#!/usr/bin/env bash

# Copyright © 2023 OpenIM. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.





OPENIM_ROOT=$(cd "$(dirname "${BASH_SOURCE[0]}")"/../.. && pwd -P)
[[ -z ${COMMON_SOURCED} ]] && source "${OPENIM_ROOT}"/scripts/install/common.sh

SERVER_NAME="openim-api"

readonly OPENIM_API_PORT_TARGETS=(
  ${API_OPENIM_PORT}
)
readonly OPENIM_API_PORT_LISTARIES=("${OPENIM_API_PORT_TARGETS[@]##*/}")

readonly OPENIM_API_SERVICE_TARGETS=(
  openim-api
)
readonly OPENIM_API_SERVICE_LISTARIES=("${OPENIM_API_SERVICE_TARGETS[@]##*/}")

readonly OPENIM_API_PROMETHEUS_PORT_TARGETS=(
    ${API_PROM_PORT}
)
readonly OPENIM_API_PROMETHEUS_PORT_LISTARIES=("${OPENIM_API_PROMETHEUS_PORT_TARGETS[@]##*/}")

function openim::api::start() {
  rm -rf "$TMP_LOG_FILE"

  echo "++ OPENIM_API_SERVICE_LISTARIES: ${OPENIM_API_SERVICE_LISTARIES[@]}"
  echo "++ OPENIM_API_PORT_LISTARIES: ${OPENIM_API_PORT_LISTARIES[@]}"
  echo "++ OpenIM API config path: ${OPENIM_API_CONFIG}"

  openim::log::info "Starting ${SERVER_NAME} ..."

  readonly OPENIM_API_SERVER_LIBRARIES="${OPENIM_OUTPUT_HOSTBIN}/${SERVER_NAME}"


  printf "+------------------------+--------------+\n"
  printf "| Service Name           | Port         |\n"
  printf "+------------------------+--------------+\n"


  local length=${#OPENIM_API_SERVICE_LISTARIES[@]}
  for ((i=0; i<length; i++)); do
    printf "| %-22s | %6s       |\n" "${OPENIM_API_SERVICE_LISTARIES[$i]}" "${OPENIM_API_PORT_LISTARIES[$i]}"
    printf "+------------------------+--------------+\n"
    # Stop services on the specified ports before starting new ones
    openim::log::info "OpenIM ${OPENIM_API_SERVICE_LISTARIES[$i]} config path: ${OPENIM_API_CONFIG}"
    
    # Start the service with Prometheus port if specified
    result=$(openim::api::start_service "${OPENIM_API_SERVICE_LISTARIES[$i]}" "${OPENIM_API_PORT_LISTARIES[$i]}" "${OPENIM_API_PROMETHEUS_PORT_LISTARIES[$i]}")
    if [[ $? -ne 0 ]]; then
      openim::log::error "stop ${SERVER_NAME} failed"
    else
      openim::log::info "$result"
    fi

  done
  return 0
}

function openim::api::start_service() {
  local binary_name="$1"
  local service_port="$2"
  local prometheus_port="$3"
  
  local cmd="${OPENIM_OUTPUT_HOSTBIN}/${binary_name} --port ${service_port} -c ${OPENIM_API_CONFIG}"
  
  # Append Prometheus port argument if specified
  if [ -n "${prometheus_port}" ]; then
    cmd+=" --prometheus_port ${prometheus_port}"
  fi

  echo "Starting service with command: $cmd"
  
  #nohup $cmd >> "${LOG_FILE}" 2> >(tee -a "${STDERR_LOG_FILE}" "$TMP_LOG_FILE" >&2) &
  nohup ${cmd} >> "${LOG_FILE}" 2> >(tee -a  "$TMP_LOG_FILE" | while read line; do echo -e "\e[31m${line}\e[0m"; done >&2) >/dev/null &
  if [ $? -ne 0 ]; then
    openim::log::error_exit "Failed to start ${binary_name} on port ${service_port}."
    return 1
  fi
  return 0
}

###################################### Linux Systemd ######################################
SYSTEM_FILE_PATH="/etc/systemd/system/${SERVER_NAME}.service"

# Print the necessary information after installation
function openim::api::info() {
cat << EOF
openim-api listen on: ${OPENIM_API_HOST}:${API_OPENIM_PORT}
EOF
}

# install openim-api
function openim::api::install() {
  openim::log::info "Installing ${SERVER_NAME} ..."
  
  pushd "${OPENIM_ROOT}"
  
  # 1. Build openim-api
  make build BINS=${SERVER_NAME}
  openim::common::sudo "cp -r ${OPENIM_OUTPUT_HOSTBIN}/${SERVER_NAME} ${OPENIM_INSTALL_DIR}/${SERVER_NAME}"
  openim::log::status "${SERVER_NAME} binary: ${OPENIM_INSTALL_DIR}/${SERVER_NAME}/${SERVER_NAME}"
  
  # 2. Generate and install the openim-api configuration file (config)
  openim::log::status "${SERVER_NAME} config file: ${OPENIM_CONFIG_DIR}/config.yaml"
  
  # 3. Create and install the ${SERVER_NAME} systemd unit file
  echo ${LINUX_PASSWORD} | sudo -S bash -c \
  "SERVER_NAME=${SERVER_NAME} ./scripts/genconfig.sh ${ENV_FILE} deployments/templates/openim.service > ${SYSTEM_FILE_PATH}"
  openim::log::status "${SERVER_NAME} systemd file: ${SYSTEM_FILE_PATH}"
  
  # 4. Start the openim-api service
  openim::common::sudo "systemctl daemon-reload"
  openim::common::sudo "systemctl restart ${SERVER_NAME}"
  openim::common::sudo "systemctl enable ${SERVER_NAME}"
  openim::api::status || return 1
  openim::api::info
  
  openim::log::info "install ${SERVER_NAME} successfully"
  popd
}

# Unload
function openim::api::uninstall() {
  openim::log::info "Uninstalling ${SERVER_NAME} ..."
  
  set +o errexit
  openim::common::sudo "systemctl stop ${SERVER_NAME}"
  openim::common::sudo "systemctl disable ${SERVER_NAME}"
  openim::common::sudo "rm -f ${OPENIM_INSTALL_DIR}/${SERVER_NAME}"
  openim::common::sudo "rm -f ${OPENIM_CONFIG_DIR}/${SERVER_NAME}.yaml"
  openim::common::sudo "rm -f /etc/systemd/system/${SERVER_NAME}.service"

  openim::log::info "uninstall ${SERVER_NAME} successfully"
}

# Status Check
function openim::api::status() {
  openim::log::info "Checking ${SERVER_NAME} status ..."
  
  # Check the running status of the ${SERVER_NAME}. If active (running) is displayed, the ${SERVER_NAME} is started successfully.
  systemctl status ${SERVER_NAME}|grep -q 'active' || {
    openim::log::error "${SERVER_NAME} failed to start, maybe not installed properly"
    return 1
  }
  
  openim::util::check_ports ${OPENIM_API_PORT_LISTARIES[@]}
}

if [[ "$*" =~ openim::api:: ]];then
  eval $*
fi