#!/bin/bash

# Support docker compose v1 and v2
shopt -s expand_aliases
alias docker-compose='docker compose'
if ! docker compose version &> /dev/null; then
    unalias docker-compose
fi

# Change default http timeout for slow networks
export COMPOSE_HTTP_TIMEOUT=500
export DOCKER_CLIENT_TIMEOUT=500

# Deployed images by media-node-controller
IMAGES=(
    "kurento-media-server"
    "docker.elastic.co/beats/filebeat"
    "docker.elastic.co/beats/metricbeat"
    "openvidu/media-node-controller"
    "openvidu/speech-to-text-service"
    "openvidu/mediasoup-controller"
    "openvidu/openvidu-coturn"
)

docker_command_by_container_image() {
    IMAGE_NAME=$1
    COMMAND=$2
    if  [[ -n "${IMAGE_NAME}" ]]; then
        CONTAINERS="$(docker ps -a | grep "${IMAGE_NAME}" | awk '{print $1}')"
        for CONTAINER_ID in $CONTAINERS; do
            if [[ -n "${CONTAINER_ID}" ]] && [[ -n "${COMMAND}" ]]; then
                bash -c "docker ${COMMAND} ${CONTAINER_ID}"
            fi
        done
    fi
}

collect_basic_information() {
    LINUX_VERSION=$(lsb_release -d)
    DOCKER_PS=$(docker ps)
    DOCKER_VERSION=$(docker version --format '{{.Server.Version}}')
    DOCKER_COMPOSE_VERSION=$(docker-compose version --short)
    OV_FOLDER="${PWD}"
    OV_VERSION=$(grep 'Openvidu Version:' "${OV_FOLDER}/docker-compose.yml" | awk '{ print $4 }')
    CONTAINERS=$(docker ps | awk '{if(NR>1) print $NF}')
    OV_TYPE_INSTALLATION=$(grep 'Installation Mode:' "${OV_FOLDER}/docker-compose.yml" | awk '{ print $4,$5 }')
    TREE_OV_DIRECTORY=$(find "." ! -path '*/0/*' | sed -e "s/[^-][^\/]*\// |/g" -e "s/|\([^ ]\)/|-\1/")
}

version_ov() {
    collect_basic_information

    printf '\nOpenvidu Information:'
    printf '\n'
    printf '\n  OpenVidu Edition: Enterprise HA'
    printf '\n  Installation Type: %s' "${OV_TYPE_INSTALLATION}"
    printf '\n  Openvidu Version: %s' "${OV_VERSION}"
    printf '\n'
    printf '\nSystem Information:'
    printf '\n'
    printf '\n  Linux Version:'
    printf '\n    - %s' "${LINUX_VERSION}"
    printf '\n  Docker Version: %s' "${DOCKER_VERSION}"
    printf '\n  Docker Compose Version: %s' "${DOCKER_COMPOSE_VERSION}"
    printf '\n'
    printf '\nInstallation Information:'
    printf '\n'
    printf '\n  Installation Folder: %s' "${OV_FOLDER}"
    printf '\n  Installation Folder Tree:'
    printf '\n%s' "$(echo "${TREE_OV_DIRECTORY}" | sed -e 's/.//' -e ':a' -e 'N;$!ba' -e 's/\n/\n\t/g')"
    printf '\n'
    printf '\nDocker Running Services:'
    printf '\n'
    printf '\n  %s' "$(echo "${DOCKER_PS}" | sed -e ':a' -e 'N;$!ba' -e 's/\n/\n\t/g')"
    printf '\n'
}

generate_report() {
    collect_basic_information

    REPORT_CREATION_DATE=$(date +"%d-%m-%Y")
    REPORT_CREATION_TIME=$(date +"%H:%M:%S")
    REPORT_NAME="openvidu-report-${REPORT_CREATION_DATE}-$(date +"%H-%M").txt"
    REPORT_OUTPUT="${OV_FOLDER}/${REPORT_NAME}"

