import os
import unittest
from copy import deepcopy

import mozunit

JSON_TYPE = None
try:
    import simplejson as json

    assert json
except ImportError:
    import json

    JSON_TYPE = "json"
else:
    JSON_TYPE = "simplejson"

from mozharness.base import config

MH_DIR = os.path.dirname(os.path.dirname(__file__))


class TestParseConfigFile(unittest.TestCase):
    def _get_json_config(
        self,
        filename=os.path.join(MH_DIR, "configs", "test", "test.json"),
        output="dict",
    ):
        fh = open(filename)
        contents = json.load(fh)
        fh.close()
        if output == "dict":
            return dict(contents)
        else:
            return contents

    def _get_python_config(
        self, filename=os.path.join(MH_DIR, "configs", "test", "test.py"), output="dict"
    ):
        global_dict = {}
        local_dict = {}
        # exec(open(filename).read(), global_dict, local_dict)
        exec(
            compile(open(filename, "rb").read(), filename, "exec"),
            global_dict,
            local_dict,
        )
        return local_dict["config"]

    def test_json_config(self):
        c = config.BaseConfig(initial_config_file="test/test.json")
        content_dict = self._get_json_config()
        for key in content_dict.keys():
            self.assertEqual(content_dict[key], c._config[key])

    def test_python_config(self):
        c = config.BaseConfig(initial_config_file="test/test.py")
        config_dict = self._get_python_config()
        for key in config_dict.keys():
            self.assertEqual(config_dict[key], c._config[key])

    def test_illegal_config(self):
        self.assertRaises(
            IOError,
            config.parse_config_file,
            "this_file_does_not_exist.py",
            search_path="yadda",
        )

    def test_illegal_suffix(self):
        self.assertRaises(
            RuntimeError, config.parse_config_file, "test/test.illegal_suffix"
        )

    def test_malformed_json(self):
        if JSON_TYPE == "simplejson":
            self.assertRaises(
                json.decoder.JSONDecodeError,
                config.parse_config_file,
                "test/test_malformed.json",
            )
        else:
            self.assertRaises(
                ValueError, config.parse_config_file, "test/test_malformed.json"
            )

    def test_malformed_python(self):
        self.assertRaises(
            SyntaxError, config.parse_config_file, "test/test_malformed.py"
        )

    def test_multiple_config_files_override_string(self):
        c = config.BaseConfig(initial_config_file="test/test.py")
        c.parse_args(["--cfg", "test/test_override.py,test/test_override2.py"])
        self.assertEqual(c._config["override_string"], "yay")

    def test_multiple_config_files_override_list(self):
        c = config.BaseConfig(initial_config_file="test/test.py")
        c.parse_args(["--cfg", "test/test_override.py,test/test_override2.py"])
        self.assertEqual(c._config["override_list"], ["yay", "worked"])

    def test_multiple_config_files_override_dict(self):
        c = config.BaseConfig(initial_config_file="test/test.py")
        c.parse_args(["--cfg", "test/test_override.py,test/test_override2.py"])
        self.assertEqual(c._config["override_dict"], {"yay": "worked"})

    def test_multiple_config_files_keep_string(self):
        c = config.BaseConfig(initial_config_file="test/test.py")
        c.parse_args(["--cfg", "test/test_override.py,test/test_override2.py"])
        self.assertEqual(c._config["keep_string"], "don't change me")

    def test_optional_config_files_override_value(self):
        c = config.BaseConfig(initial_config_file="test/test.py")
        c.parse_args([
            "--cfg",
            "test/test_override.py,test/test_override2.py",
            "--opt-cfg",
            "test/test_optional.py",
        ])
        self.assertEqual(c._config["opt_override"], "new stuff")

    def test_optional_config_files_missing_config(self):
        c = config.BaseConfig(initial_config_file="test/test.py")
        c.parse_args([
            "--cfg",
            "test/test_override.py,test/test_override2.py",
            "--opt-cfg",
            "test/test_optional.py,does_not_exist.py",
        ])
        self.assertEqual(c._config["opt_override"], "new stuff")

