WIDTH-15, 35};
        DrawText(hdc, title, -1, &rcTitle, DT_LEFT|DT_TOP|DT_END_ELLIPSIS);

        SetTextColor(hdc, RGB(200, 200, 200));
        RECT rcMsg = {15, 38, TOAST_WIDTH-15, TOAST_HEIGHT-10};
        DrawText(hdc, message, -1, &rcMsg, DT_LEFT|DT_TOP|DT_WORDBREAK|DT_END_ELLIPSIS);
    }

    EndPaint(hwnd, &ps);
}

c_WinGUI_EventHandlerDef(WM_TIMER, Toast_Timer) {
    if (id==TIMER_CLOSE_ID) {
        KillTimer(hwnd, TIMER_CLOSE_ID);
        AnimateWindow(hwnd, 300, AW_HIDE|AW_BLEND);
        DestroyWindow(hwnd);
    }
}

c_WinGUI_EventHandlerDef(WM_LBUTTONDOWN, Toast_LButtonDown) {
    PostMessage(hwnd, WM_TIMER, TIMER_CLOSE_ID, 0);
}

c_WinGUI_EventHandlerDef(WM_DESTROY, Toast_Destroy) {
    char* title = GetProp(hwnd, PROP_KEY_TITLE);
    char* message = GetProp(hwnd, PROP_KEY_MESSAGE);
    if (title){ free(title); }
    if (message){ free(message); }
    RemoveProp(hwnd, PROP_KEY_TITLE);
    RemoveProp(hwnd, PROP_KEY_MESSAGE);
}

c_WinGUI_EventMapBegin(WndProc)
    c_WinGUI_EventMap(WM_DESTROY, Toast_Destroy);
    c_WinGUI_EventMap(WM_TIMER, Toast_Timer);
    c_WinGUI_EventMap(WM_LBUTTONDOWN, Toast_LButtonDown);
    c_WinGUI_EventMap(WM_PAINT, Toast_Paint);

c_WinGUI_EventMapEnd()

void c_WinUI_Toast_Show(HINSTANCE hInst, const char* title, const char* message, UINT timeoutMs) {
    if (!title || !message) {
        return;
    }

    WNDCLASS wc = {0};
    wc.lpfnWndProc = WndProc;
    wc.hInstance = hInst;
    wc.lpszClassName = WINDOW_CLASS_NAME;
    wc.hbrBackground = CreateSolidBrush(RGB(32, 32, 32));
    // wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
    wc.hCursor = LoadCursor(NULL, IDC_ARROW);
    RegisterClass(&wc);

    int screenWidth = GetSystemMetrics(SM_CXSCREEN);
    int screenHeight = GetSystemMetrics(SM_CYSCREEN);

    int posX = screenWidth - TOAST_WIDTH - MARGIN_RIGHT;
    int posY = screenHeight - TOAST_HEIGHT - MARGIN_BOTTOM;

    HWND hwnd = CreateWindowEx(WS_EX_TOPMOST | WS_EX_TOOLWINDOW,
        WINDOW_CLASS_NAME, title,
        WS_POPUP,
        posX, posY, TOAST_WIDTH, TOAST_HEIGHT,
        NULL, NULL, hInst, NULL);

    if (!hwnd) {
        return;
    }
    char* p_title = strdup(title);
    char* p_message = strdup(message);

    SetProp(hwnd, PROP_KEY_TITLE, p_title);
    SetProp(hwnd, PROP_KEY_MESSAGE, p_message);

    SetTimer(hwnd, TIMER_CLOSE_ID, timeoutMs, NULL);

    AnimateWindow(hwnd, 200, AW_SLIDE | AW_VER_NEGATIVE | AW_ACTIVATE);

    InvalidateRect(hwnd, NULL, TRUE); // 标记整个窗口需要重绘
    UpdateWindow(hwnd);               // 立即发送 WM_PAINT 消息
}