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import { Web3Wrapper } from '@0x/web3-wrapper';
import { Provider } from 'ethereum-types';
import * as _ from 'lodash';
import { LOADING_ACCOUNT, NO_ACCOUNT } from '../constants';
import { Maybe, Network, OrderSource, ProviderState } from '../types';
import { assetBuyerFactory } from './asset_buyer_factory';
import { providerFactory } from './provider_factory';
export const providerStateFactory = {
getInitialProviderState: (orderSource: OrderSource, network: Network, provider?: Provider): ProviderState => {
if (!_.isUndefined(provider)) {
return providerStateFactory.getInitialProviderStateFromProvider(orderSource, network, provider);
}
const providerStateFromWindowIfExits = providerStateFactory.getInitialProviderStateFromWindowIfExists(
orderSource,
network,
);
if (providerStateFromWindowIfExits) {
return providerStateFromWindowIfExits;
} else {
return providerStateFactory.getInitialProviderStateFallback(orderSource, network);
}
},
getInitialProviderStateFromProvider: (
orderSource: OrderSource,
network: Network,
provider: Provider,
): ProviderState => {
const providerState: ProviderState = {
provider,
web3Wrapper: new Web3Wrapper(provider),
assetBuyer: assetBuyerFactory.getAssetBuyer(provider, orderSource, network),
account: LOADING_ACCOUNT,
};
return providerState;
},
getInitialProviderStateFromWindowIfExists: (orderSource: OrderSource, network: Network): Maybe<ProviderState> => {
const injectedProviderIfExists = providerFactory.getInjectedProviderIfExists();
if (!_.isUndefined(injectedProviderIfExists)) {
const providerState: ProviderState = {
provider: injectedProviderIfExists,
web3Wrapper: new Web3Wrapper(injectedProviderIfExists),
assetBuyer: assetBuyerFactory.getAssetBuyer(injectedProviderIfExists, orderSource, network),
account: LOADING_ACCOUNT,
};
return providerState;
} else {
return undefined;
}
},
getInitialProviderStateFallback: (orderSource: OrderSource, network: Network): ProviderState => {
const provider = providerFactory.getFallbackNoSigningProvider(network);
const providerState: ProviderState = {
provider,
web3Wrapper: new Web3Wrapper(provider),
assetBuyer: assetBuyerFactory.getAssetBuyer(provider, orderSource, network),
account: NO_ACCOUNT,
};
return providerState;
},
};
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