import lldb
from lldbsuite.test.lldbtest import *
from lldbsuite.test.decorators import *
import lldbsuite.test.lldbutil as lldbutil
import json


class TestSimulatorPlatformLaunching(TestBase):
    NO_DEBUG_INFO_TESTCASE = True

    def check_load_commands(self, expected_load_command):
        """sanity check the built binary for the expected number of load commands"""
        load_cmds = subprocess.check_output(
            ['otool', '-l', self.getBuildArtifact()]
        ).decode("utf-8")
        found = 0
        for line in load_cmds.split('\n'):
            if expected_load_command in line:
                found += 1
        self.assertEquals(
            found, 1, "wrong number of load commands for {}".format(
                expected_load_command))


    def check_debugserver(self, log, expected_platform, expected_version):
        """scan the debugserver packet log"""
        process_info = lldbutil.packetlog_get_process_info(log)
        self.assertIn('ostype', process_info)
        self.assertEquals(process_info['ostype'], expected_platform)
        dylib_info = lldbutil.packetlog_get_dylib_info(log)
        self.assertTrue(dylib_info)
        aout_info = None
        for image in dylib_info['images']:
            if image['pathname'].endswith('a.out'):
                aout_info = image
        self.assertTrue(aout_info)
        self.assertEquals(aout_info['min_version_os_name'], expected_platform)
        if expected_version:
            self.assertEquals(aout_info['min_version_os_sdk'], expected_version)

    @skipIf(bugnumber="rdar://76995109")
    def run_with(self, arch, os, vers, env, expected_load_command):
        env_list = [env] if env else []
        triple = '-'.join([arch, 'apple', os + vers] + env_list)
        sdk = lldbutil.get_xcode_sdk(os, env)

        version_min = ''
        if not vers:
            vers = lldbutil.get_xcode_sdk_version(sdk)
        if env == 'simulator':
            version_min = '-m{}-simulator-version-min={}'.format(os, vers)
        elif os == 'macosx':
            version_min = '-m{}-version-min={}'.format(os, vers)

        sdk_root = lldbutil.get_xcode_sdk_root(sdk)
        clang = lldbutil.get_xcode_clang(sdk)

        self.build(
            dictionary={
                'ARCH': arch,
                'CC': clang,
                'ARCH_CFLAGS': '-target {} {}'.format(triple, version_min),
                'SDKROOT': sdk_root
            })

        self.check_load_commands(expected_load_command)
        log = self.getBuildArtifact('packets.log')
        self.expect("log enable gdb-remote packets -f "+log)
        lldbutil.run_to_source_breakpoint(self, "break here",
                                          lldb.SBFileSpec("hello.c"))
        triple_re = '-'.join([arch, 'apple', os + vers+'.*'] + env_list)
        self.expect('image list -b -t', patterns=['a\.out '+triple_re])
        self.check_debugserver(log, os+env, vers)

    @skipIfAsan
    @skipUnlessDarwin
    @skipIfDarwinEmbedded
    @apple_simulator_test('iphone')
    @skipIfOutOfTreeDebugserver
    def test_ios(self):
        """Test running an iOS simulator binary"""
        self.run_with(arch=self.getArchitecture(),
                      os='ios', vers='', env='simulator',
                      expected_load_command='LC_BUILD_VERSION')

    @skipIfAsan
    @skipUnlessDarwin
    @skipIfDarwinEmbedded
    @apple_simulator_test('appletv')
    @skipIfOutOfTreeDebugserver
    def test_tvos(self):
        """Test running an tvOS simulator binary"""
        self.run_with(arch=self.getArchitecture(),
                      os='tvos', vers='', env='simulator',
                      expected_load_command='LC_BUILD_VERSION')

    @skipIfAsan
    @skipUnlessDarwin
    @skipIfDarwinEmbedded
    @apple_simulator_test('watch')
    @skipIfDarwin # rdar://problem/64552748
    @skipIf(archs=['arm64','arm64e'])
    @skipIfOutOfTreeDebugserver
    def test_watchos_i386(self):
        """Test running a 32-bit watchOS simulator binary"""
        self.run_with(arch='i386',
                      os='watchos', vers='', env='simulator',
                      expected_load_command='LC_BUILD_VERSION')

    @skipIfAsan
    @skipUnlessDarwin
    @skipIfDarwinEmbedded
    @apple_simulator_test('watch')
    @skipIfDarwin # rdar://problem/64552748
    @skipIf(archs=['i386','x86_64'])
    @skipIfOutOfTreeDebugserver
    def test_watchos_armv7k(self):
        """Test running a 32-bit watchOS simulator binary"""
        self.run_with(arch='armv7k',
                      os='watchos', vers='', env='simulator',
                      expected_load_command='LC_BUILD_VERSION')


