#!/bin/sh
# Served from https://mono.bolte.sh. Build embeds immutable payload metadata.
set -eu
mono_release='7a29def18428cd0cf8d3'
mono_sha256='7a29def18428cd0cf8d3d0687a245c9f9072c9eabd18ee91c7c61ed6c31684d2'
mono_base='https://mono.bolte.sh'
mono_runtime_consent=0
mono_no_input=0
mono_dry_run=0
mono_target_home=${HOME:-}
mono_home_next=0
for mono_argument in "$@"; do
    if [ "$mono_home_next" = 1 ]; then
        mono_target_home=$mono_argument
        mono_home_next=0
    fi
    case "$mono_argument" in
        --home) mono_home_next=1 ;;
        --home=*) mono_target_home=${mono_argument#--home=} ;;
        --bootstrap-python) mono_runtime_consent=1 ;;
        --no-input|--json) mono_no_input=1 ;;
        --dry-run|-n) mono_dry_run=1 ;;
        --help|-h)
            cat <<'HELP'
Mono — a familiar environment for each machine.

  curl -fsSL https://mono.bolte.sh | bash

  curl -fsSL https://mono.bolte.sh -o /tmp/mono-install.sh
  sh /tmp/mono-install.sh --features shell --dry-run
  sh /tmp/mono-install.sh --features shell,git,vim,tmux --backup-conflicts --yes

Choose individual features; start with shell and add only what you need.
Compose with --features shell,git; customize with --with / --without FEATURE.
Features: shell, git, vim, tmux, terminal, dev, mono, wiki, codex, packages.

  --features FEATURES    Exact selection; repeat or comma-separate (none clears)
  --feature FEATURE      Alias for --features
  --dry-run              Preview files and configuration; make no home changes
  --yes --no-input       Apply without prompts
  --backup-conflicts     Preserve existing files before replacing them
  --migrate-from PATH    Replace links into a legacy dotfiles checkout
  --home PATH            Use a different installation home
  --json / --no-color    Machine output / plain terminal output
  --plain               Use the numbered text menu instead of the visual picker
  --run-hook             Explicitly run your private ~/.mono/post-install.sh
  --skip-hook            Skip the optional private-hook prompt
  --bootstrap-python     Explicitly allow a private runtime if Python is absent

