153 lines
7.5 KiB
JavaScript
Executable File
153 lines
7.5 KiB
JavaScript
Executable File
var { Client } = require('pg');
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var express = require("express");
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const path = require("path");
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var cors = require('cors')
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var app = express();
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const port = 3000;
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app.use(cors())
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const static_path = path.join(__dirname, "public"); // The path to a public folder.
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app.use(express.static(static_path));
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app.use(express.urlencoded({extended: true}));
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app.get('/', (req, res) => {
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res.sendFile('js/index.html', {root: __dirname });// When you enter the url localhost:3000/ you get the index.html file.
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});
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app.get('/getExersises', (req,res) =>{
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con = new Client({ // Establish a connection with the database called lts_ets_pro
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user: "",
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host: "",
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database: "lts_ets_pro",
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password: ""
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});
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con.connect(function(err){ // When the connection attempt was successful this will run
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if(err) throw err// If there had been an error connecting to the database it will throw the error
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con.query("select id, name, created from exm.exercise order by created",function(err,result,fields){
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if(err)
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throw err;
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var payload = [];
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for(var i = 0; i < result.rows.length;i++)
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{
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// This will just put the lat and lon variables in a point variable and then append the point to the payload
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var exersise = {exersise_id: result.rows[i].id, exersise_name: result.rows[i].name}
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payload.push(exersise);
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}
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res.send(payload)// Send the data to the client as a response
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})
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});
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});
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app.get('/getParticipants/p', (req,res)=> {
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con = new Client({ // Establish a connection with the database called lts_ets_pro
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user: "",
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host: "",
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database: "lts_ets_pro",
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password: ""
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});
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con.connect(function(err){ // When the connection attempt was successful this will run
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if(err) throw err// If there had been an error connecting to the database it will throw the error
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con.query("SELECT DISTINCT id, equipment_number, designator from ex_" + req.query.exersiseId + ".rec_participant where equipment_number IS NOT NULL order by equipment_number",function(err,result,fields){
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if(err)
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throw err;
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var payload = [];
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for(var i = 0; i < result.rows.length;i++)
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{
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// This will just put the lat and lon variables in a point variable and then append the point to the payload
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var participant = {id: result.rows[i].id,equipment_number: result.rows[i].equipment_number, designator: result.rows[i].designator}
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payload.push(participant);
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}
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res.send(payload)// Send the data to the client as a response
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})
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});
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});
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app.get("/getPositions/p", (req, res) => { // This will be run when you enter the URL localhost:3000/getData/p
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con = new Client({ // Establish a connection with the database called lts_ets_pro
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user: "",
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host: "",
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database: "lts_ets_pro",
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password: ""
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});
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con.connect(function(err){ // When the connection attempt was successful this will run
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if(err) throw err// If there had been an error connecting to the database it will throw the error
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con.query("select sample_time, pos_lon*180/3.14159265359 as pos_lon, pos_lat*180/3.14159265359 as pos_lat, pos_z from ex_" + req.query.exersiseId + ".rec_participant_position where participant_id = " + req.query.parId + " order by sample_time",function(err,result,fields){
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// Explenation:
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// ---select sample_time, pos_lon*180/3.14159265359 as pos_lon, pos_lat*180/3.14159265359 as pos_lat, pos_z
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// This will select what variables i want to get from the table.
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// ---from ex_201.rec_participant_position
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// This defines the table i want to get data from.
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// ---where participant_id = " + req.query.parId + "
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// I only want to take the data if it is from the participant with the participantId that has been passed from the get request
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// ---order by sample_time
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// This will just order the data by the sample_time
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if(err)
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throw err;
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var Payload = [];
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for(var i = 0; i < result.rows.length;i++)
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{
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// This will just put the lat and lon variables in a point variable and then append the point to the payload
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var position = [];
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position.push(result.rows[i].pos_lat);
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position.push(result.rows[i].pos_lon);
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var event = {event_type_id: -1,event_name: "Position", sample_time: result.rows[i].sample_time,position: position}
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Payload.push(event);
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}
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res.send(Payload)// Send the data to the client as a response
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})
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});
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})
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app.get("/getEvents/p", (req, res) => { // This will be run when you enter the URL localhost:3000/getEvents/p
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con = new Client({ // Establish a connection with the database called lts_ets_pro
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user: "",
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host: "",
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database: "lts_ets_pro",
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password: ""
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});
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con.connect(function(err){ // When the connection attempt was successful this will run.
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if(err) throw err; // If there had been an error connecting to the database it will throw the error
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con.query("select E.event_type_id, T.name, E.participant_id, E.sample_time, E.position_x*180/3.14159265359 as position_x, E.position_y*180/3.14159265359 as position_y from ex_" + req.query.exersiseId + ".eem_event E JOIN pdm.pdm_event_type T ON T.id = E.event_type_id where participant_id = " + req.query.parId + " and event_type_id IN (" + req.query.eventIds + ") order by sample_time",function(err,result,fields){
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// Explenation:
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// ---select T.name, E.participant_id, E.sample_time, E.position_x*180/3.14159265359 as position_x, E.position_y*180/3.14159265359 as position_y
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// This will select what variables i want to get from the table. The E and T will be different tables that will be defined in the next step.
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// ---from ex_201.eem_event E JOIN pdm.pdm_event_type T
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// This defines the tables i want to get data from.
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// ---ON T.id = E.event_type_id
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// This will look up the correct T.name by the event_type_id of the given event
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// ---where participant_id = " + req.query.parId + " and event_type_id IN (" + req.query.eventIds + ")
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// I only want to take the data if it is from the participant with the correct participantId and event_type_id that has been passed from the get request and
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// ---order by sample_time
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// This will just order the data by the sample_time
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if(err)
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throw err;
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var payload = [];
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for(var i = 0; i < result.rows.length;i++)
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{
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// This will just put the data in a event object
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var position = [];
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position.push(result.rows[i].position_y);
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position.push(result.rows[i].position_x);
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var event = {event_type_id: result.rows[i].event_type_id,event_name: result.rows[i].name, sample_time: result.rows[i].sample_time,position: position}
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payload.push(event);
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}
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res.send(payload) // Send the data to the client as a response
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})
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});
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})
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app.listen(port, () => {
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console.log(`Example app listening on port ${port}`)
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})
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