    #
    # Back-deployment tests.
    #
    # Older Mach-O versions used less expressive load commands, such
    # as LC_VERSION_MIN_IPHONEOS that wouldn't distinguish between ios
    # and ios-simulator.  When targeting a simulator on Apple Silicon
    # macOS, however, these legacy load commands are never generated.
    #

    @skipUnlessDarwin
    @skipIfDarwinEmbedded
    @skipIfOutOfTreeDebugserver
    def test_lc_version_min_macosx(self):
        """Test running a back-deploying non-simulator MacOS X binary"""
        self.run_with(arch=self.getArchitecture(),
                      os='macosx', vers='10.9', env='',
                      expected_load_command='LC_VERSION_MIN_MACOSX')
    @skipIfAsan
    @skipUnlessDarwin
    @skipIfDarwinEmbedded
    @apple_simulator_test('iphone')
    @skipIf(archs=['arm64','arm64e'])
    @skipIfOutOfTreeDebugserver
    def test_lc_version_min_iphoneos(self):
        """Test running a back-deploying iOS simulator binary
           with a legacy iOS load command"""
        self.run_with(arch=self.getArchitecture(),
                      os='ios', vers='11.0', env='simulator',
                      expected_load_command='LC_VERSION_MIN_IPHONEOS')

    @skipIfAsan
    @skipUnlessDarwin
    @skipIfDarwinEmbedded
    @apple_simulator_test('iphone')
    @skipIf(archs=['arm64','arm64e'])
    @skipIfOutOfTreeDebugserver
    def test_ios_backdeploy_x86(self):
        """Test running a back-deploying iOS simulator binary
           with a legacy iOS load command"""
        self.run_with(arch=self.getArchitecture(),
                      os='ios', vers='13.0', env='simulator',
                      expected_load_command='LC_BUILD_VERSION')

    @skipIfAsan
    @skipUnlessDarwin
    @skipIfDarwinEmbedded
    @apple_simulator_test('iphone')
    @skipIf(archs=['i386','x86_64'])
    @skipIfOutOfTreeDebugserver
    def test_ios_backdeploy_apple_silicon(self):
        """Test running a back-deploying iOS simulator binary"""
        self.run_with(arch=self.getArchitecture(),
                      os='ios', vers='11.0', env='simulator',
                      expected_load_command='LC_BUILD_VERSION')

    @skipIfAsan
    @skipUnlessDarwin
    @skipIfDarwinEmbedded
    @apple_simulator_test('appletv')
    @skipIf(archs=['arm64','arm64e'])
    @skipIfOutOfTreeDebugserver
    def test_lc_version_min_tvos(self):
        """Test running a back-deploying tvOS simulator binary
           with a legacy tvOS load command"""
        self.run_with(arch=self.getArchitecture(),
                      os='tvos', vers='11.0', env='simulator',
                      expected_load_command='LC_VERSION_MIN_TVOS')

    @skipIfAsan
    @skipUnlessDarwin
    @skipIfDarwinEmbedded
    @apple_simulator_test('appletv')
    @skipIf(archs=['i386','x86_64'])
    @skipIfOutOfTreeDebugserver
    def test_tvos_backdeploy_apple_silicon(self):
        """Test running a back-deploying tvOS simulator binary"""
        self.run_with(arch=self.getArchitecture(),
                      os='tvos', vers='11.0', env='simulator',
                      expected_load_command='LC_BUILD_VERSION')

    @skipIfAsan
    @skipUnlessDarwin
    @skipIfDarwinEmbedded
    @apple_simulator_test('watch')
    @skipIf(archs=['arm64','arm64e'])
    @skipIfDarwin # rdar://problem/64552748
    @skipIfOutOfTreeDebugserver
    def test_lc_version_min_watchos(self):
        """Test running a back-deploying watchOS simulator binary
           with a legacy watchOS load command"""
        self.run_with(arch='i386',
                      os='watchos', vers='4.0', env='simulator',
                      expected_load_command='LC_VERSION_MIN_WATCHOS')

    @skipIfAsan
    @skipUnlessDarwin
    @skipIfDarwinEmbedded
    @apple_simulator_test('watch')
    @skipIf(archs=['arm64','arm64e'])
    @skipIfDarwin # rdar://problem/64552748
    @skipIfOutOfTreeDebugserver
    def test_watchos_backdeploy_apple_silicon(self):
        """Test running a back-deploying watchOS simulator binary"""
        self.run_with(arch='armv7k',
                      os='watchos', vers='4.0', env='simulator',
                      expected_load_command='LC_BUILD_VERSION')
