db-many querys & usage in segments

server/.vscode/launch.json

@@ -17,7 +17,8 @@
       //"outFiles": [ "/home/alex/Projects/hastic-server/server.js" ],
       "port": 9229,
       "restart": true,
-      "trace": true
+      "trace": true,
+      "timeout": 100000
     }
   ]
 }

server/src/models/analytic_unit_model.ts

@@ -61,22 +61,21 @@ export class AnalyticUnit {
     );
   }
 
-
 }
 
 
 export async function findById(id: AnalyticUnitId): Promise<AnalyticUnit> {
-  return AnalyticUnit.fromObject(db.findOne(id));
+  return AnalyticUnit.fromObject(await db.findOne(id));
 }
 
 /**
  * Creates and updates new unit.id
- * 
+ *
  * @param unit to create
  * @returns unit.id
  */
 export async function create(unit: AnalyticUnit): Promise<AnalyticUnitId> {
-  return unit.id = await db.insertOne(unit);
+  return unit.id = await db.insertOne(unit.toObject());
 }
 
 export async function remove(id: AnalyticUnitId): Promise<void> {

server/src/models/segment_model.ts

@@ -9,11 +9,15 @@ type SegmentId = string;
 
 export class Segment {
   constructor(
+    public auId: AnalyticUnitId,
     public from: number,
     public to: number,
     public labeled: boolean,
     public id?: SegmentId
   ) {
+    if(auId === undefined) {
+      throw new Error('AnalyticUnitId is undefined');
+    }
     if(from === undefined) {
       throw new Error('from is undefined');
     }
@@ -28,6 +32,7 @@ export class Segment {
   public toObject() {
     return {
       _id: this.id,
+      auId: this.auId,
       from: this.from,
       to: this.to,
       labeled: this.labeled
@@ -39,24 +44,34 @@ export class Segment {
       throw new Error('obj is undefined');
     }
     return new Segment(
-      obj.from, obj.to,
+      obj.auId, +obj.from, +obj.to,
       obj.labeled, obj.id || obj._id
     );
   }
 }
 
-
-export function getLabeledSegments(id: AnalyticUnitId) {
-  //return db.
+export type FindManyQuery = {
+  timeFromGTE?: number,
+  timeToLTE?: number,
+  intexGT?: number
 }
 
-export function getPredicted(id: AnalyticUnitId) {
-
+export async function findMany(id: AnalyticUnitId, query: FindManyQuery): Promise<Segment[]> {
+  var dbQuery: any = { auId: id };
+  if(query.timeFromGTE !== undefined) {
+    dbQuery.from = { $gte: query.timeFromGTE };
+  }
+  if(query.timeToLTE !== undefined) {
+    dbQuery.to = { $lte: query.timeToLTE };
+  }
+  let segs = await db.findMany(dbQuery);
+  return segs.map(Segment.fromObject);
 }
 
-export async function insertSegments(id: any, segments: Segment[]) {
+export async function insertSegments(id: AnalyticUnitId, segments: Segment[]) {
+  return db.insertMany(segments.map(s => s.toObject()));
 }
 
 export function removeSegments(idsToRemove: SegmentId[]) {
-  
+  return db.removeMany(idsToRemove);
 }

server/src/routes/analytic_units_router.ts

@@ -25,7 +25,7 @@ async function sendStatus(ctx: Router.IRouterContext) {
 
 }
 
-async function findItem(ctx: Router.IRouterContext) {
+async function getUnit(ctx: Router.IRouterContext) {
   try {
     let id = ctx.request.query.id;
 
@@ -49,7 +49,7 @@ async function findItem(ctx: Router.IRouterContext) {
   }
 }
 
-async function createItem(ctx: Router.IRouterContext) {
+async function createUnit(ctx: Router.IRouterContext) {
   try {
     let newId = await createAnalyticUnitFromObject(ctx.request.body);
     ctx.response.body = { id: newId };
@@ -62,14 +62,9 @@ async function createItem(ctx: Router.IRouterContext) {
   }
 }
 
-function deleteItem(ctx: Router.IRouterContext) {
+async function deleteUnit(ctx: Router.IRouterContext) {
   try {
-    let id = ctx.request.query.id;
-
-    if(id !== undefined) {
-      AnalyticUnit.remove(id);
-    }
-
+    await AnalyticUnit.remove(ctx.request.query.id);
     ctx.response.body = {
       code: 200,
       message: 'Success'
@@ -86,7 +81,7 @@ function deleteItem(ctx: Router.IRouterContext) {
 
 export var router = new Router();
 
+router.get('/', getUnit);
 router.get('/status', sendStatus);
-router.get('/', findItem);
-router.post('/', createItem);
-router.delete('/', deleteItem);
+router.post('/', createUnit);
+router.delete('/', deleteUnit);

server/src/routes/segments_router.ts

@@ -3,35 +3,21 @@ import * as Router from 'koa-router';
 import { AnalyticUnitId } from '../models/analytic_unit_model';
 
 import {
-  getLabeledSegments,
+  findMany,
   insertSegments,
   removeSegments,
 } from '../models/segment_model';
 import { runLearning } from '../controllers/analytics_controller';
 
 
-async function sendSegments(ctx: Router.IRouterContext) {
+async function getSegments(ctx: Router.IRouterContext) {
   let id: AnalyticUnitId = ctx.request.query.id;
 
