@stackend/api/util/graphql.js

JS bindings to api.stackend.com

"use strict";
var __assign = (this && this.__assign) || function () {
    __assign = Object.assign || function(t) {
        for (var s, i = 1, n = arguments.length; i < n; i++) {
            s = arguments[i];
            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
                t[p] = s[p];
        }
        return t;
    };
    return __assign.apply(this, arguments);
};
Object.defineProperty(exports, "__esModule", { value: true });
exports._objectToQueryParameters = exports._arrayToQueryParameters = exports.toQueryParameters = exports.mapGraphQLList = exports.forEachGraphQLList = exports.getPreviousCursor = exports.getNextCursor = exports.previousPage = exports.nextPage = void 0;
/**
 * Create a request to the next page
 * @param req
 * @param after
 * @param first, if not present taken from req.last or defaults to 10
 */
function nextPage(req, after, first) {
    var r = __assign(__assign({}, req), { after: after, first: first || req.first || req.last || 10 });
    delete r['before'];
    delete r['last'];
    return r;
}
exports.nextPage = nextPage;
/**
 * Create a request to the previous page
 * @param req
 * @param before
 * @param last, if not present taken from req.first or defaults to 10
 */
function previousPage(req, before, last) {
    var r = __assign(__assign({}, req), { before: before, last: last || req.last || req.first || 10 });
    delete r['after'];
    delete r['first'];
    return r;
}
exports.previousPage = previousPage;
/**
 * Get the next cursor for a list, or null, if not available
 * @param list
 */
function getNextCursor(list) {
    if (list.pageInfo.hasNextPage && list.edges.length !== 0) {
        var x = list.edges[list.edges.length - 1];
        return x.cursor;
    }
    return null;
}
exports.getNextCursor = getNextCursor;
/**
 * Get the previous cursor for a list, or null, if not available
 * @param list
 */
function getPreviousCursor(list) {
    if (list.pageInfo.hasPreviousPage && list.edges.length !== 0) {
        var x = list.edges[0];
        return x.cursor;
    }
    return null;
}
exports.getPreviousCursor = getPreviousCursor;
/**
 * Iterate all list nodes
 * @param list
 * @param apply
 */
function forEachGraphQLList(list, apply) {
    if (!list || !list.edges) {
        return;
    }
    list.edges.forEach(function (n) { return apply(n.node); });
}
exports.forEachGraphQLList = forEachGraphQLList;
/**
 * Map each node of a graph ql list
 * @param list
 * @param apply
 */
function mapGraphQLList(list, apply) {
    if (!list || !list.edges) {
        return [];
    }
    return list.edges.map(function (value, index) { return apply(value.node, index); });
}
exports.mapGraphQLList = mapGraphQLList;
/**
 * Convert a js object into graphql format query
 * @param o
 */
function toQueryParameters(o) {
    if (o === null) {
        return 'null';
    }
    var t = typeof o;
    if (t === 'undefined') {
        return 'null';
    }
    if (t !== 'object') {
        // Primitive
        return JSON.stringify(o);
    }
    if (Array.isArray(o)) {
        return _arrayToQueryParameters(o);
    }
    return _objectToQueryParameters(o);
}
exports.toQueryParameters = toQueryParameters;
function _arrayToQueryParameters(a) {
    var r = '[';
    for (var i = 0; i < a.length; i++) {
        var l = a[i];
        if (i != 0) {
            r += ',';
        }
        r += toQueryParameters(l);
    }
    r += ']';
    return r;
}
exports._arrayToQueryParameters = _arrayToQueryParameters;
function _objectToQueryParameters(o) {
    var r = '{';
    Object.keys(o).forEach(function (k, i) {
        if (i !== 0) {
            r += ',';
        }
        r += k + ':';
        var v = o[k];
        r += toQueryParameters(v);
    });
    r += '}';
    return r;
}
exports._objectToQueryParameters = _objectToQueryParameters;
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