#!/usr/bin/env python
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

import os
import sys
import subprocess
from zipfile import ZipFile
import runcppunittests as cppunittests
import mozcrash
import mozfile
import mozinfo
import mozlog
import posixpath
from mozdevice import ADBAndroid, ADBProcessError

try:
    from mozbuild.base import MozbuildObject
    build_obj = MozbuildObject.from_environment()
except ImportError:
    build_obj = None


class RemoteCPPUnitTests(cppunittests.CPPUnitTests):

    def __init__(self, options, progs):
        cppunittests.CPPUnitTests.__init__(self)
        self.options = options
        self.device = ADBAndroid(adb=options.adb_path,
                                 device=options.device_serial,
                                 test_root=options.remote_test_root)
        self.remote_test_root = posixpath.join(self.device.test_root, "cppunittests")
        self.remote_bin_dir = posixpath.join(self.remote_test_root, "b")
        self.remote_tmp_dir = posixpath.join(self.remote_test_root, "tmp")
        self.remote_home_dir = posixpath.join(self.remote_test_root, "h")
        if options.setup:
            self.setup_bin(progs)

    def setup_bin(self, progs):
        self.device.rm(self.remote_test_root, force=True, recursive=True)
        self.device.mkdir(self.remote_home_dir, parents=True)
        self.device.mkdir(self.remote_tmp_dir)
        self.push_libs()
        self.push_progs(progs)
        self.device.chmod(self.remote_bin_dir, recursive=True, root=True)

    def push_libs(self):
        if self.options.local_apk:
            with mozfile.TemporaryDirectory() as tmpdir:
                apk_contents = ZipFile(self.options.local_apk)

                for info in apk_contents.infolist():
                    if info.filename.endswith(".so"):
                        print >> sys.stderr, "Pushing %s.." % info.filename
                        remote_file = posixpath.join(
                            self.remote_bin_dir, os.path.basename(info.filename))
                        apk_contents.extract(info, tmpdir)
                        local_file = os.path.join(tmpdir, info.filename)
                        with open(local_file) as f:
                            # Decompress xz-compressed file.
                            if f.read(5)[1:] == '7zXZ':
                                cmd = [
                                    'xz', '-df', '--suffix', '.so', local_file]
                                subprocess.check_output(cmd)
                                # xz strips the ".so" file suffix.
                                os.rename(local_file[:-3], local_file)
                        self.device.push(local_file, remote_file)

        elif self.options.local_lib:
            for file in os.listdir(self.options.local_lib):
                if file.endswith(".so"):
                    print >> sys.stderr, "Pushing %s.." % file
                    remote_file = posixpath.join(self.remote_bin_dir, file)
                    local_file = os.path.join(self.options.local_lib, file)
                    self.device.push(local_file, remote_file)
            # Additional libraries may be found in a sub-directory such as
            # "lib/armeabi-v7a"
            for subdir in ["assets", "lib"]:
                local_arm_lib = os.path.join(self.options.local_lib, subdir)
                if os.path.isdir(local_arm_lib):
                    for root, dirs, files in os.walk(local_arm_lib):
                        for file in files:
                            if (file.endswith(".so")):
                                print >> sys.stderr, "Pushing %s.." % file
                                remote_file = posixpath.join(
                                    self.remote_bin_dir, file)
                                local_file = os.path.join(root, file)
                                self.device.push(local_file, remote_file)

    def push_progs(self, progs):
        for local_file in progs:
            remote_file = posixpath.join(
                self.remote_bin_dir, os.path.basename(local_file))
            self.device.push(local_file, remote_file)

    def build_environment(self):
        env = self.build_core_environment()
        env['LD_LIBRARY_PATH'] = self.remote_bin_dir
        env["TMPDIR"] = self.remote_tmp_dir
        env["HOME"] = self.remote_home_dir
        env["MOZ_XRE_DIR"] = self.remote_bin_dir
        if self.options.add_env:
            for envdef in self.options.add_env:
                envdef_parts = envdef.split("=", 1)
                if len(envdef_parts) == 2:
                    env[envdef_parts[0]] = envdef_parts[1]
                elif len(envdef_parts) == 1:
                    env[envdef_parts[0]] = ""
                else:
                    self.log.warning(
                        "invalid --addEnv option skipped: %s" % envdef)

        return env

    def run_one_test(self, prog, env, symbols_path=None, interactive=False,
                     timeout_factor=1):
        """
        Run a single C++ unit test program remotely.

        Arguments:
        * prog: The path to the test program to run.
        * env: The environment to use for running the program.
        * symbols_path: A path to a directory containing Breakpad-formatted
                        symbol files for producing stack traces on crash.
        * timeout_factor: An optional test-specific timeout multiplier.

