#!/usr/bin/env bash
# Deploy the full stack to ambrosio.
#
# Usage:  infra/scripts/deploy-erosi.sh
# Env:    DEPLOY_HOST=ambrosio (override if needed)
#         DEPLOY_PATH=/opt/colectivo
#
# First run:
#   1. rsyncs repo → ambrosio:/opt/colectivo/
#   2. if .env doesn't exist on server, generates secrets and writes it with
#      placeholder values the operator must fill in (external Keycloak URL,
#      Keycloak client secret)
#   3. docker compose build + up -d
#   4. applies DB migrations
#
# Internal edge is a Caddy container listening on host port 3000 — the
# external proxy (TLS terminator, off-stack) forwards plain HTTP to
# ambrosio:3000. This script never touches the host reverse-proxy config —
# it only manages the Docker stack.
#
# Subsequent runs: rsync + rebuild app + rolling restart.
#
# Pre-deploy safety (every run, before any code/migration changes):
#   * pg_dumpall to /opt/colectivo/backups/predeploy-<ts>-<sha>.sql.gz
#   * Keep newest 10 backups, prune older.
#   * On success, append a line to /opt/colectivo/.deploys.log:
#       <iso-timestamp>  <git-sha>  <backup-filename>
# The rollback script (infra/scripts/rollback-erosi.sh) reads .deploys.log
# to pair (sha, backup) when rolling back code + DB together.

set -euo pipefail

DEPLOY_HOST="${DEPLOY_HOST:-ambrosio}"
DEPLOY_PATH="${DEPLOY_PATH:-/opt/colectivo}"
REPO_ROOT="$(cd "$(dirname "$0")/../.." && pwd)"

# Fase 14.3.5 — capture the short git sha on the deploy host (this
# machine) so it can be baked into the built app bundle as
# `__APP_COMMIT__`. We do it here rather than on ambrosio because we
# rsync without `.git`, so the remote can't run `git rev-parse`.
GIT_SHA="$(cd "$REPO_ROOT" && git rev-parse --short HEAD 2>/dev/null || echo dev)"

# Fase 17.3 — capture the exact-match tag on HEAD (if any). Empty
# string when HEAD is between tags. Warn (don't block) when missing
# so untaggable hotfix deploys still go through, and stamp the tag
# into .deploys.log so the rollback script can surface it.
GIT_TAG="$(cd "$REPO_ROOT" && git describe --exact-match --tags HEAD 2>/dev/null || true)"

if [ -z "$GIT_TAG" ]; then
	# ANSI yellow — visible enough to read past a terminal full of
	# rsync output, but no exit. Sleep gives the operator a 5s window
	# to Ctrl-C and tag HEAD before the rsync starts.
	printf '\033[33mWARNING:\033[0m HEAD is not at a tagged commit. Deploys without a tag\n'
	printf '         won'\''t map cleanly to CHANGELOG entries. Continue? [5s abort]\n'
	sleep 5
fi

if [ -n "$GIT_TAG" ]; then
	echo "==> Deploying to $DEPLOY_HOST:$DEPLOY_PATH (commit $GIT_SHA, tag $GIT_TAG)"
else
	echo "==> Deploying to $DEPLOY_HOST:$DEPLOY_PATH (commit $GIT_SHA, no tag)"
fi

# ── 1. Ensure target dir exists ────────────────────────────────────────────
ssh "$DEPLOY_HOST" "sudo mkdir -p $DEPLOY_PATH && sudo chown \$(id -u):\$(id -g) $DEPLOY_PATH"

# ── 2. rsync repo (excluding node_modules / build artefacts / local env) ──
rsync -az --delete \
	--exclude '.git' \
	--exclude 'node_modules' \
	--exclude '.svelte-kit' \
	--exclude 'apps/web/build' \
	--exclude 'apps/web/.vite' \
	--exclude '**/*.log' \
	--exclude '**/.env' \
	--exclude '**/.env.development' \
	--exclude '**/.env.local' \
	--exclude 'lighthouse-report.html' \
	--exclude 'coverage' \
	--exclude 'test-results' \
	--exclude 'playwright-report' \
	"$REPO_ROOT/" "$DEPLOY_HOST:$DEPLOY_PATH/"

# ── 3. Bootstrap secrets on first run; sanity-check placeholders every run ─
ssh "$DEPLOY_HOST" bash -s << 'REMOTE'
set -euo pipefail
cd /opt/colectivo

if [ ! -f .env ]; then
	echo "--- First deploy: generating secrets"

