#!/usr/bin/env bash
#
# build.sh -- (re)embed docker-compose.yml, Caddyfile, .env.example into
# deploy.sh as a base64-encoded tar.gz payload after __ARCHIVE_BELOW__.
# Idempotent: strips any existing payload first.

set -euo pipefail

DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
SCRIPT="$DIR/deploy.sh"
MARKER="__ARCHIVE_BELOW__"

[[ -f "$SCRIPT" ]] || { echo "deploy.sh not found at $SCRIPT" >&2; exit 1; }
for f in docker-compose.yml Caddyfile .env.example; do
    [[ -f "$DIR/$f" ]] || { echo "Missing $DIR/$f" >&2; exit 1; }
done

PAYLOAD=$(tar -czf - -C "$DIR" docker-compose.yml Caddyfile .env.example | base64)

TMP=$(mktemp)
trap 'rm -f "$TMP"' EXIT

sed "/^${MARKER}\$/,\$d" "$SCRIPT" > "$TMP"
{
    echo "$MARKER"
    echo "$PAYLOAD"
} >> "$TMP"

mv "$TMP" "$SCRIPT"
chmod +x "$SCRIPT"
trap - EXIT

size=$(wc -c < "$SCRIPT")
echo "Built $SCRIPT (${size} bytes)"