    {
        printf "\n  ======================================="
        printf "\n  =         REPORT INFORMATION          ="
        printf "\n  ======================================="
        printf '\n'
        printf '\n  Creation Date: %s' "${REPORT_CREATION_DATE}"
        printf '\n  Creation Time: %s' "${REPORT_CREATION_TIME}"
        printf '\n'
        printf "\n  ======================================="
        printf "\n  =       OPENVIDU INFORMATION          ="
        printf "\n  ======================================="
        printf '\n'
        printf '\n  OpenVidu Edition: Enterprise HA'
        printf '\n  Installation Type: %s' "${OV_TYPE_INSTALLATION}"
        printf '\n  Openvidu Version: %s' "${OV_VERSION}"
        # printf '\n  Openvidu Call Version: %s' "${OV_CALL_VERSION}"
        printf '\n'
        printf "\n  ======================================="
        printf "\n  =         SYSTEM INFORMATION          ="
        printf "\n  ======================================="
        printf '\n'
        printf '\n  Linux Version:'
        printf '\n    - %s' "${LINUX_VERSION}"
        printf '\n  Docker Version: %s' "${DOCKER_VERSION}"
        printf '\n  Docker Compose Version: %s' "${DOCKER_COMPOSE_VERSION}"
        printf '\n'
        printf "\n  ======================================="
        printf "\n  =     INSTALLATION INFORMATION        ="
        printf "\n  ======================================="
        printf '\n'
        printf '\n  Installation Folder: %s' "${OV_FOLDER}"
        printf '\n  Installation Folder Tree:'
        printf '\n%s' "$(echo "${TREE_OV_DIRECTORY}" | sed -e 's/.//' -e ':a' -e 'N;$!ba' -e 's/\n/\n\t/g')"
        printf '\n'
        printf "\n  ======================================="
        printf "\n  =      DOCKER RUNNING SERVICES        ="
        printf "\n  ======================================="
        printf '\n'
        printf '\n  %s' "$(echo "${DOCKER_PS}" | sed -e ':a' -e 'N;$!ba' -e 's/\n/\n\t/g')"
        printf '\n'
        printf "\n  ======================================="
        printf "\n  =        CONFIGURATION FILES          ="
        printf "\n  ======================================="
        printf '\n'
        printf '\n  ================ .env ================='
        printf '\n'
        printf '\n'

        cat < "${OV_FOLDER}/.env" | sed -r -e "s/OPENVIDU_SECRET=.+/OPENVIDU_SECRET=****/" -e "s/OPENVIDU_PRO_LICENSE=.+/OPENVIDU_PRO_LICENSE=****/" -e "s/ELASTICSEARCH_PASSWORD=.+/ELASTICSEARCH_PASSWORD=****/"

        printf '\n'
        printf '\n  ========= docker-compose.yml =========='
        printf '\n'
        printf '\n'

        cat "${OV_FOLDER}/docker-compose.yml"

        printf '\n'
        printf '\n  ==== docker-compose.override.yml ===='
        printf '\n'
        printf '\n'

        if [ -f "${OV_FOLDER}/docker-compose.override.yml" ]; then
            cat < "${OV_FOLDER}/docker-compose.override.yml"
        else
            printf '\n  The docker-compose.override.yml file is not present'
        fi

        printf '\n'
        printf '\n'
        printf "\n  ======================================="
        printf "\n  =                LOGS                 ="
        printf "\n  ======================================="

        for CONTAINER in $CONTAINERS
        do
            printf '\n'
            printf "\n  ---------------------------------------"
            printf "\n  %s" "$CONTAINER"
            printf "\n  ---------------------------------------"
            printf '\n'
            docker logs "$CONTAINER"
            printf "\n  ---------------------------------------"
            printf '\n'
            printf '\n'
        done

        printf "\n  ======================================="
        printf "\n  =       CONTAINER ENVS VARIABLES      ="
        printf "\n  ======================================="

        for CONTAINER in $CONTAINERS
        do
            printf '\n'
            printf "\n  ======================================="
            printf "\n  %s" "$CONTAINER"
            printf "\n  ---------------------------------------"
            printf '\n'
            docker exec "$CONTAINER" env
            printf "\n  ---------------------------------------"
            printf '\n'
            printf '\n'
        done

