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import * as keys from './keys';
import * as inputActions from '../actions/input';
import backgroundReducers from '../reducers/background';
import commandReducer from '../reducers/command';
import inputReducers from '../reducers/input';
let inputState = inputReducers(undefined, {});
const keyQueueChanged = (sender, prevState, state) => {
if (state.keys.length === 0) {
return Promise.resolve();
}
let prefix = keys.asKeymapChars(state.keys);
let matched = Object.keys(keys.defaultKeymap).filter((keys) => {
return keys.startsWith(prefix);
});
if (matched.length == 0) {
return handleMessage(inputActions.clearKeys(), sender);
} else if (matched.length > 1 || matched.length === 1 && prefix !== matched[0]) {
return Promise.resolve();
}
let action = keys.defaultKeymap[matched];
return handleMessage(inputActions.clearKeys(), sender).then(() => {
return backgroundReducers(undefined, action, sender).then(() => {
return browser.tabs.sendMessage(sender.tab.id, action);
});
});
};
const handleMessage = (action, sender) => {
let nextInputState = inputReducers(inputState, action);
if (JSON.stringify(nextInputState) !== JSON.stringify(inputState)) {
let prevState = inputState;
inputState = nextInputState;
return keyQueueChanged(sender, prevState, inputState);
}
return backgroundReducers(undefined, action, sender).then(() => {
return commandReducer(undefined, action, sender).then(() => {
return browser.tabs.sendMessage(sender.tab.id, action);
});
});
};
browser.runtime.onMessage.addListener(handleMessage);
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