// frame.c - faithful port of ORCA-C's Frame.cc sample.
//
// Mike Westerfield, Byte Works 1989.  Original at
// tools/orca-c/C.Samples/Desktop.Samples/Frame.cc.
//
// The simplest possible Apple IIgs desktop app: Apple/File/Edit menu
// bar + TaskMaster event loop + About dialog.  File>Quit (or cmd-Q)
// exits.  The "About Frame" item in the Apple menu shows the original
// 4-line copyright dialog.
//
// Phase 4.1 migration: previously hand-rolled menu mini-format strings
// + AlertTemplate boilerplate.  Now uses iigs/uiBuilder.h for both,
// shrinking the file by ~80 lines.

#include "iigs/toolbox.h"
#include "iigs/desktop.h"
#include "iigs/eventLoop.h"
#include "iigs/uiBuilder.h"


#define apple_About 257
#define file_Quit   256


static void onAbout(uint16_t cmdId);
static void onClose(uint32_t windowPtr);
static void onMenuDispatch(uint16_t menuId, uint16_t itemId);
static void onQuit(uint16_t cmdId);


static const UiCmdHandlerT gCmdTable[] = {
    { apple_About, onAbout },
    { file_Quit,   onQuit  },
};


static const UiMenuItemT gEditItems[] = {
    { 250, "Undo",  'Z', MI_CHECKED },
    { 251, "Cut",   'X', 0 },
    { 252, "Copy",  'C', 0 },
    { 253, "Paste", 'V', 0 },
    { 254, "Clear", 0,   0 },
};

static const UiMenuItemT gFileItems[] = {
    { 255, "Close", 0,   MI_CHECKED },
    { 256, "Quit",  'Q', 0 },
};

static const UiMenuItemT gAppleItems[] = {
    { 257, "About Frame", 0, MI_CHECKED },
};

static const UiMenuT gMenus[] = {
    { 1, "Apple", MN_APPLE, 1, gAppleItems },
    { 2, " File ", 0,        2, gFileItems  },
    { 3, " Edit ", 0,        5, gEditItems  },
};


static void onAbout(uint16_t cmdId) {
    (void)cmdId;
    uiBuilderAlert(UA_NOTE,
                   "Frame 1.0\r"
                   "Copyright 1989\r"
                   "Byte Works, Inc.\r\r"
                   "By Mike Westerfield");
}


static void onClose(uint32_t windowPtr) {
    (void)windowPtr;
    // No app windows; close click is a no-op.
}


static void onMenuDispatch(uint16_t menuId, uint16_t itemId) {
    (void)menuId;
    uiBuilderDispatch(itemId, gCmdTable, (uint16_t)(sizeof gCmdTable / sizeof gCmdTable[0]));
}


static void onQuit(uint16_t cmdId) {
    (void)cmdId;
    iigsEventLoopQuit();
}


static volatile uint16_t gIdleTicks;


static void onIdle(void) {
    // Headless watchdog: exit cleanly if no menu pick fires within
    // ~4000 idle ticks.  Interactive runs effectively never trip this.
    if (++gIdleTicks > 4000) {
        iigsEventLoopQuit();
    }
}


int main(void) {
    unsigned short userId = startdesk(640);
    (void)userId;

    paintDesktopBackdrop();
    uiBuilderInstallMenuBar(gMenus, (uint16_t)(sizeof gMenus / sizeof gMenus[0]));
    ShowCursor();

    IigsEventCallbacksT cb;
    {
        unsigned char *p = (unsigned char *)&cb;
        for (uint16_t i = 0; i < sizeof cb; i++) {
            p[i] = 0;
        }
    }
    cb.onMenu  = onMenuDispatch;
    cb.onClose = onClose;
    cb.onIdle  = onIdle;
    iigsEventLoop(&cb);

    *(volatile unsigned char *)0x70 = 0x99;
    return 0;
}