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Bot: add DM contact target alongside channel

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The bot can now reply to a specific DM contact instead of a channel.

UI (BotScreen): item 1 cycles through all channels followed by all DM
contacts (ADV_TYPE_CHAT). The label switches between "Channel" / "Contact"
and the value shows the channel or contact name. Left/right/enter navigate
the combined list.

Logic (MyMesh::onMessageRecv): when bot_target_type==1, match the trigger
against incoming DM text and reply via sendMessage(). A 4-byte pubkey
prefix identifies the target; all-zero prefix matches any DM sender.

Persistence: bot_target_type and bot_dm_pubkey[4] appended to prefs with
backward-compat read guard (old firmware defaults to channel mode).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Jakub
2026-05-13 21:09:47 +02:00
co-authored by Claude Sonnet 4.6
parent 9756bb062c
commit e638955898
4 changed files with 109 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files
examples/companion_radio/MyMesh.cpp
+29
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@@ -512,6 +512,33 @@ void MyMesh::onMessageRecv(const ContactInfo &from, mesh::Packet *pkt, uint32_t
const char *text) {
markConnectionActive(from); // in case this is from a server, and we have a connection
queueMessage(from, TXT_TYPE_PLAIN, pkt, sender_timestamp, NULL, 0, text);
// DM auto-reply bot
if (_prefs.bot_enabled && _prefs.bot_target_type == 1 &&
_prefs.bot_trigger[0] && _prefs.bot_reply[0] &&
millis() - _bot_last_reply_ms > 10000UL) {
// all-zero pubkey = any sender; otherwise match first 4 bytes
bool key_ok = (_prefs.bot_dm_pubkey[0] == 0 && _prefs.bot_dm_pubkey[1] == 0 &&
_prefs.bot_dm_pubkey[2] == 0 && _prefs.bot_dm_pubkey[3] == 0) ||
memcmp(from.id.pub_key, _prefs.bot_dm_pubkey, 4) == 0;
if (key_ok) {
const char* t = text;
const char* tr = _prefs.bot_trigger;
int tlen = strlen(tr);
bool matched = false;
for (; *t && !matched; t++) {
int i = 0;
while (i < tlen && tolower((uint8_t)t[i]) == tolower((uint8_t)tr[i])) i++;
if (i == tlen) matched = true;
}
if (matched) {
uint32_t ts = getRTCClock()->getCurrentTime();
uint32_t expected_ack, est_timeout;
if (sendMessage(from, ts, 0, _prefs.bot_reply, expected_ack, est_timeout) != MSG_SEND_FAILED)
_bot_last_reply_ms = millis();
}
}
}
}
void MyMesh::onCommandDataRecv(const ContactInfo &from, mesh::Packet *pkt, uint32_t sender_timestamp,
@@ -899,6 +926,8 @@ MyMesh::MyMesh(mesh::Radio &radio, mesh::RNG &rng, mesh::RTCClock &rtc, SimpleMe
_prefs.bot_channel_idx = 0;
_prefs.bot_trigger[0] = '\0';
_prefs.bot_reply[0] = '\0';
_prefs.bot_target_type = 0;
memset(_prefs.bot_dm_pubkey, 0, sizeof(_prefs.bot_dm_pubkey));
_prefs.auto_off_secs = 15; // 15 seconds auto-off by default
_prefs.tz_offset_hours = 0; // UTC by default
_prefs.low_batt_mv = 3400; // auto-shutdown at 3.4V by default