from __future__ import annotations

import subprocess
import sys
import tempfile
import unittest
import shutil
from datetime import date
from pathlib import Path


SCRIPT = Path(__file__).resolve().parents[1] / "scripts" / "create_novel_project.py"
PLUGIN_ROOT = Path(__file__).resolve().parents[3]


class CreateNovelProjectTests(unittest.TestCase):
    def run_initializer(self, destination: Path, *arguments: str) -> subprocess.CompletedProcess[str]:
        return subprocess.run(
            [
                sys.executable,
                str(SCRIPT),
                "--project-root",
                str(destination),
                *arguments,
            ],
            check=False,
            capture_output=True,
            text=True,
        )

    def test_initializes_configured_project(self) -> None:
        with tempfile.TemporaryDirectory() as temporary_directory:
            destination = Path(temporary_directory) / "book"
            result = self.run_initializer(
                destination,
                "--title",
                "기억의 색인",
                "--language",
                "ko-KR",
            )

            self.assertEqual(result.returncode, 0, result.stdout + result.stderr)
            project = (destination / "project.md").read_text(encoding="utf-8")
            self.assertIn('title: "기억의 색인"', project)
            self.assertIn("language: ko-KR", project)
            self.assertIn("# 기억의 색인", project)
            self.assertIn(f"created: {date.today().isoformat()}", project)
            self.assertTrue((destination / "chapters" / "_template.md").is_file())
            self.assertTrue((destination / "published" / ".gitignore").is_file())
            self.assertEqual(
                (destination / "CLAUDE.md").read_text(encoding="utf-8").strip(),
                "@AGENTS.md",
            )
            self.assertFalse((destination / ".agents" / "skills").exists())

    def test_collision_preflight_writes_nothing(self) -> None:
        with tempfile.TemporaryDirectory() as temporary_directory:
            destination = Path(temporary_directory) / "book"
            destination.mkdir()
            existing_project = destination / "project.md"
            existing_project.write_text("keep me\n", encoding="utf-8")

            result = self.run_initializer(destination)

            self.assertNotEqual(result.returncode, 0)
            self.assertEqual(existing_project.read_text(encoding="utf-8"), "keep me\n")
            self.assertFalse((destination / "chapters").exists())

    def test_force_rejects_symlink_escape_before_writing(self) -> None:
        with tempfile.TemporaryDirectory() as temporary_directory:
            temporary_root = Path(temporary_directory)
            destination = temporary_root / "book"
            outside = temporary_root / "outside"
            destination.mkdir()
            outside.mkdir()
            (destination / "assets").symlink_to(outside, target_is_directory=True)

            result = self.run_initializer(destination, "--force")

            self.assertNotEqual(result.returncode, 0)
            self.assertIn("symbolic link", result.stdout)
            self.assertFalse((destination / "project.md").exists())
            self.assertEqual(list(outside.iterdir()), [])

    def test_rejects_multiline_title_before_writing(self) -> None:
        with tempfile.TemporaryDirectory() as temporary_directory:
            destination = Path(temporary_directory) / "book"

            result = self.run_initializer(destination, "--title", "Line one\nLine two")

            self.assertNotEqual(result.returncode, 0)
            self.assertFalse(destination.exists())

    def test_initializes_from_an_isolated_plugin_copy(self) -> None:
        with tempfile.TemporaryDirectory() as temporary_directory:
            temporary_root = Path(temporary_directory)
            isolated_plugin = temporary_root / "plugin-cache" / "novelist"
            shutil.copytree(
                PLUGIN_ROOT,
                isolated_plugin,
                ignore=shutil.ignore_patterns("__pycache__", "*.pyc"),
            )
            isolated_script = (
                isolated_plugin
                / "skills"
                / "create-novel-project"
                / "scripts"
                / "create_novel_project.py"
            )
            destination = temporary_root / "book"

            result = subprocess.run(
                [
                    sys.executable,
                    str(isolated_script),
                    "--project-root",
                    str(destination),
                ],
                check=False,
                capture_output=True,
                text=True,
            )

            self.assertEqual(result.returncode, 0, result.stdout + result.stderr)
            self.assertTrue((destination / "project.md").is_file())
            self.assertTrue((destination / "CLAUDE.md").is_file())
            self.assertFalse((destination / ".agents" / "skills").exists())

    def test_rejects_destination_inside_plugin(self) -> None:
        destination = PLUGIN_ROOT / "temporary-project-test"
        result = self.run_initializer(destination)

        self.assertNotEqual(result.returncode, 0)
        self.assertIn("plugin installation", result.stdout)
        self.assertFalse(destination.exists())


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