from __future__ import annotations

import json
import os
import subprocess
import sys
import unittest
from pathlib import Path


SKILL_DIR = Path(__file__).resolve().parents[1]
SRC_DIR = SKILL_DIR / "src"


class UsCpaCliSmokeTests(unittest.TestCase):
    def test_skill_scaffold_files_exist(self) -> None:
        self.assertTrue((SKILL_DIR / "SKILL.md").exists())
        self.assertTrue((SKILL_DIR / "pyproject.toml").exists())
        self.assertTrue((SKILL_DIR / "scripts" / "us-cpa").exists())
        self.assertTrue(
            (SKILL_DIR.parent.parent / "docs" / "us-cpa.md").exists()
        )

    def test_fixture_directories_exist(self) -> None:
        fixtures_dir = SKILL_DIR / "tests" / "fixtures"
        for name in ("irs", "facts", "documents", "returns"):
            self.assertTrue((fixtures_dir / name).exists())

    def run_cli(self, *args: str) -> subprocess.CompletedProcess[str]:
        env = os.environ.copy()
        env["PYTHONPATH"] = str(SRC_DIR)
        return subprocess.run(
            [sys.executable, "-m", "us_cpa.cli", *args],
            text=True,
            capture_output=True,
            env=env,
        )

    def test_help_lists_all_commands(self) -> None:
        result = self.run_cli("--help")

        self.assertEqual(result.returncode, 0, result.stderr)
        for command in (
            "question",
            "prepare",
            "review",
            "fetch-year",
            "extract-docs",
            "render-forms",
            "export-efile-ready",
        ):
            self.assertIn(command, result.stdout)

    def test_question_command_emits_json_by_default(self) -> None:
        result = self.run_cli("question", "--question", "What is the standard deduction?")

        self.assertEqual(result.returncode, 0, result.stderr)
        payload = json.loads(result.stdout)
        self.assertEqual(payload["command"], "question")
        self.assertEqual(payload["format"], "json")
        self.assertEqual(payload["question"], "What is the standard deduction?")

    def test_prepare_requires_case_dir(self) -> None:
        result = self.run_cli("prepare", "--tax-year", "2025")

        self.assertNotEqual(result.returncode, 0)
        self.assertIn("case directory", result.stderr.lower())


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