51 lines
1.7 KiB
TypeScript
51 lines
1.7 KiB
TypeScript
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export type Player = {
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username: string;
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level: number;
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};
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export type Result<T> = { ok: true; value: T } | { ok: false; error: string };
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export function playerFromUnknown(input: unknown): Result<Player> {
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if (input === undefined) {
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return { ok: false, error: "no input" };
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}
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if (input === null) {
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return { ok: false, error: "no input" };
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}
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if (typeof input === "string") {
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if (!/^[\d\w(:?\\\-)]+\-\d+$/.test(input)) {
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return { ok: false, error: "malformed player" };
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}
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const splits = input.split("-");
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let username = splits[0];
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if (username.includes("\\-")) {
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username = username.replaceAll("\\-", "-");
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}
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if (splits[1].startsWith("0") && splits[1].length >= 2) {
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return { ok: false, error: "malformed player" };
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}
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const level = parseInt(splits[1]);
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return { ok: true, value: { username, level } };
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} else if (typeof input === "object") {
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if (Object.keys(input).length < 2) {
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return { ok: false, error: "malformed player" };
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}
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if (Object.keys(input).length > 2) {
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return { ok: false, error: "too much information" };
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}
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if (!("username" in input && "level" in input)) {
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return { ok: false, error: "malformed player" };
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}
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if (typeof input.username !== "string") {
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return { ok: false, error: "malformed player" };
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}
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if (typeof input.level !== "number") {
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return { ok: false, error: "malformed player" };
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}
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const { username, level } = input;
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return { ok: true, value: { username, level } };
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} else {
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return { ok: false, error: "malformed player" };
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}
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}
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