/**
 * This is the core of ANSItex
 *
 * When called as login.js, it will handle the un-authenticated user.
 * When called as main.js, it's assumed that the user has been authenticated.
 * (In fact the functionality between the two is no different.)
 */

log(LOG_DEBUG,'* INIT: ANSItex');
var debug_mode = ''; // eg: 'user/password/10010010001';

// SBBS Key definitions
require('key_defs.js','KEY_ESC');

// ANSItex specific includes
load('ansitex/load/funcs.js');

// Our page handler
load('ansitex/load/page.js');

// @todo Returning from chat should refresh the frame
// @todo Suppress displays of telegrams (but trigger when they arrive)
/**
 * SBBS terminal settings init
 */
// Dont always ask for a password.
bbs.node_settings &= ~(NM_LOGON_P);
// We'll take care of inactivity
bbs.node_settings &= NM_NO_INACT;
// No spinning cursors
bbs.node_settings &= NM_NOPAUSESPIN;
// Dont allow users to login with a number
bbs.node_settings &= NM_NO_NUM;
// @todo Suppress "Read your mail now" at login
// @todo Update message loading to process mystic color codes - this todo shouldnt be here, but placed here so I would see it and move it
// @todo Add "time ago" for messages, as an easier visual of how old it is.

// Suppress some SBBS message prompts, as we handle them
bbs.replace_text(390,'');			// Unknown User
bbs.replace_text(391,'');			// Invalid Login
bbs.replace_text(826,'');			// LoggingOn

switch (client.socket.local_port) {
	case 516:
		var SESSION_EXT = 'vtx';
		require(ANSITEX_HOME+'/load/session/viewdata.js','SESSION_VIEWDATA');
		break;

	// Assume ANSItex
	default:
		var SESSION_EXT = 'tex';
		require(ANSITEX_HOME+'/load/session/ansitex.js','SESSION_ANSITEX');
}

/**
 * This is our main event loop - where we interact with the user.
 * This loop takes care of first connect (unauthenticated users), or after authentication (main shell).
 */
while (bbs.online) {
	/**
	 * Next action to take
	 * - NULL means no action
	 * - ACTION_* is the action (as defined in defs.js)
	 * @type {number|null}
	 */
	var action = ACTION_GOTO;				// Initial action

	/**
	 * State of the current action
	 * - NULL means we are not doing anything
	 * - MODE_* is the mode (as defined in defs.js)
	 * @type {number|null}
	 */
	var mode = null;						// Initial mode

	/**
	 * The next page to display
	 * @type {PageObject}
	 */
	var next_page = new PageObject(user.name ? FRAME_HOME_AUTH : FRAME_HOME_CONNECT);		// Start Frame

	/**
	 * Variable holding our current key timeout value
	 * @type {number}
	 */
	var inkey_timeout = INACTIVE_TIMEOUT;

	/**
	 * Current Session Object that describe the terminal that the user has connected on
	 * - SessionViewdata	- for ViewData sessions
	 * - SessionAnsitex		- for ANSItex sessions
	 * @type {SessionProtocol}
	 */
	var so = new SessionProtocol();

	/**
	 * History of PageObjects that the user has seen this session
	 * @type {array}
	 */
	var history = [];

	/**
	 * Current input field being edited when a frame has input fields
	 * - NULL means we are not inputting on a field
	 * @type {number|null}
	 */
	var fn = null;

	/**
	 * Current Input Field.
	 * @type {object}
	 */
	var cf = null;

	/**
	 * User has hit the inactivity timeout without any input
	 * @type {boolean}
	 */
	var timeout = false;

	/**
	 * Time the user hit the inactivity timeout
	 * @type {number}
	 */
	var timer = time();

	/**
	 * Current Control Method
	 * @type {null}
	 */
	var cc = null;

	/**
	 * Which command control methods are in play and process input
	 * @type {array}
	 */
	var control = [];

	/**
	 * The command being entered on the bottom line
	 * @type {string}
	 */
	var cmd = '';

	/**
	 * We are receiving an extended key sequence (like a function key)
	 * @type {string}
	 */
	var extendedkey = '';

	/**
	 * The current input character
	 * @type {string}
	 */
	var read = '';

	/**
	 * ESC key sequence received
	 */
	var esc = false;

	while (action !== ACTION_TERMINATE && action !== ACTION_EXIT && bbs.online) {
		try {
			log(LOG_DEBUG,'- Start ACTION is ['+action+']');

			bbs.nodesync();

			read = '';
			esc = false;

			// If we have no action, read from the terminal
			if (action === null) {
				// If a special key sequence is coming...
				while ((esc || ! read) && (action !== ACTION_TERMINATE)) {
					log(LOG_DEBUG,'================================================');
					log(LOG_DEBUG,'- READ START : control.length='+control.length);
					log(LOG_DEBUG,'- READ START : inkey_timeout='+inkey_timeout);

					// Wait for a key from the user
					read = console.inkey(K_NONE,inkey_timeout);

