#!/bin/bash
## compose: no-hooks

if [ -z "$SERVICE_DATASTORE" ]; then
    echo "This script is meant to be run through 'compose' to work properly." >&2
    exit 1
fi


version=0.1
usage="$exname [-h|--help] [--force|-f] [DBNAME]"
help="
USAGE:

$usage

DESCRIPTION:

Outputs to stdout the odoo zip dump of DBNAME. If DBNAME is not
provided, it'll take the default odoo database from the
${DARKCYAN}postgres-database${NORMAL} relation of current service.

EXAMPLES:

  $exname > dump.zip
  $exname odoo2 > odoo2.zip

"


dbname=
output=
while [ "$1" ]; do
    case "$1" in
        "--help"|"-h")
            print_help >&2
            exit 0
            ;;
        "--force"|"-f")
            force=yes
            ;;
        --*|-*)
            err "Unexpected optional argument '$1'"
            print_usage >&2
            exit 1
            ;;
        *)
            [ -z "$dbname" ] && { dbname=$1 ; shift ; continue ; }
            err "Unexpected positional argument '$1'"
            print_usage >&2
            exit 1
        ;;
    esac
    shift
done


if [ -z "$dbname" ]; then
    dbname=$(relation:get "$SERVICE_NAME:postgres-database" dbname) || {
        err "Couldn't retrieve information of" \
            "${DARKYELLOW}$SERVICE_NAME${NORMAL}-->${DARKCYAN}postgres-database${NORMAL}."
        exit 1
    }
fi

. $CHARM_PATH/lib/common

set -e

ADMIN_PASSWORD=$(odoo:get-admin-password) || {
    err "Couldn't retrieve admin password for $SERVICE_NAME."
    exit 1
}

container_network_ip=$(get_healthy_container_ip_for_service "$SERVICE_NAME" 8069 4) || {
    err "Please ensure that $DARKYELLOW$SERVICE_NAME$NORMAL is running before using '$exname'."
    exit 1
}

container_ip=${container_network_ip##*:}
container_network=${container_network_ip%%:*}

DEFAULT_CURL_IMAGE=${DEFAULT_CURL_IMAGE:-docker.0k.io/curl}


check_output() {
    local chars
    read -n 2 -r chars
    if [ "$chars" != "PK" ]; then
        out=$(cat)
        errmsg=$(echo "$out" | grep "alert-danger")
        errmsg=${errmsg#*>}
        errmsg=${errmsg%%<*}
        if [ -n "$errmsg" ]; then
            errmsg=$(echo "$errmsg" | recode html..utf8)
            die "$errmsg"
        fi
        err "Unexpected output not matching ZIP signature. Dump probably failed."
        exit 1
    fi
    {
        echo -n "$chars"
        cat
    }
}


cmd=(
    docker run --rm --network "$container_network"
        "$DEFAULT_CURL_IMAGE"
        -sS
        -X POST
        -F "master_pwd=${ADMIN_PASSWORD}"
        -F "name=${dbname}"
        -F "backup_format=zip"
        http://${container_ip}:8069/web/database/backup
)

## XXXvlab: contains password, left only for advanced debug
#debug "${cmd[@]}"

set -o pipefail
"${cmd[@]}" | check_output &&
    info "Requested odoo '$dbname' dump and outputted result to stdout."