Add a function to auto lookup our timezone using our public ip

autoset the time based on local timezone
ratgdo · Oct 28, 2024 · 2488343 · 2488343
1 parent 6e6aee8
commit 2488343
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Showing 3 changed files with 47 additions and 3 deletions.
diff --git a/src/ratgdo.cpp b/src/ratgdo.cpp
@@ -256,6 +256,8 @@ void service_timer_loop()
     unsigned long current_millis = millis();
 
 #ifdef NTP_CLIENT
+    if (current_millis % 10000 == 0)
+        update_timezone();
     if (enableNTP && clockSet && lastRebootAt == 0)
     {
         lastRebootAt = time(NULL) - (current_millis / 1000);

diff --git a/src/utilities.cpp b/src/utilities.cpp
@@ -6,6 +6,7 @@
 #include "LittleFS.h"
 #include "comms.h"
 #include <ESP8266WiFi.h>
+#include <ESP8266HTTPClient.h>
 
 #ifdef LEGACY_SETTINGS_MIGRATION
 // Filenames for legacy user configuation, replaced by single file.
@@ -51,6 +52,49 @@ bool enableNTP = false;
 unsigned long lastRebootAt = 0;
 int32_t savedDoorUpdateAt = 0;
 
+int get_tz()
+{
+    WiFiClient client;
+    HTTPClient http;
+
+    if (http.begin(client, "http://ip-api.com/csv/?fields=timezone,offset"))
+    { // HTTP
+
+        // start connection and send HTTP header
+        int httpCode = http.GET();
+
+        // httpCode will be negative on error
+        if (httpCode > 0)
+        {
+            if (httpCode == HTTP_CODE_OK || httpCode == HTTP_CODE_MOVED_PERMANENTLY)
+            {
+                String payload = http.getString();
+                char * timezone = (char*)payload.c_str();
+                char * ch = strchr(timezone, ',');
+                *ch = '\0';
+                ch++;
+                int offset = atoi(ch);
+                offset /= -3600;
+                sprintf(userConfig->timeZone, "%s;UTC%d", timezone, offset);
+                RINFO("Setting timezone to %s", userConfig->timeZone);
+                return offset;
+            }
+        }
+        http.end();
+    }
+    return 0;
+}
+
+void update_timezone()
+{
+    if (clockSet)
+        return;
+    get_tz();
+    char *tz = strchr(userConfig->timeZone, ';');
+    // semicolon may separate continent/city from posix TZ string
+    configTime((tz) ? tz + 1 : userConfig->timeZone, NTP_SERVER);
+}
+
 void time_is_set(bool from_sntp)
 {
     RINFO("Clock set from NTP server: %d", from_sntp ? 1 : 0);
@@ -239,9 +283,6 @@ void load_all_config_settings()
     if (enableNTP)
     {
         settimeofday_cb(time_is_set);
-        char *tz = strchr(userConfig->timeZone, ';');
-        // semicolon may separate continent/city from posix TZ string
-        configTime((tz) ? tz + 1 : userConfig->timeZone, NTP_SERVER);
     }
 #endif
     syslogEn = userConfig->syslogEn;

diff --git a/src/utilities.h b/src/utilities.h
@@ -117,5 +117,6 @@ bool read_config_from_file();
 void write_config_to_file();
 
 void delete_file(const char *filename);
+void update_timezone();
 
 #endif