"""
    This module is executed in remote subprocesses and helps to
    control a remote testing session and relay back information.
    It assumes that 'py' is importable and does not have dependencies
    on the rest of the xdist code.  This means that the xdist-plugin
    needs not to be installed in remote environments.
"""

import sys
import os
import time

import _pytest.hookspec
import pytest


class WorkerInteractor(object):
    def __init__(self, config, channel):
        self.config = config
        self.workerid = config.workerinput.get("workerid", "?")
        self.log = py.log.Producer("worker-%s" % self.workerid)
        if not config.option.debug:
            py.log.setconsumer(self.log._keywords, None)
        self.channel = channel
        config.pluginmanager.register(self)

    def sendevent(self, name, **kwargs):
        self.log("sending", name, kwargs)
        self.channel.send((name, kwargs))

    def pytest_internalerror(self, excrepr):
        for line in str(excrepr).split("\n"):
            self.log("IERROR>", line)

    def pytest_sessionstart(self, session):
        self.session = session
        workerinfo = getinfodict()
        self.sendevent("workerready", workerinfo=workerinfo)

    @pytest.hookimpl(hookwrapper=True)
    def pytest_sessionfinish(self, exitstatus):
        self.config.workeroutput["exitstatus"] = exitstatus
        yield
        self.sendevent("workerfinished", workeroutput=self.config.workeroutput)

    def pytest_collection(self, session):
        self.sendevent("collectionstart")

    def pytest_runtestloop(self, session):
        self.log("entering main loop")
        torun = []
        while 1:
            try:
                name, kwargs = self.channel.receive()
            except EOFError:
                return True
            self.log("received command", name, kwargs)
            if name == "runtests":
                torun.extend(kwargs["indices"])
            elif name == "runtests_all":
                torun.extend(range(len(session.items)))
            self.log("items to run:", torun)
            # only run if we have an item and a next item
            while len(torun) >= 2:
                self.run_one_test(torun)
            if name == "shutdown":
                if torun:
                    self.run_one_test(torun)
                break
        return True

    def run_one_test(self, torun):
        items = self.session.items
        self.item_index = torun.pop(0)
        item = items[self.item_index]
        if torun:
            nextitem = items[torun[0]]
        else:
            nextitem = None

        start = time.time()
        self.config.hook.pytest_runtest_protocol(item=item, nextitem=nextitem)
        duration = time.time() - start
        self.sendevent(
            "runtest_protocol_complete", item_index=self.item_index, duration=duration
        )

    def pytest_collection_finish(self, session):
        self.sendevent(
            "collectionfinish",
            topdir=str(session.fspath),
            ids=[item.nodeid for item in session.items],
        )

    def pytest_runtest_logstart(self, nodeid, location):
        self.sendevent("logstart", nodeid=nodeid, location=location)

    # the pytest_runtest_logfinish hook was introduced in pytest 3.4
    if hasattr(_pytest.hookspec, "pytest_runtest_logfinish"):

        def pytest_runtest_logfinish(self, nodeid, location):
            self.sendevent("logfinish", nodeid=nodeid, location=location)

    def pytest_runtest_logreport(self, report):
        data = serialize_report(report)
        data["item_index"] = self.item_index
        data["worker_id"] = self.workerid
        assert self.session.items[self.item_index].nodeid == report.nodeid
        self.sendevent("testreport", data=data)

    def pytest_collectreport(self, report):
        # master only needs reports that failed, as optimization send only them instead (#330)
        if report.failed:
            data = serialize_report(report)
            self.sendevent("collectreport", data=data)

    def pytest_logwarning(self, message, code, nodeid, fslocation):
        self.sendevent(
            "logwarning",
            message=message,
            code=code,
            nodeid=nodeid,
            fslocation=str(fslocation),
        )


def serialize_report(rep):
    def disassembled_report(rep):
        reprtraceback = rep.longrepr.reprtraceback.__dict__.copy()
        reprcrash = rep.longrepr.reprcrash.__dict__.copy()

        new_entries = []
        for entry in reprtraceback["reprentries"]:
            entry_data = {"type": type(entry).__name__, "data": entry.__dict__.copy()}
            for key, value in entry_data["data"].items():
                if hasattr(value, "__dict__"):
                    entry_data["data"][key] = value.__dict__.copy()
            new_entries.append(entry_data)

        reprtraceback["reprentries"] = new_entries

        return {
            "reprcrash": reprcrash,
            "reprtraceback": reprtraceback,
            "sections": rep.longrepr.sections,
        }

    import py

    d = rep.__dict__.copy()
    if hasattr(rep.longrepr, "toterminal"):
        if hasattr(rep.longrepr, "reprtraceback") and hasattr(
            rep.longrepr, "reprcrash"
        ):
            d["longrepr"] = disassembled_report(rep)
        else:
            d["longrepr"] = str(rep.longrepr)
    else:
        d["longrepr"] = rep.longrepr
    for name in d:
        if isinstance(d[name], py.path.local):
            d[name] = str(d[name])
        elif name == "result":
            d[name] = None  # for now
    return d


def getinfodict():
    import platform

    return dict(
        version=sys.version,
        version_info=tuple(sys.version_info),
        sysplatform=sys.platform,
        platform=platform.platform(),
        executable=sys.executable,
        cwd=os.getcwd(),
    )


def remote_initconfig(option_dict, args):
    from _pytest.config import Config

    option_dict["plugins"].append("no:terminal")
    config = Config.fromdictargs(option_dict, args)
    config.option.looponfail = False
    config.option.usepdb = False
    config.option.dist = "no"
    config.option.distload = False
    config.option.numprocesses = None
    config.args = args
    return config


if __name__ == "__channelexec__":
    channel = channel  # noqa
    workerinput, args, option_dict = channel.receive()
    importpath = os.getcwd()
    sys.path.insert(0, importpath)  # XXX only for remote situations
    os.environ["PYTHONPATH"] = (
        importpath + os.pathsep + os.environ.get("PYTHONPATH", "")
    )
    os.environ["PYTEST_XDIST_WORKER"] = workerinput["workerid"]
    os.environ["PYTEST_XDIST_WORKER_COUNT"] = str(workerinput["workercount"])
    # os.environ['PYTHONPATH'] = importpath
    import py

    config = remote_initconfig(option_dict, args)
    config.workerinput = workerinput
    config.workeroutput = {}
    # TODO: deprecated name, backward compatibility only. Remove it in future
    config.slaveinput = config.workerinput
    config.slaveoutput = config.workeroutput
    interactor = WorkerInteractor(config, channel)
    config.hook.pytest_cmdline_main(config=config)