Files
community-plugins/hassio/service_sse.luau
T

565 lines
15 KiB
Luau

--!nonstrict
local haUrlRaw = noctalia.getConfig("ha_url")
local haToken = noctalia.getConfig("ha_token")
local MANAGED_ENTITIES_FILE = "managed_entities.json"
local function getCleanUrl()
if type(haUrlRaw) ~= "string" then return "" end
return (haUrlRaw:gsub("/$", ""))
end
local function getCleanToken()
if type(haToken) ~= "string" then return "" end
return noctalia.string.trim(haToken)
end
local function isConfigured()
return getCleanUrl() ~= "" and getCleanToken() ~= ""
end
local function loadManagedEntities()
local dataDir, dirErr = noctalia.pluginDataDir()
if not dataDir then
noctalia.log("Cannot resolve plugin data dir: " .. (dirErr or "unknown"))
return {}
end
local data = noctalia.readFile(dataDir .. "/" .. MANAGED_ENTITIES_FILE)
if data and data ~= "" then
local parsed = noctalia.json.decode(data)
if type(parsed) == "table" then return parsed end
end
return {}
end
local entities = {}
local managedSet = {}
local function setEntities(list)
entities = list
managedSet = {}
for _, id in ipairs(entities) do
managedSet[id] = true
end
end
setEntities(loadManagedEntities())
local status = "unconfigured"
local entityStates = {}
local sseActive = false
local streamHandle = nil
local MAX_RECONNECT_RETRIES = 10
local CONNECTED_POLL_INTERVAL_MS = 1000
local RECONNECT_POLL_INTERVAL_MS = 1000
local BACKOFF_POLL_INTERVAL_MS = 60000
-- The host allows 30s transfer + 10s connect, so past 35s the callback is gone.
local REQUEST_TIMEOUT_SECONDS = 35
-- The host allows 8 async callbacks per runtime.
local MAX_SNAPSHOT_REQUESTS_IN_FLIGHT = 4
local ENTITY_FLUSH_INTERVAL_SECONDS = 0.2
local retryCount = 0
local maxRetriesNotified = false
local authFailureNotified = false
local backoff = false
local connectionRequestInFlight = false
local requestStartedAt = nil
local entitiesDirty = false
local lastEntityFlush = 0
local snapshotToken = 0
local snapshotActive = false
local snapshotStartedAt = 0
local snapshotQueue = {}
local snapshotPending = {}
local snapshotInFlight = 0
local function syncUpdateInterval()
if status == "connected" and sseActive then
noctalia.setUpdateInterval(CONNECTED_POLL_INTERVAL_MS)
elseif backoff then
noctalia.setUpdateInterval(BACKOFF_POLL_INTERVAL_MS)
else
noctalia.setUpdateInterval(RECONNECT_POLL_INTERVAL_MS)
end
end
local function setStatus(next, reason)
if status == next then return end
status = next
noctalia.state.set("connection_status", status)
noctalia.log("connection status -> " .. status .. (reason and (" (" .. reason .. ")") or ""))
if status == "connected" then
authFailureNotified = false
elseif status == "auth_failed" and not authFailureNotified then
authFailureNotified = true
noctalia.notifyError(noctalia.tr("notifications.auth_failed"))
end
syncUpdateInterval()
end
local function haRequest(endpoint, method, body, callback)
if not isConfigured() then return false end
local url = getCleanUrl() .. endpoint
local cleanToken = getCleanToken()
local jsonBody
if body then
jsonBody = noctalia.json.encode(body)
end
local headers = {
"Authorization: Bearer " .. cleanToken,
}
if jsonBody then
table.insert(headers, "Content-Type: application/json")
end
return noctalia.http({
url = url,
method = method,
body = jsonBody,
headers = headers,
}, function(response: HttpResponse)
if not response then
callback({ ok = false, status = 0, body = "No response" })
return
end
callback({
ok = response.status >= 200 and response.status < 300,
status = response.status,
body = response.body
})
end)
end
local function supportsColorMode(modes, targets)
if type(modes) ~= "table" then return false end
for _, mode in ipairs(modes) do
for _, target in ipairs(targets) do
if mode == target then return true end
end
end
return false
end
local function processEntity(state)
if not state then return nil end
local attrs = state.attributes or {}
local modes = attrs.supported_color_modes or {}
-- stored as mireds for the panel slider
local colorTemp = -1
if attrs.color_temp_kelvin and attrs.color_temp_kelvin > 0 then
colorTemp = math.floor(1000000 / attrs.color_temp_kelvin + 0.5)
elseif attrs.color_temp and attrs.color_temp > 0 then
colorTemp = attrs.color_temp
end
local currentColor = ""
if type(attrs.rgb_color) == "table" and #attrs.rgb_color == 3 then
currentColor = attrs.rgb_color[1] .. "," .. attrs.rgb_color[2] .. "," .. attrs.rgb_color[3]
end
return {
entity_id = state.entity_id,
state = state.state,
friendly_name = attrs.friendly_name or state.entity_id,
domain = state.entity_id:match("^([^.]+)"),
unit = attrs.unit_of_measurement or "",
brightness = attrs.brightness or -1,
color_temp = colorTemp,
hue = (type(attrs.hs_color) == "table") and (attrs.hs_color[1] or 0) or 0,
current_color = currentColor,
supports_brightness = supportsColorMode(modes, {"brightness","color_temp","hs","xy","rgb","rgbw","rgbww"}),
supports_color_temp = supportsColorMode(modes, {"color_temp"}),
supports_rgb = supportsColorMode(modes, {"hs","xy","rgb","rgbw","rgbww"}),
}
end
local function publishEntities()
local count = 0
for _ in pairs(entityStates) do
count = count + 1
end
noctalia.state.set("entities", entityStates)
noctalia.state.set("entity_count", count)
entitiesDirty = false
lastEntityFlush = os.clock()
end
-- Every publish is re-decoded by every watcher, so bursts get coalesced.
