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ErickUser1
multi
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compartir.mjs
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#!/usr/bin/env node
import
{
spawn
}
from
"node:child_process"
;
import
{
existsSync
}
from
"node:fs"
;
import
{
join
,
dirname
}
from
"node:path"
;
import
{
fileURLToPath
}
from
"node:url"
;
/**
* Abre tu Multi al mundo por un túnel, para que un compa entre con un link.
*
* Qué hace, en orden: compila la Sala si hace falta, levanta el server (que la
* sirve en el MISMO puerto que la API — por eso basta un solo túnel), abre el
* túnel y te imprime el link.
*
* Lo que hay que decir en voz alta: mientras esto corre, tu máquina está
* expuesta a internet y cualquiera con el link entra a cualquier sala. Los ids
* son impredecibles, pero no hay más puerta que esa. Para una sesión con tus
* compas está bien; no lo dejes prendido.
*/
const
raiz
=
join
(
dirname
(
fileURLToPath
(
import
.
meta
.
url
)
)
,
".."
)
;
const
PUERTO
=
process
.
env
.
PORT
??
"4000"
;
const
NPM
=
process
.
platform
===
"win32"
?
"npm.cmd"
:
"npm"
;
function
run
(
cmd
,
args
,
opts
=
{
}
)
{
return
spawn
(
cmd
,
args
,
{
cwd
:
raiz
,
stdio
:
"inherit"
,
shell
:
process
.
platform
===
"win32"
,
...
opts
}
)
;
}
function
esperar
(
child
)
{
return
new
Promise
(
(
res
,
rej
)
=>
{
child
.
once
(
"exit"
,
(
code
)
=>
(
code
===
0
?
res
(
)
:
rej
(
new
Error
(
`salió con
${
code
}
`
)
)
)
)
;
child
.
once
(
"error"
,
rej
)
;
}
)
;
}
async
function
main
(
)
{
// 1. La Sala compilada: sin esto el server no tiene qué servir y el túnel
// llevaría a una API pelona.
if
(
!
existsSync
(
join
(
raiz
,
"web"
,
"dist"
,
"index.html"
)
)
)
{
console
.
log
(
"\n Compilando la Sala (solo la primera vez)…\n"
)
;
await
esperar
(
run
(
NPM
,
[
"run"
,
"build"
]
)
)
;
}
console
.
log
(
"\n Levantando Multi…\n"
)
;
const
server
=
run
(
NPM
,
[
"run"
,
"serve"
]
)
;
// 2. Esperar a que responda antes de abrir el túnel: si no, ngrok muestra
// un error de conexión y parece que todo falló.
//
// El tope es alto porque el primer arranque hace varias cosas lentas:
// construir la imagen de Docker, y en WSL sobre /mnt/c hasta cargar las
// dependencias tarda (Windows traduciendo miles de lecturas).
const
listo
=
await
esperarServer
(
`http://localhost:
${
PUERTO
}
/health`
,
600_000
)
;
if
(
!
listo
)
{
console
.
error
(
"\n El server no respondió. Revisa los mensajes de arriba.\n"
)
;
server
.
kill
(
)
;
process
.
exit
(
1
)
;
}
console
.
log
(
"\n Abriendo el túnel…\n"
)
;
const
tunel
=
spawn
(
"ngrok"
,
[
"http"
,
PUERTO
,
"--log"
,
"stdout"
,
"--log-format"
,
"json"
]
,
{
cwd
:
raiz
,
stdio
:
[
"ignore"
,
"pipe"
,
"pipe"
]
,
}
)
;
let
anunciado
=
false
;
tunel
.
stdout
.
on
(
"data"
,
(
d
)
=>
{
for
(
const
linea
of
String
(
d
)
.
split
(
"\n"
)
)
{
if
(
!
linea
.
trim
(
)
)
continue
;
let
ev
;
try
{
ev
=
JSON
.
parse
(
linea
)
;
}
catch
{
continue
;
}
if
(
ev
.
url
&&
!
anunciado
)
{
anunciado
=
true
;
anunciar
(
ev
.
url
)
;
}
// ngrok reporta sus errores por el mismo canal.
if
(
ev
.
lvl
===
"eror"
||
ev
.
err
)
{
console
.
error
(
` [ngrok]
${
ev
.
err
??
ev
.
msg
??
linea
}
`
)
;
}
}
}
)
;
tunel
.
stderr
.
on
(
"data"
,
(
d
)
=>
process
.
stderr
.
write
(
` [ngrok]
${
d
}
`
)
)
;
tunel
.
once
(
"exit"
,
(
code
)
=>
{
if
(
!
anunciado
)
{
console
.
error
(
[
""
,
` ngrok no pudo abrir el túnel (salió con
${
code
}
).`
,
" Si es la primera vez, necesitas una cuenta gratis:"
,
" 1. Regístrate en https://dashboard.ngrok.com/signup"
,
" 2. Copia tu token y corre: ngrok config add-authtoken TU_TOKEN"
,
""
,
]
.
join
(
"\n"
)
,
)
;
}
server
.
kill
(
)
;
process
.
exit
(
code
??
1
)
;
}
)
;
const
cerrar
=
(
)
=>
{
console
.
log
(
"\n Cerrando…\n"
)
;
tunel
.
kill
(
)
;
server
.
kill
(
)
;
process
.
exit
(
0
)
;
}
;
process
.
on
(
"SIGINT"
,
cerrar
)
;
process
.
on
(
"SIGTERM"
,
cerrar
)
;
}
function
anunciar
(
url
)
{
console
.
log
(
[
""
,
" ─────────────────────────────────────────────────────"
,
""
,
` Tu Multi está en:
${
url
}
`
,
""
,
" Pásale ese link a tus compas y entran directo."
,
" Cada quien pone su propia API key al llegar."
,
""
,
" Mientras esto corra, tu máquina está abierta a"
,
" internet: cierra con Ctrl+C cuando terminen."
,
""
,
" ─────────────────────────────────────────────────────"
,
""
,
]
.
join
(
"\n"
)
,
)
;
}
/** Sondea /health hasta que conteste. El primer arranque tarda (deps, Docker). */
async
function
esperarServer
(
url
,
timeoutMs
)
{
const
limite
=
Date
.
now
(
)
+
timeoutMs
;
const
inicio
=
Date
.
now
(
)
;
let
aviso
=
0
;
while
(
Date
.
now
(
)
<
limite
)
{
// Avisar cada 30s: sin esto parece colgado y la gente lo mata.
const
seg
=
Math
.
floor
(
(
Date
.
now
(
)
-
inicio
)
/
1000
)
;
if
(
seg
>=
aviso
+
30
)
{
aviso
=
seg
;
console
.
log
(
` …esperando al server (
${
seg
}
s). El primer arranque tarda.`
)
;
}
try
{
const
r
=
await
fetch
(
url
,
{
signal
:
AbortSignal
.
timeout
(
3000
)
}
)
;
if
(
r
.
ok
)
return
true
;
}
catch
{
// todavía no levanta
}
await
new
Promise
(
(
r
)
=>
setTimeout
(
r
,
1500
)
)
;
}
return
false
;
}
main
(
)
.
catch
(
(
e
)
=>
{
console
.
error
(
"\n Falló:"
,
e
.
message
,
"\n"
)
;
process
.
exit
(
1
)
;
}
)
;
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