#!/usr/bin/env bash
# Deploy irongit to the rybbit server: build the image here, ship it over SSH,
# and roll only the irongit service in /opt/hygo (behind Caddy, on the shared
# Postgres). Publishes the bundled ig CLI to R2 when its version changed.
#
#   ./deploy.sh
#
# Roll back to the previous image:
#   ssh rybbit 'cd /opt/hygo && docker tag irongit:$(cat .irongit.prev) irongit:latest && docker compose up -d --no-deps irongit'
set -euo pipefail

cd "$(dirname "$0")"
REMOTE=${DEPLOY_HOST:-rybbit}
TAG=$(git rev-parse --short HEAD)
if ! git diff --quiet HEAD; then
    TAG="$TAG-dirty-$(date +%Y%m%d%H%M%S)"
fi
PUBLIC_URL=${DEPLOY_PUBLIC_URL:-https://git.hygo.ai}
# ig's version is major.minor from cli/Cargo.toml plus the number of commits
# that touched the CLI, so any CLI change publishes a newer release that
# `ig upgrade` (and its daily notice) picks up. No manual bumps.
IG_BASE=$(sed -n 's/^version = "\([0-9]*\.[0-9]*\)\..*"/\1/p' cli/Cargo.toml | head -1)
IG_VERSION="$IG_BASE.$(git rev-list --count HEAD -- cli shared)"

echo "==> building irongit:$TAG (ig $IG_VERSION, default host $PUBLIC_URL)"
docker build --build-arg "IG_BUILD_VERSION=$IG_VERSION" --build-arg "IG_DEFAULT_HOST=$PUBLIC_URL" -t "irongit:$TAG" .

echo "==> shipping to $REMOTE"
docker save "irongit:$TAG" | gzip -1 | ssh "$REMOTE" 'gunzip | docker load'

echo "==> rolling"
ssh "$REMOTE" bash -s -- "$TAG" "$IG_VERSION" <<'REMOTE_SCRIPT'
set -euo pipefail
cd /opt/hygo
tag=$1
ig_version=$2

[ -f .irongit.tag ] && cp .irongit.tag .irongit.prev
docker tag "irongit:$tag" irongit:latest
echo "$tag" > .irongit.tag
docker compose up -d --no-deps irongit

ok=0
for _ in $(seq 1 45); do
    status=$(docker inspect irongit --format '{{.State.Health.Status}}' 2>/dev/null || echo none)
    if [ "$status" = healthy ]; then ok=1; break; fi
    sleep 2
done
if [ "$ok" != 1 ]; then
    echo "irongit did not become healthy; last logs:" >&2
    docker logs --tail 60 irongit >&2
    exit 1
fi
echo "irongit:$tag healthy"

published=$(docker exec irongit wget -qO- http://127.0.0.1:7878/api/v1/cli/latest 2>/dev/null | sed -n 's/.*"version":"\([^"]*\)".*/\1/p' || true)
if [ "$published" != "$ig_version" ]; then
    echo "publishing ig $ig_version (was ${published:-none})"
    docker exec irongit irongit admin publish-cli /usr/local/share/irongit/ig --version "$ig_version"
fi

# Keep the three newest irongit images.
docker images irongit --format '{{.Tag}} {{.CreatedAt}}' | grep -v '^latest ' | sort -k2 -r | tail -n +4 | cut -d' ' -f1 \
    | while read -r old; do [ "$old" = "$tag" ] || docker rmi "irongit:$old" >/dev/null 2>&1 || true; done
REMOTE_SCRIPT

echo "==> done: $PUBLIC_URL"