@mkeen/rxcouch/dist/couchdbdocumentcollection.js

Real Time RxJs Based CouchDB Client

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.CouchDBDocumentCollection = void 0;
var rxjs_1 = require("rxjs");
var js_sha256_1 = require("js-sha256");
var _ = require("lodash");
var CouchDBDocumentCollection = /** @class */ (function () {
    function CouchDBDocumentCollection() {
        this.ids = new rxjs_1.BehaviorSubject([]);
        this.documents = {};
        this.snapshots = {};
    }
    CouchDBDocumentCollection.prototype.changed = function (document) {
        // todo, dont let undefined get this far
        if (!document) {
            return false;
        }
        var docCopy = JSON.parse(JSON.stringify(document));
        if (this.isPreDocument(docCopy)) {
            return true;
        }
        delete docCopy._rev;
        var snapshot = this.snapshots[docCopy._id];
        if (snapshot === undefined) {
            return true;
        }
        return snapshot !== js_sha256_1.sha256(JSON.stringify(docCopy));
    };
    CouchDBDocumentCollection.prototype.snapshot = function (document) {
        var docCopy = JSON.parse(JSON.stringify(document));
        delete docCopy._rev;
        return this.snapshots[docCopy._id] = js_sha256_1.sha256(JSON.stringify(docCopy));
    };
    CouchDBDocumentCollection.prototype.clear = function () {
        this.documents = {};
        this.ids.next([]);
    };
    CouchDBDocumentCollection.prototype.doc = function (document) {
        if (typeof (document) === 'string') {
            return this.documents[document];
        }
        if (this.isKnownDocument(document._id)) {
            if (this.changed(document)) {
                this.snapshot(document);
                this.documents[document._id].next(document);
            }
            return this.documents[document._id];
        }
        else {
            this.add(document);
            this.snapshot(document);
        }
        return this.documents[document._id];
    };
    CouchDBDocumentCollection.prototype.isKnownDocument = function (document_id) {
        return this.documents[document_id] !== undefined;
    };
    CouchDBDocumentCollection.prototype.isStoredCouchDBDocument = function (entity) {
        return '_id' in entity && '_rev' in entity;
    };
    CouchDBDocumentCollection.prototype.isPreDocument = function (item) {
        return !this.isStoredCouchDBDocument(item);
    };
    CouchDBDocumentCollection.prototype.add = function (document) {
        if (!this.documents[document._id]) {
            this.documents[document._id] = new rxjs_1.BehaviorSubject(document);
            this.ids.next(_.sortBy(// todo: I don't think this sort is needed
            _.union(this.ids.value, [document._id])));
        }
    };
    CouchDBDocumentCollection.prototype.remove = function (documentId) {
        var index = this.ids.value.indexOf(documentId);
        if (index !== -1) {
            this.ids.next(this.ids.value.splice(index, 1));
            delete this.documents[documentId];
        }
    };
    return CouchDBDocumentCollection;
}());
exports.CouchDBDocumentCollection = CouchDBDocumentCollection;
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