#!/bin/bash
############################################################
# Decription: this script manage docker image 
#             file with an AWX inventory
#             
# Author: Gilles Mouchet (gilles.mouchet@gmail.com)
# Creation Date: 28.06.2025
# Version: 1.0
#
# Usage: ./docker.sh --help
# Changelog:
#    V1.0 - 28.06.2025 - GMo
#      Added
#      - Creation of script from scratch
#
############################################################ 

version="1.0"

# with set -e, as soon as a command returns an exit code other than 0, 
# the script stops immediately.
set -e
_UID=$(id -u)
_GID=$(id -g)
############################################################
# functions
############################################################
# function usage
usage() {
    cat << EOF
Usage: ./$(basename "$0") options
Manage docker image
Options:
    build                   build docker image
    build-no-cache          build an image from scratch, without using the cache from previous steps.
    build-multi             build a multi-platform image (amd64, arm64)
    build-multi-no-cache    build a multi-platform image from scratch , without using the cache from previous steps.
    start                   start the stack
    stop                    stop the stack and delete the container
    restart                 stop and start stack
    bash                    open the  ${COMPOSE_PROJECT_NAME}-php-fpm-1 container bash
    bash-root               open the  ${COMPOSE_PROJECT_NAME}-php-fpm-1 container bash with root user
    logs                    tail logs from ${COMPOSE_PROJECT_NAME}-php-fpm-1 -f
    push                    push image php-fpm on docker registry
    down                    stop and delete the container
    help|-h|--help          display this help
    version|-v|--version    display script version
EOF
}
# read the varoables
export $(grep -v '^#' .env | xargs)

