diff --git a/gen_assets.sh b/gen_assets.sh
new file mode 100644
index 0000000..3a102fa
--- /dev/null
+++ b/gen_assets.sh
@@ -0,0 +1,81 @@
+#!/bin/bash
+
+set -o errexit
+set -o pipefail
+set -o nounset
+
+# Set magic variables for current file & dir
+__dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+__file="${__dir}/$(basename "${BASH_SOURCE[0]}")"
+__base="$(basename ${__file} .sh)"
+
+
+DATADIR=${__dir}/data
+
+compile_dat () {
+    local TMPDIR=$(mktemp -d)
+
+    trap 'echo -e "Aborted, error $? in command: $BASH_COMMAND"; rm -rf $TMPDIR; trap ERR; exit 1' ERR
+
+    local GEOSITE=${GOPATH}/src/github.com/v2ray/domain-list-community
+    if [[ -d ${GEOSITE} ]]; then
+        cd ${GEOSITE} && git pull
+    else
+        mkdir -p ${GEOSITE}
+        cd ${GEOSITE} && git clone https://github.com/v2ray/domain-list-community.git .
+    fi
+    go run main.go
+
+    if [[ -e dlc.dat ]]; then
+        rm -f $DATADIR/geosite.dat
+        mv dlc.dat $DATADIR/geosite.dat
+        echo "----------> geosite.dat updated."
+    else
+        echo "----------> geosite.dat failed to update."
+    fi
+
+
+    if [[ ! -x $GOPATH/bin/geoip ]]; then
+        go get -v -u github.com/v2ray/geoip
+    fi
+
+    cd $TMPDIR
+    curl -L -O http://geolite.maxmind.com/download/geoip/database/GeoLite2-Country-CSV.zip
+    unzip -q GeoLite2-Country-CSV.zip
+    mkdir geoip && find . -name '*.csv' -exec mv -t ./geoip {} +
+    $GOPATH/bin/geoip \
+        --country=./geoip/GeoLite2-Country-Locations-en.csv \
+        --ipv4=./geoip/GeoLite2-Country-Blocks-IPv4.csv \
+        --ipv6=./geoip/GeoLite2-Country-Blocks-IPv6.csv
+
+    if [[ -e geoip.dat ]]; then
+        rm -f $DATADIR/geoip.dat
+        mv ./geoip.dat $DATADIR/geoip.dat
+        echo "----------> geoip.dat updated."
+    else
+        echo "----------> geoip.dat failed to update."
+    fi
+    trap ERR
+    return 0
+}
+
+
+download_dat () {
+    wget -qO - https://api.github.com/repos/v2ray/geoip/releases/latest \
+    | grep browser_download_url | cut -d '"' -f 4 \
+    | wget -i - -O $DATADIR/geoip.dat
+
+    wget -qO - https://api.github.com/repos/v2ray/domain-list-community/releases/latest \
+    | grep browser_download_url | cut -d '"' -f 4 \
+    | wget -i - -O $DATADIR/geosite.dat
+}
+
+ACTION="${1:-}"
+if [[ -z $ACTION ]]; then
+    ACTION=download
+fi
+
+case $ACTION in
+    "download") download_dat;;
+    "compile") compile_dat;;
+esac