					// We are entering a special keyboard char.
					if (read === KEY_ESC) {
						log(LOG_DEBUG,'- READ SPECIAL KEY COMING');
						esc = true;
						// We reduce our timeout, and assume the key is a function key. If the user pressed ESC we'll process that later
						inkey_timeout = 200;

					// If we got the ESC, but no [ then re-put the ESC in the read, we loose the current key
					// @todo We loose the current pressed key
					} else if (esc && ! extendedkey && read !== '[') {
						log(LOG_DEBUG,'- READ SPECIAL KEY ABANDONED: ['+read+'] ('+read.charCodeAt(0)+')');
						esc = false;
						inkey_timeout = INACTIVE_TIMEOUT;
						read = KEY_ESC;

					// Recognise when the ESC sequence has ended (with a ~ or ;)
					} else if (esc && extendedkey && (read === '~' || read === ';' || ! read)) {
						switch (extendedkey) {
							case '[15': read = false; break; // F5
							case '[17': read = false; break; // F6
							case '[18': read = false; break; // F7
							case '[19': read = false; break; // F8
							case '[20': read = false; break; // F9
							case '[21': read = ascii(26); break; // F10
							case '[23': read = false; break; // F11
							case '[24': read = false; break; // F12
							default:
								log(LOG_DEBUG,'- READ UNKNOWN KEY: ['+extendedkey+']');
								read = '';
						}

						esc = false;
						extendedkey = '';
						inkey_timeout = INACTIVE_TIMEOUT;

					// Record the character as an extended key
					} else if (esc) {
						log(LOG_DEBUG,'- READ SPECIAL KEY ['+read+'] ('+read.charCodeAt(0)+')');

						extendedkey += read;
						read = false;
					}

					// Calculate idle timeouts
					// If the user has exemption H we dont worry about timeout
					if (! read && ! (user.security.exemptions&UFLAG_H) ) {
						log(LOG_DEBUG,'- READ empty, evaluating timeouts...');

						// Terminate the user if they have been inactive too long.
						if (time() > timer+((user.number ? INACTIVE_LOGIN : INACTIVE_NOLOGIN)+INACTIVE_TIMEOUT)/1000) {
							so.baselineSend('INACTIVE',false);
							action = ACTION_TERMINATE;
							mode = null;

							log(LOG_INFO,'User INACTIVE - terminating...');

						// Idle warning - due to inactivity.
						} else if (time() > timer+(user.number ? INACTIVE_LOGIN : INACTIVE_NOLOGIN)/1000) {
							timeout = true;
							so.baselineSend('INACTIVITY',false);

							if (cf) {
								so.gotoxy(cf.x+cf.value.length,cf.y);
								so.attr(cf.attribute);
							}
						}

					} else {
						// If the user become active during inactivity, clear the baseline message
						if (timeout) {
							so.baselineClear(false);

							if (cf) {
								so.gotoxy(cf.x+cf.value.length,cf.y);
								so.attr(cf.attribute);
							}
						}

						timer = time();
						timeout = false;
					}

					// If we are in a control, we need to break here so that the control takes the input
					if (control.length)
						break;
				}
			}

			log(LOG_DEBUG,'READ: ['+read+'] ('+read.charCodeAt(0)+')');

			// to ensure our node status is updated correctly
			system.node_list[bbs.node_num-1].action = 0xff;

			// After reading from the terminal, see if we need to pass that input to a control module,
			// except if input is on the bottom line
			log(LOG_DEBUG,'------------------------------------------------');
			log(LOG_DEBUG,'CONTROL: mode ['+mode+'] ('+control.length+')');
			if ((mode !== MODE_BL) && control.length) {
				//log(LOG_DEBUG,'CONTROL DEBUG: ['+control.length+'] ('+JSON.stringify(control)+')');
				cc = control[control.length-1];
				log(LOG_DEBUG,'CONTROL IS: ['+typeof cc+']');
				log(LOG_DEBUG,'CONTROL START: ['+read+'] ('+cc.getName+')');
				// We pass the read to the control and see if it consumes it.
				read = cc.handle(read);
				log(LOG_DEBUG,'CONTROL RETURN: ['+read+'] ('+cc.isComplete+')');

				if (cc.isComplete) {
					control.pop();
					cc = null;
					log(LOG_DEBUG,'CONTROL COMPLETE: ['+read+'] ('+control.length+')');

					// If there are no more control items
					if (control.length === 0)
						inkey_timeout = INACTIVE_TIMEOUT;
				}
			}

			log(LOG_DEBUG,'CONTROL END: ['+read+']');
			log(LOG_DEBUG,'------------------------------------------------');

			log(LOG_DEBUG,'------------------------------------------------');
			log(LOG_DEBUG,'MODE START: ['+read.charCodeAt(0)+'] ('+mode+')');
			switch (mode) {
				// Normal navigation
				case null:
					log(LOG_DEBUG,'- MODE NULL: ['+read+']');

					switch (read) {
						case '*': action = ACTION_STAR;
							break;