local function markEntitiesDirty()
entitiesDirty = true
if (os.clock() - lastEntityFlush) >= ENTITY_FLUSH_INTERVAL_SECONDS then
publishEntities()
end
end
local function isManaged(entityId)
return managedSet[entityId] == true
end
local function updateEntity(entityId, newState)
if not isManaged(entityId) then return end
local processed = processEntity(newState)
if not processed then return end
entityStates[entityId] = processed
if snapshotActive then
-- don't let the in-flight round overwrite fresher live data
snapshotPending[entityId] = processed
end
markEntitiesDirty()
end
local currentEvent = {
data = "",
event = "",
}
local function eventTypeOf(parsed)
if currentEvent.event and currentEvent.event ~= "" then
return currentEvent.event
end
return parsed.event_type
end
local function tryDispatch()
if not currentEvent.data then return end
local parsed = noctalia.json.decode(currentEvent.data)
if not parsed then return end
if eventTypeOf(parsed) ~= "state_changed" then return end
local inner = parsed.data or {}
if inner.entity_id and inner.new_state then
updateEntity(inner.entity_id, inner.new_state)
end
end
local function processSSELine(line)
if line == "" then
tryDispatch()
currentEvent = {}
elseif line:match("^event:") then
if currentEvent.data then tryDispatch() end
currentEvent = { event = line:match("^event:%s*(.+)") or "" }
elseif line:match("^data:") then
local data = line:match("^data:%s*(.+)") or ""
local parsed = noctalia.json.decode(data)
if parsed then
if eventTypeOf(parsed) == "state_changed" then
local inner = parsed.data or {}
if inner.entity_id and inner.new_state then
updateEntity(inner.entity_id, inner.new_state)
currentEvent = {}
return
end
end
end
if currentEvent.data and currentEvent.data ~= "" then
currentEvent.data = currentEvent.data .. "\n" .. data
else
currentEvent.data = data
end
end
end
local pumpSnapshot
local finishSnapshot
local fetchSnapshot
local startSSEStream
local connect
function finishSnapshot()
snapshotActive = false
snapshotToken = snapshotToken + 1
local merged = {}
for _, id in ipairs(entities) do
merged[id] = snapshotPending[id] or entityStates[id]
end
entityStates = merged
snapshotPending = {}
snapshotQueue = {}
publishEntities()
end
function pumpSnapshot()
if not snapshotActive then return end
local token = snapshotToken
while snapshotInFlight < MAX_SNAPSHOT_REQUESTS_IN_FLIGHT and #snapshotQueue > 0 do
local entityId = snapshotQueue[1]
snapshotInFlight = snapshotInFlight + 1
local launched = haRequest("/api/states/" .. entityId, "GET", nil, function(res)
if token ~= snapshotToken then return end
snapshotInFlight = snapshotInFlight - 1
if res.status == 404 then
noctalia.log("Entity not found in Home Assistant: " .. entityId)
elseif res.ok and res.body and res.body ~= "" then
local state = noctalia.json.decode(res.body)
if type(state) == "table" and state.entity_id then
snapshotPending[entityId] = processEntity(state)
end
end
pumpSnapshot()
if snapshotActive and snapshotInFlight == 0 and #snapshotQueue == 0 then
finishSnapshot()
end
end)
if not launched then
snapshotInFlight = snapshotInFlight - 1
return
end
table.remove(snapshotQueue, 1)
end
if snapshotInFlight == 0 and #snapshotQueue == 0 then
finishSnapshot()
end
end
function fetchSnapshot()
snapshotToken = snapshotToken + 1
snapshotActive = true
snapshotStartedAt = os.clock()
snapshotInFlight = 0
snapshotPending = {}
snapshotQueue = {}
for _, id in ipairs(entities) do
if type(id) == "string" and id ~= "" then
table.insert(snapshotQueue, id)
end
end
pumpSnapshot()
end
function connect()
if not isConfigured() or connectionRequestInFlight then return end
requestStartedAt = os.clock()
connectionRequestInFlight = true
local launched = haRequest("/api/", "GET", nil, function(res)
connectionRequestInFlight = false
requestStartedAt = nil
if res.status == 0 then
noctalia.log("Cannot reach Home Assistant (connection failed)")
setStatus("unreachable", "transport failure")
return
end
if res.status == 401 or res.status == 403 then
setStatus("auth_failed", "http " .. tostring(res.status))
return
end
if not res.ok then
noctalia.log("Home Assistant API probe failed: status " .. tostring(res.status))
