#!/usr/bin/env bash
# ⚠️ VERALTET — nur FW 1.0. Switch ist auf FW 2.2.1 geflasht; die dispatcher.cgi-cmd-Codes
#    unten gelten dort NICHT mehr. Konfig jetzt via Telnet-CLI: switch/cli/ (run-cli.exp + .cli).
#    Bleibt nur als Historie / für den (unwahrscheinlichen) FW-1.0-Rollback.
# ALL-SG8316M (Realtek dispatcher.cgi) driver — curl-based, no MCP needed.
# Read ops are safe. WRITE ops change config; SAVE persists to flash.
# Creds via ./.secrets (gitignored): SW_HOST, SW_USER, SW_PASS.
set -euo pipefail

HERE="$(cd "$(dirname "$0")" && pwd)"
[ -f "$HERE/.secrets" ] && . "$HERE/.secrets"
HOST="${SW_HOST:-10.40.41.239}"
BASE="http://$HOST/cgi-bin/dispatcher.cgi"
CURL=(curl -sS --max-time 12)

# --- read ---
get() { "${CURL[@]}" "$BASE?cmd=$1"; }

# Curated config-view + AJAX-data cmd codes (see sg8316m-cgi-map.md)
SCRAPE_CMDS="512 517 519 1297 541 543 768 779 1024 1026 1031 \
1282 1283 1289 1291 1293 534 537 539 524 \
4096 4098 4100 2560 2562 2564 2572 2574 2816 2818 2821 3840 3842 3844"

scrape() {
  local out="$HERE/${1:-state-PRE}"; mkdir -p "$out"
  echo "Scraping $HOST -> $out"
  for c in $SCRAPE_CMDS; do
    if "${CURL[@]}" "$BASE?cmd=$c" >"$out/cmd-$c.html" 2>/dev/null; then
      printf '  cmd=%-5s %6s bytes\n' "$c" "$(wc -c <"$out/cmd-$c.html" | tr -d ' ')"
    else
      printf '  cmd=%-5s FAILED\n' "$c"
    fi
  done
}

# Pretty-print one page as text
view() { get "$1" | sed -e 's/<[^>]*>/ /g' | tr -s ' \t\r\n' ' ' | sed 's/&nbsp;/ /g'; echo; }

# --- write (use deliberately, then `save`) ---
post() { "${CURL[@]}" -X POST "$BASE" "$@"; }

add_vlans()  { post --data-urlencode "vlanlist=$1" --data "vlanAction=0" --data-urlencode "name=${2:-}" --data "cmd=1284"; }
del_vlans()  { post --data-urlencode "vlanlist=$1" --data "vlanAction=1" --data "cmd=1284"; }
# set_ip <ip> [netmask] [gateway] — RECOVERY: re-point mgmt IP (e.g. after flash reset to 192.168.1.1)
set_ip()     { post --data "mode=0" --data "ip=$1" --data "netmask=${2:-255.255.255.0}" --data "gateway=${3:-10.40.41.254}" --data "cmd=518"; }
save_flash() { echo ">> SAVE to FLASH (cmd=4358)"; get 4358 >/dev/null; }

usage() { cat <<USAGE
usage: $0 <cmd>
  scrape [dir]      dump config pages to switch/<dir> (default state-PRE)  [READ]
  get <N>           raw HTML of cmd=N                                       [READ]
  view <N>          cmd=N as plain text                                     [READ]
  add-vlans <list> [prefix]   e.g. add-vlans 10,20,30,40,100                [WRITE]
  del-vlans <list>                                                          [WRITE]
  set-ip <ip> [mask] [gw]     RECOVERY: re-point mgmt IP                    [WRITE]
  save              persist running config to flash                         [WRITE]

Recovery after flash (switch reset to 192.168.1.1):
  SW_HOST=192.168.1.1 SW_USER=admin SW_PASS=admin $0 set-ip 10.40.41.239
USAGE
}

case "${1:-}" in
  scrape) scrape "${2:-state-PRE}" ;;
  get)    get "$2" ;;
  view)   view "$2" ;;
  add-vlans) add_vlans "$2" "${3:-}" ;;
  del-vlans) del_vlans "$2" ;;
  set-ip) set_ip "$2" "${3:-255.255.255.0}" "${4:-10.40.41.254}" ;;
  save)   save_flash ;;
  *) usage ;;
esac