# check param exist
if [ -z "$1" ]; then
    usage
    exit
fi

# check if certs folder exite in src
if [ ! -d "./src/certs" ]; then
    mkdir ./src/certs
fi


while test $# -gt 0
do
    case "$1" in
        start) 
            sudo chown -R $_UID:$_GID ./certs/
            # The env before the docker command is there to assign rights in case different 
            # users are called upon to work on this project. We comment it for documentation purposes.
            # env UID=${_UID} GID=${_GID} docker compose up -d
            docker compose up -d
        ;;
        restart)
            sudo chown -R $_UID:$_GID ./certs/
            docker compose down --remove-orphans
            docker compose up -d;
        ;;
        stop)
            docker compose stop
        ;;
        bash)
            docker exec -it ${COMPOSE_PROJECT_NAME}-php-fpm-1 /bin/sh
        ;;
        bash-root)
            docker exec --user root -it ${COMPOSE_PROJECT_NAME}-php-fpm-1 /bin/sh
        ;;
	    logs)
            docker logs ${COMPOSE_PROJECT_NAME}-php-fpm-1 -f
        ;;
        build)
        # build image in local 
            sudo chown -R $_UID:$_GID ./src/
            docker compose build --pull
            docker compose up -d;
            docker exec --user root ${COMPOSE_PROJECT_NAME}-php-fpm-1 /bin/sh -c "cd /var/www/html; composer require elasticsearch/elasticsearch"
            # not needed. We comment it for documentation purposes.
            #sleep 5 # wait mysql container up
            #docker exec -it wwwgmo-mysql /bin/bash -c "mysql -u root --password=password -e \
            #    \"CREATE USER IF NOT EXISTS 'xmaroot'@'%' IDENTIFIED BY 'sqlAdmin'; \
            #    GRANT ALL PRIVILEGES ON *.* TO 'xmaroot'@'%'; \
            #    flush privileges;\""
            docker compose stop
        ;;
        build-no-cache)
        # build image in local 
            sudo chown -R $_UID:$_GID ./src/
            docker compose build --pull --no-cache
            docker compose up -d;
            docker exec --user root ${COMPOSE_PROJECT_NAME}-php-fpm-1 /bin/sh -c "cd /var/www/html; composer require elasticsearch/elasticsearch"
            docker compose stop
        ;;
        build-multi-no-cache)
        # build image multi platform linux/amd64 and linux/arm64
        #
        # This operation may take some time (env. 15 min). Please be patient.
        #
            #echo "${DOCKER_USER}/wwwgmo-php-fpm:${DOCKER_IMAGE_VERSION}"
            #cp ./certs/ca.pem ./src/certs/.
            sudo chown -R $_UID:$_GID ./src/
            # load images needed to buil docker iomage for multi platform 
            if [ "$(docker images -q moby/buildkit)" == "" ]; then
                docker buildx create --use --name gmobuilder
                docker buildx inspect gmobuilder --bootstrap
            fi 
            # login to docker hub
            docker login -u="${DOCKER_USER}" -p="${DOCKER_PASS}"
            # builds image for linux/amd64 and linux/arm64
            docker buildx build --no-cache --platform linux/amd64,linux/arm64 -t "${DOCKER_USER}/wwwgmo-php-fpm:${DOCKER_IMAGE_VERSION}" --push -f ./docker/php-fpm/Dockerfile .
            # start stack
            docker compose up -d
            # install elasticsearch client for PHP
 	        docker exec --user root ${COMPOSE_PROJECT_NAME}-php-fpm-1 /bin/sh -c "cd /var/www/html; composer require elasticsearch/elasticsearch"
            # stop stack
            docker compose stop
            # logout from docker hub
            docker logout
            # cleanup container, image and instance to create multi platform image
            docker stop buildx_buildkit_gmobuilder0
            docker container rm buildx_buildkit_gmobuilder0
            docker rmi moby/buildkit:buildx-stable-1 --force
            docker buildx rm --all-inactive --force
	    ;;
        build-multi)
        # build image multi platform linux/amd64 and linux/arm64
        #
        # This operation may take some time (env. 15 min). Please be patient.
        #
            #echo "${DOCKER_USER}/wwwgmo-php-fpm:${DOCKER_IMAGE_VERSION}"
            #cp ./certs/ca.pem ./src/certs/.
            sudo chown -R $_UID:$_GID ./src/
            # load images needed to buil docker iomage for multi platform 
            if [ "$(docker images -q moby/buildkit)" == "" ]; then
                docker buildx create --use --name gmobuilder
                docker buildx inspect gmobuilder --bootstrap
            fi 
            # login to docker hub
            docker login -u="${DOCKER_USER}" -p="${DOCKER_PASS}"
            # builds image for linux/amd64 and linux/arm64
            docker buildx build --platform linux/amd64,linux/arm64 -t "${DOCKER_USER}/wwwgmo-php-fpm:${DOCKER_IMAGE_VERSION}" --push -f ./docker/php-fpm/Dockerfile .
            # start stack
            docker compose up -d
            # install elasticsearch client for PHP
 	        docker exec --user root ${COMPOSE_PROJECT_NAME}-php-fpm-1 /bin/sh -c "cd /var/www/html; composer require elasticsearch/elasticsearch"
            # stop stack
            docker compose stop
            # logout from docker hub
            docker logout
            # cleanup container, image and instance to create multi platform image
            docker stop buildx_buildkit_gmobuilder0
            docker container rm buildx_buildkit_gmobuilder0
            docker rmi moby/buildkit:buildx-stable-1 --force
            docker buildx rm --all-inactive --force
	    ;;
        push)
            docker login -u="${DOCKER_USER}" -p="${DOCKER_PASS}"
            docker image push ${DOCKER_IMAGE}:${DOCKER_IMAGE_VERSION}
            docker logout
        ;;
        down)
            docker compose down --remove-orphans
        ;;
        version|-v|--version)
            cat << EOF
$(basename "$0") v$version (c) 1990 - $(date +%Y) by Gilles Mouchet
Non-Commercial Use License – See LICENSE for details
EOF
            exit
        ;;
        *|help|-h|--help) 
            usage
            exit
        ;;
    esac
    shift
done
exit 0