#!/usr/bin/env sh
# visit-portal installer — POSIX sh. macOS · Linux · Git Bash on Windows.
# No sudo. No silent shell-rc edits. No silent network calls. Confirms before acting.
# Non-TTY stdin (e.g. curl|sh) requires VISITPORTAL_ASSUME_YES=1.
#
# Release pinning: REPO_REF and REPO_TARBALL_SHA256 must be updated each release.
# Helper: scripts/compute-install-sha.sh v0.1.1 prints both values to paste here.

set -eu

VERSION="0.1.3"
REPO_URL="https://github.com/0motionguy/portal"
REPO_REF="v0.1.3"
REPO_TARBALL_SHA256="40d45eecc5ecbcdaf5a3448cb877df94ff2ea8fe2fd7e7602d8cf086632bce68"
INSTALL_DIR="${VISITPORTAL_HOME:-$HOME/.visitportal}"
BIN_DIR="$INSTALL_DIR/bin"
SHIM="$BIN_DIR/visit-portal"

say()  { printf '%s\n' "$*"; }
die()  { printf 'error: %s\n' "$*" >&2; exit 1; }
have() { command -v "$1" >/dev/null 2>&1; }
run()  { say "  \$ $*"; "$@"; }

MODE="install"; FROM_LOCAL=""; DRY_RUN=0
while [ $# -gt 0 ]; do
  case "$1" in
    --uninstall)  MODE="uninstall"; shift ;;
    --from-local) FROM_LOCAL="${2:-}"; [ -n "$FROM_LOCAL" ] || die "--from-local needs a path"; shift 2 ;;
    --dry-run)    DRY_RUN=1; shift ;;
    -h|--help)    MODE="help"; shift ;;
    *)            die "unknown argument: $1" ;;
  esac
done

# Refuse root / sudo — installer only ever writes to $HOME.
if [ "${EUID:-$(id -u 2>/dev/null || echo 0)}" = "0" ]; then
  die "do not run this as root / with sudo. Installer writes only to \$HOME."
fi

if [ "$MODE" = "help" ]; then
  cat <<EOF
visit-portal installer v$VERSION
USAGE:
  curl -fsSL visitportal.dev/install | sh   (requires VISITPORTAL_ASSUME_YES=1)
  sh install [--from-local <path>] [--uninstall] [--dry-run]
ENV:
  VISITPORTAL_HOME        override install dir (default ~/.visitportal)
  VISITPORTAL_ASSUME_YES  set to 1 to skip y/N prompt (required for non-TTY stdin)
EOF
  exit 0
fi

# Plan — print before doing anything.
say ""
say "visit-portal installer v$VERSION"
say "  install dir:  $INSTALL_DIR"
say "  shim target:  $SHIM"
if   [ "$MODE" = "uninstall" ];   then say "  mode:         UNINSTALL (will remove $INSTALL_DIR)"
elif [ -n "$FROM_LOCAL" ];        then say "  mode:         install from local path: $FROM_LOCAL"
else                                   say "  mode:         clone from $REPO_URL @ $REPO_REF"
fi
[ "$DRY_RUN" -eq 1 ] && say "  dry-run:      yes (no changes will be written)"
say ""

# Confirm. Non-TTY requires env opt-in.
if [ "${VISITPORTAL_ASSUME_YES:-0}" = "1" ]; then
  say "VISITPORTAL_ASSUME_YES=1 set; proceeding without prompt."
elif [ ! -t 0 ]; then
  die "stdin is not a TTY (piped install). Set VISITPORTAL_ASSUME_YES=1 to proceed."
else
  printf "continue? [y/N] "; read -r ans
  case "$ans" in [yY]|[yY][eE][sS]) : ;; *) die "aborted by user." ;; esac
fi

# Uninstall path.
if [ "$MODE" = "uninstall" ]; then
  [ -d "$INSTALL_DIR" ] || { say "nothing to remove at $INSTALL_DIR"; exit 0; }
  [ "$DRY_RUN" -eq 1 ] && { say "would run: rm -rf $INSTALL_DIR"; exit 0; }
  run rm -rf "$INSTALL_DIR"
  say "removed $INSTALL_DIR"
  say "reminder: if you added $BIN_DIR to your PATH manually, remove that line too."
  exit 0
fi

# Preflight deps.
have git  || die "git is required but not installed."
have pnpm || die "pnpm is required (npm install -g pnpm@10)."
have node || die "node >=22 is required."

[ "$DRY_RUN" -eq 1 ] && { say "dry-run: would create $INSTALL_DIR and write shim to $SHIM"; exit 0; }

run mkdir -p "$BIN_DIR"

if [ -n "$FROM_LOCAL" ]; then
  [ -d "$FROM_LOCAL/packages/cli" ] || die "no packages/cli at $FROM_LOCAL — not a Portal checkout."
  say "copying $FROM_LOCAL -> $INSTALL_DIR/repo (excluding node_modules)"
  run mkdir -p "$INSTALL_DIR/repo"
  ( cd "$FROM_LOCAL" && tar --exclude='node_modules' --exclude='.git' -cf - . ) \
    | ( cd "$INSTALL_DIR/repo" && tar -xf - )
else
  say "will fetch: $REPO_URL (ref: $REPO_REF)"
  if [ -d "$INSTALL_DIR/repo/.git" ]; then
    say "existing checkout found; updating."
    run git -C "$INSTALL_DIR/repo" fetch --depth 1 origin "$REPO_REF"
    run git -C "$INSTALL_DIR/repo" checkout -q "$REPO_REF"
    run git -C "$INSTALL_DIR/repo" reset --hard "origin/$REPO_REF"
  else
    run git clone --depth 1 --branch "$REPO_REF" "$REPO_URL" "$INSTALL_DIR/repo"
  fi
fi

say "installing dependencies (pnpm install --frozen-lockfile || pnpm install)"
( cd "$INSTALL_DIR/repo" && pnpm install --frozen-lockfile >/dev/null 2>&1 \
    || pnpm install >/dev/null )

cat > "$SHIM" <<'SHIM_EOF'
#!/usr/bin/env sh
# visit-portal shim — points at the CLI inside $VISITPORTAL_HOME/repo.
set -eu
REPO="${VISITPORTAL_HOME:-$HOME/.visitportal}/repo"
[ -d "$REPO" ] || { echo "visit-portal: repo missing at $REPO; reinstall." >&2; exit 1; }
exec pnpm --silent --dir "$REPO" --filter @visitportal/cli exec tsx src/cli.ts "$@"
SHIM_EOF
chmod +x "$SHIM"

say ""
say "installed."
say "  cli:     $SHIM"
say "  source:  $INSTALL_DIR/repo"
say ""
say "add this to your shell rc to put visit-portal on PATH:"
say "    export PATH=\"\$PATH:$BIN_DIR\""
say ""
say "try it:     $SHIM --help"
say "uninstall:  sh install --uninstall"