						// Frame Routing
						case '0':
						case '1':
						case '2':
						case '3':
						case '4':
						case '5':
						case '6':
						case '7':
						case '8':
						case '9':
							log(LOG_DEBUG,'- MODE null: Key ['+read+'] Route ['+so.page.key[read]+']');

							if (so.page.key[read] !== null) {
								// If a page routes to 0, requesting the home page
								if (so.page.key[read] === 0) {
									next_page = new PageObject(user.number ? FRAME_HOME : FRAME_LOGIN);
									action = ACTION_GOTO;
									log(LOG_DEBUG,'- NULL: Key ['+read+'] ['+next_page.toString()+']');

								} else if (so.page.key[read].toString().match(/^[0-9]+/)) {
									next_page = new PageObject(so.page.key[read],'a');
									action = ACTION_GOTO;
									log(LOG_DEBUG,'- NULL: Key ['+read+'] ['+next_page.toString()+']');

								} else {
									so.baselineSend('ERR_ROUTE',false);
								}

							} else {
								so.baselineSend('ERR_ROUTE',false);
							}

							break;

						case '_':
							// Viewdata terminal's # is an _ character
							if (SESSION_EXT === 'tex') break;
							/* fallthrough */
						case '#':
							log(LOG_DEBUG,'- NULL: Key ['+read+'] ['+so.page.name.toString()+']');
							next_page = so.page.pagenext;

							if (next_page) {
								action = ACTION_GOTO;

							} else {
								so.baselineSend('ERR_ROUTE',false);
							}

							break;
					}

					break;

				// Command input on bottom line
				case MODE_BL:
					log(LOG_DEBUG,'- MODE_BL: ['+read+']');
					if (read.match(/[0-9]/)) {
						cmd += read;
						console.write(read);
					}

					log(LOG_DEBUG,'- MODE_BL: cmd ['+cmd+']');

					// If the user pressed backspace
					// @todo We should get the user's configuration of backspace
					if ((read === CTRL_H || read === KEY_DEL) && cmd.length) {
						console.backspace();
						cmd = cmd.substring(0,cmd.length-1);
					}

					if (cmd === '00') {
						action = ACTION_RELOAD;
						cmd = '';
						so.cursorOff();
						so.baselineClear();
						break;
					}

					// Special code to launch SQRL
					if (cmd === '01' && ! user.number) {
						action = ACTION_GOTO;
						cmd = '';
						so.cursorOff();
						so.baselineClear();
						next_page = new PageObject(FRAME_SQRL);
						break;
					}

					// Invalid system pages.
					if (cmd.match(/^0[12367]/)) {
						log(LOG_DEBUG,'- MODE_BL: Invalid System Page ['+cmd+']');

						action = mode = null;
						cmd = '';
						so.cursorOff();
						so.baselineSend('ERR_ROUTE',false);
					}

					// Edit specific frame
					if (cmd.match(/^04/) && read.match(/[a-z]/)) {
						log(LOG_DEBUG,'- MODE_BL: Edit ['+cmd+']');

						// If we are not a user
						if (! user.number) {
							action = null;
							so.baselineSend('ERR_ROUTE',false);

						} else {
							action = ACTION_EDIT;
							so.baselineClear();
							next_page = new PageObject(parseInt(cmd.substr(2,cmd.length-1)),read);

							log(LOG_DEBUG,'- MODE_BL: EDIT ['+JSON.stringify(next_page.toString())+']');
						}

						mode = null;
						cmd = '';
						so.cursorOff();

						break;
					}

					// Bookmark frame
					if (cmd === '05') {
						log(LOG_DEBUG,'- MODE_BL: Bookmark ['+cmd+']');

						if (! user.number) {
							so.baselineSend('ERR_ROUTE',false);

						} else {
							// @todo
							so.baselineSend('ERR_NOT_IMPLEMENTED',false);
						}

						action = mode = null;
						cmd = '';
						so.cursorOff();

						break;
					}

					// Report Problem
					if (cmd === '08') {
						log(LOG_DEBUG,'- MODE_BL: Report Problem ['+cmd+'] ('+so.page.name.toString()+')');

						if (! user.number) {
							so.baselineSend('ERR_ROUTE',false);

						} else {
							// @todo
							so.baselineSend('ERR_NOT_IMPLEMENTED',false);
						}

						action = mode = null;
						cmd = '';
						so.cursorOff();

						break;
					}

					// Reload frame
					if (cmd === '09') {
						log(LOG_DEBUG,'- MODE_BL: Reload frame ['+cmd+'] ('+so.page.name.toString()+')');

						action = ACTION_GOTO;
						cmd = '';
						so.cursorOff();
						next_page = so.page.name;

						break;
					}

					// Another star aborts the command
					if (read === '*') {
						log(LOG_DEBUG,'- MODE_BL: Abort ['+cmd+'])');

						action = mode = null;
						cmd = '';
						so.cursorOff();
						so.baselineClear(false);

						if (cf) {
							// If there is a control for this field,
							if (cc)
								cc.prefield();

							mode = MODE_FIELD;
							so.gotoxy(cf.x,cf.y);
							so.attr(cf.attribute);
							console.write(cf.char.repeat(cf.value.length));
							so.cursorOn(cf.x,cf.y);
							cf.value = '';
						}
					}

					if (((SESSION_EXT === 'vtx') && read === '_') || ((SESSION_EXT === 'tex') && read === '#') || ((read === "\r") && (cmd.length > 0))) {
						log(LOG_DEBUG,'- MODE_BL: Return Received ['+cmd+'])');

