#!/bin/sh
# auto-build-push.sh — builds the merged geosite.dat and pushes it to a
# Gitea repo, so it can be served the same way rules.yaml already is
# (https://<gitea>/<owner>/<repo>/raw/branch/<branch>/geosite.dat).
#
# Required environment variables (set these in the Portainer stack, not
# baked into the image):
#   GITEA_URL     e.g. https://git.5838.ru
#   GITEA_REPO    e.g. Payroll3042/geosite-build   (must already exist, empty is fine)
#   GITEA_TOKEN   a Gitea personal access token with repo write access
#   GIT_USER_NAME e.g. geosite-bot
#   GIT_USER_EMAIL e.g. geosite-bot@5838.ru
# Optional:
#   GITEA_BRANCH  defaults to main

set -eu

: "${GITEA_URL:?GITEA_URL is required}"
: "${GITEA_REPO:?GITEA_REPO is required, e.g. Payroll3042/geosite-build}"
: "${GITEA_TOKEN:?GITEA_TOKEN is required}"
: "${GIT_USER_NAME:?GIT_USER_NAME is required}"
: "${GIT_USER_EMAIL:?GIT_USER_EMAIL is required}"
GITEA_BRANCH="${GITEA_BRANCH:-main}"

WORKDIR=/tmp/build
OUTDIR=/tmp/output
CUSTOM_DIR=/app/data-custom

echo "$(date -u +%Y-%m-%dT%H:%M:%SZ) ==> Starting build"

rm -rf "$WORKDIR" "$OUTDIR"
mkdir -p "$WORKDIR" "$OUTDIR"
cd "$WORKDIR"

echo "==> Cloning v2fly/domain-list-community"
git clone --depth 1 -q https://github.com/v2fly/domain-list-community.git v2fly

echo "==> Cloning hydraponique/roscomvpn-geosite"
git clone --depth 1 -q https://github.com/hydraponique/roscomvpn-geosite.git roscomvpn-src

echo "==> Merging data directories"
mkdir -p v2fly/data/roscomvpn v2fly/data/custom
cp -r roscomvpn-src/data/. v2fly/data/roscomvpn/
if [ -d "$CUSTOM_DIR" ]; then
  cp -r "$CUSTOM_DIR/." v2fly/data/custom/
fi

echo "==> Compiling merged geosite.dat"
cd v2fly
go run main.go

if [ ! -f dlc.dat ]; then
  echo "ERROR: build did not produce dlc.dat"
  exit 1
fi

cp dlc.dat "$OUTDIR/geosite.dat"
echo "==> Build produced $(wc -c < "$OUTDIR/geosite.dat") bytes"

echo "==> Cloning target Gitea repo"
GITEA_HOST="$(echo "$GITEA_URL" | sed -e 's~https\?://~~')"
PUSH_URL="https://${GITEA_TOKEN}@${GITEA_HOST}/${GITEA_REPO}.git"

cd /tmp
rm -rf repo
git clone -q --branch "$GITEA_BRANCH" "$PUSH_URL" repo || git clone -q "$PUSH_URL" repo
cd repo

git config user.name "$GIT_USER_NAME"
git config user.email "$GIT_USER_EMAIL"

cp "$OUTDIR/geosite.dat" ./geosite.dat

if git diff --quiet -- geosite.dat 2>/dev/null && [ -f geosite.dat ]; then
  echo "==> No changes since last build, skipping commit"
else
  git add geosite.dat
  git commit -q -m "Auto-build $(date -u +%Y-%m-%dT%H:%M:%SZ)"
  git push -q origin "HEAD:${GITEA_BRANCH}"
  echo "==> Pushed updated geosite.dat to ${GITEA_URL}/${GITEA_REPO}"
fi

echo "$(date -u +%Y-%m-%dT%H:%M:%SZ) ==> Done"