zcash-grant-system/frontend/client/utils/validators.ts

59 lines
1.6 KiB
TypeScript

export function getAmountError(amount: number, max: number = Infinity, min?: number) {
if (amount < 0) {
return 'Amount must be a positive number';
} else if (
amount.toFixed(3).length < amount.toString().length ||
amount.toString().includes('1e')
) {
return 'Must be in increments of 0.001';
} else if (amount > max) {
return `Cannot exceed maximum (${max} ZEC)`;
} else if (min && amount < min) {
return `Must be at least ${min} ZEC`;
}
return null;
}
export function getAmountErrorFromString(amount: string, max?: number, min?: number) {
const parsedAmount = parseFloat(amount)
if (Number.isNaN(parsedAmount)) {
return 'Not a valid number'
}
// prevents "-0" from being valid...
if (amount[0] === '-') {
return 'Amount must be a positive number'
}
return getAmountError(parsedAmount, max, min)
}
export function isValidEmail(email: string): boolean {
return /\S+@\S+\.\S+/.test(email);
}
// Uses simple regex to validate addresses, doesn't check checksum or network
export function isValidTAddress(address: string): boolean {
if (/^t[a-zA-Z0-9]{34}$/.test(address)) {
return true;
}
return false;
}
export function isValidSproutAddress(address: string): boolean {
if (/^z[a-zA-Z0-9]{94}$/.test(address)) {
return true;
}
return false;
}
export function isValidSaplingAddress(address: string): boolean {
if (/^z(s)?(reg)?(testsapling)?[a-zA-Z0-9]{76}$/.test(address)) {
return true;
}
return false;
}
export function isValidAddress(a: string): boolean {
return isValidTAddress(a) || isValidSproutAddress(a) || isValidSaplingAddress(a);
}