						// Nothing typed between * and #
						// *# means go back
						if (cmd === '') {
							so.baselineClear(false);
							action = ACTION_BACKUP;

						} else if (cmd === '0') {
							next_page = new PageObject(user.number ? FRAME_HOME : FRAME_LOGIN);
							action = ACTION_GOTO;

						// Edit frame
						} else if (cmd === '04') {
							// If we are not a user
							if (! user.number) {
								so.baselineSend('ERR_ROUTE',false);
								action = null;

							} else {
								action = ACTION_EDIT;
							}

						} else {
							next_page = new PageObject(cmd,'a');
							action = ACTION_GOTO;
						}

						// Clear the command we are finished processing...
						cmd = '';
						mode = null;
						so.cursorOff();
					}

					log(LOG_DEBUG,'- MODE_BL: END');
					break;

				// Key presses during field input.
				case MODE_FIELD:
					action = null;

					switch (so.page.type) {
						// Login frame.
						case FRAME_TYPE_LOGIN:
							switch (read) {
								case '_':
									if (SESSION_EXT === 'tex') break;
									/* fallthrough */
								case '#':
								case "\r":
									log(LOG_DEBUG,'- MODE_FIELD:FRAME_TYPE_LOGIN: ['+read+'] A');
									// If we are the main login screen, see if it is a new user
									if (cf.type === FIELD_TEXT && cf.value.toUpperCase() === 'NEW') {
										action = ACTION_GOTO;
										next_page = new PageObject(FRAME_REGISTER);

										break;
									}

									break;
							}
							/* fallthrough */
						// Response frame.
						case FRAME_TYPE_RESPONSE:
							// If we came from FRAME_TYPE_LOGIN and the user typed NEW to register
							if (action === ACTION_GOTO)
								break;

							switch (read) {
								// End of field entry.
								case '_':
									if (SESSION_EXT === 'tex') break;
									/* fallthrough */
								case '#':
								case "\r":
									log(LOG_DEBUG,'- MODE_FIELD:FRAME_TYPE_RESPONSE: # ['+read+']');
									// Next Field
									fn++;

									cf = so.page.input_fields[fn];
									log(LOG_DEBUG,'fn:'+fn+', cf'+JSON.stringify(cf));

									if (cf) {
										// If there is a control for this field,
										if (cc)
											cc.prefield();

										mode = MODE_FIELD;
										so.gotoxy(cf.x+cf.value.length,cf.y);
										so.attr(cf.attribute);

									// Finished all editable fields.
									} else {
										action = ACTION_SUBMITRF;
									}

									break;

								case '*':
									log(LOG_DEBUG,'- MODE_FIELD:FRAME_TYPE_RESPONSE: ['+read+']');

									action = ACTION_STAR;

									break;

								// Delete Key pressed
								case CTRL_H:
								case KEY_DEL:
									log(LOG_DEBUG,'- MODE_FIELD:FRAME_TYPE_RESPONSE: DEL ['+read+']'+' cf:'+(cf ? cf.value.length : '{}')+' ct:'+cf.type);

									if (cf.value.length > 0) {
										cf.value = cf.value.substring(0,cf.value.length-1);
										so.fieldbs(cf.char);
									}

									break;

								case KEY_ESC:
									log(LOG_DEBUG,'- MODE_FIELD:FRAME_TYPE_RESPONSE: ESC ['+read+']');
									break;

								case KEY_DOWN:
									log(LOG_DEBUG,'- MODE_FIELD:FRAME_TYPE_RESPONSE: DOWN ['+read+']');
									// Next Field
									fn++;

									cf = so.page.input_fields[fn];
									log(LOG_DEBUG,'fn:'+fn+', cf'+JSON.stringify(cf));

									if (! cf) {
										fn = 0;
										cf = so.page.input_fields[fn];
									}

									// If there is a control for this field,
									if (cc)
										cc.prefield();

									mode = MODE_FIELD;
									so.gotoxy(cf.x+cf.value.length,cf.y);
									so.attr(cf.attribute);

									break;

								case KEY_UP:
									log(LOG_DEBUG,'- MODE_FIELD:FRAME_TYPE_RESPONSE: UP ['+read+']');
									// Next Field
									fn--;

									if (fn < 0) {
										fn = so.page.input_fields.length-1;
									}

									cf = so.page.input_fields[fn];
									log(LOG_DEBUG,'fn:'+fn+', cf'+JSON.stringify(cf));

									// If there is a control for this field,
									if (cc)
										cc.prefield();

									mode = MODE_FIELD;
									so.gotoxy(cf.x+cf.value.length,cf.y);
									so.attr(cf.attribute);

									break;

