mongoose-history-diff/lib/index.js

A mongoose plugin to take diffs and history of your documents

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
var __generator = (this && this.__generator) || function (thisArg, body) {
    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
    return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
    function verb(n) { return function (v) { return step([n, v]); }; }
    function step(op) {
        if (f) throw new TypeError("Generator is already executing.");
        while (_) try {
            if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
            if (y = 0, t) op = [op[0] & 2, t.value];
            switch (op[0]) {
                case 0: case 1: t = op; break;
                case 4: _.label++; return { value: op[1], done: false };
                case 5: _.label++; y = op[1]; op = [0]; continue;
                case 7: op = _.ops.pop(); _.trys.pop(); continue;
                default:
                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
                    if (t[2]) _.ops.pop();
                    _.trys.pop(); continue;
            }
            op = body.call(thisArg, _);
        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
    }
};
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
var diff_1 = __importDefault(require("./diff"));
var DiffModel_1 = __importDefault(require("./DiffModel"));
var utils_1 = require("./utils");
function plugin(schema, options) {
    var versionKey = schema.get('versionKey');
    if (!versionKey)
        throw new Error("You must provide 'versionKey' option to your schema or remain it as default");
    diff_1.default.orderIndependent = (options === null || options === void 0 ? void 0 : options.orderIndependent) || false;
    diff_1.default.excludedFields = utils_1.getExcludedFields(schema);
    schema.static('diffModel', function () {
        var collectionName = (options === null || options === void 0 ? void 0 : options.diffCollectionName) || this.collection.name + "_diff";
        return DiffModel_1.default(this.collection.conn, collectionName);
    });
    schema.post('init', function () {
        this._original = this.toObject();
    });
    schema.pre('save', function () {
        return __awaiter(this, void 0, void 0, function () {
            var lhs, rhs, version, Diff, diffs;
            return __generator(this, function (_a) {
                switch (_a.label) {
                    case 0:
                        if (!(!this.isNew && this._original)) return [3, 4];
                        return [4, this.increment()];
                    case 1:
                        _a.sent();
                        lhs = this._original;
                        rhs = this.toObject();
                        version = this[versionKey] + 1;
                        Diff = this.constructor.diffModel();
                        diffs = diff_1.default.findDiff(lhs, rhs);
                        if (!((diffs === null || diffs === void 0 ? void 0 : diffs.length) > 0)) return [3, 3];
                        return [4, Diff.createDiff(lhs._id, version, diffs)];
                    case 2:
                        _a.sent();
                        _a.label = 3;
                    case 3:
                        this._original = null;
                        _a.label = 4;
                    case 4: return [2];
                }
            });
        });
    });
}
exports.default = plugin;