	# JWT triplet (anon + service_role)
	JWT_OUT=$(bash infra/scripts/rotate-jwt.sh)
	SUPABASE_JWT_SECRET=$(echo "$JWT_OUT" | awk -F= '/^SUPABASE_JWT_SECRET=/{print substr($0, index($0,$2))}')
	PUBLIC_SUPABASE_ANON_KEY=$(echo "$JWT_OUT" | awk -F= '/^PUBLIC_SUPABASE_ANON_KEY=/{print substr($0, index($0,$2))}')
	SUPABASE_SERVICE_ROLE_KEY=$(echo "$JWT_OUT" | awk -F= '/^SUPABASE_SERVICE_ROLE_KEY=/{print substr($0, index($0,$2))}')

	# Postgres + Realtime secrets
	POSTGRES_PASSWORD=$(openssl rand -hex 24)
	REALTIME_ENC_KEY=$(openssl rand -hex 8)       # 16 chars
	REALTIME_SECRET_KEY_BASE=$(openssl rand -hex 48) # 96 chars

	cat > .env <<EOF
# Generated on $(date -u +%Y-%m-%dT%H:%M:%SZ). Keep this file mode 600.
PUBLIC_APP_URL=https://erosi.limonia.net
PUBLIC_SUPABASE_URL=https://erosi.limonia.net

# External Keycloak — FILL THESE IN before the stack will boot usefully.
PUBLIC_KEYCLOAK_URL=FILL_IN_KEYCLOAK_URL
PUBLIC_KEYCLOAK_REALM=colectivo
PUBLIC_KEYCLOAK_CLIENT_ID=colectivo-web
KEYCLOAK_CLIENT_SECRET=FILL_IN_CLIENT_SECRET

POSTGRES_PASSWORD=$POSTGRES_PASSWORD

SUPABASE_JWT_SECRET=$SUPABASE_JWT_SECRET
PUBLIC_SUPABASE_ANON_KEY=$PUBLIC_SUPABASE_ANON_KEY
SUPABASE_SERVICE_ROLE_KEY=$SUPABASE_SERVICE_ROLE_KEY

REALTIME_ENC_KEY=$REALTIME_ENC_KEY
REALTIME_SECRET_KEY_BASE=$REALTIME_SECRET_KEY_BASE
EOF
	chmod 600 .env
	echo "--- Wrote .env (mode 600)."
	echo "    Fill in: PUBLIC_KEYCLOAK_URL, KEYCLOAK_CLIENT_SECRET"
	echo "    then re-run this script."
	exit 0
fi

# Every deploy: fail fast if the operator didn't finish the .env.
if grep -q '^PUBLIC_KEYCLOAK_URL=FILL_IN_' .env \
	|| grep -q '^KEYCLOAK_CLIENT_SECRET=FILL_IN_' .env; then
	echo "ERROR: /opt/colectivo/.env still contains FILL_IN_ placeholders." >&2
	echo "       Fill in PUBLIC_KEYCLOAK_URL, KEYCLOAK_CLIENT_SECRET and retry." >&2
	exit 1
fi
REMOTE

# ── 3b. Pre-deploy DB backup ──────────────────────────────────────────────
# Always taken BEFORE the new code/migrations land, so a paired rollback
# can restore both. Stored on ambrosio at /opt/colectivo/backups/. Keep
# newest 10; older ones get pruned.
ssh "$DEPLOY_HOST" env GIT_SHA="$GIT_SHA" bash -s << 'REMOTE'
set -euo pipefail
cd /opt/colectivo
: "${GIT_SHA:=dev}"

mkdir -p backups
BACKUP_TS=$(date -u +"%Y%m%dT%H%M%SZ")
BACKUP_FILE="backups/predeploy-${BACKUP_TS}-${GIT_SHA}.sql.gz"

echo "--- Pre-deploy backup → $BACKUP_FILE"
docker compose --env-file .env -f infra/docker-compose.erosi.yml exec -T db \
	pg_dumpall -U postgres --clean --if-exists </dev/null \
	| gzip > "$BACKUP_FILE"
size=$(stat -c%s "$BACKUP_FILE")
if [ "$size" -lt 1024 ]; then
	echo "ERROR: backup is suspiciously small ($size bytes). Aborting deploy." >&2
	rm -f "$BACKUP_FILE"
	exit 1
fi
echo "    ok ($(numfmt --to=iec --suffix=B "$size" 2>/dev/null || echo "$size bytes"))"