								// Record Data Entry
								default:
									log(LOG_DEBUG,'- MODE_FIELD:FRAME_TYPE_RESPONSE: ['+read+'] E:'+read.charCodeAt(0)+' cf:'+(cf ? cf.length : '{}'));

									if (read.charCodeAt(0) > 31 && cf.value.length < cf.length) {
										cf.value += read;
										console.write((cf.type === FIELD_TEXT) ? read : FIELD_PASSWORD_MASK);
									}
								}

							break;

						// Other Frame Types - Shouldnt get here.
						default:
							log(LOG_DEBUG,'- SHOULDNT GET HERE: ['+read+']');
							action = ACTION_TERMINATE;
					}

					break;

				// Form submission: 1 to send, 2 not to send.
				case MODE_SUBMITRF:
					so.cursorOff();

					switch (read) {
						case '1':
							so.baselineSend('PROCESSING');

							log(LOG_DEBUG,'- MODE_SUBMITRF: Key ['+read+'] ['+pageStr(so)+']');
							log(LOG_DEBUG,'  - Frame fields: '+JSON.stringify(so.page.input_fields));
							log(LOG_DEBUG,'  - Key 1 is:'+JSON.stringify(so.page.key[1]));

							// If we are in a control method, complete it
							if (control.length) {
								log(LOG_DEBUG,'Last control method is:'+JSON.stringify(control[control.length-1]));

								control[control.length-1].process();

							} else if (so.page.key[1] === '*' || so.page.key[1].match(/[0-9]/)) {
								so.baselineSend('NOACTION',false);
								mode = MODE_RFSENT;

							} else {
								log(LOG_DEBUG,'  - Key 1 is a METHOD check it exists: '+JSON.stringify(so.page.key[1]));

								switch(so.page.key[1]) {
									// User is logging in to system or CUG
									case 'login':
										log(LOG_DEBUG,'  - User: '+so.page.input_fields[0].value+'/'+so.page.input_fields[1].value);

										// In debug mode, we'll authenticate for the user
										if (debug_mode) {
											log(LOG_DEBUG,'   - Debug mode user'+debug_mode.split('/')[0]);
											log(LOG_DEBUG,'   - Debug mode pass'+debug_mode.split('/')[1]);
											if (bbs.login(debug_mode.split('/')[0],'',debug_mode.split('/')[1])) {
												log(LOG_DEBUG,'  - User: '+JSON.stringify(user.number));
												bbs.logon();
												log(LOG_DEBUG,'  - SEND TO EXIT:');

												action = ACTION_EXIT;
												break;
											}
										}

										// If login is successful, we'll exit here
										if (bbs.login(so.page.input_fields[0].value,'',so.page.input_fields[1].value)) {
											log(LOG_DEBUG,'  - User: '+JSON.stringify(user.number));
											bbs.logon();
											log(LOG_DEBUG,'  - SEND TO EXIT:');

											action = ACTION_EXIT;
											break;
										}

										log(LOG_DEBUG,'  ! Login failed for User:'+JSON.stringify(so.page.input_fields[0].value));
										action = ACTION_GOTO;
										next_page = new PageObject(FRAME_LOGIN_FAILED);
										break;

									default:
										// Its assumed that you get here after completing a form and you have pressed 1 to submit that form.
										log(LOG_DEBUG,'  ! EVAL method:'+JSON.stringify(so.page.key));
										if (cc.process()) {
											control.pop();
											log(LOG_DEBUG,'  = Process Completed.');
										}
								}
							/*

							} elseif ($ao = FrameClass\Action::factory($this->fo->route(1),$this,$user,$action,$mode)) {
								$ao->handle();
								$mode = $ao->mode;
								$action = $ao->action;

								if ($ao->page)
									$next_page = $ao->page;

							} else {
								so.baselineSend('ERR_METHOD_NOT_EXIST',false);

								mode = MODE_RFSENT;
							}
							*/
							}

							break;

						case '2':
							so.baselineClear();

							log(LOG_DEBUG,'- MODE_SUBMITRF: Key ['+read+'] ['+pageStr(so)+']');
							// @todo Check if HASH is a valid next destination

							if (so.page.type === 'l') {
								action = ACTION_RELOAD;
								mode = null;

							} else {
								so.baselineSend('MSG_NOTSENT',false);
								mode = MODE_RFNOTSENT;
							}

							/*
							// If a Control method was rejected, we can clear it
							if ($control AND $method->count()) {
								$save = $method->pop();

								if ($method->count()) {
									$control = $method->last()->state['control'];

								} else {
									$mode = $save->state['mode'];
									$action = $save->state['action'];
									$control = FALSE;
								}
							}
							 */

							break;

						case '*':
							action = ACTION_STAR;

							break;
					}

					// Destroy the object.
					cc = null;

					break;

				// Response form after Sent processing
				case MODE_RFSENT:
					so.cursorOff();

					switch (read) {
						case '*':
							action = ACTION_STAR;
							break;
					}

					/*
					// @todo to implement
					if ($read === HASH) {
						if ($x = $this->fo->route(2) AND $x !== '*' AND is_numeric($x)) {
							$next_page = ['frame'=>$x];