setStatus("disconnected", "http " .. tostring(res.status))
return
end
retryCount = 0
maxRetriesNotified = false
backoff = false
setStatus("connected", "api reachable")
if not startSSEStream() then
setStatus("disconnected", "stream failed to start")
return
end
fetchSnapshot()
syncUpdateInterval()
end)
if not launched then
connectionRequestInFlight = false
requestStartedAt = nil
setStatus("unreachable", "request not launched")
end
end
function startSSEStream()
if sseActive then return true end
local cleanToken = getCleanToken()
if cleanToken == "" then
return false
end
local url = getCleanUrl() .. "/api/stream?restrict=state_changed"
noctalia.log("Starting SSE stream")
currentEvent = { data = "", event = "" }
local handle
handle = noctalia.httpStream({
url = url,
headers = {
"Accept: text/event-stream",
"Authorization: Bearer " .. cleanToken,
},
}, function(line)
processSSELine(line)
end, function(result)
if streamHandle ~= handle then return end
streamHandle = nil
sseActive = false
currentEvent = {}
if result and (result.status == 401 or result.status == 403) then
setStatus("auth_failed", "stream http " .. tostring(result.status))
return
end
-- 404 here means this HA serves no /api/stream, which otherwise looks like a flaky link.
noctalia.log("SSE stream closed (status " .. tostring(result and result.status or 0) .. ")")
setStatus("disconnected", "stream closed")
syncUpdateInterval()
end)
if not handle then
noctalia.log("Failed to start SSE stream")
return false
end
streamHandle = handle
sseActive = true
syncUpdateInterval()
return true
end
noctalia.state.watch("command", function(cmd)
if cmd == "refresh" then
-- Do NOT clear sseActive: that bypasses startSSEStream()'s duplicate guard.
if status == "connected" then
if not sseActive then startSSEStream() end
fetchSnapshot()
else
connect()
end
elseif cmd == "reload_entities" then
local override = noctalia.state.get("entities_override")
if type(override) == "table" then
setEntities(override)
else
setEntities(loadManagedEntities())
end
-- Filtering is client-side, so only the snapshot needs refetching.
if status == "connected" then
fetchSnapshot()
else
connect()
end
end
end)
noctalia.state.watch("panel_open_signal", function(value)
if value then
retryCount = 0
maxRetriesNotified = false
backoff = false
syncUpdateInterval()
end
end)
function update()
if not isConfigured() then
setStatus("unconfigured", "no url or token")
if streamHandle then
streamHandle.stop()
streamHandle = nil
end
sseActive = false
syncUpdateInterval()
return
end
if entitiesDirty and (os.clock() - lastEntityFlush) >= ENTITY_FLUSH_INTERVAL_SECONDS then
publishEntities()
end
if snapshotActive then
if (os.clock() - snapshotStartedAt) > REQUEST_TIMEOUT_SECONDS then
noctalia.log("Entity snapshot timed out; publishing what arrived")
finishSnapshot()
else
pumpSnapshot()
end
end
if connectionRequestInFlight and (os.clock() - (requestStartedAt or 0)) > REQUEST_TIMEOUT_SECONDS then
connectionRequestInFlight = false
requestStartedAt = nil
setStatus("disconnected", "request timed out")
end
if status == "connected" and not sseActive then
setStatus("disconnected", "stream missing")
end
-- Reconverge the store in case a publish was dropped mid-callback.
if noctalia.state.get("connection_status") ~= status then
noctalia.state.set("connection_status", status)
end
if status ~= "connected" and not connectionRequestInFlight then
retryCount = retryCount + 1
if retryCount >= MAX_RECONNECT_RETRIES and not backoff then
backoff = true
if not maxRetriesNotified then
maxRetriesNotified = true
if not authFailureNotified then
noctalia.notifyError(noctalia.tr("notifications.reconnect_failed", { count = MAX_RECONNECT_RETRIES }))
end
end
end
setStatus("connecting", "attempt " .. tostring(retryCount))
connect()
end
syncUpdateInterval()
end
function onExit()
if streamHandle then
streamHandle.stop()
streamHandle = nil
end
sseActive = false
snapshotActive = false
end
noctalia.state.set("connection_status", status)
noctalia.state.set("entity_count", 0)
noctalia.state.set("entities", {})
if isConfigured() then
setStatus("connecting", "startup")
connect()
end
syncUpdateInterval()