#!/usr/bin/env bash
# Inside The Machine · one-command install: Chat with your files
# A private chat that answers questions about your own PDFs, notes and documents.
# Page: https://insidethemachine.ai/do/docs   Agent doc: https://insidethemachine.ai/install/docs.md
# Run status: Partly checked: some paths were run, the rest only checked against docs. Install steps run on an Apple M4 Mac with 16 GB on 2026-10-15. File upload and the first Docling run are checked against the docs only.
# This script: The wrapper scripts are generated from the site data. Every .sh passed bash -n and shellcheck and ran in plan mode on Linux (Debian 13). Every .ps1 passed the PowerShell parser and chat.ps1 ran in plan, verify and rollback mode under PowerShell 7 on Linux with Windows calls mocked. Not run on macOS or real Windows.
#
# Read it first:  curl -fsSL https://insidethemachine.ai/install/docs.sh | less
#   curl -fsSL https://insidethemachine.ai/install/docs.sh | bash                        install, then check
#   curl -fsSL https://insidethemachine.ai/install/docs.sh | bash -s -- plan             print every step, run nothing
#   curl -fsSL https://insidethemachine.ai/install/docs.sh | bash -s -- verify           only the checks
#   curl -fsSL https://insidethemachine.ai/install/docs.sh | bash -s -- rollback --yes   undo it (without --yes it only prints)
# Options: ITM_RAM=32 (memory in GB instead of detecting it), ITM_MODEL=<ollama tag>
# Lines marked YOU RUN are left to you: servers that keep running, interactive apps, your own files.
# shellcheck disable=SC2016,SC1090
set -u
main() {
ACT="${ITM_ACTION:-install}"; YES="${ITM_YES:-}"
for a in "$@"; do case "$a" in --yes|-y) YES=1 ;; install|plan|verify|rollback) ACT="$a" ;; *) echo "unknown option: $a (use install, plan, verify or rollback)" >&2; exit 2 ;; esac; done
START="$(pwd)"; FAILS=0; NEXT=""
case "$(uname -s)" in Darwin) P=mac ;; Linux) P=linux ;; *) P=other ;; esac
say() { printf '\n== %s\n' "$1"; }
note() { printf '  # %s\n' "$1"; }
die() { printf '\nSTOP: %s\nHelp: %s\n' "$1" 'https://insidethemachine.ai/do/docs#fix' >&2; exit 1; }
run() { printf '  $ %s\n' "$1"; [ "$ACT" = plan ] && return 0; eval "$1" || die "this step failed: $1"; }
mac() { if [ "$P" != mac ]; then printf '  (macOS only, skipped: use your package manager) %s\n' "$1"; return 0; fi
  case "$1" in
    xcode-select*) printf '  $ %s\n' "$1"; [ "$ACT" = plan ] || xcode-select -p >/dev/null 2>&1 || die "install Apple's command line tools first: run xcode-select --install, finish the window, then run this again"; return 0 ;;
    brew*) [ "$ACT" = plan ] || command -v brew >/dev/null 2>&1 || die "needs Homebrew first: https://brew.sh" ;;
  esac
  run "$1"; }
you() { printf '  YOU RUN: %s\n' "$1"; [ -n "$2" ] && printf '           (%s)\n' "$2"; NEXT="$NEXT  $1\n"; }
undo() { if [ "${2:-}" = mac ] && [ "$P" != mac ]; then return 0; fi; printf '  $ %s\n' "$1"; if [ "$ACT" = rollback ] && [ -n "$YES" ]; then eval "$1" || echo "    (failed, carrying on)"; fi; }
check() { printf '  ? %s\n    expect: %s\n' "$1" "$2"; [ "$ACT" = plan ] && return 0; if out=$(eval "$1" 2>&1) && ! printf '%s' "$out" | grep -q '^{"error"'; then echo "    PASS"; else echo "    FAIL"; FAILS=$((FAILS + 1)); fi; [ -n "$out" ] && printf '%s\n' "$out" | head -n 3 | sed 's/^/    | /'; return 0; }
