from Test import Test
from os.path import isdir, join, isfile
from os import chown, walk, getenv, listdir, mkdir, chmod
from shutil import copytree, rmtree
from traceback import format_exc
from subprocess import run
from time import sleep
from logger import log

class LinuxTest(Test) :

    def __init__(self, name, timeout, tests, distro) :
        super().__init__(name, "linux", timeout, tests)
        self._domains = {
            r"www\.example\.com": getenv("TEST_DOMAIN1"),
            r"auth\.example\.com": getenv("TEST_DOMAIN1"),
            r"app1\.example\.com": getenv("TEST_DOMAIN1_1"),
            r"app2\.example\.com": getenv("TEST_DOMAIN1_2"),
            r"app3\.example\.com": getenv("TEST_DOMAIN1_3")
        }
        if not distro in ["ubuntu", "debian", "fedora", "centos"] :
            raise(Exceptions("unknown distro " + distro))
        self.__distro = distro

    def init(distro) :
        try :
            if not Test.init() :
                return False
            # TODO : find the nginx uid/gid on Docker images
            proc = run("sudo chown -R root:root /tmp/bw-data", shell=True)
            if proc.returncode != 0 :
                raise(Exception("chown failed (autoconf stack)"))
            if isdir("/tmp/linux") :
                rmtree("/tmp/linux")
            mkdir("/tmp/linux")
            chmod("/tmp/linux", 0o0777)
            cmd = "docker run -p 80:80 -p 443:443 --rm --name linux-" + distro + " -d --tmpfs /tmp --tmpfs /run --tmpfs /run/lock -v /sys/fs/cgroup:/sys/fs/cgroup:ro bw-" + distro
            proc = run(cmd, shell=True)
            if proc.returncode != 0 :
                raise(Exception("docker run failed (linux stack)"))
            if distro in ["ubuntu", "debian"] :
                cmd = "apt install -y /opt/\$(ls /opt | grep deb)"
            elif distro in ["centos", "fedora"] :
                cmd = "dnf install -y /opt/\$(ls /opt | grep rpm)"
            proc = LinuxTest.docker_exec(distro, cmd)
            if proc.returncode != 0 :
                raise(Exception("docker exec apt install failed (linux stack)"))
            proc = LinuxTest.docker_exec(distro, "systemctl start bunkerweb")
            if proc.returncode != 0 :
                raise(Exception("docker exec systemctl start failed (linux stack)"))
            cp_dirs = {
                "/tmp/bw-data/letsencrypt": "/etc/letsencrypt",
                "/tmp/bw-data/cache": "/opt/bunkerweb/cache"
            }
            for src, dst in cp_dirs.items() :
                proc = LinuxTest.docker_cp(distro, src, dst)
                if proc.returncode != 0 :
                    raise(Exception("docker cp failed for " + src + " (linux stack)"))
                proc = LinuxTest.docker_exec(distro, "chown -R nginx:nginx " + dst + "/*")
                if proc.returncode != 0 :
                    raise(Exception("docker exec failed for directory " + src + " (linux stack)"))
            # ubuntu : /etc/php/8.1/fpm/pool.d/www.conf / www-data
            # debian : /etc/php/7.4/fpm/pool.d/www.conf / www-data
            # fedora : /etc/php-fpm.d/www.conf / apache
            # centos : /etc/php-fpm.d/www.conf / apache
            if self.__distro in ["ubuntu", "debian"] :
                LinuxTest.docker_exec(distro, "DEBIAN_FRONTEND=noninteractive apt-get install -y php-fpm")
            elif self.__distro in ["centos", "fedora"] :
                LinuxTest.docker_exec(distro, "dnf install -y php-fpm")
            sleep(60)
        except :
            log("LINUX", "❌", "exception while running LinuxTest.init()\n" + format_exc())
            return False
        return True

    def end(distro) :
        ret = True
        try :
            if not Test.end() :
                return False
            proc = run("docker kill linux-" + distro, shell=True)
            if proc.returncode != 0 :
                ret = False
        except :
            log("LINUX", "❌", "exception while running LinuxTest.end()\n" + format_exc())
            return False
        return ret

    def _setup_test(self) :
        try :
            super()._setup_test()
            test = "/tmp/tests/" + self._name
            for ex_domain, test_domain in self._domains.items() :
                Test.replace_in_files(test, ex_domain, test_domain)
                Test.rename(test, ex_domain, test_domain)
            Test.replace_in_files(test, "example.com", getenv("ROOT_DOMAIN"))
            setup = test + "/setup-linux.sh"
            if isfile(setup) :
                proc = LinuxTest.docker_cp(self.__distro, test, "/opt/" + self._name)
                if proc.returncode != 0 :
                    raise(Exception("docker cp failed (test)"))
                proc = LinuxTest.docker_exec(self.__distro, "cd /opt/" + self._name + " && ./setup-linux.sh")
                if proc.returncode != 0 :
                    raise(Exception("docker exec setup failed (test)"))
            proc = LinuxTest.docker_exec(self.__distro, "cp /opt/" + self._name + "/variables.env /opt/bunkerweb")
            if proc.returncode != 0 :
                raise(Exception("docker exec cp variables.env failed (test)"))
            proc = LinuxTest.docker_exec(self.__distro, "systemctl restart bunkerweb")
            if proc.returncode != 0 :
                raise(Exception("docker exec systemctl restart failed (linux stack)"))
        except :
            log("LINUX", "❌", "exception while running LinuxTest._setup_test()\n" + format_exc())
            self._cleanup_test()
            return False
        return True

    def _debug_fail(self) :
        LinuxTest.docker_exec(self.__distro, "cat /var/log/nginx/access.log ; cat /var/log/nginx/error.log ; journalctl -u bunkerweb --no-pager")
    
    def docker_exec(distro, cmd_linux) :
        return run("docker exec linux-" + distro + " /bin/bash -c \"" + cmd_linux + "\"", shell=True)

    def docker_cp(distro, src, dst) :
        return run("sudo docker cp " + src + " linux-" + distro + ":" + dst, shell=True)