#!/bin/sh -e
#
#  Copyright (C) 2015 ScyllaDB

if [ "`id -u`" -ne 0 ]; then
    echo "Requires root permission."
    exit 1
fi

print_usage() {
    echo "scylla_setup --disks /dev/hda,/dev/hdb... --nic eth0 --ntp-domain centos --ami --no-enable-service --no-selinux-setup --no-bootparam-setup --no-ntp-setup --no-raid-setup --no-coredump-setup --no-sysconfig-setup"
    echo "  --disks			specify disks for RAID"
    echo "  --nic				specify NIC"
    echo "  --ntp-domain			specify NTP domain"
    echo "  --ami				setup AMI instance"
    echo "  --no-enable-service		skip enabling service"
    echo "  --no-selinux-setup		skip selinux setup"
    echo "  --no-bootparam-setup		skip bootparam setup"
    echo "  --no-ntp-setup		skip ntp setup"
    echo "  --no-raid-setup		skip raid setup"
    echo "  --no-coredump-setup		skip coredump setup"
    echo "  --no-sysconfig-setup		skip sysconfig setup"
    exit 1
}

interactive_ask_service() {
    echo $1
    while true; do
        echo -n "yes/no: "
        read ans
        case $ans in
            "y" | "yes")
                return 1
                ;;
            "n" | "no")
                return 0
                ;;
        esac
    done
}

AMI=0
ENABLE_SERVICE=1
SELINUX_SETUP=1
BOOTPARAM_SETUP=1
NTP_SETUP=1
RAID_SETUP=1
COREDUMP_SETUP=1
SYSCONFIG_SETUP=1

if [ $# -ne 0 ]; then
    INTERACTIVE=0
else
    INTERACTIVE=1
fi

while [ $# -gt 0 ]; do
    case "$1" in
        "--disks")
            DISKS="$2"
            shift 2
            ;;
        "--nic")
            NIC="$2"
            shift 2
            ;;
        "--ntp-domain")
            NTP_DOMAIN="$2"
            shift 2
            ;;
        "--ami")
            AMI=1
            shift 1
            ;;
        "--no-enable-service")
            ENABLE_SERVICE=0
            shift 1
            ;;
        "--no-selinux-setup")
            SELINUX_SETUP=0
            shift 1
            ;;
        "--no-bootparam-setup")
            BOOTPARAM_SETUP=0
            shift 1
            ;;
        "--no-ntp-setup")
            NTP_SETUP=0
            shift 1
            ;;
        "--no-raid-setup")
            RAID_SETUP=0
            shift 1
            ;;
        "--no-coredump-setup")
            COREDUMP_SETUP=0
            shift 1
            ;;
        "--no-sysconfig-setup")
            SYSCONFIG_SETUP=0
            shift 1
            ;;
        "-h" | "--help")
            print_usage
            shift 1
            ;;
    esac
done

if [ $INTERACTIVE -eq 0 ] && [ $RAID_SETUP -eq 1 ] && [ "$DISKS" = "" ]; then
    print_usage
fi
if [ $INTERACTIVE -eq 0 ] && [ $SYSCONFIG_SETUP -eq 1 ] && [ "$NIC" = "" ]; then
    print_usage
fi

. /etc/os-release

if [ $INTERACTIVE -eq 1 ]; then
    interactive_ask_service "Do you want to enable ScyllaDB services?" &&:
    ENABLE_SERVICE=$?
fi
if [ $ENABLE_SERVICE -eq 1 ]; then
    if [ "$ID" = "fedora" ] || [ "$ID" = "centos" ]; then
        systemctl enable scylla-io-setup.service
        systemctl enable scylla-server.service
        systemctl enable scylla-jmx.service
    fi
fi

if [ $INTERACTIVE -eq 1 ]; then
    interactive_ask_service "Do you want to disable SELinux?" &&:
    SELINUX_SETUP=$?
fi
if [ $SELINUX_SETUP -eq 1 ]; then
    /usr/lib/scylla/scylla_selinux_setup
fi

if [ $INTERACTIVE -eq 1 ]; then
    interactive_ask_service "Do you want to setup bootloader options?" &&:
    BOOTPARAM_SETUP=$?
fi
if [ $BOOTPARAM_SETUP -eq 1 ]; then
    /usr/lib/scylla/scylla_bootparam_setup
fi

if [ $INTERACTIVE -eq 1 ]; then
    interactive_ask_service "Do you want to setup NTP?" &&:
    NTP_SETUP=$?
fi
if [ $NTP_SETUP -eq 1 ]; then
    if [ "$NTP_DOMAIN" != "" ]; then
        /usr/lib/scylla/scylla_ntp_setup --subdomain $NTP_DOMAIN
    else
        /usr/lib/scylla/scylla_ntp_setup
    fi
fi

if [ $INTERACTIVE -eq 1 ]; then
    interactive_ask_service "Do you want to setup RAID?" &&:
    RAID_SETUP=$?
    if [ $RAID_SETUP -eq 1 ]; then
        echo "Please select disks from following list: "
        while true; do
            lsblk -d -i -n -p -r|awk '{print $1}'|sed -e ':loop;N;$!b loop;s/\n/ /g'
            echo "type 'done' to finish selection. selected: $DISKS"
            echo -n "> "
            read dsk
            if [ "$dsk" = "done" ]; then
                break
            fi
            if [ -e $dsk ]; then
                if [ "$DISKS" = "" ]; then
                    DISKS=$dsk
                else
                    DISKS="$DISKS,$dsk"
                fi
            else
                echo "$dsk not found"
            fi
        done
    fi
fi
if [ $RAID_SETUP -eq 1 ]; then
    /usr/lib/scylla/scylla_raid_setup --disks $DISKS --update-fstab
fi

if [ $INTERACTIVE -eq 1 ]; then
    interactive_ask_service "Do you want to setup coredump?" &&:
    COREDUMP_SETUP=$?
fi
if [ $COREDUMP_SETUP -eq 1 ]; then
    if [ "$DISKS" != "" ]; then
        /usr/lib/scylla/scylla_coredump_setup --dump-to-raiddir
    else
        /usr/lib/scylla/scylla_coredump_setup
    fi
fi

if [ $INTERACTIVE -eq 1 ]; then
    interactive_ask_service "Do you want to setup sysconfig?" &&:
    SYSCONFIG_SETUP=$?
    if [ $SYSCONFIG_SETUP -eq 1 ]; then
        echo "Please select NIC from following list: "
        while true; do
            ls /sys/class/net
            echo -n "> "
            read NIC
            if [ -e /sys/class/net/$NIC ]; then
                break
            fi
        done
    fi
fi
if [ $SYSCONFIG_SETUP -eq 1 ]; then
    /usr/lib/scylla/scylla_sysconfig_setup --nic $NIC
fi