# 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/.

from __future__ import print_function, unicode_literals

import os
import pprint
import sys

from mach.decorators import (
    CommandArgument,
    CommandProvider,
    Command,
)

from autotry import AutoTry
from mozbuild.base import MachCommandBase


UNKNOWN_TEST = '''
I was unable to find tests in the argument(s) given.

You need to specify a test directory, filename, test suite name, or
abbreviation.

It's possible my little brain doesn't know about the type of test you are
trying to execute. If you suspect this, please request support by filing
a bug at
https://bugzilla.mozilla.org/enter_bug.cgi?product=Testing&component=General.
'''.strip()

UNKNOWN_FLAVOR = '''
I know you are trying to run a %s test. Unfortunately, I can't run those
tests yet. Sorry!
'''.strip()

MOCHITEST_CHUNK_BY_DIR = 4
MOCHITEST_TOTAL_CHUNKS = 5

TEST_SUITES = {
    'cppunittest': {
        'aliases': ('Cpp', 'cpp'),
        'mach_command': 'cppunittest',
        'kwargs': {'test_file': None},
    },
    'crashtest': {
        'aliases': ('C', 'Rc', 'RC', 'rc'),
        'mach_command': 'crashtest',
        'kwargs': {'test_file': None},
    },
    'crashtest-ipc': {
        'aliases': ('Cipc', 'cipc'),
        'mach_command': 'crashtest-ipc',
        'kwargs': {'test_file': None},
    },
    'jetpack': {
        'aliases': ('J',),
        'mach_command': 'jetpack-test',
        'kwargs': {},
    },
    'check-spidermonkey': {
        'aliases': ('Sm', 'sm'),
        'mach_command': 'check-spidermonkey',
        'kwargs': {'valgrind': False},
    },
    'mochitest-a11y': {
        'mach_command': 'mochitest',
        'kwargs': {'flavor': 'a11y', 'test_paths': None},
    },
    'mochitest-browser': {
        'aliases': ('bc', 'BC', 'Bc'),
        'mach_command': 'mochitest',
        'kwargs': {'flavor': 'browser-chrome', 'test_paths': None},
    },
    'mochitest-chrome': {
        'mach_command': 'mochitest',
        'kwargs': {'flavor': 'chrome', 'test_paths': None},
    },
    'mochitest-devtools': {
        'aliases': ('dt', 'DT', 'Dt'),
        'mach_command': 'mochitest',
        'kwargs': {'subsuite': 'devtools', 'test_paths': None},
    },
    'mochitest-ipcplugins': {
        'make_target': 'mochitest-ipcplugins',
    },
    'mochitest-plain': {
        'mach_command': 'mochitest',
        'kwargs': {'flavor': 'plain', 'test_paths': None},
    },
    'luciddream': {
        'mach_command': 'luciddream',
        'kwargs': {'test_paths': None},
    },
    'reftest': {
        'aliases': ('RR', 'rr', 'Rr'),
        'mach_command': 'reftest',
        'kwargs': {'test_file': None},
    },
    'reftest-ipc': {
        'aliases': ('Ripc',),
        'mach_command': 'reftest-ipc',
        'kwargs': {'test_file': None},
    },
    'web-platform-tests': {
        'aliases': ('wpt',),
        'mach_command': 'web-platform-tests',
        'kwargs': {}
    },
    'valgrind': {
        'aliases': ('V', 'v'),
        'mach_command': 'valgrind-test',
        'kwargs': {},
    },
    'xpcshell': {
        'aliases': ('X', 'x'),
        'mach_command': 'xpcshell-test',
        'kwargs': {'test_file': 'all'},
    },
}

