"""Shared test fixtures."""

import pandas as pd
import pytest
from pathlib import Path

SAMPLES_DIR = Path(__file__).parent.parent / "samples"


@pytest.fixture
def sample_csv_path():
    return SAMPLES_DIR / "messy_sales.csv"


@pytest.fixture
def sample_df(sample_csv_path):
    return pd.read_csv(sample_csv_path, dtype=str, keep_default_na=False)


@pytest.fixture
def simple_df():
    """Small DataFrame with obvious duplicates for unit testing."""
    return pd.DataFrame({
        "name": ["Alice", "alice", "Bob", "Charlie", "ALICE"],
        "email": ["alice@test.com", "alice@test.com", "bob@test.com",
                  "charlie@test.com", "alice@test.com"],
        "phone": ["555-1234", "555-1234", "555-5678", "555-9012", "555-1234"],
    })


@pytest.fixture
def merge_df():
    """DataFrame with partial records that benefit from merge."""
    return pd.DataFrame({
        "name": ["John Doe", "John Doe", "Jane Smith"],
        "email": ["john@test.com", "john@test.com", "jane@test.com"],
        "phone": ["555-1111", "", "555-3333"],
        "address": ["", "123 Main St", "456 Oak Ave"],
    })


@pytest.fixture
def tmp_csv(tmp_path, simple_df):
    """Write simple_df to a temp CSV and return the path."""
    path = tmp_path / "test_input.csv"
    simple_df.to_csv(path, index=False)
    return path