Signed-off-by: 吴文峰 <kevin@lmve.net>

2026-03-06 16:14:00 +08:00
parent 47d5814325
commit 1ad2934389
1451 changed files with 242614 additions and 0 deletions
@@ -0,0 +1,103 @@
+#include "TimeFormatters.h"
+#include "configuration.h"
+#include "gps/RTC.h"
+#include "mesh/NodeDB.h"
+#include <cstring>
+
+bool deltaToTimestamp(uint32_t secondsAgo, uint8_t *hours, uint8_t *minutes, int32_t *daysAgo)
+{
+    // Cache the result - avoid frequent recalculation
+    static uint8_t hoursCached = 0, minutesCached = 0;
+    static uint32_t daysAgoCached = 0;
+    static uint32_t secondsAgoCached = 0;
+    static bool validCached = false;
+
+    // Abort: if timezone not set
+    if (strlen(config.device.tzdef) == 0) {
+        validCached = false;
+        return validCached;
+    }
+
+    // Abort: if invalid pointers passed
+    if (hours == nullptr || minutes == nullptr || daysAgo == nullptr) {
+        validCached = false;
+        return validCached;
+    }
+
+    // Abort: if time seems invalid.. (> 6 months ago, probably seen before RTC set)
+    if (secondsAgo > SEC_PER_DAY * 30UL * 6) {
+        validCached = false;
+        return validCached;
+    }
+
+    // If repeated request, don't bother recalculating
+    if (secondsAgo - secondsAgoCached < 60 && secondsAgoCached != 0) {
+        if (validCached) {
+            *hours = hoursCached;
+            *minutes = minutesCached;
+            *daysAgo = daysAgoCached;
+        }
+        return validCached;
+    }
+
+    // Get local time
+    uint32_t secondsRTC = getValidTime(RTCQuality::RTCQualityDevice, true); // Get local time
+
+    // Abort: if RTC not set
+    if (!secondsRTC) {
+        validCached = false;
+        return validCached;
+    }
+
+    // Get absolute time when last seen
+    uint32_t secondsSeenAt = secondsRTC - secondsAgo;
+
+    // Calculate daysAgo
+    *daysAgo = (secondsRTC / SEC_PER_DAY) - (secondsSeenAt / SEC_PER_DAY); // How many "midnights" have passed
+
+    // Get seconds since midnight
+    uint32_t hms = (secondsRTC - secondsAgo) % SEC_PER_DAY;
+    hms = (hms + SEC_PER_DAY) % SEC_PER_DAY;
+
+    // Tear apart hms into hours and minutes
+    *hours = hms / SEC_PER_HOUR;
+    *minutes = (hms % SEC_PER_HOUR) / SEC_PER_MIN;
+
+    // Cache the result
+    daysAgoCached = *daysAgo;
+    hoursCached = *hours;
+    minutesCached = *minutes;
+    secondsAgoCached = secondsAgo;
+
+    validCached = true;
+    return validCached;
+}
+
+void getTimeAgoStr(uint32_t agoSecs, char *timeStr, uint8_t maxLength)
+{
+    // Use an absolute timestamp in some cases.
+    // Particularly useful with E-Ink displays. Static UI, fewer refreshes.
+    uint8_t timestampHours, timestampMinutes;
+    int32_t daysAgo;
+    bool useTimestamp = deltaToTimestamp(agoSecs, &timestampHours, &timestampMinutes, &daysAgo);
+
+    if (agoSecs < 120) // last 2 mins?
+        snprintf(timeStr, maxLength, "%u seconds ago", agoSecs);
+    // -- if suitable for timestamp --
+    else if (useTimestamp && agoSecs < 15 * SECONDS_IN_MINUTE) // Last 15 minutes
+        snprintf(timeStr, maxLength, "%u minutes ago", agoSecs / SECONDS_IN_MINUTE);
+    else if (useTimestamp && daysAgo == 0) // Today
+        snprintf(timeStr, maxLength, "Last seen: %02u:%02u", (unsigned int)timestampHours, (unsigned int)timestampMinutes);
+    else if (useTimestamp && daysAgo == 1) // Yesterday
+        snprintf(timeStr, maxLength, "Seen yesterday");
+    else if (useTimestamp && daysAgo > 1) // Last six months (capped by deltaToTimestamp method)
+        snprintf(timeStr, maxLength, "%li days ago", (long)daysAgo);
+    // -- if using time delta instead --
+    else if (agoSecs < 120 * 60) // last 2 hrs
+        snprintf(timeStr, maxLength, "%u minutes ago", agoSecs / 60);
+    // Only show hours ago if it's been less than 6 months. Otherwise, we may have bad data.
+    else if ((agoSecs / 60 / 60) < (730 * 6))
+        snprintf(timeStr, maxLength, "%u hours ago", agoSecs / 60 / 60);
+    else
+        snprintf(timeStr, maxLength, "unknown age");
+}