#
# Copyright (C) 2016 Intel Corporation
#
# SPDX-License-Identifier: MIT
#

import os
import sys
import signal
import time
import glob
import subprocess
from collections import defaultdict

from .ssh import OESSHTarget
from oeqa.utils.qemurunner import QemuRunner
from oeqa.utils.dump import MonitorDumper
from oeqa.utils.dump import TargetDumper

supported_fstypes = ['ext3', 'ext4', 'cpio.gz', 'wic']

class OEQemuTarget(OESSHTarget):
    def __init__(self, logger, server_ip, timeout=300, user='root',
            port=None, machine='', rootfs='', kernel='', kvm=False, slirp=False,
            dump_dir='', dump_host_cmds='', display='', bootlog='',
            tmpdir='', dir_image='', boottime=60, serial_ports=2,
            boot_patterns = defaultdict(str), ovmf=False, tmpfsdir=None, **kwargs):

        super(OEQemuTarget, self).__init__(logger, None, server_ip, timeout,
                user, port)

        self.server_ip = server_ip
        self.server_port = 0
        self.machine = machine
        self.rootfs = rootfs
        self.kernel = kernel
        self.kvm = kvm
        self.ovmf = ovmf
        self.use_slirp = slirp
        self.boot_patterns = boot_patterns
        self.dump_dir = dump_dir
        self.bootlog = bootlog

        self.runner = QemuRunner(machine=machine, rootfs=rootfs, tmpdir=tmpdir,
                                 deploy_dir_image=dir_image, display=display,
                                 logfile=bootlog, boottime=boottime,
                                 use_kvm=kvm, use_slirp=slirp, dump_dir=dump_dir,
                                 dump_host_cmds=dump_host_cmds, logger=logger,
                                 serial_ports=serial_ports, boot_patterns = boot_patterns, 
                                 use_ovmf=ovmf, tmpfsdir=tmpfsdir)
        dump_monitor_cmds = kwargs.get("testimage_dump_monitor")
        self.monitor_dumper = MonitorDumper(dump_monitor_cmds, dump_dir, self.runner)
        if self.monitor_dumper:
            self.monitor_dumper.create_dir("qmp")

        dump_target_cmds = kwargs.get("testimage_dump_target")
        self.target_dumper = TargetDumper(dump_target_cmds, dump_dir, self.runner)
        self.target_dumper.create_dir("qemu")

    def start(self, params=None, extra_bootparams=None, runqemuparams=''):
        if self.use_slirp and not self.server_ip:
            self.logger.error("Could not start qemu with slirp without server ip - provide 'TEST_SERVER_IP'")
            raise RuntimeError("FAILED to start qemu - check the task log and the boot log")
        if self.runner.start(params, extra_bootparams=extra_bootparams, runqemuparams=runqemuparams):
            self.ip = self.runner.ip
            if self.use_slirp:
                target_ip_port = self.runner.ip.split(':')
                if len(target_ip_port) == 2:
                    target_ip = target_ip_port[0]
                    port = target_ip_port[1]
                    self.ip = target_ip
                    self.ssh = self.ssh + ['-p', port]
                    self.scp = self.scp + ['-P', port]
                else:
                    self.logger.error("Could not get host machine port to connect qemu with slirp, ssh will not be "
                                      "able to connect to qemu with slirp")
            if self.runner.server_ip:
                self.server_ip = self.runner.server_ip
        else:
            self.stop()
            # Display the first 20 lines of top and
            # last 20 lines of the bootlog when the
            # target is not being booted up.
            topfile = glob.glob(self.dump_dir + "/*_qemu/host_*_top")
            msg = "\n\n===== start: snippet =====\n\n"
            for f in topfile:
                msg += "file: %s\n\n" % f
                with open(f) as tf:
                    for x in range(20):
                        msg += next(tf)
            msg += "\n\n===== end: snippet =====\n\n"
            blcmd = ["tail", "-20", self.bootlog]
            msg += "===== start: snippet =====\n\n"
            try:
                out = subprocess.check_output(blcmd, stderr=subprocess.STDOUT, timeout=1).decode('utf-8')
                msg += "file: %s\n\n" % self.bootlog
                msg += out
            except (subprocess.CalledProcessError, subprocess.TimeoutExpired, FileNotFoundError) as err:
                msg += "Error running command: %s\n%s\n" % (blcmd, err)
            msg += "\n\n===== end: snippet =====\n"

            raise RuntimeError("FAILED to start qemu - check the task log and the boot log %s" % (msg))

    def stop(self):
        self.runner.stop()