#!/usr/bin/env bash
## create-vhost-litespeed.sh — sets up OLS config for one customer site.
##
## Approach: keep the stock LiteSpeed-shipped httpd_config.conf VERBATIM
## (it has all the cgid/lscgid plumbing that lscgid needs to actually
## create its IPC socket), and just APPEND our listeners + vhTemplate.
## The custom vhost template lives at conf/templates/site.conf and points
## at /home/${user}/public_html. envsubst renders our user/domain into
## both files at container start.
##
## Expects in env: user, domain, serveralias (optional).
set -euo pipefail

TPL_DIR=${TPL_DIR:-/etc/lsws-templates}
LSWS_CONF=/usr/local/lsws/conf

## Ensure the conf dir has stock config to append to. On first boot with
## a fresh image this is a no-op (image ships with conf/ populated). With
## a future volume mount of conf/, the upstream entrypoint pattern would
## copy from .conf/* — keep parity:
if [ -z "$(ls -A -- "$LSWS_CONF/" 2>/dev/null)" ]; then
  cp -R /usr/local/lsws/.conf/* "$LSWS_CONF/"
fi

## Build the serveralias suffix for vhDomain. Empty for none, else
## ",alias1,alias2" prepended to the comma list.
vhost_map_aliases=""
if [ -n "${serveralias:-}" ]; then
  for alias in $(echo "$serveralias" | tr ',' ' '); do
    [ -z "$alias" ] && continue
    vhost_map_aliases="${vhost_map_aliases},${alias}"
  done
fi
export vhost_map_aliases user domain

## --- prep the stock httpd_config.conf before appending ours ---
## Stock ships with `listener HTTP {*:80}`, `listener HTTPS {*:443}`, and
## a `vhTemplate docker` mapped to /var/www/vhosts/$VH_NAME/html — these
## conflict with our ports and would shadow our siteVH vhost. Strip them
## and the demo `virtualHost Example`, but KEEP `listener Default` (it's
## bound to 8088 — harmless internally, removing risks unrelated breakage).
## Always restart from a stock copy so re-runs are idempotent (otherwise
## a second sed pass on already-stripped config corrupts it).
cp /usr/local/lsws/.conf/httpd_config.conf "$LSWS_CONF/httpd_config.conf"

## Strip the stock blocks we replace. Use awk: easier than sed range-deletes
## to skip a NAMED block of arbitrary length terminated by a top-level `}`.
## extProcessor lsphp is stripped because the stock one hard-codes
## PHP_LSAPI_CHILDREN=10 regardless of container size — our appended
## extProcessor scales it from detect-memory-litespeed.sh.
awk '
  BEGIN { skip = 0 }
  /^listener HTTP \{/ || /^listener HTTPS \{/ || /^vhTemplate docker \{/ || /^extProcessor lsphp\{/ || /^extProcessor lsphp \{/ { skip = 1; next }
  skip && /^\}/ { skip = 0; next }
  !skip { print }
' "$LSWS_CONF/httpd_config.conf" > "$LSWS_CONF/httpd_config.conf.new"
mv "$LSWS_CONF/httpd_config.conf.new" "$LSWS_CONF/httpd_config.conf"

## --- append our listeners + vhTemplate ---
SENTINEL="## ---- cac-litespeed append (do not edit below) ----"
{
  echo ""
  echo "$SENTINEL"
  envsubst '${user} ${domain} ${vhost_map_aliases} ${PHPVER} ${LSAPI_CHILDREN}' < "$TPL_DIR/httpd_config.tpl"
} >> "$LSWS_CONF/httpd_config.conf"

## --- write our vhost template to /usr/local/lsws/conf/templates/site.conf ---
envsubst '${user}' < "$TPL_DIR/site-template.tpl" \
  > "$LSWS_CONF/templates/site.conf"

## --- per-vhost config file the vhTemplate will reference ---
## OLS creates conf/vhosts/$VH_NAME/ at template-instantiation time, but
## we pre-create it to satisfy the configFile path and write a minimal
## vhconf.conf (empty body — all real config is inline in the template's
## virtualHostConfig{} block).
mkdir -p "$LSWS_CONF/vhosts/siteVH"
echo "## auto-generated; real vhost config is in templates/site.conf" \
  > "$LSWS_CONF/vhosts/siteVH/vhconf.conf"

## Permissions: OLS reads conf/ as lsadm. Don't break that.
chown -R lsadm:nogroup "$LSWS_CONF" 2>/dev/null || true