feat: announce delay alerts as soon as they appear

station_broadcast.lua

@@ -2,7 +2,7 @@
 -- ============================================================================
 -- 1. Configuration & Constants
 -- ============================================================================
-local APP_VERSION_TEXT = "v1.0.37"
+local APP_VERSION_TEXT = "v1.0.38"
 
 local CONFIG = {
     CLOUD_URL = "ws://stabadmin.fse-media.group",
@@ -2308,6 +2308,7 @@ end
 -- ============================================================================
 local Main = {}
 State.announcedApproaching = {}
+State.announcedAlerts = {}
 State.pendingApproaching = {}
 
 local function parseEtaText(etaStr)
@@ -2471,6 +2472,11 @@ function Main.loop()
                         State.announcedApproaching[k] = nil
                     end
                 end
+                for k, v in pairs(State.announcedAlerts) do
+                    if now - v > 300000 then
+                        State.announcedAlerts[k] = nil
+                    end
+                end
                 
                 for i, stop in ipairs(data.TrainStops) do
                     local st = stop.Station
@@ -2523,6 +2529,27 @@ function Main.loop()
                             cancelled = cancelled,
                             reason = reason
                         })
+
+                        local alertKey = announceKey .. "::delay=" .. tostring(delayMinutes) .. "::reason=" .. tostring(reason or "") .. "::cancel=" .. tostring(cancelled)
+                        if cancelled or delayMinutes > 0 then
+                            if not State.announcedAlerts[alertKey] then
+                                State.announcedAlerts[alertKey] = now
+                                Utils.log("INFO", string.format("Train Alert: %s (ETA: %ds, Delay: %dm, Cancelled: %s, Reason: %s)", trainName, etaSeconds, delayMinutes, tostring(cancelled), tostring(reason or "")))
+                                Network.send({
+                                    type = "train_approaching",
+                                    stationName = State.stationName,
+                                    stationCode = State.stationCode,
+                                    stationPlatform = platform,
+                                    trainId = trainName,
+                                    destination = destination,
+                                    eta = tostring(etaSeconds) .. "s",
+                                    etaSeconds = etaSeconds,
+                                    delay = delayMinutes,
+                                    cancelled = cancelled,
+                                    reason = reason
+                                })
+                            end
+                        end
                         
                         if etaSeconds >= 0 and etaSeconds < 30 then
                             if not State.announcedApproaching[announceKey] then
@@ -2557,6 +2584,11 @@ function Main.loop()
                     State.announcedApproaching[k] = nil
                 end
             end
+            for k, v in pairs(State.announcedAlerts) do
+                if now - v > 300000 then
+                    State.announcedAlerts[k] = nil
+                end
+            end
 
             for _, lineText in pairs(lines) do
                 if lineText and lineText ~= "" and lineText:match("[%w%?%[]") then
@@ -2611,6 +2643,25 @@ function Main.loop()
                             reason = nil
                         })
 
+                        local alertKey = announceKey .. "::delay=" .. tostring(delay)
+                        if delay > 0 then
+                            if not State.announcedAlerts[alertKey] then
+                                State.announcedAlerts[alertKey] = now
+                                Utils.log("INFO", string.format("Train Delay Alert: %s (ETA: %ds, Delay: %dm)", tName, etaSeconds, delay))
+                                Network.send({
+                                    type = "train_approaching",
+                                    stationName = State.stationName,
+                                    stationCode = State.stationCode,
+                                    stationPlatform = platform or State.stationPlatform or "1",
+                                    trainId = tName,
+                                    destination = dest,
+                                    eta = etaStr,
+                                    etaSeconds = etaSeconds,
+                                    delay = delay
+                                })
+                            end
+                        end
+
                         -- 触发逻辑：当 ETA 已经明确小于30秒（包括15秒、现在等），且之前没有播报过
                         if etaSeconds >= 0 and etaSeconds < 30 then
                             if not State.announcedApproaching[announceKey] then