# Prune: keep newest 10 predeploy backups.
ls -1t backups/predeploy-*.sql.gz 2>/dev/null | tail -n +11 | xargs -r rm -f

# Stash filename for step 4 to record once everything succeeds.
echo "$BACKUP_FILE" > /tmp/.colectivo-last-backup
REMOTE

# ── 4. Build + bring up the stack ─────────────────────────────────────────
# We forward GIT_SHA over the ssh env so the remote `docker compose build`
# can substitute it into the Dockerfile build-arg (compose reads it from
# the same shell, not from .env, so a transient export is enough). ssh
# doesn't accept VAR=value args directly, so we prefix `env`.
#
# Fase 17.3.2: also forward GIT_TAG so the deploy log gets a 4th tab-
# separated column (empty string when HEAD is not at a tag — preserves
# the 3-column compat the rollback script's `cut -f1,2,3` already reads).
ssh "$DEPLOY_HOST" env GIT_SHA="$GIT_SHA" GIT_TAG="${GIT_TAG:-}" bash -s << 'REMOTE'
set -euo pipefail
cd /opt/colectivo
: "${GIT_SHA:=dev}"
: "${GIT_TAG:=}"

echo "--- Building app image (commit $GIT_SHA)"
GIT_SHA="$GIT_SHA" docker compose --env-file .env -f infra/docker-compose.erosi.yml \
	build --build-arg GIT_SHA="$GIT_SHA" app

echo "--- Bringing stack up (detached)"
GIT_SHA="$GIT_SHA" docker compose --env-file .env -f infra/docker-compose.erosi.yml up -d

echo "--- Waiting for db to be healthy"
for i in $(seq 1 60); do
	if docker compose --env-file .env -f infra/docker-compose.erosi.yml ps db --format json | grep -q '"Health":"healthy"'; then
		echo "db healthy"; break
	fi
	sleep 2
done

echo "--- Applying migrations"
# Every `docker compose exec -T` call below pipes in `</dev/null` (or the
# migration file for the apply step). This matters because the outer bash
# is reading its own script from stdin (`ssh ... bash -s << REMOTE`); a
# `docker compose exec -T` without its own stdin source drains the heredoc,
# silently eating the remainder of the script — observed as "first iteration
# runs, every subsequent migration vanishes from the log".
docker compose --env-file .env -f infra/docker-compose.erosi.yml exec -T db \
	psql -U postgres -d postgres </dev/null \
	-c "CREATE TABLE IF NOT EXISTS public._applied_migrations (filename TEXT PRIMARY KEY, applied_at TIMESTAMPTZ DEFAULT now());"

for f in supabase/migrations/*.sql; do
	fn=$(basename "$f")
	already=$(docker compose --env-file .env -f infra/docker-compose.erosi.yml exec -T db \
		psql -U postgres -d postgres -tAq </dev/null \
		-c "SELECT count(*) FROM public._applied_migrations WHERE filename='$fn'")
	if [ "${already:-0}" -gt 0 ]; then
		echo "  skip $fn (applied)"
		continue
	fi
	printf "  apply %s ... " "$fn"
	if docker compose --env-file .env -f infra/docker-compose.erosi.yml exec -T db \
			psql -U postgres -d postgres -v ON_ERROR_STOP=1 -q < "$f"; then
		docker compose --env-file .env -f infra/docker-compose.erosi.yml exec -T db \
			psql -U postgres -d postgres </dev/null \
			-c "INSERT INTO public._applied_migrations (filename) VALUES ('$fn') ON CONFLICT DO NOTHING;"
		echo "ok"
	else
		echo "FAIL"; exit 1
	fi
done

# Force PostgREST to reload its schema cache. Without this, RPCs added in
# the migrations above 404 with "Could not find the function ... in the
# schema cache" until the rest container is restarted. Confirmed bug on
# 2026-05-18 after migration 026 added set_item_frequency_weight +
# purge_item_frequency. NOTIFY is cheaper than a container restart.
echo "--- Reloading PostgREST schema cache"
docker compose --env-file .env -f infra/docker-compose.erosi.yml exec -T db \
	psql -U postgres -d postgres </dev/null \
	-c "NOTIFY pgrst, 'reload schema';"

# Record the successful deploy in .deploys.log (read by rollback-erosi.sh).
# Format: <iso-ts>\t<sha>\t<backup-file>\t<tag-or-empty>
# The 4th column is Fase 17 — older rows have 3 columns; the rollback
# script's `cut -f4` returns empty for them, which is the right
# "no tag" sentinel.
backup_file=$(cat /tmp/.colectivo-last-backup 2>/dev/null || echo "")
deploy_ts=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
printf '%s\t%s\t%s\t%s\n' "$deploy_ts" "$GIT_SHA" "$backup_file" "$GIT_TAG" \
	>> /opt/colectivo/.deploys.log
rm -f /tmp/.colectivo-last-backup
echo "--- Recorded deploy in /opt/colectivo/.deploys.log"
REMOTE

echo "==> Deploy complete."
echo "    App:       https://erosi.limonia.net"
echo "    Keycloak:  external — see PUBLIC_KEYCLOAK_URL in $DEPLOY_PATH/.env"