import unittest
import tempfile
import shutil
import os
from pathlib import Path
import subprocess
import sys
import yaml

SCRIPT_PATH = os.path.abspath(os.path.join(os.path.dirname(__file__), "../../../cli/validate_inventory.py"))

class TestValidateInventory(unittest.TestCase):
    def setUp(self):
        self.temp_dir = tempfile.mkdtemp()
        self.group_vars_all = Path(self.temp_dir) / "group_vars" / "all"
        self.group_vars_all.mkdir(parents=True)

        self.inventory_dir = Path(self.temp_dir) / "inventory"
        self.inventory_dir.mkdir()

        # Create default applications file
        self.default_applications = {
            "defaults_applications": {
                "app1": {
                    "port": 8080,
                    "enabled": True,
                    "settings": {
                        "theme": "dark"
                    }
                }
            }
        }
        (self.group_vars_all / "01_applications.yml").write_text(
            yaml.dump(self.default_applications), encoding="utf-8"
        )

        # Create default users file
        self.default_users = {
            "default_users": {
                "alice": {
                    "email": "alice@example.com",
                    "role": "admin"
                }
            }
        }
        (self.group_vars_all / "01_users.yml").write_text(
            yaml.dump(self.default_users), encoding="utf-8"
        )

    def tearDown(self):
        shutil.rmtree(self.temp_dir)

    def run_script(self, expected_code=0):
        result = subprocess.run(
            [sys.executable, SCRIPT_PATH, str(self.inventory_dir)],
            stdout=subprocess.PIPE,
            stderr=subprocess.PIPE,
            encoding="utf-8",
            cwd=self.temp_dir
        )
        if result.returncode != expected_code:
            print("STDOUT:", result.stdout)
            print("STDERR:", result.stderr)
        return result

    def test_valid_inventory(self):
        (self.inventory_dir / "group_vars.yml").write_text(yaml.dump({
            "applications": {
                "app1": {
                    "port": 8080,
                    "enabled": True,
                    "settings": {
                        "theme": "dark"
                    }
                }
            },
            "users": {
                "alice": {
                    "email": "alice@example.com",
                    "role": "admin",
                    "password": "secret"
                }
            }
        }), encoding="utf-8")

        result = self.run_script(expected_code=0)
        self.assertIn("Inventory directory is valid against defaults", result.stdout)

    def test_unknown_user_warning(self):
        (self.inventory_dir / "invalid_users.yml").write_text(yaml.dump({
            "users": {
                "bob": {
                    "email": "bob@example.com",
                    "role": "user"
                }
            }
        }), encoding="utf-8")

        result = self.run_script(expected_code=0)
        self.assertIn("Warning", result.stderr)

    def test_missing_user_key_fails(self):
        (self.inventory_dir / "invalid_key.yml").write_text(yaml.dump({
            "users": {
                "alice": {
                    "email": "alice@example.com",
                    "role": "admin",
                    "extra": "unexpected"
                }
            }
        }), encoding="utf-8")

        result = self.run_script(expected_code=1)
        self.assertIn("Missing default for user 'alice': key 'extra'", result.stderr)

    def test_missing_application_key_fails(self):
        (self.inventory_dir / "missing_key.yml").write_text(yaml.dump({
            "applications": {
                "app1": {
                    "port": 8080,
                    "enabled": True,
                    "settings": {
                        "theme": "dark"
                    },
                    "extra_setting": True
                }
            }
        }), encoding="utf-8")

        result = self.run_script(expected_code=1)
        self.assertIn("Missing default for app1: extra_setting", result.stdout)

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