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// @ts-nocheckimport { decodeBase64, encodeBase64, MaybePromise, PothosValidationError, SchemaTypes, } from '../../core/index.ts';import { ConnectionShape, DefaultConnectionArguments } from '../types.ts';// Since we know the return types of the connection helpers, we can// remove the MaybePromise wrappers on the ConnectionResult shapetype RemoveMaybePromiseProps<T> = {    [K in keyof T]: Awaited<T[K]>;};interface ResolveOffsetConnectionOptions {    args: DefaultConnectionArguments;    defaultSize?: number;    maxSize?: number;}export interface ResolveCursorConnectionOptions<T> {    args: DefaultConnectionArguments;    defaultSize?: number;    maxSize?: number;    toCursor: (value: T, nodes: T[]) => string;}export interface ResolveCursorConnectionArgs {    before?: string;    after?: string;    limit: number;    inverted: boolean;}interface ResolveArrayConnectionOptions {    args: DefaultConnectionArguments;    defaultSize?: number;    maxSize?: number;}const OFFSET_CURSOR_PREFIX = "OffsetConnection:";const DEFAULT_MAX_SIZE = 100;const DEFAULT_SIZE = 20;export function offsetForArgs(options: ResolveOffsetConnectionOptions) {    const { before, after, first, last } = options.args;    const defaultSize = options.defaultSize ?? DEFAULT_SIZE;    const maxSize = options.maxSize ?? DEFAULT_MAX_SIZE;    const beforeOffset = before ? cursorToOffset(before) : Number.POSITIVE_INFINITY;    const afterOffset = after ? cursorToOffset(after) : 0;    if (first != null && first < 0) {        throw new PothosValidationError("Argument \"first\" must be a non-negative integer");    }    if (last != null && last < 0) {        throw new PothosValidationError("Argument \"last\" must be a non-negative integer");    }    let startOffset = after ? afterOffset + 1 : 0;    let endOffset = before ? Math.max(beforeOffset, startOffset) : Number.POSITIVE_INFINITY;    if (first != null) {        endOffset = Math.min(endOffset, startOffset + first);    }    if (last != null) {        if (endOffset === Number.POSITIVE_INFINITY) {            throw new PothosValidationError("Argument \"last\" can only be used in combination with \"before\" or \"first\"");        }        startOffset = Math.max(startOffset, endOffset - last);    }    const size = first == null && last == null ? defaultSize : endOffset - startOffset;    endOffset = Math.min(endOffset, startOffset + Math.min(size, maxSize));    const totalSize = endOffset - startOffset;    return {        offset: startOffset,        limit: totalSize + 1,        hasPreviousPage: startOffset > 0,        expectedSize: totalSize,        hasNextPage: (resultSize: number) => resultSize > totalSize,    };}export async function resolveOffsetConnection<T, U extends Promise<readonly T[] | null> | readonly T[] | null>(options: ResolveOffsetConnectionOptions, resolve: (params: {    offset: number;    limit: number;}) => U & (MaybePromise<readonly T[] | null> | null)): Promise<RemoveMaybePromiseProps<ConnectionShape<SchemaTypes, NonNullable<T>, U extends NonNullable<U> ? (Promise<null> extends U ? true : false) : true, T extends NonNullable<T> ? false : {    list: false;    items: true;}, false>>> {    const { limit, offset, expectedSize, hasPreviousPage, hasNextPage } = offsetForArgs(options);    const nodes = (await resolve({ offset, limit })) as T[] | null;    if (!nodes) {        return nodes as never;    }    const edges = nodes.map((value, index) => value == null        ? null        : {            cursor: offsetToCursor(offset + index),            node: value,        });    const trimmed = edges.slice(0, expectedSize);    return {        edges: trimmed as never,        pageInfo: {            startCursor: offsetToCursor(offset),            endCursor: offsetToCursor(offset + trimmed.length - 1),            