import type { Infer } from "superstruct";
import { currentUser, redeemedPledge, sessionInfo } from "./structs.js";

// Generic type helpers

type Brand<B> = { __brand: B };

export type Branded<T, B> = T & Brand<B>;

/**
 * Make properties in union K required in T.
 *
 * @example
 * ```ts
 * interface User {
 *   id: string;
 *   name?: string;
 *   email?: string;
 * }
 *
 * type UserWithRequiredName = RequiredPick<User, 'name'>;
 * // Result: { id: string; name: string; email?: string; }
 * ```
 */
export type RequiredPick<T, K extends keyof T> = T & Required<Pick<T, K>>;

/**
 * A branded string.
 *
 * Use this type to make a HTML string as trusted. This can be either HTML
 * coming from a source that we know is safe (statically generated markdown
 * that exists in our codebase) or sanitized user-generated content.
 */
export type TrustedHtml = Branded<string, "TrustedHtml">;

// Common ITC types

export type CurrentUser = Infer<ReturnType<typeof currentUser>>;

export type SessionInfo = Infer<ReturnType<typeof sessionInfo>>;

export type RedeemedPledge = Infer<ReturnType<typeof redeemedPledge>>;

export type FailurePayload =
  | {
      type: "API_ERROR";
      code: number;
    }
  | {
      type: "NETWORK_ERROR" | "UNKNOWN_ERROR" | "VALIDATION_ERROR";
    };