#!/usr/bin/env python3
# coding: utf-8
from __future__ import print_function, unicode_literals

import os
import random
import re
import shutil
import socket
import subprocess as sp
import sys
import tempfile
import threading
import time
import unittest
from argparse import Namespace

import jinja2

from copyparty.__init__ import MACOS, WINDOWS, E

J2_ENV = jinja2.Environment(loader=jinja2.BaseLoader)  # type: ignore
J2_FILES = J2_ENV.from_string("{{ files|join('\n') }}\nJ2EOT")


def nah(*a, **ka):
    return False


def eprint(*a, **ka):
    ka["file"] = sys.stderr
    print(*a, **ka)
    sys.stderr.flush()


from copyparty.__main__ import init_E
from copyparty.broker_thr import BrokerThr
from copyparty.ico import Ico
from copyparty.u2idx import U2idx
from copyparty.up2k import Up2k
from copyparty.util import FHC, CachedDict, Garda, Unrecv

init_E(E)


def randbytes(n):
    return random.getrandbits(n * 8).to_bytes(n, "little")


def runcmd(argv):
    p = sp.Popen(argv, stdout=sp.PIPE, stderr=sp.PIPE)
    stdout, stderr = p.communicate()
    stdout = stdout.decode("utf-8")
    stderr = stderr.decode("utf-8")
    return [p.returncode, stdout, stderr]


def chkcmd(argv):
    ok, sout, serr = runcmd(argv)
    if ok != 0:
        raise Exception(serr)

    return sout, serr


def get_ramdisk():
    def subdir(top):
        for d in os.listdir(top):
            if not d.startswith("cptd-"):
                continue
            p = os.path.join(top, d)
            st = os.stat(p)
            if time.time() - st.st_mtime > 300:
                shutil.rmtree(p)
        ret = os.path.join(top, "cptd-{}".format(os.getpid()))
        shutil.rmtree(ret, True)
        os.mkdir(ret)
        return ret

    for vol in ["/dev/shm", "/Volumes/cptd"]:  # nosec (singleton test)
        if os.path.exists(vol):
            return subdir(vol)

    if os.path.exists("/Volumes"):
        # hdiutil eject /Volumes/cptd/
        devname, _ = chkcmd("hdiutil attach -nomount ram://131072".split())
        devname = devname.strip()
        print("devname: [{}]".format(devname))
        for _ in range(10):
            try:
                _, _ = chkcmd(["diskutil", "eraseVolume", "HFS+", "cptd", devname])
                with open("/Volumes/cptd/.metadata_never_index", "wb") as f:
                    f.write(b"orz")

                try:
                    shutil.rmtree("/Volumes/cptd/.fseventsd")
                except:
                    pass

                return subdir("/Volumes/cptd")
            except Exception as ex:
                print(repr(ex))
                time.sleep(0.25)

        raise Exception("ramdisk creation failed")

    ret = os.path.join(tempfile.gettempdir(), "copyparty-test")
    if not os.path.isdir(ret):
        os.mkdir(ret)

    return subdir(ret)


def pfind2ls(xml):
    return [x.split("<", 1)[0] for x in xml.split("<D:href>")[1:]]


class TC(unittest.TestCase):
    def __init__(self, *a, **ka):
        super(TC, self).__init__(*a, **ka)

    def assertStart(self, member, container, msg=None):
        if not container.startswith(member):
            standardMsg = "%s not found in %s" % (member, container)
            self.fail(self._formatMessage(msg, standardMsg))


class Cfg(Namespace):
    def __init__(self, a=None, v=None, c=None, **ka0):
        ka = {}

        ex = "chpw daw dav_auth dav_mac dav_rt e2d e2ds e2dsa e2t e2ts e2tsr e2v e2vu e2vp early_ban ed emp exp force_js getmod grid gsel hardlink ih ihead magic hardlink_only nid nih no_acode no_athumb no_bauth no_clone no_cp no_dav no_db_ip no_del no_dirsz no_dupe no_lifetime no_logues no_mv no_pipe no_poll no_readme no_robots no_sb_md no_sb_lg no_scandir no_tarcmp no_thumb no_vthumb no_zip nrand nsort nw og og_no_head og_s_title ohead q rand re_dirsz rss smb srch_dbg srch_excl stats uqe vague_403 vc ver write_uplog xdev xlink xvol zs"
        ka.update(**{k: False for k in ex.split()})

        ex = "dav_inf dedup dotpart dotsrch hook_v no_dhash no_fastboot no_fpool no_htp no_rescan no_sendfile no_ses no_snap no_up_list no_voldump re_dhash plain_ip"
        ka.update(**{k: True for k in ex.split()})

        ex = "ah_cli ah_gen css_browser hist ipu js_browser js_other mime mimes no_forget no_hash no_idx nonsus_urls og_tpl og_ua"
        ka.update(**{k: None for k in ex.split()})

        ex = "hash_mt hsortn safe_dedup srch_time u2abort u2j u2sz"
        ka.update(**{k: 1 for k in ex.split()})

        ex = "au_vol dl_list mtab_age reg_cap s_thead s_tbody th_convt ups_who zip_who"
        ka.update(**{k: 9 for k in ex.split()})

        ex = "db_act k304 loris no304 re_maxage rproxy rsp_jtr rsp_slp s_wr_slp snap_wri theme themes turbo"
        ka.update(**{k: 0 for k in ex.split()})

