1 files changed, 102 insertions, 0 deletions
diff --git a/assets/mailsync.sh b/assets/mailsync.sh
new file mode 100755
index 0000000..ee918b6
--- /dev/null
+++ b/assets/mailsync.sh
@@ -0,0 +1,102 @@
+#!/bin/bash
+# mailsync.sh - fetch mail and reindex it.
+#
+# Copyright (C) 2026 Danilo M. <danix@danix.xyz>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Runs mbsync followed by notmuch new, under a lock so a cron timer and a
+# click in qtmaildir cannot run two mbsync processes over one Maildir.
+#
+# Two audiences, which is what shapes the output handling below: a cron or
+# systemd timer, which wants a log file it can read afterwards, and
+# qtmaildir, which runs this as a subprocess and shows what it prints.
+# Output therefore goes to BOTH, and the exit status is real.
+
+# Defensive: don't rely on cron/systemd/whatever invokes this to have
+# set these correctly. Explicit beats inferred, especially after the
+# HOME-not-set failure we hit once already. Fall back to the invoking
+# user's home from passwd rather than a hardcoded path.
+export HOME="${HOME:-$(getent passwd "$(id -u)" | cut -d: -f6)}"
+export GNUPGHOME="${GNUPGHOME:-$HOME/.gnupg}"
+
+LOCKFILE="/tmp/mbsync.lock"
+LOGFILE="$HOME/.local/state/mailsync.log"
+MAX_LOG_BYTES=$((10 * 1024 * 1024))  # rotate past 10MB, see note below
+
+mkdir -p "$(dirname "$LOGFILE")"
+
+exec 200>"$LOCKFILE"
+if ! flock -n 200; then
+    # Both streams again: a caller that skipped because the cron run holds
+    # the lock needs to be told, not left with silence and an error code.
+    msg="$(date -Iseconds) === SKIPPED: previous run still in progress ==="
+    echo "$msg" >> "$LOGFILE"
+    echo "$msg" >&2
+    exit 1
+fi
+
+# Simple rotation: if the log's gotten big, keep the last run's worth
+# and move the rest aside rather than letting it grow forever.
+if [ -f "$LOGFILE" ] && [ "$(stat -c%s "$LOGFILE" 2>/dev/null || echo 0)" -gt "$MAX_LOG_BYTES" ]; then
+    mv "$LOGFILE" "${LOGFILE}.1"
+fi
+
+# Statuses are written to files rather than shell variables because the
+# block below is piped into tee, which puts it in a subshell: a variable
+# assigned in there is gone by the time the parent reads it.
+STATUS_DIR="$(mktemp -d)"
+trap 'rm -rf "$STATUS_DIR"' EXIT
+
+START_TS="$(date -Iseconds)"
+{
+    echo "===== RUN START: $START_TS ====="
+
+    # Timestamp every line of mbsync/notmuch output as it streams,
+    # rather than only marking run boundaries, this is what actually
+    # lets you tell which errors are from which run at a glance.
+    mbsync -a 2>&1 | while IFS= read -r line; do
+        echo "$(date '+%H:%M:%S') $line"
+    done
+    echo "${PIPESTATUS[0]}" > "$STATUS_DIR/mbsync"
+
+    notmuch new 2>&1 | while IFS= read -r line; do
+        echo "$(date '+%H:%M:%S') $line"
+    done
+    echo "${PIPESTATUS[0]}" > "$STATUS_DIR/notmuch"
+
+    END_TS="$(date -Iseconds)"
+    MBSYNC_STATUS="$(cat "$STATUS_DIR/mbsync")"
+    NOTMUCH_STATUS="$(cat "$STATUS_DIR/notmuch")"
+    if [ "$MBSYNC_STATUS" -eq 0 ] && [ "$NOTMUCH_STATUS" -eq 0 ]; then
+        echo "===== RUN END: $END_TS  status=OK ====="
+    else
+        echo "===== RUN END: $END_TS  status=FAILED  mbsync=$MBSYNC_STATUS notmuch=$NOTMUCH_STATUS ====="
+    fi
+# tee, not a plain redirect. Appending only to the log left every caller
+# that runs this as a subprocess with nothing to show: qtmaildir's sync
+# pane was empty for exactly this reason. Cron still gets its log.
+} 2>&1 | tee -a "$LOGFILE"
+
+MBSYNC_STATUS="$(cat "$STATUS_DIR/mbsync" 2>/dev/null || echo 1)"
+NOTMUCH_STATUS="$(cat "$STATUS_DIR/notmuch" 2>/dev/null || echo 1)"
+
+# Report the real outcome. The old unconditional "exit 0" meant a caller
+# could not distinguish a clean sync from a failed one, so qtmaildir's
+# sync-on-exit prompt would report success over a sync that had not
+# happened, which is precisely the case that loses work.
+if [ "$MBSYNC_STATUS" -ne 0 ]; then
+    exit "$MBSYNC_STATUS"
+fi
+exit "$NOTMUCH_STATUS"