# Maps test flavors to metadata on how to run that test.
TEST_FLAVORS = {
    'a11y': {
        'mach_command': 'mochitest',
        'kwargs': {'flavor': 'a11y', 'test_paths': []},
    },
    'browser-chrome': {
        'mach_command': 'mochitest',
        'kwargs': {'flavor': 'browser-chrome', 'test_paths': []},
    },
    'chrashtest': { },
    'chrome': {
        'mach_command': 'mochitest',
        'kwargs': {'flavor': 'chrome', 'test_paths': []},
    },
    'mochitest': {
        'mach_command': 'mochitest',
        'kwargs': {'flavor': 'mochitest', 'test_paths': []},
    },
    'reftest': { },
    'steeplechase': { },
    'web-platform-tests': {
        'mach_command': 'web-platform-tests',
        'kwargs': {'include': []}
    },
    'webapprt-chrome': {
        'mach_command': 'mochitest',
        'kwargs': {'flavor': 'webapprt-chrome', 'test_paths': []},
    },
    'xpcshell': {
        'mach_command': 'xpcshell-test',
        'kwargs': {'test_paths': []},
    },
}


for i in range(1, MOCHITEST_TOTAL_CHUNKS + 1):
    TEST_SUITES['mochitest-%d' %i] = {
        'aliases': ('M%d' % i, 'm%d' % i),
        'mach_command': 'mochitest',
        'kwargs': {
            'flavor': 'mochitest',
            'subsuite': 'default',
            'chunk_by_dir': MOCHITEST_CHUNK_BY_DIR,
            'total_chunks': MOCHITEST_TOTAL_CHUNKS,
            'this_chunk': i,
            'test_paths': None,
        },
    }

TEST_HELP = '''
Test or tests to run. Tests can be specified by filename, directory, suite
name or suite alias.

The following test suites and aliases are supported: %s
''' % ', '.join(sorted(TEST_SUITES))
TEST_HELP = TEST_HELP.strip()


@CommandProvider
class Test(MachCommandBase):
    @Command('test', category='testing', description='Run tests (detects the kind of test and runs it).')
    @CommandArgument('what', default=None, nargs='*', help=TEST_HELP)
    def test(self, what):
        """Run tests from names or paths.

        mach test accepts arguments specifying which tests to run. Each argument
        can be:

        * The path to a test file
        * A directory containing tests
        * A test suite name
        * An alias to a test suite name (codes used on TreeHerder)

        When paths or directories are given, they are first resolved to test
        files known to the build system.

        If resolved tests belong to more than one test type/flavor/harness,
        the harness for each relevant type/flavor will be invoked. e.g. if
        you specify a directory with xpcshell and browser chrome mochitests,
        both harnesses will be invoked.
        """
        from mozbuild.testing import TestResolver

        # Parse arguments and assemble a test "plan."
        run_suites = set()
        run_tests = []
        resolver = self._spawn(TestResolver)

        for entry in what:
            # If the path matches the name or alias of an entire suite, run
            # the entire suite.
            if entry in TEST_SUITES:
                run_suites.add(entry)
                continue
            suitefound = False
            for suite, v in TEST_SUITES.items():
                if entry in v.get('aliases', []):
                    run_suites.add(suite)
                    suitefound = True
            if suitefound:
                continue

            # Now look for file/directory matches in the TestResolver.
            relpath = self._wrap_path_argument(entry).relpath()
            tests = list(resolver.resolve_tests(paths=[relpath]))
            run_tests.extend(tests)

            if not tests:
                print('UNKNOWN TEST: %s' % entry, file=sys.stderr)

        if not run_suites and not run_tests:
            print(UNKNOWN_TEST)
            return 1

        status = None
        for suite_name in run_suites:
            suite = TEST_SUITES[suite_name]

            if 'mach_command' in suite:
                res = self._mach_context.commands.dispatch(
                    suite['mach_command'], self._mach_context,
                    **suite['kwargs'])
                if res:
                    status = res

            elif 'make_target' in suite:
                res = self._run_make(target=suite['make_target'],
                    pass_thru=True)
                if res:
                    status = res

        buckets = {}
        for test in run_tests:
            key = (test['flavor'], test['subsuite'])
            buckets.setdefault(key, []).append(test)

        for (flavor, subsuite), tests in sorted(buckets.items()):
            if flavor not in TEST_FLAVORS:
                print(UNKNOWN_FLAVOR % flavor)
                status = 1
                continue

            m = TEST_FLAVORS[flavor]
            if 'mach_command' not in m:
                print(UNKNOWN_FLAVOR % flavor)
                status = 1
                continue

