#!/usr/bin/env bash
# MasterHttpRelayVPN one-click launcher (Linux / macOS)
# Creates a local virtualenv, installs deps, runs the setup wizard
# if needed, then starts the proxy.

set -e
cd "$(dirname "$0")"

VENV_DIR=".venv"

find_python() {
    for cmd in python3.12 python3.11 python3.10 python3 python; do
        if command -v "$cmd" >/dev/null 2>&1; then
            ver=$("$cmd" -c 'import sys;print("%d.%d"%sys.version_info[:2])' 2>/dev/null || echo "0.0")
            major=${ver%.*}; minor=${ver#*.}
            if [ "$major" -ge 3 ] && [ "$minor" -ge 10 ]; then
                echo "$cmd"
                return 0
            fi
        fi
    done
    return 1
}

PY=$(find_python) || {
    echo "[X] Python 3.10+ not found. Install it and re-run this script." >&2
    exit 1
}

if [ ! -x "$VENV_DIR/bin/python" ]; then
    echo "[*] Creating virtual environment in $VENV_DIR ..."
    "$PY" -m venv "$VENV_DIR"
fi

VPY="$VENV_DIR/bin/python"

# Skip dependency install when all required packages are already importable.
# Pip install (even with -q) takes ~3-8s every launch; this drops it to <0.1s
# on warm runs.  Falls through to the install path on first run or if any
# import fails for any reason.
if "$VPY" -c "import cryptography, h2, brotli, zstandard" >/dev/null 2>&1; then
    echo "[*] Dependencies already installed — skipping pip install."
else
    echo "[*] Installing dependencies ..."
    "$VPY" -m pip install --disable-pip-version-check -q --upgrade pip >/dev/null
    if ! "$VPY" -m pip install --disable-pip-version-check -q -r requirements.txt; then
        echo "[!] PyPI install failed. Retrying via runflare mirror ..."
        "$VPY" -m pip install --disable-pip-version-check -q -r requirements.txt \
            -i https://mirror-pypi.runflare.com/simple/ \
            --trusted-host mirror-pypi.runflare.com
    fi
fi

if [ ! -f "config.json" ]; then
    echo "[*] No config.json found — launching setup wizard ..."
    "$VPY" setup.py
fi

echo
echo "[*] Starting MasterHttpRelayVPN ..."
echo
exec "$VPY" main.py "$@"