banana/definma-api
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sorting for direct sample properties added

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VLE2FE
2020-06-26 09:38:28 +02:00
parent 49f7a475b7
commit 43413001e9
4 changed files with 101 additions and 15 deletions
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54
src/routes/sample.ts
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@ -19,7 +19,7 @@ import db from '../db';
const router = express.Router();
router.get('/samples', (req, res, next) => {
router.get('/samples', async (req, res, next) => {
if (!req.auth(res, ['read', 'write', 'maintain', 'dev', 'admin'], 'all')) return;
const {error, value: filters} = SampleValidate.query(req.query);
@ -37,29 +37,55 @@ router.get('/samples', (req, res, next) => {
else { // default
status = {status: globals.status.validated};
}
const query = SampleModel.find(status);
const sort = [];
let paging = {}
// sorting
filters.sort = filters.sort.split('-');
filters.sort[0] = filters.sort[0] === 'added' ? '_id' : filters.sort[0]; // route added sorting criteria to _id
filters.sort[1] = filters.sort[1] === 'desc' ? -1 : 1;
if (!filters['to-page']) { // set to-page default
filters['to-page'] = 0;
}
if (filters['from-id']) { // from-id specified
const fromSample = SampleValidate.output(await SampleModel.findById(filters['from-id']).lean().exec().catch(err => {next(err);}));
if (fromSample instanceof Error) return;
if ((filters['to-page'] === 0 && filters.sort[1] === 1) || (filters.sort[1] * filters['to-page'] > 0)) { // asc
paging = {$or: [{[filters.sort[0]]: {$gt: fromSample[filters.sort[0]]}}, {$and: [{[filters.sort[0]]: fromSample[filters.sort[0]]}, {_id: {$gte: mongoose.Types.ObjectId(filters['from-id'])}}]}]};
sort.push([filters.sort[0], 1]);
sort.push(['_id', 1]);
}
else {
paging = {$or: [{[filters.sort[0]]: {$lt: fromSample[filters.sort[0]]}}, {$and: [{[filters.sort[0]]: fromSample[filters.sort[0]]}, {_id: {$lte: mongoose.Types.ObjectId(filters['from-id'])}}]}]};
sort.push([filters.sort[0], -1]);
sort.push(['_id', -1]);
}
}
else { // sort from beginning
sort.push([filters.sort[0], filters.sort[1]]); // set _id as secondary sort
sort.push(['_id', filters.sort[1]]); // set _id as secondary sort
}
const query = SampleModel.find({$and: [status, paging]});
if (filters['page-size']) {
query.limit(filters['page-size']);
}
if (filters['from-id']) {
if (filters['to-page'] && filters['to-page'] < 0) {
query.lt('_id', mongoose.Types.ObjectId(filters['from-id'])); // TODO: consider sorting
query.sort({_id: -1});
}
else {
query.gte('_id', mongoose.Types.ObjectId(filters['from-id'])); // TODO: consider sorting
}
if (filters['to-page']) {
query.skip(Math.abs(filters['to-page'] + Number(filters['to-page'] < 0)) * filters['page-size'] + Number(filters['to-page'] < 0));
}
if (filters['to-page']) {
query.skip(Math.abs(filters['to-page'] + Number(filters['to-page'] < 0)) * filters['page-size']); // TODO: check order for negative numbers
}
query.sort(sort);
query.lean().exec((err, data) => {
if (err) return next(err);
if (filters['to-page'] && filters['to-page'] < 0) {
if (filters['to-page'] < 0) {
data.reverse();
}
res.json(_.compact(data.map(e => SampleValidate.output(e)))); // validate all and filter null values from validation errors