#!/usr/bin/env bash

BACKUP_DIR=$1

if [ -z "$BACKUP_DIR" ]
  then
    echo "No backup dir"
fi

all_containers=$(docker ps --format "{{.ID}}:{{ .Image }}")

for line in $all_containers
do
    IFS=':' read -a container_details <<< $line

    container_name=${container_details[1]}
    container_id=${container_details[0]}

    case "$container_name" in
    "mariadb")
        db_name=$(docker exec $container_id bash -c 'echo $MYSQL_USER')
        echo Backing up mariadb $db_name
        docker exec $container_id bash -c 'mysqldump -u $MYSQL_USER -p$MYSQL_PASSWORD --all-databases' | pv > $BACKUP_DIR/$db_name.sql
        ;;

    "postgres")
        db_name=$(docker exec $container_id bash -c 'echo $POSTGRES_USER')
        echo Backing up postgres $db_name
        docker exec $container_id bash -c 'PGPASSWORD=$POSTGRES_PASSWORD pg_dumpall -U $POSTGRES_USER' | pv > $BACKUP_DIR/$db_name.sql
        ;;
    "yandex/clickhouse-server")
        # Hardcode for plausible
        tables=$(docker exec $container_id clickhouse-client --query "SELECT name FROM system.tables where database == 'plausible';")
        for table in $tables
        do
            echo Backing up clickhouse table $table
            docker exec $container_id clickhouse-client --query "SELECT * FROM plausible.$table" --format CSVWithNames | pv > $BACKUP_DIR/plausible-$table.csv
        done
        ;;

    esac
done

echo "Setting user permissions..."
chown -R root:root $BACKUP_DIR