#!/bin/sh
# Puts hamloy, Hamloy's program for this computer, in ~/.local/bin, and that
# folder on the PATH of new terminals:
#   curl -fsSL https://hamloy.com/install | sh
# Then, in a project's folder, it goes straight on to hamloy connect: one
# sign-in in the browser, and Claude Code and Codex set up for the folder.
# /install?project=NAME connects to that project; words after sh -s -- are
# another hamloy command to run instead.
# The server hands this out with its own address and the command filled in.
set -eu

base="https://hamloy.com"
dir="$HOME/.local/bin"
[ $# -gt 0 ] || set -- connect

fail() {
  printf '✗ %s\n' "$1" >&2
  [ -z "${2:-}" ] || printf '  fix: %s\n' "$2" >&2
  exit 1
}

case "$(uname -s)" in
  Darwin) os=darwin ;;
  Linux) os=linux ;;
  MINGW* | MSYS* | CYGWIN*) fail "this is Windows" "in PowerShell: irm $base/install.ps1 | iex" ;;
  *) fail "hamloy isn't made for $(uname -s) yet" ;;
esac
case "$(uname -m)" in
  x86_64 | amd64) arch=amd64 ;;
  arm64 | aarch64) arch=arm64 ;;
  *) fail "hamloy isn't made for $(uname -m) processors yet" ;;
esac
# A shell under Rosetta still gets the program made for the Apple chip.
if [ "$os" = darwin ] && [ "$arch" = amd64 ] && [ "$(sysctl -n sysctl.proc_translated 2>/dev/null || true)" = 1 ]; then
  arch=arm64
fi

fetch() {
  if command -v curl >/dev/null 2>&1; then
    curl -fsSL "$1" -o "$2"
  elif command -v wget >/dev/null 2>&1; then
    wget -q "$1" -O "$2"
  else
    fail "neither curl nor wget is on this computer" "install curl, then run this again"
  fi
}

sum() {
  if command -v sha256sum >/dev/null 2>&1; then sha256sum "$1"; else shasum -a 256 "$1"; fi | cut -d ' ' -f 1
}

# The system's temporary folder can be closed to a sandboxed assistant;
# the home folder, which this installs into anyway, is the other place.
tmp=$(mktemp -d 2>/dev/null || mktemp -d "$HOME/.hamloy-install.XXXXXX") || fail "couldn't make a folder to download into" "check that $HOME can be written to, then run this again"
trap 'rm -rf "$tmp"' EXIT
name="hamloy-$os-$arch"

echo "  downloading hamloy for $os/$arch from $base"
fetch "$base/downloads/$name" "$tmp/hamloy" || fail "couldn't download $base/downloads/$name" "check the connection, then run this again"
fetch "$base/downloads/SHA256SUMS" "$tmp/SHA256SUMS" || fail "couldn't download $base/downloads/SHA256SUMS" "check the connection, then run this again"
want=$(awk -v name="$name" '$2 == name || $2 == "*" name { print $1 }' "$tmp/SHA256SUMS")
if [ -z "$want" ] || [ "$want" != "$(sum "$tmp/hamloy")" ]; then
  fail "the download doesn't match its checksum, so nothing was installed" "run this again"
fi

chmod 755 "$tmp/hamloy"
mkdir -p "$dir"
mv -f "$tmp/hamloy" "$dir/hamloy"
echo "✓ installed $("$dir/hamloy" version) in ~/.local/bin/hamloy"

# New terminals find hamloy by its name: ~/.local/bin goes on the PATH in
# the shell's profile, once. Claude Code and Codex don't need it; they run
# the program by its full path.
# This terminal keeps the PATH it had, so it is told the full path.
program=hamloy
case ":$PATH:" in
  *":$dir:"*) ;;
  *)
    program="~/.local/bin/hamloy"
    line='export PATH="$HOME/.local/bin:$PATH"'
    case "${SHELL##*/}" in
      zsh) profile="${ZDOTDIR:-$HOME}/.zshrc" ;;
      bash) if [ "$os" = darwin ]; then profile="$HOME/.bash_profile"; else profile="$HOME/.bashrc"; fi ;;
      fish) profile="$HOME/.config/fish/conf.d/hamloy.fish" line='fish_add_path -g $HOME/.local/bin' ;;
      *) profile="$HOME/.profile" ;;
    esac
    shown=$(printf '%s' "$profile" | sed "s|^$HOME|~|")
    if grep -qs '\.local/bin' "$profile"; then
      echo "  ~/.local/bin is on the PATH in $shown; terminals opened from now on find hamloy"
    elif mkdir -p "$(dirname "$profile")" && printf '\n# hamloy\n%s\n' "$line" >> "$profile"; then
      echo "✓ put ~/.local/bin on the PATH of new terminals, in $shown (the two lines marked # hamloy; delete them to undo)"
    else
      echo "  couldn't add ~/.local/bin to $shown; add this line to your shell's profile: $line"
    fi
    ;;
esac

# On to connect, unless this is the home folder rather than a project's.
# Without a terminal (an assistant running this) connect still signs in in
# the browser, and says what it couldn't ask.
if [ "$(pwd -P)" != "$(cd "$HOME" && pwd -P)" ]; then
  echo
  if (: </dev/tty) 2>/dev/null; then
    exec "$dir/hamloy" "$@" </dev/tty
  fi
  exec "$dir/hamloy" "$@" </dev/null
fi
next=$program
for word in "$@"; do
  case "$word" in
    *[!A-Za-z0-9_.@+:/=-]*) next="$next '$(printf '%s' "$word" | sed "s/'/'\\\\''/g")'" ;;
    *) next="$next $word" ;;
  esac
done
echo
echo "Next, in your project's folder: $next"