import json
import os
import shutil
import subprocess
import sys
import unittest

from cpl_core.utils import String
from unittests_cli.abc.command_test_case import CommandTestCase
from unittests_cli.constants import PLAYGROUND_PATH
from unittests_shared.cli_commands import CLICommands


class InstallTestCase(CommandTestCase):
    def __init__(self, method_name: str):
        CommandTestCase.__init__(self, method_name)
        self._source = "install-test-source"
        self._project_file = f"src/{String.convert_to_snake_case(self._source)}/{self._source}.json"

    def _get_project_settings(self):
        with open(os.path.join(os.getcwd(), self._project_file), "r", encoding="utf-8") as cfg:
            # load json
            project_json = json.load(cfg)
            cfg.close()

        return project_json

    def _save_project_settings(self, settings: dict):
        with open(os.path.join(os.getcwd(), self._project_file), "w", encoding="utf-8") as project_file:
            project_file.write(json.dumps(settings, indent=2))
            project_file.close()

    def setUp(self):
        if not os.path.exists(PLAYGROUND_PATH):
            os.makedirs(PLAYGROUND_PATH)

        os.chdir(PLAYGROUND_PATH)
        # create projects
        CLICommands.new("console", self._source, "--ab", "--s", "--venv")
        os.chdir(os.path.join(os.getcwd(), self._source))

    def _get_installed_packages(self) -> dict:
        reqs = subprocess.check_output([os.path.join(os.getcwd(), "venv/bin/python"), "-m", "pip", "freeze"])
        return dict([tuple(r.decode().split("==")) for r in reqs.split()])

    def test_install_package(self):
        version = "1.7.3"
        package_name = "discord.py"
        package = f"{package_name}=={version}"
        CLICommands.install(package)
        settings = self._get_project_settings()

        with self.subTest(msg="Project deps"):
            self.assertNotEqual(settings, {})
            self.assertIn("ProjectSettings", settings)
            self.assertIn("Dependencies", settings["ProjectSettings"])
            self.assertIn(package, settings["ProjectSettings"]["Dependencies"])

        with self.subTest(msg="PIP"):
            packages = self._get_installed_packages()
            self.assertIn(package_name, packages)
            self.assertEqual(version, packages[package_name])

    def test_dev_install_package(self):
        version = "1.7.3"
        package_name = "discord.py"
        package = f"{package_name}=={version}"
        CLICommands.install(package, is_dev=True)
        settings = self._get_project_settings()

        with self.subTest(msg="Project deps"):
            self.assertNotEqual(settings, {})
            self.assertIn("ProjectSettings", settings)
            self.assertIn("Dependencies", settings["ProjectSettings"])
            self.assertIn("DevDependencies", settings["ProjectSettings"])
            self.assertNotIn(package, settings["ProjectSettings"]["Dependencies"])
            self.assertIn(package, settings["ProjectSettings"]["DevDependencies"])

        with self.subTest(msg="PIP"):
            packages = self._get_installed_packages()
            self.assertIn(package_name, packages)
            self.assertEqual(version, packages[package_name])

    def _test_install_all(self):
        version = "1.7.3"
        package_name = "discord.py"
        package = f"{package_name}=={version}"
        settings = self._get_project_settings()
        self.assertIn("ProjectSettings", settings)
        self.assertIn("Dependencies", settings["ProjectSettings"])
        self.assertIn("DevDependencies", settings["ProjectSettings"])
        self.assertNotIn(package, settings["ProjectSettings"]["Dependencies"])
        self.assertIn("DevDependencies", settings["ProjectSettings"])
        self.assertNotIn(package, settings["ProjectSettings"]["Dependencies"])
        settings["ProjectSettings"]["Dependencies"].append(package)
        settings["ProjectSettings"]["DevDependencies"].append(package)
        self._save_project_settings(settings)
        CLICommands.install()
        new_settings = self._get_project_settings()
        self.assertEqual(settings, new_settings)
        self.assertIn("ProjectSettings", new_settings)
        self.assertIn("Dependencies", new_settings["ProjectSettings"])
        self.assertIn("DevDependencies", new_settings["ProjectSettings"])
        self.assertIn(package, new_settings["ProjectSettings"]["Dependencies"])
        self.assertIn(package, new_settings["ProjectSettings"]["DevDependencies"])
        packages = self._get_installed_packages()
        self.assertIn(package_name, packages)
        self.assertEqual(version, packages[package_name])