import sqlite3
import tempfile
from pathlib import Path

import pytest

from scripts.import_excel import DEFAULT_DATABASE, import_data, inspect_database, verify_import


def database_file():
    directory = tempfile.TemporaryDirectory()
    path = Path(directory.name) / "calendar.sqlite"
    with sqlite3.connect(path) as database:
        database.execute(
            "CREATE TABLE date_choices (choice_date TEXT PRIMARY KEY, amount_cents INTEGER, updated_at TEXT DEFAULT CURRENT_TIMESTAMP)"
        )
        database.execute(
            "CREATE TABLE date_statuses (status_date TEXT PRIMARY KEY, day_status TEXT, updated_at TEXT DEFAULT CURRENT_TIMESTAMP)"
        )
    return directory, path


def test_default_database_is_anchored_to_project_directory():
    assert DEFAULT_DATABASE.is_absolute()
    assert DEFAULT_DATABASE.name == "calendar.sqlite"
    assert DEFAULT_DATABASE.parent.name == "instance"


def test_database_inspection_rejects_missing_or_wrong_database():
    with tempfile.TemporaryDirectory() as directory:
        missing = Path(directory) / "missing.sqlite"
        with pytest.raises(RuntimeError, match="does not exist"):
            inspect_database(missing)

        wrong = Path(directory) / "wrong.sqlite"
        with sqlite3.connect(wrong) as database:
            database.execute("CREATE TABLE something_else (value TEXT)")
        with pytest.raises(RuntimeError, match="wrong schema"):
            inspect_database(wrong)


def test_import_creates_backup_and_verifies_committed_values():
    directory, path = database_file()
    try:
        backup = import_data(
            path,
            {"2026-07-15": 2750},
            {"2026-07-16": "vacation"},
        )

        assert backup.is_file()
        assert inspect_database(path) == (1, 1, "2026-07-15", "2026-07-16")
        verify_import(path, {"2026-07-15": 2750}, {"2026-07-16": "vacation"})
        assert inspect_database(backup) == (0, 0, None, None)
    finally:
        directory.cleanup()


def test_verification_detects_values_that_do_not_match():
    directory, path = database_file()
    try:
        with pytest.raises(RuntimeError, match="verification failed"):
            verify_import(path, {"2026-07-15": 5500}, {})
    finally:
        directory.cleanup()