#!/bin/ash

# Judge architecture
case "$(arch -s)" in
    'i386' | 'i686')
        BIT='32'
        ;;
    'amd64' | 'x86_64')
        BIT='64'
        ;;
    *)
        echo "error: The architecture is not supported."
        exit 1
        ;;
esac

if [ "$(command -v apk)" ]; then
    apk update
    apk add curl unzip
else
    echo "error: The script does not support the package manager in this operating system."
    exit 1
fi

TMP_DIRECTORY="$(mktemp -d)/"
ZIP_FILE="${TMP_DIRECTORY}v2ray-linux-$BIT.zip"
DOWNLOAD_LINK="https://github.com/v2ray/v2ray-core/releases/latest/download/v2ray-linux-$BIT.zip"

curl -L -H 'Cache-Control: no-cache' -o "$ZIP_FILE" "$DOWNLOAD_LINK" -#
if [ "$?" -ne '0' ]; then
    echo 'error: Download failed! Please check your network or try again.'
    exit 1
fi
curl -L -H 'Cache-Control: no-cache' -o "$ZIP_FILE.dgst" "$DOWNLOAD_LINK.dgst" -#
if [ "$?" -ne '0' ]; then
    echo 'error: Download failed! Please check your network or try again.'
    exit 1
fi

# Verification of V2Ray archive
for LISTSUM in 'md5' 'sha1' 'sha256' 'sha512'; do
    SUM="$(${LISTSUM}sum $ZIP_FILE | sed 's/ .*//')"
    CHECKSUM="$(grep $(echo $LISTSUM | tr [:lower:] [:upper:]) $ZIP_FILE.dgst | sed 's/.* //')"
    if [[ "$SUM" != "$CHECKSUM" ]]; then
        echo 'error: Check failed! Please check your network or try again.'
        exit 1
    fi
done

unzip -q "$ZIP_FILE" -d "$TMP_DIRECTORY"

install -m 755 "${TMP_DIRECTORY}v2ray" "/usr/local/bin/v2ray"
install -m 755 "${TMP_DIRECTORY}v2ctl" "/usr/local/bin/v2ctl"
install -d /usr/local/lib/v2ray/
install -m 755 "${TMP_DIRECTORY}geoip.dat" "/usr/local/lib/v2ray/geoip.dat"
install -m 755 "${TMP_DIRECTORY}geosite.dat" "/usr/local/lib/v2ray/geosite.dat"
if [ ! -d '/usr/local/etc/v2ray/' ]; then
    install -d /usr/local/etc/v2ray/
    for BASE in 00_log 01_api 02_dns 03_routing 04_policy 05_inbounds 06_outbounds 07_transport 08_stats 09_reverse; do
        echo '{}' > "/usr/local/etc/v2ray/$BASE.json"
    done
    CONFDIR=yes
fi
if [ ! -d '/var/log/v2ray/' ]; then
    install -d -o nobody -g nobody /var/log/v2ray/
    LOG=yes
fi
if [ ! -f '/etc/init.d/v2ray' ]; then
    mkdir "${TMP_DIRECTORY}init.d/"
    curl -o "${TMP_DIRECTORY}init.d/v2ray" https://raw.githubusercontent.workers.dev/v2fly/alpinelinux-install-v2ray/master/init.d/v2ray -s
    if [[ "$?" -ne '0' ]]; then
        echo 'error: Failed to start service file download! Please check your network or try again.'
        exit 1
    fi
    install -m 755 "${TMP_DIRECTORY}init.d/v2ray" /etc/init.d/v2ray
    OPENRC=yes
fi

rm -r "$TMP_DIRECTORY"

echo 'installed: /usr/local/bin/v2ray'
echo 'installed: /usr/local/bin/v2ctl'
echo 'installed: /usr/local/lib/v2ray/geoip.dat'
echo 'installed: /usr/local/lib/v2ray/geosite.dat'
if [ -n "$CONFDIR" ]; then
    echo 'installed: /usr/local/etc/v2ray/00_log.json'
    echo 'installed: /usr/local/etc/v2ray/01_api.json'
    echo 'installed: /usr/local/etc/v2ray/02_dns.json'
    echo 'installed: /usr/local/etc/v2ray/03_routing.json'
    echo 'installed: /usr/local/etc/v2ray/04_policy.json'
    echo 'installed: /usr/local/etc/v2ray/05_inbounds.json'
    echo 'installed: /usr/local/etc/v2ray/06_outbounds.json'
    echo 'installed: /usr/local/etc/v2ray/07_transport.json'
    echo 'installed: /usr/local/etc/v2ray/08_stats.json'
    echo 'installed: /usr/local/etc/v2ray/09_reverse.json'
fi
if [ -n "$LOG" ]; then
    echo 'installed: /var/log/v2ray/'
fi
if [ -n "$OPENRC" ]; then
    echo 'installed: /etc/init.d/v2ray'
fi