Python 3.9+ is sufficient. Without Python, an interactive prompt can install
uv and Python privately under ~/.mono/runtime. No sudo or shell edits are used.
After installation: mono-dotfiles status, install, list, update-runtime, update-codex, uninstall.
Coordinated home migration: mono-dotfiles rebase-home --dry-run.
HELP
            exit 0 ;;
    esac
done
if [ -z "$mono_target_home" ]; then
    printf '%s\n' 'No home directory is configured. Set HOME or pass --home PATH.' >&2
    exit 1
fi
case "$mono_release" in @*)
    printf '%s\n' 'This is the source template. Run ./dotfiles/install from the repository.' >&2
    exit 1
;; esac
mono_temp=$(mktemp -d "${TMPDIR:-/tmp}/mono-install.XXXXXXXX")
trap 'rm -rf "$mono_temp"' EXIT HUP INT TERM
mono_python=''
for mono_candidate in "${MONO_PYTHON:-python3}" python3.13 python3.12 python3.11 "$mono_target_home"/.mono/runtime/python/*/bin/python3; do
    if command -v "$mono_candidate" >/dev/null 2>&1 && "$mono_candidate" -c 'import sys; sys.exit(sys.version_info < (3, 9))' 2>/dev/null; then
        mono_python=$(command -v "$mono_candidate")
        break
    fi
done
if [ -z "$mono_python" ]; then
    if [ "$mono_dry_run" = 1 ]; then
        printf '%s\n' 'Python 3.9+ is needed for this preview. No runtime has been installed.' >&2
        exit 1
    fi
    if [ "$mono_runtime_consent" = 0 ] && [ "$mono_no_input" = 0 ] && ( : </dev/tty ) 2>/dev/null; then
        printf '%s\n' 'Python is missing. Install uv and Python privately in ~/.mono/runtime?' 'This downloads from astral.sh and GitHub, uses no sudo, and leaves shell startup unchanged.' >&2
        printf '%s' 'Install private runtime? [y/N] ' >&2
        read -r mono_answer </dev/tty
        case "$mono_answer" in y|Y|yes) mono_runtime_consent=1 ;; esac
    fi
    if [ "$mono_runtime_consent" != 1 ]; then
        printf '%s\n' 'Install Python 3.9+ using your approved tooling, or rerun with --bootstrap-python.' >&2
        exit 1
    fi
    if [ -L "$mono_target_home/.mono" ] || [ -L "$mono_target_home/.mono/runtime" ] || [ -L "$mono_target_home/.mono/runtime/bin" ] || [ -L "$mono_target_home/.mono/runtime/python" ] || [ -L "$mono_target_home/.mono/runtime/cache" ]; then
        printf '%s\n' 'Refusing a symlinked ~/.mono runtime directory.' >&2
        exit 1
    fi
    umask 077
    mkdir -p "$mono_target_home/.mono/runtime/bin"
    curl --proto '=https' --tlsv1.2 --fail --show-error --silent --location --connect-timeout 15 --max-time 120 https://astral.sh/uv/install.sh -o "$mono_temp/uv-install.sh"
    UV_NO_MODIFY_PATH=1 UV_UNMANAGED_INSTALL="$mono_target_home/.mono/runtime/bin" sh "$mono_temp/uv-install.sh"
    PATH="$mono_target_home/.mono/runtime/bin:$PATH" UV_PYTHON_INSTALL_DIR="$mono_target_home/.mono/runtime/python" UV_PYTHON_BIN_DIR="$mono_target_home/.mono/runtime/bin" UV_CACHE_DIR="$mono_target_home/.mono/runtime/cache" "$mono_target_home/.mono/runtime/bin/uv" python install 3.12
    mono_python=$(UV_PYTHON_INSTALL_DIR="$mono_target_home/.mono/runtime/python" UV_CACHE_DIR="$mono_target_home/.mono/runtime/cache" "$mono_target_home/.mono/runtime/bin/uv" python find --managed-python 3.12)
fi
printf '%s\n' 'Downloading the verified Mono shell environment…' >&2
curl --proto '=https' --tlsv1.2 --fail --show-error --silent --location --connect-timeout 15 --max-time 120 "$mono_base/releases/$mono_release/dotfiles.tar.gz" -o "$mono_temp/dotfiles.tar.gz"
"$mono_python" - "$mono_temp" "$mono_sha256" <<'PY'
import hashlib
from pathlib import Path
import sys
import tarfile

root = Path(sys.argv[1])
archive = root / 'dotfiles.tar.gz'
if hashlib.sha256(archive.read_bytes()).hexdigest() != sys.argv[2]:
    raise SystemExit('Payload checksum mismatch; nothing has been installed. Try downloading the installer again.')
with tarfile.open(archive) as bundle:
    members = bundle.getmembers()
    for member in members:
        if not member.isfile() or member.name.startswith('/') or '..' in Path(member.name).parts:
            raise SystemExit('Unexpected payload entry; installation stopped.')
    if sys.version_info >= (3, 12):
        bundle.extractall(root / 'payload', members=members, filter='data')
    else:
        bundle.extractall(root / 'payload', members=members)
PY
# curl | bash consumes stdin; hand only the downloaded installer a terminal when one exists.
# --no-input/--json intentionally keep stdin untouched for automation.
if [ "$mono_no_input" = 0 ] && [ ! -t 0 ] && ( : </dev/tty ) 2>/dev/null; then
    MONO_PYTHON="$mono_python" sh "$mono_temp/payload/install" "$@" </dev/tty
else
    MONO_PYTHON="$mono_python" sh "$mono_temp/payload/install" "$@"
fi