						} elseif (FrameModel::where('frame',$this->fo->frame())->where('index',$this->fo->index_next())->exists()) {
							$next_page = ['frame'=>$this->fo->frame(),'index'=>$this->fo->index_next()];

						} elseif ($x = $this->fo->route(0) AND $x !== '*' AND is_numeric($x)) {
							$next_page = ['frame'=>$x];

							// No further routes defined, go home.
						} else {
							$next_page = ['frame'=>0];
						}

						$action = ACTION_GOTO;
					}
					*/

					break;

				// Response form after NOT sending
				case MODE_RFNOTSENT:

				// Response form ERROR
				case MODE_RFERROR:
					so.cursorOff();

					if (((SESSION_EXT === 'vtx') && read === '_') || ((SESSION_EXT === 'tex') && read === '#')) {
						/*
						// @todo to implement
						if ($x = $this->fo->route(2) AND $x !== '*' AND is_numeric($x)) {
							$next_page = ['frame'=>$x];

						} elseif (FrameModel::where('frame',$this->fo->frame())->where('index',$this->fo->index_next())->exists()) {
							$next_page = ['frame'=>$this->fo->frame(),'index'=>$this->fo->index_next()];

						} elseif ($x = $this->fo->route(0) AND $x !== '*' AND is_numeric($x)) {
							$next_page = ['frame'=>$x];

							// No further routes defined, go home.
						} else {
							$next_page = ['frame'=>0];
						}
						*/

						action = ACTION_GOTO;

					} else if (read === '*') {
						action = ACTION_STAR;

						break;
					}

					break;

				default:
					log(LOG_DEBUG,'- SHOULDNT GET HERE: ['+read+']');
					action = ACTION_TERMINATE;
			}
			log(LOG_DEBUG,'MODE END: ['+read+']');
			log(LOG_DEBUG,'------------------------------------------------');

			log(LOG_DEBUG,'------------------------------------------------');
			log(LOG_DEBUG,'ACTION START: ['+read+'] ('+action+')');
			switch (action) {
				// Start command entry
				case ACTION_STAR:
					log(LOG_DEBUG,'- ACTION_STAR: ['+(next_page ? pageStr(next_page) : '')+']');

					// @todo If something on the baseline preserve it
					// @todo This should be SCREEN_LENGTH, not hard coded 24
					so.cursorOn(0,24);
					so.baselineSend('BASESTAR',true);
					action = null;
					mode = MODE_BL;

					// 719 = NodeActionRetrieving
					bbs.replace_text(719,'\1h%s \1n\1gJumping to page');
					bbs.node_action=NODE_RFSD;

					break;

				// Submitting forms
				case ACTION_SUBMITRF:
					action = null;
					mode = MODE_SUBMITRF;
					so.cursorOff();

					log(LOG_DEBUG,'- ACTION_SUBMITRF: ['+so.page.type+']');
					so.baselineSend((so.page.type === 'l' ? 'MSG_LOGON' : 'MSG_SENDORNOT'),true);

					break;

				// Edit a frame
				case ACTION_EDIT:
					log(LOG_DEBUG,'- ACTION_EDIT: ['+JSON.stringify(next_page)+']');

					if ((so.page.type === FRAME_TYPE_MESSAGE) || (! pageEditor(next_page ? next_page.frame : so.frame))) {
						action = null;
						so.cursorOff();
						so.baselineSend('ACCESS_DENIED',false);

						break;
					}

					require('ansitex/load/control/frameedit.js','CONTROL_FRAMEEDIT');

					// If we are editing a specific frame, attempt to load it
					if (next_page) {
						// In case we need to fall back.
						//var current = so;
						so.get(next_page);

						// If the frame doesnt exist, check that the parent frame exists in case we are creating a new one
						// @todo This needs to be reworked with the new page object, and to handle editing new pages
						if (so.page.name.toString() === null) {
							log(LOG_DEBUG,'- ACTION_EDIT: check index: '+next_page.index+' ('+String.fromCharCode(next_page.index.charCodeAt(0)-1)+')');

							// We can always create an 'a' frame
							if (next_page.index !== 'a') {
								so.get(pageStr({frame: next_page.frame, index: String.fromCharCode(next_page.index.charCodeAt(0)-1)}));

								log(LOG_DEBUG,'- ACTION_EDIT: check index: '+JSON.stringify(so)+' ('+String.fromCharCode(next_page.index.charCodeAt(0)-1)+')');
								if (so.page.name.toString() === null) {
									//so = current;
									//current = undefined;
									// sendbaseline ERR_PAGE
									so.baselineSend('ERR_NO_PARENT',false);
									action = mode = null;
									break;
								}
							}

							// New frame
							so.page.name = new PageObject({frame: next_page.frame, index: next_page.index});
							so.page.cost = 0;
							so.page.owner = base64_decode(pageOwner(pageStr(next_page)).logo);
							so.page.content = base64_encode('Start your new page...');
						}
					}

					control.push(new edit(so));

					action = mode = null;
					break;

