import os

from dvc.cli import parse_args
from dvc.command.init import CmdInit
from dvc.command.run import CmdRun
from dvc.command.data_sync import CmdDataPull, CmdDataPush
from dvc.command.status import CmdDataStatus
from dvc.command.repro import CmdRepro
from dvc.command.add import CmdAdd
from dvc.command.remove import CmdRemove
from dvc.command.gc import CmdGC
from dvc.command.config import CmdConfig
from dvc.command.checkout import CmdCheckout
from dvc.exceptions import DvcException
from dvc.command.base import CmdBase

from tests.basic_env import TestDvc


class TestArgParse(TestDvc):
    def test(self):
        args = parse_args(['init'])
        self.assertIsInstance(args.func(args), CmdInit)


class TestRun(TestDvc):
    def test(self):
        dep1 = 'dep1'
        dep2 = 'dep2'

        out1 = 'out1'
        out2 = 'out2'

        out_no_cache1 = 'out_no_cache1'
        out_no_cache2 = 'out_no_cache2'

        fname = 'dvc.dvc'
        cwd = os.curdir
        cmd = 'cmd'
        arg1 = 'arg1'
        arg2 = 'arg2'

        args = parse_args(['run',
                           '-d', dep1,
                           '--deps', dep2,
                           '-o', out1,
                           '--outs', out2,
                           '-O', out_no_cache1,
                           '--outs-no-cache', out_no_cache2,
                           '-f', fname,
                           '--file', fname,
                           '-c', cwd,
                           cmd, arg1, arg2])

        self.assertIsInstance(args.func(args), CmdRun)
        self.assertEqual(args.deps, [dep1, dep2])
        self.assertEqual(args.outs, [out1, out2])
        self.assertEqual(args.outs_no_cache, [out_no_cache1, out_no_cache2])
        self.assertEqual(args.file, fname)
        self.assertEqual(args.cwd, cwd)
        self.assertEqual(args.command, [cmd, arg1, arg2])


class TestPull(TestDvc):
    def test(self):
        args = parse_args(['pull'])
        self.assertIsInstance(args.func(args), CmdDataPull)


class TestPush(TestDvc):
    def test(self):
        args = parse_args(['push'])
        self.assertIsInstance(args.func(args), CmdDataPush)


class TestStatus(TestDvc):
    def test(self):
        args = parse_args(['status'])
        self.assertIsInstance(args.func(args), CmdDataStatus)


class TestRepro(TestDvc):
    def test(self):
        target1 = '1'
        target2 = '2'

        args = parse_args(['repro',
                           target1,
                           target2,
                           '-f', '--force',
                           '-s', '--single-item'])

        self.assertIsInstance(args.func(args), CmdRepro)
        self.assertEqual(args.targets, [target1, target2])
        self.assertEqual(args.force, True)
        self.assertEqual(args.single_item, True)


class TestRemove(TestDvc):
    def test(self):
        target1 = '1'
        target2 = '2'

        args = parse_args(['remove',
                           target1,
                           target2])

        self.assertIsInstance(args.func(args), CmdRemove)
        self.assertEqual(args.targets, [target1, target2])


class TestAdd(TestDvc):
    def test(self):
        target1 = '1'
        target2 = '2'

        args = parse_args(['add',
                           target1,
                           target2])

        self.assertIsInstance(args.func(args), CmdAdd)
        self.assertEqual(args.targets, [target1, target2])


class TestGC(TestDvc):
    def test(self):
        args = parse_args(['gc'])
        self.assertIsInstance(args.func(args), CmdGC)


class TestGCMultipleProjects(TestDvc):
    def test(self):
        args = parse_args([
            'gc',
            '-p',
            '/tmp/asdf',
            '/tmp/xyz'
        ])

        self.assertIsInstance(args.func(args), CmdGC)

        self.assertEqual(args.projects, ['/tmp/asdf', '/tmp/xyz'])


class TestConfig(TestDvc):
    def test(self):
        name = 'param'
        value = '1'

        args = parse_args(['config',
                           '-u', '--unset',
                           name,
                           value])

        self.assertIsInstance(args.func(args), CmdConfig)
        self.assertEqual(args.unset, True)
        self.assertEqual(args.name, name)
        self.assertEqual(args.value, value)


class TestCheckout(TestDvc):
    def test(self):
        args = parse_args(['checkout'])
        self.assertIsInstance(args.func(args), CmdCheckout)


class TestFindRoot(TestDvc):
    def test(self):
        os.chdir("..")

        class A(object):
            quiet = False
            verbose = True

        args = A()
        with self.assertRaises(DvcException):
            CmdBase(args)