need_ollama() { [ "$ACT" = plan ] && return 0; ollama list >/dev/null 2>&1 && return 0; echo "  starting 'ollama serve' in the background (log: /tmp/itm-ollama.log)"; nohup ollama serve >/tmp/itm-ollama.log 2>&1 & i=0; while [ $i -lt 30 ]; do sleep 1; ollama list >/dev/null 2>&1 && return 0; i=$((i + 1)); done; die "Ollama is not running. Open the Ollama app, then run this again."; }
[ "$P" = other ] && die "this script is for macOS and Linux. On Windows: irm https://insidethemachine.ai/install/docs.ps1 | iex"
mem_gb() {
  if [ -n "${ITM_RAM:-}" ]; then echo "$ITM_RAM"; return; fi
  if [ "$P" = mac ]; then echo $(( $(sysctl -n hw.memsize) / 1073741824 )); return; fi
  if command -v nvidia-smi >/dev/null 2>&1; then v=$(nvidia-smi --query-gpu=memory.total --format=csv,noheader,nounits 2>/dev/null | head -n 1 | tr -dc 0-9); [ -n "$v" ] && { echo $(( v / 1024 )); return; }; fi
  awk '/^MemTotal:/{printf "%d\n", $2/1048576 + 0.5}' /proc/meminfo
}
RAM="$(mem_gb)"
# a size counts if the machine has at least 94% of it (Linux reports a bit less than the label)
fits() { [ $((RAM * 100)) -ge $(($1 * 94)) ]; }
MODEL="${ITM_MODEL:-}"
if [ -z "$MODEL" ]; then for t in 8:qwen3.5:4b 16:gemma4:12b 24:gemma4:12b 32:qwen3.8:27b 48:qwen3.8:27b 64:qwen3.8:27b 96:qwen3.8:27b 128:qwen3.8:27b 192:qwen3.8-flash-next:125b-a6b 256:qwen3.8-flash-next:125b-a6b 512:qwen3.8-flash-next:125b-a6b; do fits "${t%%:*}" && MODEL="${t#*:}"; done; fi
[ -n "$MODEL" ] || die "no model in our list fits ${RAM} GB. See https://insidethemachine.ai/models"
install_any() {
  say '1. Install Ollama'
  run 'curl -fsSL https://ollama.com/install.sh | sh'
  say '2. Download your model'
  need_ollama
  run 'ollama pull $MODEL'
  say '3. Add a ChatGPT-style window'
  mac 'brew install python@3.11'
  run 'python3.11 -m venv ~/.venvs/openwebui && source ~/.venvs/openwebui/bin/activate'
  run 'pip install open-webui'
  you 'open-webui serve' 'starts a server that keeps running; run it in its own window'
  say '4. Add your files'
  note 'In a chat, click + and attach a file, then ask about it. For a whole folder, go to Workspace → Knowledge, make a collection and upload your files. Then type # in a chat to use it.'
  say '5. Messy PDF? Clean it first'
  run 'python3 -m venv ~/.venvs/docling && source ~/.venvs/docling/bin/activate'
  run 'pip install docling'
  you 'docling yourfile.pdf' 'needs your own file, folder or model name'
}
verify_any() {
  say 'Check'
  check 'ollama --version' 'a version number'
  check 'ollama list | grep -F "${MODEL%%:*}"' 'your model is in the list'
  check 'test -x ~/.venvs/openwebui/bin/open-webui' 'Open WebUI is installed'
  check 'test -x ~/.venvs/docling/bin/docling' 'Docling is installed'
}
rollback_any() {
  say 'Rollback'
  undo 'ollama rm $MODEL'
  undo 'rm -rf ~/.venvs/openwebui ~/.venvs/docling'
  undo 'rm -rf ~/Library/Caches/pip'
}
act() { return 0; }
inwd() { return 0; }
V=any
printf 'Inside The Machine · Chat with your files · %s · %s%s\n' "$ACT" "$P" " · ${RAM} GB · model $MODEL"
case "$ACT" in
  install|plan) "install_$V"; cd "$START" || exit 1; act; inwd; "verify_$V"; cd "$START" || exit 1; [ "$ACT" = plan ] && "rollback_$V" ;;
  verify) act; inwd; "verify_$V" ;;
  rollback) [ -n "$YES" ] || note 'print only: add --yes to run these'; act; "rollback_$V" ;;
esac
if [ -n "$NEXT" ]; then say 'Now you run these (in order)'; printf '%b' "$NEXT"; fi
[ "$ACT" = install ] && printf '\nDone. %s check(s) failed. Next steps and fixes: %s\n' "$FAILS" 'https://insidethemachine.ai/do/docs'
[ "$FAILS" -eq 0 ]
}
main "$@"