            kwargs = dict(m['kwargs'])
            kwargs['subsuite'] = subsuite

            res = self._mach_context.commands.dispatch(
                    m['mach_command'], self._mach_context,
                    test_objects=tests, **kwargs)
            if res:
                status = res

        return status


@CommandProvider
class MachCommands(MachCommandBase):
    @Command('cppunittest', category='testing',
        description='Run cpp unit tests (C++ tests).')
    @CommandArgument('test_files', nargs='*', metavar='N',
        help='Test to run. Can be specified as one or more files or ' \
            'directories, or omitted. If omitted, the entire test suite is ' \
            'executed.')

    def run_cppunit_test(self, **params):
        import mozinfo
        from mozlog.structured import commandline
        import runcppunittests as cppunittests

        log = commandline.setup_logging("cppunittest",
                                        {},
                                        {"tbpl": sys.stdout})

        if len(params['test_files']) == 0:
            testdir = os.path.join(self.distdir, 'cppunittests')
            tests = cppunittests.extract_unittests_from_args([testdir], mozinfo.info)
        else:
            tests = cppunittests.extract_unittests_from_args(params['test_files'], mozinfo.info)

        # See if we have crash symbols
        symbols_path = os.path.join(self.distdir, 'crashreporter-symbols')
        if not os.path.isdir(symbols_path):
            symbols_path = None

        tester = cppunittests.CPPUnitTests()
        try:
            result = tester.run_tests(tests, self.bindir, symbols_path, interactive=True)
        except Exception as e:
            log.error("Caught exception running cpp unit tests: %s" % str(e))
            result = False

        return 0 if result else 1

def executable_name(name):
    return name + '.exe' if sys.platform.startswith('win') else name

@CommandProvider
class CheckSpiderMonkeyCommand(MachCommandBase):
    @Command('check-spidermonkey', category='testing', description='Run SpiderMonkey tests (JavaScript engine).')
    @CommandArgument('--valgrind', action='store_true', help='Run jit-test suite with valgrind flag')

    def run_checkspidermonkey(self, **params):
        import subprocess
        import sys

        js = os.path.join(self.bindir, executable_name('js'))

        print('Running jit-tests')
        jittest_cmd = [os.path.join(self.topsrcdir, 'js', 'src', 'jit-test', 'jit_test.py'),
              js, '--no-slow', '--jitflags=all']
        if params['valgrind']:
            jittest_cmd.append('--valgrind')

        jittest_result = subprocess.call(jittest_cmd)

        print('running jstests')
        jstest_cmd = [os.path.join(self.topsrcdir, 'js', 'src', 'tests', 'jstests.py'),
              js, '--jitflags=all']
        jstest_result = subprocess.call(jstest_cmd)

        print('running jsapi-tests')
        jsapi_tests_cmd = [os.path.join(self.bindir, executable_name('jsapi-tests'))]
        jsapi_tests_result = subprocess.call(jsapi_tests_cmd)

        print('running check-style')
        check_style_cmd = [sys.executable, os.path.join(self.topsrcdir, 'config', 'check_spidermonkey_style.py')]
        check_style_result = subprocess.call(check_style_cmd, cwd=os.path.join(self.topsrcdir, 'js', 'src'))

        all_passed = jittest_result and jstest_result and jsapi_tests_result and check_style_result

        return all_passed

@CommandProvider
class JsapiTestsCommand(MachCommandBase):
    @Command('jsapi-tests', category='testing', description='Run jsapi tests (JavaScript engine).')
    @CommandArgument('test_name', nargs='?', metavar='N',
        help='Test to run. Can be a prefix or omitted. If omitted, the entire ' \
             'test suite is executed.')

    def run_jsapitests(self, **params):
        import subprocess

        bin_suffix = ''
        if sys.platform.startswith('win'):
            bin_suffix = '.exe'

        print('running jsapi-tests')
        jsapi_tests_cmd = [os.path.join(self.bindir, executable_name('jsapi-tests'))]
        if params['test_name']:
            jsapi_tests_cmd.append(params['test_name'])

        jsapi_tests_result = subprocess.call(jsapi_tests_cmd)

        return jsapi_tests_result


AUTOTRY_HELP_MSG = """
Autotry is in beta, please file bugs blocking 1149670.

