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wot-server.js
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wot-server.js
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let ppt = require('./ppt-obj.js');
let slideshow = ppt.slideshow;
// example-server.js
Servient = require("@node-wot/core").Servient;
HttpServer = require("@node-wot/binding-http").HttpServer;
Helpers = require("@node-wot/core").Helpers;
var theThing;
// create Servient add HTTP binding with port configuration
let servient = new Servient();
function getThing() {
return theThing;
}
function updateState2(thing) {
return slideshow.stat()
.then((response) => {
status = response;
return status;
});
}
function wotThing() {
servient.addServer(new HttpServer({
port: 8081 // (default 8080)
}));
return servient.start().then((WoT) => {
WoT.produce({
"@context": "https://www.w3.org/2019/wot/td/v1",
title: "WOT",
properties: {
status: {
type: "object"
}
},
actions: {
next: {
icon: 'fa-step-forward',
btn: 'success'
},
prev: {
icon: 'fa-step-backward',
btn: 'primary'
},
start: {
icon: 'fa-play'
},
first: {
icon: 'fa-fast-backward'
},
last: {
icon: 'fa-fast-forward'
},
stop: {
icon: 'fa-stop'
}
}
}).then((thing) => {
thing.expose().then(() => {
console.info(thing.getThingDescription().title + " ready");
theThing = thing;
function updateState() {
return updateState2(thing)
}
function actionHandler(action, start, arg) {
return new Promise((resolve, reject) => {
var p = slideshow.boot()
if (start) {
p = p.then(() => slideshow.start())
}
p.then(function () {
//slideshow.first()
slideshow[action](arg)
}).then(updateState).then((response) => resolve(response));
}
)
}
thing.setPropertyReadHandler(
"status",
(value) => {
return new Promise((resolve, reject) => {
var status;
slideshow.boot()
.then(() => {
status = slideshow.stat()
.then((response) => {
status = response;
thing.writeProperty("status", status)
resolve(response)
})
})
})
});
thing.setActionHandler("first", (siren) => {
return actionHandler("first")
});
thing.setActionHandler("last", (siren) => {
return actionHandler("last");
});
thing.setActionHandler("next", (siren) => {
return actionHandler("next", true)
});
thing.setActionHandler("prev", (siren) => {
return actionHandler("prev", true)
});
thing.setActionHandler("stop", (siren) => {
return actionHandler("stop")
});
thing.setActionHandler("start", (siren) => {
return actionHandler("start")
});
});
})
});
}
module.exports = {
start: wotThing,
thing: getThing,
servient: servient
};