#=================================================
# SET ALL CONSTANTS
#=================================================

app=$YNH_APP_INSTANCE_NAME
config_path="/etc/$app"
final_path="/opt/$app"

#=================================================
# DETECT THE SYSTEM ARCHITECTURE
#=================================================
# Detect the system architecture to download the right file
# NOTE: `uname -m` is more accurate and universal than `arch`
# See https://en.wikipedia.org/wiki/Uname
if [ -n "$(uname -m | grep 64)" ]; then
	architecture="x86-64"
elif [ -n "$(uname -m | grep 86)" ]; then
	ynh_die "Gitlab is not compatible with x86 architecture"
elif [ -n "$(uname -m | grep arm)" ]; then
	architecture="arm"
else
	ynh_die "Unable to detect your achitecture, please open a bug describing \
        your hardware and the result of the command \"uname -m\"." 1
fi

#=================================================
# CREATE FOLDERS
#=================================================
create_dir() {
	mkdir -p "$config_path"
}

#=================================================
# CONFIGURATION FILE FOR GITLAB
#=================================================
config_gitlab() {
	ynh_print_info "Configuring Gitlab..."

	create_dir

	gitlab_conf_path="$config_path/gitlab.rb"

	ynh_backup_if_checksum_is_different $gitlab_conf_path

	# Gitlab configuration
	cp -f ../conf/gitlab.rb $gitlab_conf_path

	ynh_replace_string "__GENERATED_EXTERNAL_URL__" "https://$domain${path_url%/}" $gitlab_conf_path
	ynh_replace_string "__PORT__" "$port" $gitlab_conf_path
	ynh_replace_string "__PORTUNICORN__" "$portUnicorn" $gitlab_conf_path

	ynh_store_file_checksum $gitlab_conf_path
}

#=================================================
# REMOVE THE CONFIGURATION FILE FOR GITLAB
#=================================================
remove_config_gitlab() {
	ynh_print_info "Removing the configuration file..."

	ynh_secure_remove "$config_path/gitlab.rb"
}

#=================================================
# UPDATE SOURCES FILES
#=================================================
update_src_version() {
	source ./upgrade.d/upgrade.last.sh
	cp ../conf/arm.src.default ../conf/arm.src
	ynh_replace_string "__VERSION__" "$gitlab_version" "../conf/arm.src"
	ynh_replace_string "__SHA256_SUM__" "$gitlab_arm_source_sha256" "../conf/arm.src"

	cp ../conf/x86-64.src.default ../conf/x86-64.src
	ynh_replace_string "__VERSION__" "$gitlab_version" "../conf/x86-64.src"
	ynh_replace_string "__SHA256_SUM__" "$gitlab_x86_64_source_sha256" "../conf/x86-64.src"
}

#=================================================
# INSTALL GITLAB
#=================================================
# This function is inspired by the ynh_setup_source function, adapted to deal with .deb files
setup_source() {
	local src_id=${1:-app} # If the argument is not given, source_id equals "app"

	update_src_version # Update source file

	# Load value from configuration file (see above for a small doc about this file
	# format)
	local src_url=$(grep 'SOURCE_URL=' "$YNH_CWD/../conf/${src_id}.src" | cut -d= -f2-)
	local src_sum=$(grep 'SOURCE_SUM=' "$YNH_CWD/../conf/${src_id}.src" | cut -d= -f2-)
	local src_sumprg=$(grep 'SOURCE_SUM_PRG=' "$YNH_CWD/../conf/${src_id}.src" | cut -d= -f2-)
	local src_format=$(grep 'SOURCE_FORMAT=' "$YNH_CWD/../conf/${src_id}.src" | cut -d= -f2-)
	local src_extract=$(grep 'SOURCE_EXTRACT=' "$YNH_CWD/../conf/${src_id}.src" | cut -d= -f2-)
	local src_in_subdir=$(grep 'SOURCE_IN_SUBDIR=' "$YNH_CWD/../conf/${src_id}.src" | cut -d= -f2-)
	local src_filename=$(grep 'SOURCE_FILENAME=' "$YNH_CWD/../conf/${src_id}.src" | cut -d= -f2-)

	# Default value
	src_sumprg=${src_sumprg:-sha256sum}
	src_in_subdir=${src_in_subdir:-true}
	src_format=${src_format:-tar.gz}
	src_format=$(echo "$src_format" | tr '[:upper:]' '[:lower:]')
	src_extract=${src_extract:-true}
	if [ "$src_filename" = "" ]; then
		src_filename="${src_id}.${src_format}"
	fi
	local local_src="/opt/yunohost-apps-src/${YNH_APP_ID}/${src_filename}"

	ynh_print_info "Downloading Gitlab files..."

	if test -e "$local_src"; then # Use the local source file if it is present
		cp $local_src $src_filename
	else # If not, download the source
		wget -q --show-progress -O $src_filename $src_url
	fi

	# Check the control sum
	echo "${src_sum} ${src_filename}" | ${src_sumprg} -c --status ||
		ynh_die "Corrupt source"

	ynh_print_info "Installing Gitlab..."
	#Fix for the CI
	if sudo grep -qa container=lxc /proc/1/environ; then
		dpkg -i $src_filename || true # This command will fail in lxc env
		sed -i 's/command \"cat \/etc\/sysctl.conf \/etc\/sysctl.d\/\*.conf  | sysctl -e -p -\"/command \"cat \/etc\/sysctl.conf\"/g' $final_path/embedded/cookbooks/package/resources/sysctl.rb
		dpkg --configure gitlab-ce || true
	else
		dpkg -i $src_filename || true
	fi
}

#=================================================
# WAIT
#=================================================
# This function is inspired by the ynh_systemd_action function
waiting_to_start() {

	ynh_print_info "Waiting for a response from Gitlab..."

	log_path="/var/log/gitlab/unicorn/current"

	if [ ! -f "$log_path" ]; then
		return 0
	fi

	line_match_new="adopted new unicorn master"
	line_match_existing="adopted existing unicorn master"

	clean_check_starting() {
		# Stop the execution of tail
		kill -s 15 $pid_tail 2>&1
		ynh_secure_remove "$templog" 2>&1
	}

	# Following the starting of the app in its log
	local templog="$(mktemp)"
	tail -F -n1 "$log_path" >"$templog" &
	# get the PID of the tail command
	local pid_tail=$!

	for i in $(seq 1 1000); do
		if grep --quiet "${line_match_new}" $templog || grep --quiet "${line_match_existing}" $templog; then
			echo "Gitlab has correctly started." >&2
			break
		fi
		sleep 1
		echo -n "." >&2
	done

	clean_check_starting
}