        Return True if the program exits with a zero status, False otherwise.
        """
        basename = os.path.basename(prog)
        remote_bin = posixpath.join(self.remote_bin_dir, basename)
        self.log.test_start(basename)
        test_timeout = cppunittests.CPPUnitTests.TEST_PROC_TIMEOUT * \
            timeout_factor

        try:
            output = self.device.shell_output(remote_bin, env=env,
                                              cwd=self.remote_home_dir,
                                              timeout=test_timeout)
            returncode = 0
        except ADBProcessError as e:
            output = e.adb_process.stdout
            returncode = e.adb_process.exitcode

        self.log.process_output(basename, "\n%s" % output,
                                command=[remote_bin])
        with mozfile.TemporaryDirectory() as tempdir:
            self.device.pull(self.remote_home_dir, tempdir)
            if mozcrash.check_for_crashes(tempdir, symbols_path,
                                          test_name=basename):
                self.log.test_end(basename, status='CRASH', expected='PASS')
                return False
        result = returncode == 0
        if not result:
            self.log.test_end(basename, status='FAIL', expected='PASS',
                              message=("test failed with return code %s" %
                                       returncode))
        else:
            self.log.test_end(basename, status='PASS', expected='PASS')
        return result


class RemoteCPPUnittestOptions(cppunittests.CPPUnittestOptions):

    def __init__(self):
        cppunittests.CPPUnittestOptions.__init__(self)
        defaults = {}

        self.add_option("--deviceSerial", action="store",
                        type="string", dest="device_serial",
                        help="serial ID of device")
        defaults["device_serial"] = None

        self.add_option("--adbPath", action="store",
                        type="string", dest="adb_path",
                        help="Path to adb")
        defaults["adb_path"] = "adb"

        self.add_option("--noSetup", action="store_false",
                        dest="setup",
                        help="do not copy any files to device (to be used only if "
                        "device is already setup)")
        defaults["setup"] = True

        self.add_option("--localLib", action="store",
                        type="string", dest="local_lib",
                        help="location of libraries to push -- preferably stripped")
        defaults["local_lib"] = None

        self.add_option("--apk", action="store",
                        type="string", dest="local_apk",
                        help="local path to Fennec APK")
        defaults["local_apk"] = None

        self.add_option("--localBinDir", action="store",
                        type="string", dest="local_bin",
                        help="local path to bin directory")
        defaults[
            "local_bin"] = build_obj.bindir if build_obj is not None else None

        self.add_option("--remoteTestRoot", action="store",
                        type="string", dest="remote_test_root",
                        help="remote directory to use as test root (eg. /data/local/tests)")
        # /data/local/tests is used because it is usually not possible to set +x permissions
        # on binaries on /mnt/sdcard
        defaults["remote_test_root"] = "/data/local/tests"

        self.add_option("--addEnv", action="append",
                        type="string", dest="add_env",
                        help="additional remote environment variable definitions "
                        "(eg. --addEnv \"somevar=something\")")
        defaults["add_env"] = None

        self.set_defaults(**defaults)


def run_test_harness(options, args):
    options.xre_path = os.path.abspath(options.xre_path)
    cppunittests.update_mozinfo()
    progs = cppunittests.extract_unittests_from_args(args,
                                                     mozinfo.info,
                                                     options.manifest_path)
    tester = RemoteCPPUnitTests(options, [item[0] for item in progs])
    result = tester.run_tests(progs, options.xre_path, options.symbols_path)
    return result


def main():
    parser = RemoteCPPUnittestOptions()
    mozlog.commandline.add_logging_group(parser)
    options, args = parser.parse_args()
    if not args:
        print >>sys.stderr, """Usage: %s <test binary> [<test binary>...]""" % sys.argv[0]
        sys.exit(1)
    if options.local_lib is not None and not os.path.isdir(options.local_lib):
        print >>sys.stderr, """Error: --localLib directory %s not found""" % options.local_lib
        sys.exit(1)
    if options.local_apk is not None and not os.path.isfile(options.local_apk):
        print >>sys.stderr, """Error: --apk file %s not found""" % options.local_apk
        sys.exit(1)
    if not options.xre_path:
        print >>sys.stderr, """Error: --xre-path is required"""
        sys.exit(1)

    log = mozlog.commandline.setup_logging("remotecppunittests", options,
                                           {"tbpl": sys.stdout})
    try:
        result = run_test_harness(options, args)
    except Exception as e:
        log.error(str(e))
        result = False
    sys.exit(0 if result else 1)


if __name__ == '__main__':
    main()
