#!/usr/bin/env bash
# shellbound installer -- checks prerequisites, installs the CLI, and verifies.
# Usage: bash install.sh
set -euo pipefail

DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
say() { printf 'install: %s\n' "$*"; }
die() { printf 'install: ERROR: %s\n' "$*" >&2; exit 1; }

# ---------------------------------------------------------------------------
# Prerequisites
# ---------------------------------------------------------------------------
command -v python3 >/dev/null 2>&1 || die "python3 is required but not on PATH"
if ! python3 - <<'PY'
import sys
sys.exit(0 if sys.version_info >= (3, 10) else 1)
PY
then
    die "python3 >= 3.10 is required (found: $(python3 --version 2>&1))"
fi
say "python3 OK ($(python3 --version 2>&1))"

if ! python3 -m pip --version >/dev/null 2>&1; then
    die "pip is required but 'python3 -m pip' fails; install pip first"
fi
say "pip OK"

CLIP=""
for t in xclip wl-copy pbcopy xsel; do
    if command -v "$t" >/dev/null 2>&1; then CLIP="$t"; break; fi
done
if [ -z "$CLIP" ]; then
    say "note: no clipboard backend found (xclip/wl-copy/pbcopy/xsel);"
    say "      --copy/--paste will be unavailable until one is installed."
fi

# ---------------------------------------------------------------------------
# Install
# ---------------------------------------------------------------------------
say "installing from $DIR ..."
if [ -n "${VIRTUAL_ENV:-}" ]; then
    python3 -m pip install "$DIR"
else
    say "installing to the user site-packages ..."
    if ! python3 -m pip install --user "$DIR"; then
        say "user-site install failed; retrying with --break-system-packages (PEP 668) ..."
        python3 -m pip install --user --break-system-packages "$DIR" \
            || die "pip install failed (see output above)"
    fi
fi

# ---------------------------------------------------------------------------
# Verify
# ---------------------------------------------------------------------------
say "verifying install ..."
python3 -m shellbound --version >/dev/null 2>&1 \
    || die "installed but 'python3 -m shellbound --version' failed"

BINDIR=""
if [ -d "${VIRTUAL_ENV:-}" ] && [ -x "$VIRTUAL_ENV/bin/shellbound" ]; then
    BINDIR="$VIRTUAL_ENV/bin"
elif [ -x "$HOME/.local/bin/shellbound" ]; then
    BINDIR="$HOME/.local/bin"
fi

if [ -n "$BINDIR" ]; then
    if ! "$BINDIR/shellbound" --version >/dev/null 2>&1; then
        say "note: the 'shellbound' command is at $BINDIR but is not on PATH;"
        say "      add it with:  export PATH=\"$BINDIR:\$PATH\""
    fi
else
    say "note: the 'shellbound' console script may not be on PATH; try:"
    say "      export PATH=\"$HOME/.local/bin:\$PATH\""
fi

say "done. Next: run 'shellbound setup' to configure the gateway and API key."