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enervent-ctrl
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Serve everything from the binary instead of Nginx. Missing TLS, but that may not be a requirement at all

This commit is contained in:
Jarno Rankinen 2023-02-01 21:52:55 +02:00
parent 7eb75541d3
commit 81a7e5cb22
6 changed files with 95 additions and 1 deletions
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7
enervent-ctrl-go/main.go
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@ -21,7 +21,12 @@ func coils(w http.ResponseWriter, r *http.Request) {
func listen() {
log.Println("Starting pingvinAPI...")
http.HandleFunc("/api/v1/coils/", coils)
log.Fatal(http.ListenAndServe(":8888", nil))
static := http.FileServer(http.Dir("./static/html"))
http.Handle("/", static)
err := http.ListenAndServe(":8888", nil)
if err != nil {
log.Fatal(err)
}
}
func main() {

1
enervent-ctrl-go/static/html/coils/index.html Symbolic link
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@ -0,0 +1 @@
../index.html

17
enervent-ctrl-go/static/html/css/tabledata.css Normal file
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@ -0,0 +1,17 @@
.addr {
text-align: center;
}
.val {
text-align: center;
}
#data {
padding: 2pt;
border-collapse: collapse;
}
thead {
border-bottom: 1px solid;
text-align: left;
}
td {
padding: 2pt;
}

16
enervent-ctrl-go/static/html/index.html Normal file
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@ -0,0 +1,16 @@
<!DOCTYPE html>
<html lang="en">
<head>
<link rel="stylesheet" href="/css/tabledata.css">
<script src="/js/tabledata.js"></script>
<meta charset="UTF-8">
<title id="title">Enervent Pingvin Kotilämpö</title>
</head>
<body onload="getData()">
<table id="data">
<caption>Coil values at <span id="time"></span></caption>
<thead><th>Address</th><th>Value</th><th>Symbol</th><th>Description</th></thead>
<tbody id="datatable"></tbody>
</table>
</body>
</html>

54
enervent-ctrl-go/static/html/js/tabledata.js Normal file
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@ -0,0 +1,54 @@
function zeroPad(number) {
return ("0" + number).slice(-2)
}
function getData() {
now = new Date()
Y = now.getFullYear()
m = now.getMonth()
d = now.getDate()
H = zeroPad(now.getHours())
M = zeroPad(now.getMinutes())
S = zeroPad(now.getSeconds())
document.getElementById('time').innerHTML = `${Y}-${m}-${d} ${H}:${M}:${S}`
error = false
// The same index.html is used for both coil and register data,
// change api url based on which we're looking at
if (document.location.pathname == "/coils/") {
url = "/api/v1/coils"
document.getElementById("title").innerHTML = "Coils | Enervent Pingvin Kotilämpö"
}
else if (document.location.pathname == "/registers/") {
url = "/api/v1/registers"
document.getElementById("title").innerHTML = "Registers | Enervent Pingvin Kotilämpö"
}
else {
document.getElementById("data").innerHTML = 'Page not found'
error = true
}
if (!error) {
// Fetch data from API
fetch(url)
.then((response) => {
if (!response.ok) {
throw new Error(`Error fetching data: ${response.status}`)
}
return response.json()
})
.then((data) => {
// Populate table
document.getElementById('datatable').innerHTML = "";
for (n=0; n<data.length; n++) {
tablerow = `<tr><td class="addr" id="addr_${data[n].address}">${data[n].address}</td>\
<td class ="val" id="value_${data[n].address}">${Number(data[n].value)}</td>\
<td class="symbol" id="symbol_${data[n].address}">${data[n].symbol}</td>\
<td class="desc" id="description_${data[n].address}">${data[n].description}</td></tr>`
document.getElementById('datatable').innerHTML += tablerow
}
});
}
// Using setTimeout instead of setInterval to avoid possible connection issues
// There's no need to update exactly every 5 seconds, the skew is fine
setTimeout(getData, 1*1000);
}

1
enervent-ctrl-go/static/html/registers/index.html Symbolic link
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@ -0,0 +1 @@
../index.html