#!/usr/bin/env bash
# 渲染 deploy/templates/*.tpl → deploy/nginx、deploy/redis,并创建运行所需目录。
# 约定:每次 up 之前(或改模板/.env 后)必须重跑本脚本。幂等,可反复执行。
set -eu
cd "$(dirname "$0")"

if [ -f .env ]; then
  set -a; . ./.env; set +a
fi

NGINX_CLIENT_MAX_BODY_SIZE=${NGINX_CLIENT_MAX_BODY_SIZE:-200m}
REDIS_MAXMEMORY=${REDIS_MAXMEMORY:-128mb}
REDIS_MAXMEMORY_POLICY=${REDIS_MAXMEMORY_POLICY:-allkeys-lru}

for t in templates/nginx.conf.tpl templates/default.conf.tpl templates/redis.conf.tpl; do
  [ -f "$t" ] || { echo "prepare.sh: missing template $t" >&2; exit 1; }
done

mkdir -p nginx/conf.d redis logs/nginx api/storage

sed -e "s|{{NGINX_CLIENT_MAX_BODY_SIZE}}|${NGINX_CLIENT_MAX_BODY_SIZE}|g" \
  templates/nginx.conf.tpl > nginx/nginx.conf
sed -e "s|{{NGINX_CLIENT_MAX_BODY_SIZE}}|${NGINX_CLIENT_MAX_BODY_SIZE}|g" \
  templates/default.conf.tpl > nginx/conf.d/default.conf
sed -e "s|{{REDIS_MAXMEMORY}}|${REDIS_MAXMEMORY}|g" \
  -e "s|{{REDIS_MAXMEMORY_POLICY}}|${REDIS_MAXMEMORY_POLICY}|g" \
  templates/redis.conf.tpl > redis/redis.conf

echo "prepare.sh: rendered nginx($(pwd)/nginx), redis($(pwd)/redis), logs($(pwd)/logs/nginx), storage($(pwd)/api/storage)"