/*
 * Copyright (c) 2020-2021 joshua stein <jcs@jcs.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <stdio.h>
#include <string.h>

#include "amend.h"
#include "browser.h"
#include "committer.h"
#include "focusable.h"
#include "repo.h"
#include "settings.h"
#include "util.h"

MenuHandle apple_menu, file_menu, edit_menu, repo_menu, amendment_menu;
bool quitting = false;

bool handle_menu(long menu_id);

int
main(void)
{
	Handle mbar;
	EventRecord event;
	WindowPtr event_win;
	GrafPtr old_port;
	AppFile finder_file;
	struct repo *repo;
	struct focusable *focusable;
	short event_in, n, finder_action, finder_count;
	bool did_initial_open = false;
	char key;
	
	InitGraf(&thePort);
	InitFonts();
	FlushEvents(everyEvent, 0);
	InitWindows();
	InitMenus();
	TEInit();
	InitDialogs(0);
	InitCursor();
	MaxApplZone();
	
	util_init();
	settings_load();
	
	mbar = GetNewMBar(MBAR_ID);
	SetMenuBar(mbar);
	apple_menu = GetMHandle(APPLE_MENU_ID);
	AddResMenu(apple_menu, 'DRVR');
	file_menu = GetMHandle(FILE_MENU_ID);
	edit_menu = GetMHandle(EDIT_MENU_ID);
	repo_menu = GetMHandle(REPO_MENU_ID);
	amendment_menu = GetMHandle(AMENDMENT_MENU_ID);
	menu_defaults();
	DrawMenuBar();
	
	/* see if we were started by double-clicking a .repo file */
	CountAppFiles(&finder_action, &finder_count);

	while (!quitting) {
		WaitNextEvent(everyEvent, &event, 5L, 0L);
		
		switch (event.what) {
		case nullEvent:
			for (n = 0; n < nfocusables; n++) {
				if (focusables[n]->idle)
					focusables[n]->idle(focusables[n], &event);
			}
			if (!did_initial_open) {
				if (finder_count) {
					GetAppFiles(1, &finder_file);
					ClrAppFiles(1);
					finder_count = 0;
					repo = repo_open(&finder_file);
				} else
					repo = repo_open(NULL);
					
				if (repo)
					browser_init(repo);
					
				did_initial_open = true;
			}
			break;
		case keyDown:
		case autoKey:
			key = event.message & charCodeMask;
			if ((event.modifiers & cmdKey) != 0) {
				if (handle_menu(MenuKey(key)))
					break;
			}
			if ((focusable = focusable_focused()) &&
			  focusable->key_down)
				focusable->key_down(focusable, &event);
			break;
		case mouseDown:		
			event_in = FindWindow(event.where, &event_win);
		
			switch (event_in) {
			case inMenuBar:
				handle_menu(MenuSelect(event.where));
				break;
			case inSysWindow:
				SystemClick(&event, event_win);
				break;
			case inDrag:
				if ((focusable = focusable_find(event_win)) != NULL) {
					if (!focusable_show(focusable))
						break;
						
					DragWindow(event_win, event.where, &screenBits.bounds);
				}
				break;
			case inGoAway:
				if (TrackGoAway(event_win, event.where)) {
					if ((focusable = focusable_find(event_win)) != NULL)
						focusable_close(focusable);
				}
				break;
			case inContent:
				if ((focusable = focusable_find(event_win)) != NULL) {
					if (!focusable_show(focusable))
						break;
					if (focusable->mouse_down)
						focusable->mouse_down(focusable, &event);
				}
				break;
			}
			break;
		case updateEvt:
			event_win = (WindowPtr)event.message;
			focusable = focusable_find(event_win);
			if (focusable && focusable->update) {
				GetPort(&old_port);
				SetPort(event_win);
				BeginUpdate(event_win);
				focusable->update(focusable, &event);
				EndUpdate(event_win);
				SetPort(old_port);
			}
			break;
		case activateEvt:
			break;
		case app4Evt:
			if (HiWord(event.message) & (1 << 8)) {
				/* multifinder suspend/resume */
				switch (event.message & (1 << 0)) {
				case 0:
					/* suspend */
					for (n = 0; n < nfocusables; n++) {
						if (focusables[n]->suspend)
							focusables[n]->suspend(focusables[n], &event);
					}
					break;
				case 1:
					/* resume */
					for (n = 0; n < nfocusables; n++) {
						if (focusables[n]->resume)
							focusables[n]->resume(focusables[n], &event);
					}
					break;
				}
			}
			break;
		}
	}

	return 0;
}

bool
handle_menu(long menu_id)
{
	struct focusable *focused;
	short menu, item;
	bool ret = true;
	
	menu = HiWord(menu_id);
	item = LoWord(menu_id);
	
	if (menu && item && (focused = focusable_focused()) &&
	  focused->menu && focused->menu(focused, menu, item))
		goto handled;
	
	switch (menu) {
	case APPLE_MENU_ID:
		switch (item) {
		case APPLE_MENU_ABOUT_ID:
			about(PROGRAM_NAME);
			break;
		default: {
			Str255 da;
			GrafPtr save_port;
			
			GetItem(apple_menu, LoWord(menu_id), &da);
			GetPort(&save_port);
			OpenDeskAcc(da);
			SetPort(save_port);
			break;
		}
		}
		break;
	case FILE_MENU_ID:
		switch (item) {
		case FILE_MENU_NEW_ID: {
			struct repo *repo;
			if ((repo = repo_create()))
				browser_init(repo);
			break;
		}
		case FILE_MENU_OPEN_ID: {
			struct repo *repo;
			if ((repo = repo_open(NULL)))
				browser_init(repo);
			break;
		}
		case FILE_MENU_SETTINGS_ID:
			settings_edit();
			break;
		case FILE_MENU_QUIT_ID:
			if (focusables_quit())
				quitting = true;
			break;
		}
		break;
	default:
		ret = false;
	}

handled:
	HiliteMenu(0);
	return ret;
}

void
menu_defaults(void)
{
	DisableItem(edit_menu, EDIT_MENU_CUT_ID);
	DisableItem(edit_menu, EDIT_MENU_COPY_ID);
	DisableItem(edit_menu, EDIT_MENU_PASTE_ID);
	DisableItem(edit_menu, EDIT_MENU_SELECT_ALL_ID);

	DisableItem(repo_menu, REPO_MENU_ADD_FILE_ID);
	DisableItem(repo_menu, REPO_MENU_DISCARD_CHANGES_ID);
	DisableItem(repo_menu, REPO_MENU_APPLY_DIFF_ID);

	DisableItem(amendment_menu, AMENDMENT_MENU_EDIT_ID);
	DisableItem(amendment_menu, AMENDMENT_MENU_EXPORT_ID);
}