120 lines
3.8 KiB
Nim
120 lines
3.8 KiB
Nim
# SPDX-FileCopyrightText: ☭ 2021 Emery Hemingway
|
|
# SPDX-License-Identifier: Unlicense
|
|
|
|
import std/[asyncdispatch, json, osproc, sets, tables]
|
|
import preserves, preserves/parse
|
|
import syndicate, syndicate/[actors, capabilities, dataspaces, patterns, relay]
|
|
|
|
from std/os import getCurrentProcessId, commandLineParams, extractFilename, paramStr, sleep
|
|
|
|
proc mint(): SturdyRef =
|
|
var key: array[16, byte]
|
|
mint(key, "syndicate")
|
|
|
|
type
|
|
VideoEnqueue* {.preservesRecord: "playvideo".} = object
|
|
uri*: string
|
|
|
|
VideoEnqueued* {.preservesRecord: "video-enqueued".} = object
|
|
uri*: string
|
|
id*: int
|
|
|
|
import std/net
|
|
from std/nativesockets import AF_UNIX, SOCK_DGRAM, Protocol
|
|
|
|
type MpvProcess = ref object
|
|
process: Process
|
|
socket: Socket # TODO AsyncSocket
|
|
|
|
proc newMpvProcess(): MpvProcess =
|
|
let socketPath = "/tmp/mpvsocket-" & $getCurrentProcessId()
|
|
result = MpvProcess(process: startProcess("mpv",
|
|
args = ["--idle", "--input-ipc-server=" & socketPath],
|
|
options = {poUsePath, poParentStreams}))
|
|
sleep 500
|
|
result.socket = newSocket(
|
|
domain = AF_UNIX,
|
|
sockType = SOCK_STREAM,
|
|
protocol = cast[Protocol](0),
|
|
buffered = false)
|
|
connectUnix(result.socket, socketPath)
|
|
|
|
proc recv(mpv: MpvProcess): JsonNode =
|
|
mpv.socket.recvLine.parseJson
|
|
|
|
proc send(mpv: MpvProcess; command: varargs[string, `$`]): JsonNode =
|
|
let js = %* {"command": command}
|
|
mpv.socket.send($js & "\n")
|
|
while true: # TODO: dispatch responses asynchronously
|
|
let resp = mpv.recv
|
|
if resp.kind == JObject and resp.contains "error":
|
|
let errmsg = getStr resp["error"]
|
|
if errmsg != "success":
|
|
raise newException(CatchableError, errmsg)
|
|
result = resp["data"]
|
|
break
|
|
|
|
proc playlist(mpv: MpvProcess): JsonNode =
|
|
result = mpv.send("get_property", "playlist")
|
|
|
|
proc enqueue(mpv: MpvProcess; uri: string): int =
|
|
let resp = mpv.send("loadfile", uri, "append-play")
|
|
getInt resp["playlist_entry_id"]
|
|
|
|
proc frontend() =
|
|
proc getUriParams(): seq[string] =
|
|
result = commandLineParams()
|
|
if result.len == 0:
|
|
result.add execProcess"wl-paste"
|
|
# take the clipboard if nothing on the command line
|
|
|
|
waitFor runActor("chat") do (turn: var Turn):
|
|
|
|
let cap = mint()
|
|
|
|
connectUnix(turn, "/run/syndicate/ds", cap) do (turn: var Turn; a: Assertion) -> TurnAction:
|
|
let
|
|
ds = unembed a
|
|
uriToAssertions = newTable[string, Handle]()
|
|
|
|
# TODO: assert a dependency on a video playback service
|
|
|
|
for uri in getUriParams():
|
|
uriToAssertions[uri] = publish(turn, ds, VideoEnqueue(uri: uri))
|
|
|
|
onPublish(turn, ds, VideoEnqueued ? { 0: `?*`(), 1: `?*`() }) do (uri: string; id: int):
|
|
# querying when a video is enqueued implies that it should be enqueued?
|
|
echo uri, " enqueued with id ", id
|
|
var handle: Handle
|
|
if pop(uriToAssertions, uri, handle):
|
|
retract(turn, handle)
|
|
if uriToAssertions.len == 0:
|
|
stopActor(turn)
|
|
|
|
proc backend() =
|
|
waitFor runActor("chat") do (turn: var Turn):
|
|
|
|
let cap = mint()
|
|
|
|
connectUnix(turn, "/run/syndicate/ds", cap) do (turn: var Turn; a: Assertion) -> TurnAction:
|
|
let
|
|
ds = unembed a
|
|
mpv = newMpvProcess()
|
|
playlistAssertions = newTable[int, Handle]()
|
|
|
|
onPublish(turn, ds, VideoEnqueue ? { 0: `?*`() }) do (uri: string):
|
|
let id = mpv.enqueue(uri)
|
|
playlistAssertions[id] = publish(turn, ds, VideoEnqueued(uri: uri, id: id))
|
|
block:
|
|
# retract assertions not corresponding to the playlist
|
|
# TODO: do this from asyncronous mpv IPC events
|
|
var idSet: HashSet[int]
|
|
for e in mpv.playlist:
|
|
idSet.incl getInt(e["id"])
|
|
for (id, handle) in playlistAssertions.pairs:
|
|
if id notin idSet: retract(turn, handle)
|
|
|
|
case extractFilename(paramStr 0)
|
|
of "mpv_syndicate": backend()
|
|
else: frontend()
|