From 8a2a8747b6672ffe3ff72671c9273c935d152eab Mon Sep 17 00:00:00 2001
From: Trygve Laugstøl <trygvis@inamo.no>
Date: Sun, 27 May 2018 23:31:29 +0200
Subject: wip

---
 main/main.cpp | 45 +++++++++++++++++++++++++++++++++++++--------
 1 file changed, 37 insertions(+), 8 deletions(-)

diff --git a/main/main.cpp b/main/main.cpp
index 9f864cb..7858a77 100644
--- a/main/main.cpp
+++ b/main/main.cpp
@@ -293,7 +293,7 @@ void wifi_event_handler_cb(System_Event_t *event)
         }
         wifi_station_connect();
     } else {
-        os_printf("Unknown event\n");
+        os_printf("unhandled event=%d\n", event->event_id);
     }
 }
 
@@ -318,16 +318,23 @@ static MQTTClient mqtt_client;
 static Network mqtt_network;
 unsigned char mqtt_tx_buf[80], mqtt_rx_buf[80];
 
-static int mqtt_connect(struct config &config) {
+static int mqtt_connect() {
     int ret;
     MQTTPacket_connectData cd = MQTTPacket_connectData_initializer;
+    cd.keepAliveInterval = 15;
+    cd.willFlag = 1;
+    cd.will.retained = 1;
+    cd.will.topicName = MQTTString_initializer;
+    cd.will.topicName.cstring = (char *)"esp/esp-245398/online";
+    cd.will.message = MQTTString_initializer;
+    cd.will.message.cstring = (char *)"0";
 
     NetworkInit(&mqtt_network);
 
     unsigned int command_timeout_ms = 30000;
     MQTTClientInit(&mqtt_client, &mqtt_network, command_timeout_ms, mqtt_tx_buf, sizeof(mqtt_tx_buf), mqtt_rx_buf, sizeof(mqtt_rx_buf));
 
-    if ((ret = NetworkConnect(&mqtt_network, config.mqtt_host, config.mqtt_port)) != 0) {
+    if ((ret = NetworkConnect(&mqtt_network, main_config.mqtt_host, main_config.mqtt_port)) != 0) {
         printf("%s: NetworkConnect:%d\n", __FUNCTION__, ret);
         goto fail;
     }
@@ -341,7 +348,7 @@ static int mqtt_connect(struct config &config) {
     }
 #endif
 
-    cd.MQTTVersion = 3;
+    cd.MQTTVersion = 4;
     cd.clientID.cstring = main_config.mqtt_client_id;
 
     if ((ret = MQTTConnect(&mqtt_client, &cd)) != 0) {
@@ -356,12 +363,29 @@ fail:
     return ret;
 }
 
-static int mqtt_disconnect(struct config &config) {
+static int mqtt_disconnect() {
     printf("%s\n", __FUNCTION__);
 
+    // TODO: start timer to reconnect to mqtt
+
     return 0;
 }
 
+static int mqtt_publish(const char *topic, const char *value) {
+    uint32_t chip_id = system_get_chip_id();
+    char buf[100];
+    snprintf(buf, sizeof(buf), "esp/esp-%02x%02x%02x/%s", (chip_id >> 16) & 0xff, (chip_id >> 8) & 0xff, chip_id & 0xff, topic);
+
+    printf("=> %s: %s\n", buf, value);
+
+    MQTTMessage m;
+    bzero(&m, sizeof(m));
+    m.qos = QOS0;
+    m.payloadlen = strlen(value);
+    m.payload = (void *)value;
+    return MQTTPublish(&mqtt_client, buf, &m);
+}
+
 static void set_station_mode(struct config &config) {
     printf("STATION_MODE\n");
     if (wifi_get_opmode_default() != NULL_MODE) {
@@ -394,11 +418,16 @@ void main_task(void* ctx) {
             struct ip_info info;
             wifi_get_ip_info(STATION_IF, &info);
             printf("ip=" IPSTR ", nm=" IPSTR ", gw=" IPSTR "\n", IP2STR(&info.ip), IP2STR(&info.netmask), IP2STR(&info.gw));
-            mqtt_connect(main_config);
+            if (mqtt_connect()) {
+                printf("mqtt_connect failed\n");
+                mqtt_disconnect();
+            } else {
+                int ret = mqtt_publish("online", "1");
+                printf("%s: mqtt_publish:%d\n", __FUNCTION__, ret);
+            }
         }
         if (notification_value & EVENTS_LOST_IP) {
-            mqtt_disconnect(main_config);
-            // TODO: start timer to reconnect to mqtt
+            mqtt_disconnect();
         }
 
         if (timeout) {
-- 
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