    } >> "${REPORT_OUTPUT}" 2>&1

    printf "\n  Generation of the report completed with success"
    printf "\n  You can get your report at path '%s'" "${REPORT_OUTPUT}"
    printf "\n"
}

is_external_url() {
    local URL=$1
    if [[ -z "$URL" ]]; then
        return 1
    fi
    if [[ "${URL}" == *"localhost"* ]] || [[ "${URL}" == *"127.0.0.1"* ]] || [[ "${URL}" == *"::1"* ]]; then
        return 1
    else
        return 0
    fi
}

print_env_error() {
    printf "\n  ERROR: You must set the '%s' variable in the .env file" "${1}"
    printf "\n"
}

check_non_empty_parameters() {
    local NON_EMPTY_ENV_VARS=("$@")
    for ENV_VAR_NAME in "${NON_EMPTY_ENV_VARS[@]}" ; do
        ENV_VAR_VALUE=$(grep -v '^#' .env | grep "${ENV_VAR_NAME}" | cut -d '=' -f2)
        if [[ -z "${ENV_VAR_VALUE}" ]]; then
            print_env_error "${ENV_VAR_NAME}"
            exit 1
        fi
    done
}

get_env_var_value() {
    local ENV_VAR_NAME=$1
    local ENV_VAR_VALUE
    ENV_VAR_VALUE=$(grep -v '^#' .env | grep "${ENV_VAR_NAME}" | cut -d '=' -f2)
    echo "${ENV_VAR_VALUE}"
}

check_env_var_is_value() {
    local ENV_VAR_NAME=$1
    local ENV_VAR_VALUE=$2
    local ENV_VAR_VALUE_TO_CHECK
    ENV_VAR_VALUE_TO_CHECK=$(get_env_var_value "${ENV_VAR_NAME}")
    if [[ "${ENV_VAR_VALUE_TO_CHECK}" != "${ENV_VAR_VALUE}" ]]; then
        print_env_error "${ENV_VAR_NAME}"
        exit 1
    fi
}

start_openvidu() {
    export INITIAL_CONFIG_SYNC=true
    if ! docker-compose up --exit-code-from replication-manager replication-manager; then
        printf "\n  ERROR: Openvidu Node failed to start"
        printf "\n"
        unset INITIAL_CONFIG_SYNC
        docker-compose down
        exit 1
    fi
    docker-compose down
    unset INITIAL_CONFIG_SYNC
    docker-compose up -d
}

stop_containers() {
    printf "Stopping containers..."
    for IMAGE in "${IMAGES[@]}"; do
        docker_command_by_container_image "${IMAGE}" "rm -f"
    done
}

usage() {
    printf "Usage: \n\t openvidu [command]"
    printf "\n\nAvailable Commands:"
    printf "\n\tstart\t\t\tStart all services"
    printf "\n\tstop\t\t\tStop all services"
    printf "\n\trestart\t\t\tRestart all stopped and running services"
    printf "\n\tlogs\t\t\tShow openvidu-server logs"
    printf "\n\tupgrade\t\t\tUpgrade to the latest Openvidu version"
    printf "\n\tupgrade [version]\tUpgrade to the specific Openvidu version"
    printf "\n\tversion\t\t\tShow version of Openvidu Server"
    printf "\n\treport\t\t\tGenerate a report with the current status of Openvidu"
    printf "\n\thelp\t\t\tShow help for openvidu command"
    printf "\n"
}

[[ -z "${FOLLOW_OPENVIDU_LOGS}" ]] && FOLLOW_OPENVIDU_LOGS=true

case $1 in

start)
    start_openvidu
    if [[ "${FOLLOW_OPENVIDU_LOGS}" == "true" ]]; then
        # Docker compose logs of openvidu-server and repliation-manager containers
        docker-compose logs -f --tail 10 openvidu-server replication-manager
    fi
;;

stop)
    docker-compose down
    stop_containers
;;

restart)
    docker-compose down
    stop_containers
    start_openvidu
    if [[ "${FOLLOW_OPENVIDU_LOGS}" == "true" ]]; then
        docker-compose logs -f --tail 10 openvidu-server replication-manager
    fi
;;

logs)
    case "${2-}" in
        --follow|-f)
            docker-compose logs -f --tail 10 openvidu-server replication-manager
        ;;

        *)
            docker-compose logs openvidu-server replication-manager
        ;;
    esac
;;

version)
    version_ov
;;

report)
    read -r -p "  You are about to generate a report on the current status of Openvidu, this may take some time. Do you want to continue? [y/N]: " response
    case "$response" in
        [yY][eE][sS]|[yY])
            generate_report
        ;;

        *)
            exit 0
        ;;
    esac
;;

*)
    usage
;;
esac