#!/usr/bin/env bash
set -Eeuo pipefail

SCRIPT_PATH="$(readlink -f -- "${BASH_SOURCE[0]}" 2>/dev/null || true)"
if [[ -z "${SCRIPT_PATH}" ]]; then
  SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
else
  SCRIPT_DIR="$(cd -- "$(dirname -- "${SCRIPT_PATH}")" && pwd)"
fi
cd -- "${SCRIPT_DIR}"

CONFIG_FILE="${SCRIPT_DIR}/commonwealth-server.json"
UPDATE_DEPENDENCIES=0
SERVER_ARGS=()
ARGS=("$@")
INDEX=0
while [[ ${INDEX} -lt ${#ARGS[@]} ]]; do
  arg="${ARGS[${INDEX}]}"
  case "${arg}" in
    --update-dependencies) UPDATE_DEPENDENCIES=1 ;;
    --config|-c)
      INDEX=$((INDEX + 1)); [[ ${INDEX} -lt ${#ARGS[@]} ]] || { echo "ERROR: ${arg} requires a path" >&2; exit 1; }
      CONFIG_FILE="${ARGS[${INDEX}]}" ;;
    --config=*) CONFIG_FILE="${arg#--config=}" ;;
    --host|--port|-H|-p)
      SERVER_ARGS+=("${arg}"); INDEX=$((INDEX + 1)); [[ ${INDEX} -lt ${#ARGS[@]} ]] || { echo "ERROR: ${arg} requires a value" >&2; exit 1; }
      SERVER_ARGS+=("${ARGS[${INDEX}]}") ;;
    --host=*|--port=*|--interactive|-i) SERVER_ARGS+=("${arg}") ;;
    *.json) CONFIG_FILE="${arg}" ;;
    -*) echo "ERROR: Unknown option: ${arg}" >&2; exit 1 ;;
    *) [[ -f "${arg}" ]] && CONFIG_FILE="${arg}" || { echo "ERROR: Unexpected argument: ${arg}" >&2; exit 1; } ;;
  esac
  INDEX=$((INDEX + 1))
done

if [[ "${CONFIG_FILE}" != /* ]]; then CONFIG_FILE="${SCRIPT_DIR}/${CONFIG_FILE}"; fi
CONFIG_FILE="$(cd -- "$(dirname -- "${CONFIG_FILE}")" && pwd)/$(basename -- "${CONFIG_FILE}")"

resolve_server() {
  local apphost="${SCRIPT_DIR}/CommonwealthOnline.Server"
  local dll="${SCRIPT_DIR}/CommonwealthOnline.Server.dll"
  local project="${SCRIPT_DIR}/CommonwealthOnline.Server.csproj"
  if [[ -f "${apphost}" ]]; then
    chmod +x "${apphost}" 2>/dev/null || true
    SERVER_CMD=("${apphost}")
    return 0
  fi
  if [[ -f "${dll}" ]] && command -v dotnet >/dev/null 2>&1; then
    SERVER_CMD=(dotnet "${dll}")
    return 0
  fi
  if [[ -f "${project}" ]] && command -v dotnet >/dev/null 2>&1; then
    SERVER_CMD=(dotnet run --project "${project}" -c Release --no-launch-profile --)
    return 0
  fi
  return 1
}

if ! resolve_server; then
  echo "ERROR: CommonwealthOnline.Server is not published and the .NET 8 SDK/runtime is unavailable." >&2
  exit 1
fi

if [[ ${UPDATE_DEPENDENCIES} -eq 1 ]]; then
  command -v dotnet >/dev/null 2>&1 || { echo "ERROR: --update-dependencies requires the .NET SDK" >&2; exit 1; }
  dotnet restore "${SCRIPT_DIR}/CommonwealthOnline.Server.csproj"
fi

if [[ ! -f "${CONFIG_FILE}" ]]; then
  echo "Generating default configuration: ${CONFIG_FILE}"
  "${SERVER_CMD[@]}" config init "${CONFIG_FILE}"
fi

if [[ -t 0 && -t 1 ]] && [[ ! " ${SERVER_ARGS[*]} " =~ " --interactive " ]] && [[ ! " ${SERVER_ARGS[*]} " =~ " -i " ]]; then
  SERVER_ARGS+=(--interactive)
fi

echo "Starting Commonwealth Online C# server"
exec "${SERVER_CMD[@]}" serve --config "${CONFIG_FILE}" "${SERVER_ARGS[@]}"