				// GO Backwards
				case ACTION_BACKUP:
					log(LOG_DEBUG,'- ACTION_BACKUP: history size - '+history.length+' with ['+history.join('|')+']');
					// Do we have anywhere to go, drop the current page from the history
					if (history.length > 1)
						history.pop();

					// @todo If in control...

					next_page = (history.length > 0) ? history[history.length-1] : null;

					log(LOG_DEBUG,'- ACTION_BACKUP: Backing up to ['+JSON.stringify(next_page)+'] current ['+so.page.name.toString()+']');

					// If there is no next page, we'll ignore the request.
					if (! next_page || (next_page.toString() === so.page.name.toString())) {
						action = null;
						break;
					}

				// Goto specific page
				case ACTION_GOTO:
					// Clear any controls
					control = [];

					log(LOG_DEBUG,'- ACTION_GOTO: ['+(next_page.toString()+']'));

					// For logged in users, we'll see if this is a mail page.
					if (user.number) {
						// @todo consider how we do mail security.

						// Echoarea mail summary
						if (/^1[0-9]{6}1$/.test(next_page.frame)) {
							log(LOG_DEBUG,'- ACTION_GOTO - load echoarea summary: ['+next_page.frame+']');

							var ma = new MsgAreas();
							var area = ma.getArea(next_page.frame);

							// If the template page doesnt exist
							// @todo look for a template in the area or group first
							if ((! so.get(new PageObject(MAIL_TEMPLATE_AREA_SUMMARY))) || (! area)) {
								so.baselineSend('ERR_ROUTE',false);
								action = mode = null;
								break;
							}

							// @todo Update the page details from the template
							// Parent
							so.page.name = new PageObject({frame: next_page.frame, index: next_page.index});
							so.page.__properties__.isAccessible = true;
							so.page.__properties__.isPublic = true;
							so.page.build_system_fields(area);

							so.page.key[0] = (''+next_page.frame).substr(0,7);

							// First to me
							so.page.key[1] = atcode('msg_area_msgtome_page',null,null,area);
							// First Unread
							so.page.key[2] = atcode('msg_area_msgunread_page',null,null,area);

							// Oldest
							so.page.key[3] = atcode('msg_area_msgoldest_page',null,null,area);
							// Newest
							so.page.key[4] = atcode('msg_area_msgnewest_page',null,null,area);

							next_page = null;

						// 1zzzzEEnnnn - get a message
						} else if (/^1[0-9]{10}/.test(next_page.frame)) {
							log(LOG_DEBUG,'- ACTION_GOTO - load message: ['+next_page.frame+']');

							if (next_page.index === 'a') {
								require('ansitex/load/control/echomail.js','CONTROL_ECHOMAIL');
								control.push(new echomail(so,next_page.frame));
								action = null;
								next_page = null;
								//log(LOG_DEBUG,'- ACTION_GOTO - control message: ['+JSON.stringify(control[control.length-1])+'] ('+control.length+')');

								if (! control[control.length-1].ready()) {
									log(LOG_DEBUG,'- ACTION_GOTO - control not ready aborting...');
									control.pop();
									mode = null;

									so.baselineSend('ERR_ROUTE',false);
									break;
								}

							// @todo - Show message stats
							} else if (next_page.index === 'b') {
								action = mode = null;
								next_page = null;

								so.baselineSend('ERR_NOT_IMPLEMENTED',false);
								break;

							} else {
								action = mode = null;
								next_page = null;

								so.baselineSend('ERR_ROUTE',false);
								break;
							}
						}
					}

					var current = so.page;			// If we dont have access to the page we load, we need to revert
					if (next_page !== null) {
						if (! so.get(next_page)) {
							log(LOG_DEBUG,'- Next Page: ['+(next_page.toString()+'] doesnt exist?'));

							so.baselineSend('ERR_ROUTE',false);
							action = mode = null;
							break;
						}

						next_page = null;
					}

					// If the user has access to the frame
					if (so.page.accessible) {
						if (so.page.isMember && (so.page.type === FRAME_TYPE_LOGIN)) {
							so.baselineSend('ALREADY_MEMBER',false);
							action = mode = null;
							break;
						}

					// Check if the frame exists, and the user is the Service Provider
					} else {
						so.baselineSend('ACCESS_DENIED',false);
						action = mode = null;
						// Reset the current frame to what it was.
						so.page = current;
						current = undefined;
						break;
					}

					current = undefined;

					log(LOG_DEBUG,'- ACTION_GOTO: next_page ['+JSON.stringify(next_page)+'] last history ['+JSON.stringify(history[history.length-1])+']');

					// Record our history
					if ((! history.length || (pageStr(history[history.length-1]) !== so.page.name)) && (so.page.type !== FRAME_TYPE_LOGIN)) {
						// Ignore the login frames
						if (FRAMES_NO_HISTORY.indexOf(so.page.name.toString()) === -1) {
							history.push(so.page.name);
							log(LOG_DEBUG,'- ACTION_GOTO: Added to history ['+so.page.name.toString()+'] now ['+history.length+']');
						}
					}

