# ABOUTME: End-to-end tests for migration CLI commands.
# ABOUTME: Tests migrate and create-migration commands via subprocess.

import os
import subprocess
import sys
from pathlib import Path

# Get the project root directory (parent of tests/)
PROJECT_ROOT = Path(__file__).parent.parent


class TestMigrateCLI:
    """End-to-end tests for migrate command."""

    def test_migrate_command_success(self, tmp_path, temp_migrations_dir):
        """Should run migrations via CLI and exit 0."""
        # Use a path that doesn't exist yet
        db_path = tmp_path / "test.db"

        # Create a migration file
        migration_file = temp_migrations_dir / "0001-test.sql"
        migration_file.write_text("CREATE TABLE test (id INTEGER PRIMARY KEY);")

        # Set required env vars with PYTHONPATH to find the package
        # Note: Settings uses no env_prefix, so use DB_PATH not AT_DB_PATH
        env = os.environ.copy()
        env["DB_PATH"] = str(db_path)
        env["CSRF_SECRET"] = "test-secret-for-csrf"
        env["PYTHONPATH"] = str(PROJECT_ROOT / "src")

        # Run migrate command
        result = subprocess.run(
            [sys.executable, "-m", "animaltrack.cli", "migrate"],
            capture_output=True,
            text=True,
            env=env,
            cwd=str(temp_migrations_dir.parent),
        )

        assert result.returncode == 0, f"stdout: {result.stdout}, stderr: {result.stderr}"
        assert "success" in result.stdout.lower() or "completed" in result.stdout.lower()

    def test_migrate_command_no_migrations(self, tmp_path, temp_migrations_dir):
        """Should succeed when no migrations to run."""
        # Use a path that doesn't exist yet
        db_path = tmp_path / "test.db"

        # Set required env vars
        env = os.environ.copy()
        env["DB_PATH"] = str(db_path)
        env["CSRF_SECRET"] = "test-secret-for-csrf"
        env["PYTHONPATH"] = str(PROJECT_ROOT / "src")

        # Run migrate command with empty migrations dir
        result = subprocess.run(
            [sys.executable, "-m", "animaltrack.cli", "migrate"],
            capture_output=True,
            text=True,
            env=env,
            cwd=str(temp_migrations_dir.parent),
        )

        assert result.returncode == 0, f"stdout: {result.stdout}, stderr: {result.stderr}"

    def test_migrate_command_failure(self, tmp_path, temp_migrations_dir):
        """Should exit 1 on migration failure."""
        # Use a path that doesn't exist yet
        db_path = tmp_path / "test.db"

        # Create a broken migration file
        migration_file = temp_migrations_dir / "0001-broken.sql"
        migration_file.write_text("THIS IS INVALID SQL;")

        # Set required env vars
        env = os.environ.copy()
        env["DB_PATH"] = str(db_path)
        env["CSRF_SECRET"] = "test-secret-for-csrf"
        env["PYTHONPATH"] = str(PROJECT_ROOT / "src")

        # Run migrate command
        result = subprocess.run(
            [sys.executable, "-m", "animaltrack.cli", "migrate"],
            capture_output=True,
            text=True,
            env=env,
            cwd=str(temp_migrations_dir.parent),
        )

        assert result.returncode == 1


class TestCreateMigrationCLI:
    """End-to-end tests for create-migration command."""

    def test_create_migration_command(self, temp_migrations_dir):
        """Should create migration file via CLI."""
        # Set required env vars
        env = os.environ.copy()
        env["CSRF_SECRET"] = "test-secret-for-csrf"
        env["PYTHONPATH"] = str(PROJECT_ROOT / "src")

        # Run create-migration command
        result = subprocess.run(
            [sys.executable, "-m", "animaltrack.cli", "create-migration", "add users table"],
            capture_output=True,
            text=True,
            env=env,
            cwd=str(temp_migrations_dir.parent),
        )

        assert result.returncode == 0, f"stdout: {result.stdout}, stderr: {result.stderr}"

        # Verify file was created
        created_files = list(temp_migrations_dir.glob("0001-*.sql"))
        assert len(created_files) == 1
        assert "add-users-table" in created_files[0].name

    def test_create_migration_shows_path(self, temp_migrations_dir):
        """Should print path to created migration."""
        # Set required env vars
        env = os.environ.copy()
        env["CSRF_SECRET"] = "test-secret-for-csrf"
        env["PYTHONPATH"] = str(PROJECT_ROOT / "src")

        # Run create-migration command
        result = subprocess.run(
            [sys.executable, "-m", "animaltrack.cli", "create-migration", "test migration"],
            capture_output=True,
            text=True,
            env=env,
            cwd=str(temp_migrations_dir.parent),
        )

        assert result.returncode == 0
        assert "0001-test-migration.sql" in result.stdout

    def test_create_migration_increments_index(self, temp_migrations_dir):
        """Should create migrations with incrementing indexes."""
        # Set required env vars
        env = os.environ.copy()
        env["CSRF_SECRET"] = "test-secret-for-csrf"
        env["PYTHONPATH"] = str(PROJECT_ROOT / "src")

        # Create first migration
        subprocess.run(
            [sys.executable, "-m", "animaltrack.cli", "create-migration", "first"],
            capture_output=True,
            env=env,
            cwd=str(temp_migrations_dir.parent),
        )

        # Create second migration
        result = subprocess.run(
            [sys.executable, "-m", "animaltrack.cli", "create-migration", "second"],
            capture_output=True,
            text=True,
            env=env,
            cwd=str(temp_migrations_dir.parent),
        )

        assert result.returncode == 0
        assert "0002-second.sql" in result.stdout

    def test_create_migration_requires_description(self, temp_migrations_dir):
        """Should fail when description not provided."""
        env = os.environ.copy()
        env["CSRF_SECRET"] = "test-secret-for-csrf"
        env["PYTHONPATH"] = str(PROJECT_ROOT / "src")

        result = subprocess.run(
            [sys.executable, "-m", "animaltrack.cli", "create-migration"],
            capture_output=True,
            text=True,
            env=env,
            cwd=str(temp_migrations_dir.parent),
        )

        # argparse should reject missing required argument
        assert result.returncode != 0