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const initialState = {
devices: new Map(),
positions: new Map()
};
function updateMap(map, array, key) {
for (let value of array) {
map.set(value[key], value);
}
return map;
}
function rootReducer(state = initialState, action) {
switch (action.type) {
case 'UPDATE_DEVICES':
return Object.assign({}, {
...state,
devices: updateMap(state.devices, action.devices, 'id')
});
case 'UPDATE_POSITIONS':
return Object.assign({}, {
...state,
positions: updateMap(state.positions, action.positions, 'deviceId')
});
case 'SELECT_DEVICE':
return Object.assign({}, {
...state,
selectedDevice: action.device.id
});
default:
return state;
}
}
export default rootReducer
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