#!/usr/bin/env bash
set -euo pipefail
export LC_ALL=C

boot_raw="$(sysctl -n kern.boottime)"
boot_epoch="$(printf '%s\n' "$boot_raw" | sed -E 's/^\{ sec = ([0-9]+),.*/\1/')"
if [[ ! "$boot_epoch" =~ ^[0-9]+$ ]]; then
  echo "BLOCKER darwin_boot_epoch_unavailable"
  exit 65
fi

now_epoch="$(date +%s)"
uptime_seconds=$((now_epoch - boot_epoch))
if (( uptime_seconds < 0 )); then
  echo "BLOCKER darwin_uptime_invalid"
  exit 65
fi

uid="$(id -u)"
launch_label="com.momo.ollama111-allow-proxy"
if launchctl print "gui/${uid}/${launch_label}" >/dev/null 2>&1; then
  startup_enabled="enabled"
else
  startup_enabled="unknown"
fi

if curl --max-time 2 -fsS http://127.0.0.1:11434/api/tags >/dev/null 2>&1; then
  startup_active="active"
else
  startup_active="inactive"
fi

logical_cores="$(sysctl -n hw.logicalcpu 2>/dev/null || true)"
load1="$(sysctl -n vm.loadavg 2>/dev/null | awk '{ print $2; exit }')"
mem_available_percent="$(memory_pressure -Q 2>/dev/null | awk -F': ' '
  /System-wide memory free percentage/ {
    value = $2
    gsub(/%/, "", value)
    print value
    exit
  }
')"
process_cpu_sum="$(ps -A -o %cpu= 2>/dev/null | awk '{ sum += $1 } END { printf "%.2f", sum + 0 }')"
cpu_host_percent="$(awk -v total="$process_cpu_sum" -v cores="$logical_cores" 'BEGIN {
  if (cores <= 0) { exit 1 }
  value = total / cores
  if (value > 100) { value = 100 }
  printf "%.2f", value
}')"
swap_total_mib="$(sysctl vm.swapusage 2>/dev/null | awk '{
  for (i = 1; i <= NF; i += 1) {
    if ($i == "total") {
      value = $(i + 2)
      gsub(/M/, "", value)
      print value
      exit
    }
  }
}')"
swap_used_mib="$(sysctl vm.swapusage 2>/dev/null | awk '{
  for (i = 1; i <= NF; i += 1) {
    if ($i == "used") {
      value = $(i + 2)
      gsub(/M/, "", value)
      print value
      exit
    }
  }
}')"
swap_used_percent="$(awk -v used="$swap_used_mib" -v total="$swap_total_mib" 'BEGIN {
  if (total <= 0) { printf "0.00"; exit }
  printf "%.2f", (used / total) * 100
}')"
disk_used_percent="$(df -Pk / 2>/dev/null | awk '
  NR == 2 {
    value = $5
    gsub(/%/, "", value)
    print value
    exit
  }
')"

if [[ ! "$logical_cores" =~ ^[0-9]+$ ]] || (( logical_cores < 1 )) ||
   [[ ! "$load1" =~ ^[0-9]+([.][0-9]+)?$ ]] ||
   [[ ! "$mem_available_percent" =~ ^[0-9]+([.][0-9]+)?$ ]] ||
   [[ ! "$cpu_host_percent" =~ ^[0-9]+([.][0-9]+)?$ ]] ||
   [[ ! "$swap_used_percent" =~ ^[0-9]+([.][0-9]+)?$ ]] ||
   [[ ! "$disk_used_percent" =~ ^[0-9]+([.][0-9]+)?$ ]]; then
  echo "BLOCKER darwin_perf_readback_unavailable"
  exit 65
fi

printf 'boot_id=darwin_%s uptime_seconds=%s systemd_state=darwin_ssh startup_enabled=%s startup_active=%s\n' \
  "$boot_epoch" "$uptime_seconds" "$startup_enabled" "$startup_active"
printf 'perf_schema=agent99_perf_readback_v1 os=darwin cores=%s load1=%s mem_available_percent=%s disk_used_percent=%s\n' \
  "$logical_cores" "$load1" "$mem_available_percent" "$disk_used_percent"
printf 'darwin_pressure_schema=agent99_darwin_pressure_v1 cpu_host_percent=%s swap_used_percent=%s\n' \
  "$cpu_host_percent" "$swap_used_percent"

ps -Ao pid=,ppid=,%cpu=,%mem=,rss=,comm= -r 2>/dev/null | awk '
  NR <= 8 {
    pid = $1
    ppid = $2
    cpu = $3
    memory = $4
    rss = $5
    name = ""
    for (i = 6; i <= NF; i += 1) {
      name = name (name == "" ? "" : " ") $i
    }
    count = split(name, path, "/")
    name = path[count]
    gsub(/[^A-Za-z0-9._-]/, "_", name)
    if (name == "") { name = "unknown" }
    printf "darwin_process_sample_v1 pid=%s ppid=%s cpu_percent=%s memory_percent=%s rss_kib=%s name=%s\n", \
      pid, ppid, cpu, memory, rss, name
  }
'