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

HOST="${MCP_HOST:-0.0.0.0}"
PORT="${MCP_PORT:-8787}"
ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"

load_env_file() {
  local env_file="$1"
  local line key value first last comment_start

  [[ -r "${env_file}" ]] || return 0

  while IFS= read -r line || [[ -n "${line}" ]]; do
    line="${line#"${line%%[![:space:]]*}"}"
    line="${line%"${line##*[![:space:]]}"}"

    [[ -z "${line}" || "${line}" == \#* || "${line}" != *=* ]] && continue

    key="${line%%=*}"
    value="${line#*=}"
    key="${key%"${key##*[![:space:]]}"}"
    value="${value#"${value%%[![:space:]]*}"}"
    value="${value%"${value##*[![:space:]]}"}"

    [[ "${key}" =~ ^[A-Za-z_][A-Za-z0-9_]*$ ]] || continue
    [[ -v "${key}" ]] && continue

    first="${value:0:1}"
    last="${value: -1}"
    if [[ "${#value}" -ge 2 && ( ( "${first}" == "'" && "${last}" == "'" ) || ( "${first}" == '"' && "${last}" == '"' ) ) ]]; then
      value="${value:1:${#value}-2}"
    else
      comment_start="${value%%" #"*}"
      if [[ "${comment_start}" != "${value}" ]]; then
        value="${comment_start}"
        value="${value%"${value##*[![:space:]]}"}"
      fi
    fi

    export "${key}=${value}"
  done < "${env_file}"
}

load_env_file "${ROOT}/.env"

HOST="${MCP_HOST:-${HOST}}"
PORT="${MCP_PORT:-${PORT}}"

if [[ "${MCP_ALLOW_UNAUTHENTICATED:-}" != "1" && -z "${MCP_AUTH_TOKEN:-}" ]]; then
  MCP_AUTH_TOKEN="$(php -r 'echo bin2hex(random_bytes(24));')"
  export MCP_AUTH_TOKEN
  echo "Generated MCP_AUTH_TOKEN for this session:"
  echo "${MCP_AUTH_TOKEN}"
  echo
fi

if [[ -z "${VOIPMS_API_USERNAME:-}" || -z "${VOIPMS_API_PASSWORD:-}" ]]; then
  echo "Warning: VOIPMS_API_USERNAME or VOIPMS_API_PASSWORD is not set."
  echo "Read-only protocol methods will work, but VoIP.ms tools will fail until credentials are present."
  echo
fi

echo "Starting VoIP.ms test MCP server"
echo "URL: http://${HOST}:${PORT}/mcp"
echo "Health: http://${HOST}:${PORT}/health"
echo "Auth: Authorization: Bearer ${MCP_AUTH_TOKEN:-<disabled>}"
echo

exec php -S "${HOST}:${PORT}" -t "${ROOT}/mcp" "${ROOT}/mcp/http-server.php"