#!/bin/bash
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
# shellcheck source=./roundcube_common.sh
source "$SCRIPT_DIR/roundcube_common.sh"

rewrite_roundcube_config() {
  local source_file="$1"
  local target_file="$2"
  local dsn="$3"
  local tmp parent

  [ -f "$source_file" ] || {
    echo "roundcube: source config file not found: $source_file" >&2
    return 1
  }

  if [ -e "$target_file" ]; then
    [ -w "$target_file" ] || {
      echo "roundcube: config file is not writable: $target_file" >&2
      return 1
    }
  else
    parent="$(dirname "$target_file")"
    mkdir -p "$parent"
  fi

  tmp="$(mktemp)"
  awk '
    /BEGIN DIRECTADMIN MYSQL PLUGIN ROUNDCUBE/ { skip=1; next }
    /END DIRECTADMIN MYSQL PLUGIN ROUNDCUBE/ { skip=0; next }
    skip != 1 { print }
  ' "$source_file" > "$tmp"

  cat >> "$tmp" <<PHP

// BEGIN DIRECTADMIN MYSQL PLUGIN ROUNDCUBE
\$config['db_dsnw'] = '$dsn';
// END DIRECTADMIN MYSQL PLUGIN ROUNDCUBE
PHP

  if [ -e "$target_file" ]; then
    cat "$tmp" > "$target_file"
  else
    install -m 0644 "$tmp" "$target_file"
  fi
  rm -f "$tmp"
}

roundcube_enabled || {
  echo "roundcube: integration disabled by ROUNDCUBE_ENABLED."
  exit 0
}

CONFIG_FILE="$(roundcube_config_file)"
[ -f "$CONFIG_FILE" ] || {
  echo "roundcube: config file not found: $CONFIG_FILE" >&2
  exit 1
}
[ -w "$CONFIG_FILE" ] || {
  echo "roundcube: config file is not writable: $CONFIG_FILE" >&2
  exit 1
}

DSN="$(roundcube_alt_dsn)"
rewrite_roundcube_config "$CONFIG_FILE" "$CONFIG_FILE" "$DSN"

echo "roundcube: config repaired: $CONFIG_FILE"

if roundcube_write_custombuild_config; then
  CUSTOM_CONFIG_FILE="$(roundcube_custom_config_file)"
  if [ -f "$CUSTOM_CONFIG_FILE" ]; then
    rewrite_roundcube_config "$CUSTOM_CONFIG_FILE" "$CUSTOM_CONFIG_FILE" "$DSN"
  else
    rewrite_roundcube_config "$CONFIG_FILE" "$CUSTOM_CONFIG_FILE" "$DSN"
  fi
  echo "roundcube: CustomBuild config repaired: $CUSTOM_CONFIG_FILE"
fi