"""Tests related to petab.conditions"""
import os
import tempfile
from pathlib import Path

import numpy as np
import pandas as pd
import petab
import pytest
from petab import conditions
from petab.C import *


def test_get_parametric_overrides():

    condition_df = pd.DataFrame(data={
        CONDITION_ID: ['condition1', 'condition2'],
        CONDITION_NAME: ['', 'Condition 2'],
        'fixedParameter1': [1.0, 2.0]
    })

    assert conditions.get_parametric_overrides(condition_df) == []

    condition_df.fixedParameter1 = \
        condition_df.fixedParameter1.values.astype(int)

    assert conditions.get_parametric_overrides(condition_df) == []

    condition_df.loc[0, 'fixedParameter1'] = 'parameterId'

    assert conditions.get_parametric_overrides(condition_df) == ['parameterId']


def test_get_condition_df():
    """Test conditions.get_condition_df."""
    # condition df missing ids
    condition_df = pd.DataFrame(data={
        CONDITION_NAME: ['Condition 1', 'Condition 2'],
        'fixedParameter1': [1.0, 2.0]
    })

    with tempfile.NamedTemporaryFile(mode='w', delete=False) as fh:
        file_name = fh.name
        condition_df.to_csv(fh, sep='\t', index=False)

    with pytest.raises(KeyError):
        petab.get_condition_df(file_name)

    os.remove(file_name)

    # with ids
    condition_df = pd.DataFrame(data={
        CONDITION_ID: ['condition1', 'condition2'],
        CONDITION_NAME: ['', 'Condition 2'],
        'fixedParameter1': [1.0, 2.0]
    })

    with tempfile.NamedTemporaryFile(mode='w', delete=False) as fh:
        file_name = fh.name
        condition_df.to_csv(fh, sep='\t', index=False)

    df = petab.get_condition_df(file_name).replace(np.nan, '')
    assert (df == condition_df.set_index(CONDITION_ID)).all().all()

    os.remove(file_name)

    # test other arguments
    assert (petab.get_condition_df(condition_df) == condition_df).all().all()
    assert petab.get_condition_df(None) is None


def test_write_condition_df():
    """Test conditions.write_condition_df."""
    condition_df = pd.DataFrame(data={
        CONDITION_ID: ['condition1', 'condition2'],
        CONDITION_NAME: ['Condition 1', 'Condition 2'],
        'fixedParameter1': [1.0, 2.0]
    }).set_index(CONDITION_ID)

    with tempfile.TemporaryDirectory() as temp_dir:
        file_name = Path(temp_dir) / "conditions.tsv"
        petab.write_condition_df(condition_df, file_name)
        re_df = petab.get_condition_df(file_name)
        assert (condition_df == re_df).all().all()


def test_create_condition_df():
    """Test conditions.create_condition_df."""
    parameter_ids = ['par1', 'par2', 'par3']
    condition_ids = ['condition1', 'condition2']

    df = petab.create_condition_df(parameter_ids, condition_ids)

    expected = pd.DataFrame(data={
        CONDITION_ID: ['condition1', 'condition2'],
        'par1': [np.nan, np.nan],
        'par2': [np.nan, np.nan],
        'par3': [np.nan, np.nan]
    }).set_index(CONDITION_ID)

    assert ((df == expected) | df.isna() == expected.isna()).all().all()