    def test_optional_config_files_keep_string(self):
        c = config.BaseConfig(initial_config_file="test/test.py")
        c.parse_args([
            "--cfg",
            "test/test_override.py,test/test_override2.py",
            "--opt-cfg",
            "test/test_optional.py",
        ])
        self.assertEqual(c._config["keep_string"], "don't change me")


class TestReadOnlyDict(unittest.TestCase):
    control_dict = {
        "b": "2",
        "c": {"d": "4"},
        "h": ["f", "g"],
        "e": ["f", "g", {"turtles": ["turtle1"]}],
        "d": {"turtles": ["turtle1"]},
    }

    def get_unlocked_ROD(self):
        r = config.ReadOnlyDict(self.control_dict)
        return r

    def get_locked_ROD(self):
        r = config.ReadOnlyDict(self.control_dict)
        r.lock()
        return r

    def test_create_ROD(self):
        r = self.get_unlocked_ROD()
        self.assertEqual(
            r, self.control_dict, msg="can't transfer dict to ReadOnlyDict"
        )

    def test_pop_item(self):
        r = self.get_unlocked_ROD()
        r.popitem()
        self.assertEqual(
            len(r),
            len(self.control_dict) - 1,
            msg="can't popitem() ReadOnlyDict when unlocked",
        )

    def test_pop(self):
        r = self.get_unlocked_ROD()
        r.pop("e")
        self.assertEqual(
            len(r),
            len(self.control_dict) - 1,
            msg="can't pop() ReadOnlyDict when unlocked",
        )

    def test_set(self):
        r = self.get_unlocked_ROD()
        r["e"] = "yarrr"
        self.assertEqual(
            r["e"], "yarrr", msg="can't set var in ReadOnlyDict when unlocked"
        )

    def test_del(self):
        r = self.get_unlocked_ROD()
        del r["e"]
        self.assertEqual(
            len(r),
            len(self.control_dict) - 1,
            msg="can't del in ReadOnlyDict when unlocked",
        )

    def test_clear(self):
        r = self.get_unlocked_ROD()
        r.clear()
        self.assertEqual(r, {}, msg="can't clear() ReadOnlyDict when unlocked")

    def test_set_default(self):
        r = self.get_unlocked_ROD()
        for key in self.control_dict.keys():
            r.setdefault(key, self.control_dict[key])
        self.assertEqual(
            r, self.control_dict, msg="can't setdefault() ReadOnlyDict when unlocked"
        )

    def test_locked_set(self):
        r = self.get_locked_ROD()
        # TODO use |with self.assertRaises(AssertionError):| if/when we're
        # all on 2.7.
        try:
            r["e"] = 2
        except AssertionError:
            pass
        else:
            self.assertEqual(0, 1, msg="can set r['e'] when locked")

    def test_locked_del(self):
        r = self.get_locked_ROD()
        try:
            del r["e"]
        except AssertionError:
            pass
        else:
            self.assertEqual(0, 1, "can del r['e'] when locked")

    def test_locked_popitem(self):
        r = self.get_locked_ROD()
        self.assertRaises(AssertionError, r.popitem)

    def test_locked_update(self):
        r = self.get_locked_ROD()
        self.assertRaises(AssertionError, r.update, {})

    def test_locked_set_default(self):
        r = self.get_locked_ROD()
        self.assertRaises(AssertionError, r.setdefault, {})

    def test_locked_pop(self):
        r = self.get_locked_ROD()
        self.assertRaises(AssertionError, r.pop)

    def test_locked_clear(self):
        r = self.get_locked_ROD()
        self.assertRaises(AssertionError, r.clear)

    def test_locked_second_level_dict_pop(self):
        r = self.get_locked_ROD()
        self.assertRaises(AssertionError, r["c"].update, {})