Push test from the specified paths to try. A set of test
jobs will be selected based on the tests present in the tree, however
specifying platforms is still required with the -p argument (a default
is taken from the AUTOTRY_PLATFORM_HINT environment variable if set).

The -u argument may be used to specify additional unittest suites to run.

Selected tests will be run in a single chunk of the relevant suite, at this
time in chunk 1.

The following types of tests are eligible to be selected automatically
by this command at this time: %s
""" % list(AutoTry.test_flavors)

@CommandProvider
class PushToTry(MachCommandBase):

    def validate_args(self, paths, tests, builds, platforms):
        if not len(paths) and not tests:
            print("Paths or tests must be specified as an argument to autotry.")
            sys.exit(1)

        if platforms is None:
            platforms = os.environ['AUTOTRY_PLATFORM_HINT']

        for p in paths:
            p = os.path.normpath(os.path.abspath(p))
            if not p.startswith(self.topsrcdir):
                print('Specified path "%s" is outside of the srcdir, unable to'
                      ' specify tests outside of the srcdir' % p)
                sys.exit(1)
            if len(p) <= len(self.topsrcdir):
                print('Specified path "%s" is at the top of the srcdir and would'
                      ' select all tests.' % p)
                sys.exit(1)

        return builds, platforms

    @Command('try', category='testing', description=AUTOTRY_HELP_MSG)
    @CommandArgument('paths', nargs='*', help='Paths to search for tests to run on try.')
    @CommandArgument('-v', dest='verbose', action='store_true', default=True,
                     help='Print detailed information about the resulting test selection '
                          'and commands performed.')
    @CommandArgument('-p', dest='platforms', required='AUTOTRY_PLATFORM_HINT' not in os.environ,
                     help='Platforms to run. (required if not found in the environment)')
    @CommandArgument('-u', dest='tests',
                     help='Test jobs to run. These will be use in place of test jobs '
                          'determined by test paths, if any.')
    @CommandArgument('--extra', dest='extra_tests',
                     help='Additional tests to run. These will be added to test jobs '
                          'determined by test paths, if any.')
    @CommandArgument('-b', dest='builds', default='do',
                     help='Build types to run (d for debug, o for optimized)')
    @CommandArgument('--tag', dest='tags', action='append',
                     help='Restrict tests to the given tag (may be specified multiple times)')
    @CommandArgument('--no-push', dest='push', action='store_false',
                     help='Do not push to try as a result of running this command (if '
                          'specified this command will only print calculated try '
                          'syntax and selection info).')
    def autotry(self, builds=None, platforms=None, paths=None, verbose=None, extra_tests=None,
                push=None, tags=None, tests=None):

        from mozbuild.testing import TestResolver
        from mozbuild.controller.building import BuildDriver

        print("mach try is under development, please file bugs blocking 1149670.")

        builds, platforms = self.validate_args(paths, tests, builds, platforms)
        resolver = self._spawn(TestResolver)

        at = AutoTry(self.topsrcdir, resolver, self._mach_context)
        if at.find_uncommited_changes():
            print('ERROR please commit changes before continuing')
            sys.exit(1)

        driver = self._spawn(BuildDriver)
        driver.install_tests(remove=False)

        manifests_by_flavor = at.manifests_by_flavor(paths)

        if not manifests_by_flavor and not tests:
            print("No tests were found when attempting to resolve paths:\n\n\t%s" %
                  paths)
            sys.exit(1)

        all_manifests = set()
        for m in manifests_by_flavor.values():
            all_manifests |= m
        all_manifests = list(all_manifests)

        msg = at.calc_try_syntax(platforms, manifests_by_flavor.keys(), tests,
                                 extra_tests, builds, all_manifests, tags)

        if verbose:
            print('Tests from the following manifests will be selected: ')
            pprint.pprint(manifests_by_flavor)

        if verbose:
            print('The following try message was calculated:\n\n\t%s\n' % msg)

        if push:
            at.push_to_try(msg, verbose)

        return