hasPreviousPage,            hasNextPage: hasNextPage(nodes.length),        },    };}export function cursorToOffset(cursor: string): number {    const string = decodeBase64(cursor);    if (!string.startsWith(OFFSET_CURSOR_PREFIX)) {        throw new PothosValidationError(`Invalid offset cursor ${OFFSET_CURSOR_PREFIX}`);    }    return Number.parseInt(string.slice(OFFSET_CURSOR_PREFIX.length), 10);}export function offsetToCursor(offset: number): string {    return encodeBase64(`${OFFSET_CURSOR_PREFIX}${offset}`);}export function resolveArrayConnection<T>(options: ResolveArrayConnectionOptions, array: readonly T[]): RemoveMaybePromiseProps<ConnectionShape<SchemaTypes, NonNullable<T>, false, T extends NonNullable<T> ? false : {    list: false;    items: true;}, false>> {    const { limit, offset, expectedSize, hasPreviousPage, hasNextPage } = offsetForArgs(options);    const nodes = array.slice(offset, offset + limit);    const edges = nodes.map((value, index) => value == null        ? null        : {            cursor: offsetToCursor(offset + index),            node: value,        });    const trimmed = edges.slice(0, expectedSize);    return {        edges: trimmed as never,        pageInfo: {            startCursor: offsetToCursor(offset),            endCursor: offsetToCursor(offset + trimmed.length - 1),            hasPreviousPage,            hasNextPage: hasNextPage(nodes.length),        },    };}function parseCurserArgs(options: ResolveOffsetConnectionOptions) {    const { before, after, first, last } = options.args;    const defaultSize = options.defaultSize ?? DEFAULT_SIZE;    const maxSize = options.maxSize ?? DEFAULT_MAX_SIZE;    if (first != null && first < 0) {        throw new PothosValidationError("Argument \"first\" must be a non-negative integer");    }    if (last != null && last < 0) {        throw new PothosValidationError("Argument \"last\" must be a non-negative integer");    }    const limit = Math.min(first ?? last ?? defaultSize, maxSize) + 1;    const inverted = after ? !!last && !first : (!!before && !first) || (!first && !!last);    return {        before: before ?? void 0,        after: after ?? void 0,        limit,        expectedSize: limit - 1,        inverted,        hasPreviousPage: (resultSize: number) => (inverted ? resultSize >= limit : !!after),        hasNextPage: (resultSize: number) => (inverted ? !!before : resultSize >= limit),    };}type NodeType<T> = T extends (infer N)[] | Promise<(infer N)[] | null> | null ? N : never;export async function resolveCursorConnection<U extends Promise<readonly unknown[] | null> | readonly unknown[] | null>(options: ResolveCursorConnectionOptions<NodeType<U>>, resolve: (params: ResolveCursorConnectionArgs) => U): Promise<RemoveMaybePromiseProps<ConnectionShape<SchemaTypes, NodeType<U>, false, false, false>>> {    const { before, after, limit, inverted, expectedSize, hasPreviousPage, hasNextPage } = parseCurserArgs(options);    const nodes = (await resolve({ before, after, limit, inverted })) as NodeType<U>[] | null;    if (!nodes) {        return nodes as never;    }    const trimmed = nodes.slice(0, expectedSize);    if (inverted) {        trimmed.reverse();    }    const edges = trimmed.map((value) => value == null        ? null        : {            cursor: options.toCursor(value, trimmed),            node: value,        });    const startCursor = edges.length > 0 ? edges[0]?.cursor : options.args.after ?? options.args.before ?? "";    const endCursor = edges.length > 0        ? edges[edges.length - 1]?.cursor        : options.args.after ?? options.args.before ?? "";    return {        edges: edges as never,        pageInfo: {            startCursor,            endCursor,            hasPreviousPage: hasPreviousPage(nodes.length),            hasNextPage: hasNextPage(nodes.length),        },    };}