-  let lastSegmentId = ctx.request.query.lastSegmentId;
-  let timeFrom = ctx.request.query.from;
-  let timeTo = ctx.request.query.to;
-
-  let segments = await getLabeledSegments(id);
-
-  // // Id filtering
-  // if(lastSegmentId !== undefined) {
-  //   segments = segments.filter(el => el.id > lastSegmentId);
-  // }
-
-  // // Time filtering
-  // if(timeFrom !== undefined) {
-  //   segments = segments.filter(el => el.finish > timeFrom);
-  // }
-
-  // if(timeTo !== undefined) {
-  //   segments = segments.filter(el => el.start < timeTo);
-  // }
+  let segments = await findMany(id, {
+    intexGT: ctx.request.query.lastSegmentId, 
+    timeFromGTE:  ctx.request.query.from, 
+    timeToLTE: ctx.request.query.to
+  });
 
   ctx.response.body = { segments }
 
@@ -56,5 +42,5 @@ async function updateSegments(ctx: Router.IRouterContext) {
 
 export const router = new Router();
 
-router.get('/', sendSegments);
+router.get('/', getSegments);
 router.patch('/', updateSegments);

server/src/services/data_service.ts

@@ -9,37 +9,48 @@ export enum Collection { ANALYTIC_UNITS, SEGMENTS };
 
 /**
  * Class which helps to make queries to your collection
- * 
+ *
  * @param { string | object } query: a key as a string or mongodb-style query
  */
 export type DBQ = {
+  findOne: (query: string | object) => any,
+  findMany: (query: string[] | object) => any[],
   insertOne: (document: object) => string,
   insertMany: (documents: object[]) => string[],
   updateOne: (query: string | object, updateQuery: any) => void,
-  findOne: (query: string | object) => any,
-  removeOne: (query: string | object) => number
+  removeOne: (query: string) => boolean
+  removeMany: (query: string[] | object) => number
 }
 
 export function makeDBQ(collection: Collection): DBQ {
   return {
-    insertOne: dbInsert.bind(null, collection),
-    insertMany: dbInsertMany.bind(null, collection),
-    updateOne: dbUpdate.bind(null, collection),
     findOne: dbFindOne.bind(null, collection),
-    removeOne: dbRemove.bind(null, collection)
+    findMany: dbFindMany.bind(null, collection),
+    insertOne: dbInsertOne.bind(null, collection),
+    insertMany: dbInsertMany.bind(null, collection),
+    updateOne: dbUpdateOne.bind(null, collection),
+    removeOne: dbRemoveOne.bind(null, collection),
+    removeMany: dbRemoveMany.bind(null, collection)
   }
 }
 
-function wrapIdToQuery(query: string | object) {
+function wrapIdToQuery(query: string | object): any {
   if(typeof query === 'string') {
     return { _id: query };
   }
   return query;
 }
 
+function wrapIdsToQuery(query: string[] | object): any {
+  if(Array.isArray(query)) {
+    return { _id: { $in: query } };
+  }
+  return query;
+}
+
 const db = new Map<Collection, nedb>();
 
-let dbInsert = (collection: Collection, doc: object) => {
+let dbInsertOne = (collection: Collection, doc: object) => {
   return new Promise<string>((resolve, reject) => {
     db[collection].insert(doc, (err, newDoc) => {
       if(err) {
@@ -63,7 +74,7 @@ let dbInsertMany = (collection: Collection, docs: object[]) => {
   });
 }
 
-let dbUpdate = (collection: Collection, query: string | object, updateQuery: object) => {
+let dbUpdateOne = (collection: Collection, query: string | object, updateQuery: object) => {
   query = wrapIdToQuery(query);
   return new Promise<void>((resolve, reject) => {
     db[collection].update(query, updateQuery, { /* options */ }, (err: Error) => {
@@ -89,8 +100,38 @@ let dbFindOne = (collection: Collection, query: string | object) => {
   });
 }
 
-let dbRemove = (collection: Collection, query: string | object) => {
-  query = wrapIdToQuery(query);
+let dbFindMany = (collection: Collection, query: string[] | object) => {
+  query = wrapIdsToQuery(query);
+  return new Promise<any[]>((resolve, reject) => {
+    db[collection].findOne(query, (err, docs) => {
+      if(err) {
+        reject(err);
+      } else {
+        resolve(docs);
+      }
+    });
+  });
+}
+
+let dbRemoveOne = (collection: Collection, id: string) => {
+  let query = { _id: id };
+  return new Promise<boolean>((resolve, reject) => {
+    db[collection].remove(query, (err, numRemoved) => {
+      if(err) {
+        reject(err);
+      } else {
+        if(numRemoved > 1) {
+          throw new Error(`Removed ${numRemoved} elements with id: ${id}. Only one is Ok.`);
+        } else {
+          resolve(numRemoved == 1);
+        }
+      }
+    });
+  });
+}
+
+let dbRemoveMany = (collection: Collection, query: string[] | object) => {
+  query = wrapIdsToQuery(query);
   return new Promise<number>((resolve, reject) => {
     db[collection].remove(query, (err, numRemoved) => {
       if(err) {
@@ -102,6 +143,7 @@ let dbRemove = (collection: Collection, query: string | object) => {
   });
 }
 
+
 function maybeCreateDir(path: string): void {
   if(fs.existsSync(path)) {
     return;