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import { serializeStateToUrl } from './utils.js';
const DEFAULT_STATE = {
items: [],
words: [],
status: 'initialized',
workflow_stage: 'building_wordlist',
grid_width: 10,
grid_height: 10,
all_cross: true,
allow_reverse: false,
allow_diagonals: false,
candidates: [],
focused_candidate_index: 0,
message: '',
grid_mode: 'crossword'
};
export function createApp(options = {}) {
const state = JSON.parse(JSON.stringify({ ...DEFAULT_STATE, ...(options.initialState || {}) }));
const interfaces = [];
const history = options.history;
const enableUrlSync = options.enableUrlSync;
function getState() {
return JSON.parse(JSON.stringify(state));
}
function broadcast() {
for (const iface of interfaces) {
iface.onStateChange(getState());
}
}
function syncUrl() {
if (enableUrlSync && history) {
const url = '?' + serializeStateToUrl(state);
history.pushState(null, '', url);
}
}
function registerInterface(iface) {
if (!iface || typeof iface.onStateChange !== 'function') {
throw new Error('Interface must implement onStateChange method');
}
interfaces.push(iface);
}
function start() {
state.status = 'running';
broadcast();
}
function stop() {
state.status = 'stopped';
broadcast();
}
function addItem(value) {
const id = Date.now() + '-' + Math.random().toString(36).substr(2, 9);
state.items.push({ id, value, timestamp: Date.now() });
broadcast();
}
function removeItem(id) {
state.items = state.items.filter(item => item.id !== id);
broadcast();
}
function handleEvent({ type, payload }) {
switch (type) {
case 'ADD_ITEM':
addItem(payload);
break;
case 'REMOVE_ITEM':
removeItem(payload);
break;
case 'ADD_WORD': {
if (!payload || !payload.trim()) break;
const id = Date.now() + '-' + Math.random().toString(36).substr(2, 9);
state.words.unshift({ id, value: payload.trim().toUpperCase() });
broadcast();
syncUrl();
break;
}
case 'REMOVE_WORD':
state.words = state.words.filter(w => w.id !== payload);
broadcast();
syncUrl();
break;
case 'REORDER_WORD': {
const { wordId, newIndex } = payload;
const idx = state.words.findIndex(w => w.id === wordId);
if (idx === -1) break;
const [word] = state.words.splice(idx, 1);
const clamped = Math.max(0, Math.min(newIndex, state.words.length));
state.words.splice(clamped, 0, word);
broadcast();
syncUrl();
break;
}
case 'SET_GRID_SIZE':
state.grid_width = payload.width;
state.grid_height = payload.height;
broadcast();
syncUrl();
break;
case 'SET_GRID_OPTIONS':
if (payload.all_cross !== undefined) state.all_cross = payload.all_cross;
if (payload.allow_reverse !== undefined) state.allow_reverse = payload.allow_reverse;
if (payload.allow_diagonals !== undefined) state.allow_diagonals = payload.allow_diagonals;
broadcast();
syncUrl();
break;
case 'START_GENERATION':
if (!state.words || state.words.length === 0) {
state.message = 'Please add at least one word';
broadcast();
break;
}
state.workflow_stage = 'finding_candidates';
state.message = 'Generating candidate grids...';
broadcast();
setTimeout(() => runGeneration(), 0);
break;
case 'FOCUS_CANDIDATE':
state.focused_candidate_index = payload;
broadcast();
break;
case 'SELECT_CANDIDATE':
state.workflow_stage = 'candidate_selected';
state.message = 'Grid created successfully!';
broadcast();
break;
case 'SELECT_CROSSWORD':
state.workflow_stage = 'candidate_selected';
state.grid_mode = 'crossword';
state.message = 'Crossword created successfully!';
broadcast();
break;
default:
// Unknown event, ignore silently
break;
}
}
function runGeneration() {
const result = make_grids(
state.words.map(w => w.value),
state.grid_width, state.grid_height,
5000, state.all_cross, state.allow_diagonals, state.allow_reverse,
(found, max) => {
state.message = `Generating candidate grids... (${found}/${max} found)`;
broadcast();
}
);
state.candidates = result.payload;
state.focused_candidate_index = 0;
if (result.payload.length > 0) {
state.workflow_stage = 'exploring_candidates';
let msg = result.info.message;
if (result.info.lost_words.length > 0) {
msg += '\nCould not fit: ' + result.info.lost_words.join(', ');
}
if (result.info.used_words.length > 0) {
msg += '\nUsed words: ' + result.info.used_words.join(', ');
}
state.message = msg;
} else {
state.workflow_stage = 'building_wordlist';
state.message = 'Failed to generate grids. ' + result.info.message;
}
broadcast();
}
return {
getState,
registerInterface,
start,
stop,
addItem,
removeItem,
handleEvent
};
}
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