#!/bin/bash
# ==============================================================================================
# ================================== Uptime Report =============================================
# ==============================================================================================
#
# PURPOSE
# ─────────────────────────────────────────────────────────────────────────────
# The weekly read of what Tools/uptime_probe.sh has been recording every minute: anything down
# right now, and anything that was not perfect over the last seven days. Runs in the Sunday
# Morning Coffee Report.
#
# Silent on a clean week. A report that always says something is a report nobody reads, so this
# prints nothing and notifies nothing when every domain was 100%.
#
# ==============================================================================================
# OPERATIONAL MODEL
# ==============================================================================================
#
# uptime_probe.php --report exits 1 when it has something to say and 0 when it does not, so the
# decision to notify is the exit code rather than this script parsing the text it just printed.
#
# ==============================================================================================
# DESIGN PRINCIPLES
# ==============================================================================================
#
# Silence is the normal output.
#   A report that always says something is a report nobody reads. A perfect week prints nothing
#   and notifies nothing, so anything that does appear in the Sunday report is worth the glance.
#
# The exit code is the decision, not the text.
#   uptime_probe.php --report exits 1 when it has something to say and 0 when it does not. This
#   script never parses the output it just printed to work out whether to notify — a report whose
#   wording changed would otherwise silently stop notifying.
#
# It reads; it never probes.
#   The measurements are already taken, once a minute, by Tools/uptime_probe.sh. Re-probing at
#   report time would describe Sunday morning rather than the week being reported on.
#
# ==============================================================================================
# OPERATIONAL SAFEGUARDS
# ==============================================================================================
#
# Read-only. Reads the stored history and prints; records nothing, and cannot alter the data it
# is reporting on.
#
# UPTIME_PROBE_ENABLED gates the whole run — with the probe off there is no history worth
# reporting, and this says nothing rather than reporting an empty week as a perfect one.
#
# ==============================================================================================
# RUNTIME MODES
# ==============================================================================================
#
# uptime_report.sh    the weekly read. Silent when every domain was 100%.
#
# Called from COFFEE_REPORT_SCRIPTS; takes no arguments and has no other mode. For live figures
# or a per-domain table, use Tools/uptime_probe.sh --status.
#
# ==============================================================================================
# CONFIGURATION
# ==============================================================================================
#
# UPTIME_PROBE_ENABLED   nothing here runs when the probe is switched off
#
# ==============================================================================================

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
source "$SCRIPT_DIR/../load_config.sh"

acquire_lock
detect_hosts

if [[ "${UPTIME_PROBE_ENABLED:-true}" == "false" ]]; then
    log "$ICON_GEAR Uptime probe disabled — nothing to report"
    exit 0
fi

REPORT="$(php "$SCRIPT_DIR/../Plugin/unraid/Tools/uptime_probe.php" --report 2>/dev/null)"
RC=$?

if [[ $RC -eq 0 || -z "$REPORT" ]]; then
    echo "$ICON_DONE All monitored domains at 100% this week ✅"
    exit 0
fi

echo "$REPORT"

DOWN_COUNT=$(grep -c "DOWN" <<< "$REPORT" || true)
if [[ "$DOWN_COUNT" -gt 0 ]]; then
    notify "$DOWN_COUNT domain(s) currently unreachable on $(hostname)" "Uptime" "warning"
else
    notify "Some domains had downtime this week on $(hostname)" "Uptime" "normal"
fi
exit 0