v2ray-rules-dat: add updateScript

pkgs/by-name/v2/v2ray-rules-dat/package.nix

@@ -31,6 +31,7 @@ stdenvNoCC.mkDerivation (finalAttrs: {
       url = "https://github.com/Loyalsoldier/v2ray-rules-dat/releases/download/${finalAttrs.version}/geosite.dat";
       hash = "sha256-/c/3OjfALveNnHS9NxonTeOiZyud6U/X4WHrGZSOs7Q=";
     };
+    updateScript = ./update.sh;
   };
 
   meta = {

pkgs/by-name/v2/v2ray-rules-dat/update.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p curl jq nix common-updater-scripts
+
+set -euo pipefail
+
+version="$(
+  curl -fsSL ${GITHUB_TOKEN:+-u ":$GITHUB_TOKEN"} "https://api.github.com/repos/Loyalsoldier/v2ray-rules-dat/releases/latest" \
+    | jq -r .tag_name
+)"
+
+if [[ "$UPDATE_NIX_OLD_VERSION" == "$version" ]]; then
+  echo "Already up to date!"
+  exit 0
+fi
+
+prefetch_hash() {
+  local name="$1"
+  nix --extra-experimental-features nix-command \
+    store prefetch-file \
+    --json \
+    --hash-type sha256 \
+    "https://github.com/Loyalsoldier/v2ray-rules-dat/releases/download/$version/$name" \
+    | jq -r .hash
+}
+
+geoip_hash="$(prefetch_hash geoip.dat)"
+geosite_hash="$(prefetch_hash geosite.dat)"
+
+update-source-version "v2ray-rules-dat" "$version" "$geoip_hash" \
+  --source-key=passthru.geoipDat \
+  --ignore-same-version --ignore-same-hash
+
+update-source-version "v2ray-rules-dat" "$version" "$geosite_hash" \
+  --source-key=passthru.geositeDat \
+  --ignore-same-version --ignore-same-hash