MyCrypto/common/sagas/transaction/current/currentValue.ts

76 lines
2.8 KiB
TypeScript

import {
isEtherTransaction,
getUnit,
getDecimal,
getCurrentValue,
ICurrentValue
} from 'selectors/transaction';
import { select, call, put, takeEvery } from 'redux-saga/effects';
import { SagaIterator } from 'redux-saga';
import { setTokenValue, setValueField } from 'actions/transaction/actionCreators';
import {
SetCurrentValueAction,
TypeKeys,
TSetValueField,
TSetTokenValue
} from 'actions/transaction';
import { toTokenBase } from 'libs/units';
import { validateInput, IInput } from 'sagas/transaction/validationHelpers';
import { validNumber, validPositiveNumber, validDecimal } from 'libs/validators';
export function* setCurrentValue(action: SetCurrentValueAction): SagaIterator {
const etherTransaction = yield select(isEtherTransaction);
const setter = etherTransaction ? setValueField : setTokenValue;
return yield call(valueHandler, action, setter);
}
export function* valueHandler(
{ payload }: SetCurrentValueAction,
setter: TSetValueField | TSetTokenValue
) {
const decimal: number = yield select(getDecimal);
const unit: string = yield select(getUnit);
const isEth = yield select(isEtherTransaction);
const validNum = isEth ? validNumber : validPositiveNumber;
if (!validNum(parseInt(payload, 10)) || !validDecimal(payload, decimal)) {
return yield put(setter({ raw: payload, value: null }));
}
const value = toTokenBase(payload, decimal);
const isValid: boolean = yield call(validateInput, value, unit);
yield put(setter({ raw: payload, value: isValid ? value : null }));
}
export function* revalidateCurrentValue(): SagaIterator {
const etherTransaction = yield select(isEtherTransaction);
const currVal: ICurrentValue = yield select(getCurrentValue);
const reparsedValue: null | ICurrentValue = yield call(reparseCurrentValue, currVal);
const unit: string = yield select(getUnit);
const setter = etherTransaction ? setValueField : setTokenValue;
if (!reparsedValue || !reparsedValue.value) {
return yield put(setter({ raw: currVal.raw, value: null }));
}
const isValid: boolean = yield call(validateInput, reparsedValue.value, unit);
yield put(setter({ raw: reparsedValue.raw, value: isValid ? reparsedValue.value : null }));
}
export function* reparseCurrentValue(value: IInput): SagaIterator {
const isEth = yield select(isEtherTransaction);
const decimal = yield select(getDecimal);
const validNum = isEth ? validNumber : validPositiveNumber;
if (validNum(parseInt(value.raw, 10)) && validDecimal(value.raw, decimal)) {
return {
raw: value.raw,
value: toTokenBase(value.raw, decimal)
};
} else {
return null;
}
}
export const currentValue = [
takeEvery([TypeKeys.CURRENT_VALUE_SET], setCurrentValue),
takeEvery([TypeKeys.GAS_LIMIT_FIELD_SET, TypeKeys.GAS_PRICE_FIELD_SET], revalidateCurrentValue)
];