#!/bin/bash

DB_EXISTS=""

max_attempts=120
function wait_db(){
    db_host=$1
    db_port=$2
    attempt=0
    echo "Wait until $max_attempts seconds for MySQL mano Server ${db_host}:${db_port} "
    while ! mysqladmin ping -h"$db_host" -P"$db_port" --silent; do
        #wait 120 sec
        if [ $attempt -ge $max_attempts ]; then
            echo
            echo "Can not connect to database ${db_host}:${db_port} during $max_attempts sec"
            return 1
        fi
        attempt=$[$attempt+1]
        echo -n "."
        sleep 1
    done
    return 0
}

function is_db_created() {
    db_host=$1
    db_port=$2
    db_user=$3
    db_pswd=$4
    db_name=$5

    if mysqlshow -h"$db_host" -P"$db_port" -u"$db_user" -p"$db_pswd" | grep -v Wildcard | grep -q $db_name; then
        echo "DB $db_name exists"
        return 0
    else
        echo "DB $db_name does not exist"
        return 1
    fi
}

if [[ $OSMUI_SQL_DATABASE_URI == *'mysql'* ]]; then
    DB_HOST=$(echo $OSMUI_SQL_DATABASE_URI | sed -r 's|^.+://.+:.+@(.+):.*$|\1|')
    DB_PORT=$(echo $OSMUI_SQL_DATABASE_URI | sed -r 's|^.+://.*:([0-9]+).*$|\1|')
    DB_USER=$(echo $OSMUI_SQL_DATABASE_URI | sed -r 's|^.+://(.+):.+@.+$|\1|')
    DB_PASSWORD=$(echo $OSMUI_SQL_DATABASE_URI | sed -r 's|^.+://.+:(.+)@.*$|\1|')
    DB_NAME=$(echo $OSMUI_SQL_DATABASE_URI | sed -r 's|^.+://.+:.+@.+:.*/(\w+)(\?.*)?$|\1|')
    
    wait_db "$DB_HOST" "$DB_PORT" || exit 1

    is_db_created "$DB_HOST" "$DB_PORT" "$DB_USER" "$DB_PASSWORD" "$DB_NAME" && DB_EXISTS="Y"

    if [ -z $DB_EXISTS ]; then
        mysql -h"$DB_HOST" -P"$DB_PORT" -u"$DB_USER" -p"$DB_PASSWORD" --default_character_set utf8 -e "CREATE DATABASE $DB_NAME"
    fi
fi

python manage.py makemigrations authosm
python manage.py migrate

supervisord -n