        ex = "ah_alg bname chpw_db doctitle df exit favico idp_h_usr ipa html_head lg_sba lg_sbf log_fk md_sba md_sbf name og_desc og_site og_th og_title og_title_a og_title_v og_title_i shr tcolor textfiles unlist vname xff_src R RS SR"
        ka.update(**{k: "" for k in ex.split()})

        ex = "ban_403 ban_404 ban_422 ban_pw ban_url"
        ka.update(**{k: "no" for k in ex.split()})

        ex = "grp on403 on404 xac xad xar xau xban xbc xbd xbr xbu xiu xm"
        ka.update(**{k: [] for k in ex.split()})

        ex = "exp_lg exp_md"
        ka.update(**{k: {} for k in ex.split()})

        ka.update(ka0)

        super(Cfg, self).__init__(
            a=a or [],
            v=v or [],
            c=c,
            E=E,
            dbd="wal",
            dk_salt="b" * 16,
            fk_salt="a" * 16,
            idp_gsep=re.compile("[|:;+,]"),
            iobuf=256 * 1024,
            lang="eng",
            log_badpwd=1,
            logout=573,
            mte={"a": True},
            mth={},
            mtp=[],
            mv_retry="0/0",
            rm_retry="0/0",
            s_rd_sz=256 * 1024,
            s_wr_sz=256 * 1024,
            sort="href",
            srch_hits=99999,
            SRS="/",
            th_covers=["folder.png"],
            th_coversd=["folder.png"],
            th_covers_set=set(["folder.png"]),
            th_coversd_set=set(["folder.png"]),
            th_crop="y",
            th_size="320x256",
            th_x3="n",
            u2sort="s",
            u2ts="c",
            unpost=600,
            warksalt="hunter2",
            **ka
        )


class NullBroker(object):
    def __init__(self, args, asrv):
        self.args = args
        self.asrv = asrv

    def say(self, *args):
        pass

    def ask(self, *args):
        pass


class VSock(object):
    def __init__(self, buf):
        self._query = buf
        self._reply = b""
        self.family = socket.AF_INET
        self.sendall = self.send

    def recv(self, sz):
        ret = self._query[:sz]
        self._query = self._query[sz:]
        return ret

    def send(self, buf):
        self._reply += buf
        return len(buf)

    def getsockname(self):
        return ("a", 1)

    def settimeout(self, a):
        pass


class VHub(object):
    def __init__(self, args, asrv, log):
        self.args = args
        self.asrv = asrv
        self.log = log
        self.is_dut = True
        self.up2k = Up2k(self)


class VBrokerThr(BrokerThr):
    def __init__(self, hub):
        self.hub = hub
        self.log = hub.log
        self.args = hub.args
        self.asrv = hub.asrv


class VHttpSrv(object):
    def __init__(self, args, asrv, log):
        self.args = args
        self.asrv = asrv
        self.log = log
        self.hub = None

        self.broker = NullBroker(args, asrv)
        self.prism = None
        self.bans = {}
        self.tdls = self.dls = {}
        self.tdli = self.dli = {}
        self.nreq = 0
        self.nsus = 0

        aliases = ["splash", "shares", "browser", "browser2", "msg", "md", "mde"]
        self.j2 = {x: J2_FILES for x in aliases}

        self.gpwd = Garda("")
        self.g404 = Garda("")
        self.g403 = Garda("")
        self.gurl = Garda("")

        self.u2idx = None

    def cachebuster(self):
        return "a"

    def get_u2idx(self):
        self.u2idx = self.u2idx or U2idx(self)
        return self.u2idx

    def shutdown(self):
        if self.u2idx:
            self.u2idx.shutdown()


class VHttpSrvUp2k(VHttpSrv):
    def __init__(self, args, asrv, log):
        super(VHttpSrvUp2k, self).__init__(args, asrv, log)
        self.hub = VHub(args, asrv, log)
        self.broker = VBrokerThr(self.hub)

    def shutdown(self):
        self.hub.up2k.shutdown()
        if self.u2idx:
            self.u2idx.shutdown()


class VHttpConn(object):
    def __init__(self, args, asrv, log, buf, use_up2k=False):
        self.t0 = time.time()
        self.aclose = {}
        self.addr = ("127.0.0.1", "42069")
        self.args = args
        self.asrv = asrv
        self.bans = {}
        self.tdls = self.dls = {}
        self.tdli = self.dli = {}
        self.freshen_pwd = 0.0

        Ctor = VHttpSrvUp2k if use_up2k else VHttpSrv
        self.hsrv = Ctor(args, asrv, log)
        self.ico = Ico(args)
        self.ipa_nm = None
        self.lf_url = None
        self.log_func = log
        self.log_src = "a"
        self.mutex = threading.Lock()
        self.pipes = CachedDict(1)
        self.u2mutex = threading.Lock()
        self.nbyte = 0
        self.nid = None
        self.nreq = -1
        self.thumbcli = None
        self.u2fh = FHC()

        self.get_u2idx = self.hsrv.get_u2idx
        self.setbuf(buf)

    def setbuf(self, buf):
        self.s = VSock(buf)
        self.sr = Unrecv(self.s, None)  # type: ignore
        return self

    def shutdown(self):
        self.hsrv.shutdown()


if WINDOWS:
    os.system("rem")