				// Load frame
				case ACTION_RELOAD:
					// Clear our current field
					cf = null;

					log(LOG_DEBUG,'- ACTION_RELOAD: ['+(next_page ? pageStr(next_page) : '')+']');
					if (debug_mode && so.page.name.toString() === '98b')
						so.page.key[1] = debug_mode.split('/')[2];

					console.line_counter = 0;	// @todo fix to suppress a pause that is occurring before clear()
					so.cursorOff();

					// 695 = NodeActionMain
					bbs.replace_text(695,'\1h%s \1nViewing \1h*'+so.page.name.toString()+'#\1n');
					bbs.log_str(so.page.name.toString()+'|');
					bbs.node_action=NODE_MAIN;

					switch(so.page.type) {
						// Terminate frame
						case FRAME_TYPE_MAIL_TEMPLATE:
							log(LOG_DEBUG,'- MAIL_TEMPLATE: ['+so.frame+']');
							so.render();
							action = mode = null;

							break;

						// Terminate frame
						case FRAME_TYPE_TERMINATE:
							so.render();
							action = ACTION_TERMINATE;
							mode = null;

							break;

						// External Frame
						// @todo returning from the frame, go to the 0 key if it is set
						case FRAME_TYPE_EXTERNAL:
							var content = base64_decode(so.page.raw);
							log(LOG_DEBUG,'- ACTION_GOTO: EXTERNAL ['+JSON.stringify(content)+']');

							switch(content.replace(/\n/,'')) {
								case 'bbs.user_config()':
								case 'bbs.read_mail(MAIL_YOUR)':
								case 'bbs.scan_subs(SCAN_NEW)':
								case 'bbs.scan_posts()':
								case 'bbs.post_msg()':
									eval(content);

									// Check and see if our shell was changed
									if (user.command_shell !== 'ansitex') {
										exit();
									}

									action = ACTION_BACKUP;
									break;

								default:
									console.putmsg(JSON.stringify(content));
									so.baselineSend('ERR_ROUTE',false);
									action = null;
									break;
							}

							mode = null;
							break;

						case FRAME_TYPE_LOGIN:
							action = null;
							/* fallthrough */

						case FRAME_TYPE_RESPONSE:
							fn = 0;
							cf = null;
							// In case we are reloading the frame, we need to include our input fields
							so.page.build_input_fields();
							so.render();

							log(LOG_DEBUG,'* Response Frame with ['+so.page.input_fields.length+'] fields');

							if (so.page.input_fields.length) {
								cf = so.page.input_fields[fn];
								log(LOG_DEBUG,'cf'+JSON.stringify(cf));

								if (cf) {
									mode = MODE_FIELD;
									so.cursorOn(cf.x+cf.value.length,cf.y);
									log(LOG_DEBUG,'- Current Field:'+JSON.stringify(cf));
									log(LOG_DEBUG,'Writing attribute:'+JSON.stringify(cf.attribute));
									so.attr(cf.attribute);

								// There were no editable fields.
								} else {
									mode = MODE_COMPLETE;
									so.cursorOff();
								}

							} else {
								mode = null;
							}

							// If this is the register page
							if (so.page.name.toString() === (new PageObject(FRAME_REGISTER)).toString()) {
								log(LOG_DEBUG,'Adding REGISTER to control stack');
								require('ansitex/load/control/'+so.page.key[1]+'.js','CONTROL_REGISTER');
								//control.push(eval('new '+so.page.key[1]+'(so);'));
								control.push(new register(so));

							} else if (so.page.name.toString() === (new PageObject(FRAME_SQRL)).toString()) {
								log(LOG_DEBUG,'Adding SQRL to control stack');
								require('ansitex/load/control/'+so.page.key[1]+'.js','CONTROL_SQRL');
								control.push(eval('new '+so.page.key[1]+'(so);'));
								inkey_timeout = 1000;

							} else if (so.page.key[1] && (so.page.type === FRAME_TYPE_RESPONSE) && (typeof(so.page.key[1]) !== 'number')) {
								log(LOG_DEBUG,'Adding METHOD to control stack: '+so.page.key[1]);
								require('ansitex/load/control/'+so.page.key[1]+'.js','CONTROL_'+so.page.key[1].toUpperCase());
								control.push(eval('new '+so.page.key[1]+'(so);'));
							}

							action = null;

							break;

						// Standard Frame
						case FRAME_TYPE_INFO:
						default:
							so.render();
							action = mode = null;
							break;

						// Active frame
					}

					break;
			}
			log(LOG_DEBUG,'ACTION END: ['+read+']');
			log(LOG_DEBUG,'------------------------------------------------');

		} catch (e) {
			log(LOG_ERROR,JSON.stringify(e));
			so.baselineSend('SYS_ERROR',false);
			action = mode = null;
		}
	}

	log(LOG_DEBUG,'- FINISHED');
	if (action === ACTION_TERMINATE) {
		log(LOG_DEBUG,'! Hangup');
		so.cursorOn();
		bbs.hangup();
	}

	// We need to clear the baseline before we exit, esp during transition from login -> logged on
	so.baselineClear();
	exit();
}