'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _promise = require('./promise');
var _promise2 = _interopRequireDefault(_promise);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
// this is essentially the "update sugar" function from daleharvey/pouchdb#1388
// the diffFun tells us what delta to apply to the doc. it either returns
// the doc, or false if it doesn't need to do an update after all
function upsert(db, docId, diffFun) {
return new _promise2.default(function (fulfill, reject) {
db.get(docId, function (err, doc) {
if (err) {
/* istanbul ignore next */
if (err.status !== 404) {
return reject(err);
}
doc = {};
}
// the user might change the _rev, so save it for posterity
var docRev = doc._rev;
var newDoc = diffFun(doc);
if (!newDoc) {
// if the diffFun returns falsy, we short-circuit as
// an optimization
return fulfill({ updated: false, rev: docRev });
}
// users aren't allowed to modify these values,
// so reset them here
newDoc._id = docId;
newDoc._rev = docRev;
fulfill(tryAndPut(db, newDoc, diffFun));
});
});
}
function tryAndPut(db, doc, diffFun) {
return db.put(doc).then(function (res) {
return {
updated: true,
rev: res.rev
};
}, function (err) {
/* istanbul ignore next */
Iif (err.status !== 409) {
throw err;
}
return upsert(db, doc._id, diffFun);
});
}
exports.default = upsert;
module.exports = exports['default']; |