    def test_locked_second_level_list_pop(self):
        r = self.get_locked_ROD()
        with self.assertRaises(AttributeError):
            r["e"].pop()

    def test_locked_third_level_mutate(self):
        r = self.get_locked_ROD()
        with self.assertRaises(AttributeError):
            r["d"]["turtles"].append("turtle2")

    def test_locked_object_in_tuple_mutate(self):
        r = self.get_locked_ROD()
        with self.assertRaises(AttributeError):
            r["e"][2]["turtles"].append("turtle2")

    def test_locked_second_level_dict_pop2(self):
        r = self.get_locked_ROD()
        self.assertRaises(AssertionError, r["c"].update, {})

    def test_locked_second_level_list_pop2(self):
        r = self.get_locked_ROD()
        with self.assertRaises(AttributeError):
            r["e"].pop()

    def test_locked_third_level_mutate2(self):
        r = self.get_locked_ROD()
        with self.assertRaises(AttributeError):
            r["d"]["turtles"].append("turtle2")

    def test_locked_object_in_tuple_mutate2(self):
        r = self.get_locked_ROD()
        with self.assertRaises(AttributeError):
            r["e"][2]["turtles"].append("turtle2")

    def test_locked_deepcopy_set(self):
        r = self.get_locked_ROD()
        c = deepcopy(r)
        c["e"] = "hey"
        self.assertEqual(c["e"], "hey", "can't set var in ROD after deepcopy")


class TestActions(unittest.TestCase):
    all_actions = ["a", "b", "c", "d", "e"]
    default_actions = ["b", "c", "d"]

    def test_verify_actions(self):
        c = config.BaseConfig(initial_config_file="test/test.json")
        try:
            c.verify_actions(["not_a_real_action"])
        except SystemExit:
            pass
        else:
            self.assertEqual(0, 1, msg="verify_actions() didn't die on invalid action")
        c = config.BaseConfig(initial_config_file="test/test.json")
        returned_actions = c.verify_actions(c.all_actions)
        self.assertEqual(
            c.all_actions,
            returned_actions,
            msg="returned actions from verify_actions() changed",
        )

    def test_default_actions(self):
        c = config.BaseConfig(
            default_actions=self.default_actions,
            all_actions=self.all_actions,
            initial_config_file="test/test.json",
        )
        self.assertEqual(
            self.default_actions, c.get_actions(), msg="default_actions broken"
        )

    def test_no_action1(self):
        c = config.BaseConfig(
            default_actions=self.default_actions,
            all_actions=self.all_actions,
            initial_config_file="test/test.json",
        )
        c.parse_args(args=["foo", "--no-action", "a"])
        self.assertEqual(
            self.default_actions, c.get_actions(), msg="--no-ACTION broken"
        )

    def test_no_action2(self):
        c = config.BaseConfig(
            default_actions=self.default_actions,
            all_actions=self.all_actions,
            initial_config_file="test/test.json",
        )
        c.parse_args(args=["foo", "--no-c"])
        self.assertEqual(["b", "d"], c.get_actions(), msg="--no-ACTION broken")

    def test_add_action(self):
        c = config.BaseConfig(
            default_actions=self.default_actions,
            all_actions=self.all_actions,
            initial_config_file="test/test.json",
        )
        c.parse_args(args=["foo", "--add-action", "e"])
        self.assertEqual(
            ["b", "c", "d", "e"], c.get_actions(), msg="--add-action ACTION broken"
        )

    def test_only_action(self):
        c = config.BaseConfig(
            default_actions=self.default_actions,
            all_actions=self.all_actions,
            initial_config_file="test/test.json",
        )
        c.parse_args(args=["foo", "--a", "--e"])
        self.assertEqual(["a", "e"], c.get_actions(), msg="--ACTION broken")


if __name__ == "__main__":
    mozunit.main()