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

app=$YNH_APP_INSTANCE_NAME
dbname=$app
dbuser=$app
final_path="/opt/$app"
DATADIR="/home/$app"
REPO_PATH="$DATADIR/repositories"
DATA_PATH="$DATADIR/data"

# Detect the system architecture to download the right tarball
# 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
	architecture="i386"
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

#=================================================
# DEFINE ALL COMMON FONCTIONS
#=================================================

create_dir() {
    mkdir -p "$final_path/data"
    mkdir -p "$final_path/custom/conf/auth.d"
    mkdir -p "$DATA_PATH/avatars"
    mkdir -p "$DATA_PATH/attachments"
    mkdir -p "/var/log/$app"
}

config_nginx() {
    if [ "$path_url" != "/" ]
    then
        ynh_replace_string "^#sub_path_only" "" "../conf/nginx.conf"
    fi
    ynh_add_nginx_config
}

config_gogs() {
    ynh_backup_if_checksum_is_different "$final_path/custom/conf/app.ini"
    ynh_backup_if_checksum_is_different "$final_path/custom/conf/auth.d/ldap.conf"

    cp ../conf/app.ini "$final_path/custom/conf"
    cp ../conf/ldap.conf "$final_path/custom/conf/auth.d/ldap.conf"

    if [ "$path_url" = "/" ]
    then
        ynh_replace_string "__URL__" "$domain" "$final_path/custom/conf/app.ini"
    else
        ynh_replace_string "__URL__" "$domain${path_url%/}" "$final_path/custom/conf/app.ini"
    fi

    ynh_replace_string "__REPOS_PATH__" "$REPO_PATH" "$final_path/custom/conf/app.ini"
    ynh_replace_string "__DB_PASSWORD__" "$dbpass" "$final_path/custom/conf/app.ini"
    ynh_replace_string "__DB_USER__" "$dbuser" "$final_path/custom/conf/app.ini"
    ynh_replace_string "__DOMAIN__" "$domain" "$final_path/custom/conf/app.ini"
    ynh_replace_string "__KEY__" "$key" "$final_path/custom/conf/app.ini"
    ynh_replace_string "__DATA_PATH__" "$DATA_PATH" "$final_path/custom/conf/app.ini"
    ynh_replace_string "__PORT__" $port "$final_path/custom/conf/app.ini"
    ynh_replace_string "__APP__" $app "$final_path/custom/conf/app.ini"

    if [[ "$is_public" = '1' ]]
    then
        ynh_replace_string "__PRIVATE_MODE__" "false" "$final_path/custom/conf/app.ini"
    else
        ynh_replace_string "__PRIVATE_MODE__" "true" "$final_path/custom/conf/app.ini"
    fi

    ynh_replace_string "__ADMIN__" "$admin" "$final_path/custom/conf/auth.d/ldap.conf"

    ynh_store_file_checksum "$final_path/custom/conf/app.ini"
    ynh_store_file_checksum "$final_path/custom/conf/auth.d/ldap.conf"
}

set_permission() {
    chown -R $app:$app "$final_path"
    chown -R $app:$app "/home/$app"
    chown -R $app:$app "/var/log/$app"
    chmod u=rwX,g=rX,o= "$final_path"
    chmod u=rwX,g=rX,o= "/home/$app"
    chmod u=rwX,g=rX,o= "/var/log/$app"
}

set_access_settings() {
    if [ "$is_public" = '1' ]
    then
        ynh_app_setting_set $app unprotected_uris "/"
    else
        # For an access to the git server by https in private mode we need to allow the access to theses URL :
        #  - "DOMAIN/PATH/USER/REPOSITORY/info/refs"
        #  - "DOMAIN/PATH/USER/REPOSITORY/git-upload-pack"
        #  - "DOMAIN/PATH/USER/REPOSITORY/git-receive-pack"

        excaped_domain=${domain//'.'/'%.'}
        excaped_domain=${excaped_domain//'-'/'%-'}
        excaped_path=${path_url//'.'/'%.'}
        excaped_path=${excaped_path//'-'/'%-'}
        ynh_app_setting_set $app skipped_regex "$excaped_domain$excaped_path/[%w-.]*/[%w-.]*/git%-receive%-pack,$excaped_domain$excaped_path/[%w-.]*/[%w-.]*/git%-upload%-pack,$excaped_domain$excaped_path/[%w-.]*/[%w-.]*/info/refs"
    fi
}


# Start or restart a service and follow its booting
#
# usage: ynh_check_starting "Line to match" [Log file] [Timeout] [Service name]
#
# | arg: Line to match - The line to find in the log to attest the service have finished to boot.
# | arg: Log file - The log file to watch
# | arg: Service name
# /var/log/$app/$app.log will be used if no other log is defined.
# | arg: Timeout - The maximum time to wait before ending the watching. Defaut 300 seconds.
ynh_check_starting () {
    local line_to_match="$1"
    local service_name="${4:-$app}"
    local app_log="${2:-/var/log/$service_name/$service_name.log}"
    local timeout=${3:-300}

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

    echo "Starting of $service_name" >&2
    systemctl stop $service_name
    local templog="$(mktemp)"
    # Following the starting of the app in its log
    tail -F -n0 "$app_log" > "$templog" &
    # Get the PID of the tail command
    local pid_tail=$!
    systemctl start $service_name

    local i=0
    for i in `seq 1 $timeout`
    do
        # Read the log until the sentence is found, that means the app finished to start. Or run until the timeout
        if grep --quiet "$line_to_match" "$templog"
        then
            echo "The service $service_name has correctly started." >&2
            break
        fi
        echo -n "." >&2
        sleep 1
    done
    if [ $i -eq $timeout ]
    then
        echo "The service $service_name didn't fully started before the timeout." >&2
    fi

    echo ""
    ynh_clean_check_starting
}