#!/usr/bin/env python

""" """

__author__ = "Théo de la Hogue"
__credits__ = []
__copyright__ = "Copyright 2023, Ecole Nationale de l'Aviation Civile (ENAC)"
__license__ = "BSD"

import unittest
from dataclasses import dataclass, field
import os

from argaze import DataFeatures

import pandas
import numpy

class BasicDataClass(DataFeatures.TimestampedObject):
    """Define a basic dataclass for testing purpose."""

    def __init__(self, value: tuple = (), **kwargs):

        DataFeatures.TimestampedObject.__init__(self, **kwargs)

        self.__value = value

    @property
    def value(self):
        return self.__value

def random_data_list(size):
    """ Generate a random TimestampedObjectsList for testing purpose.
        Timestamps are current time.
        Values are tuples containing an expected value and a random value.
    """
    import random
    import time

    data_list = []
    
    for i in range(0, size):

        # Edit data
        random_data = BasicDataClass((i, random.random()))
        
        # Timestamp data
        random_data.timestamp = time.time()

        # Store data
        data_list.append(random_data)

        time.sleep(0.0001)

    return DataFeatures.TimestampedObjectsList(BasicDataClass, data_list)

class TestTimestampedObjectsListClass(unittest.TestCase):
    """Test TimestampedObjectsList class."""

    def test_new(self):
        """Test TimestampedObjectsList creation."""
        
        # Check TimestampedObjectsList length after creation
        self.assertEqual(len(DataFeatures.TimestampedObjectsList(BasicDataClass)), 0)

        # Check TimestampedObjectsList timestamps after creation
        self.assertEqual(DataFeatures.TimestampedObjectsList(BasicDataClass).timestamps(), [])

        # Check TimestampedObjectsList items after creation
        self.assertEqual(DataFeatures.TimestampedObjectsList(BasicDataClass), [])

        # Check that TimestampedObjectsList creation fails when data are not timestamped
        with self.assertRaises(AssertionError):

            data_list = [BasicDataClass((0, 0))]
            DataFeatures.TimestampedObjectsList(BasicDataClass, data_list)
        
    def test_as_dataframe(self):
        """Test TimestampedObjectsList as_dataframe method."""

        data_frame = random_data_list(10).as_dataframe()

        # Check dataframe conversion
        self.assertEqual(data_frame.index.name, "timestamp")
        self.assertEqual(data_frame.index.size, 10)
        self.assertEqual(data_frame.columns.size, 1)
        self.assertEqual(data_frame.index.dtype, 'float64')
        self.assertEqual(data_frame["value"].dtype, 'object')

        # Check data exclusion option
        data_frame = random_data_list(10).as_dataframe(exclude=["value"])

        self.assertEqual(data_frame.index.name, "timestamp")
        self.assertEqual(data_frame.index.size, 10)
        self.assertEqual(data_frame.columns.size, 0)

        # Check dataframe split option
        data_frame = random_data_list(10).as_dataframe(split={"value": ["value_0", "value_1"]})

        self.assertEqual(data_frame.index.name, "timestamp")
        self.assertEqual(data_frame.index.size, 10)
        self.assertEqual(data_frame.columns.size, 2)
        self.assertEqual(data_frame["value_0"].dtype, 'int64')
        self.assertEqual(data_frame["value_1"].dtype, 'float64')
    
    def test_from_dataframe(self):
        """Test TimestampedObjectsList creation from pandas dataframe."""

        data_frame = random_data_list(10).as_dataframe()

        # Check dataframe conversion
        data_list = DataFeatures.TimestampedObjectsList.from_dataframe(BasicDataClass, data_frame)

        self.assertEqual(len(data_list), 10)
    @unittest.skip("DEBUG")
    def test_from_json(self):
        """Test TimestampedObjectsList creation from json file."""

        # Edit dataframe csv file path
        current_directory = os.path.dirname(os.path.abspath(__file__))
        json_filepath = os.path.join(current_directory, 'utils/ts_buffer.json')

        # Load TimestampedObjectsList from json file
        ts_buffer = DataFeatures.TimestampedObjectsList.from_json(json_filepath)

        self.assertEqual(len(ts_buffer), 3)
    @unittest.skip("DEBUG")
    def test___repr__(self):
        """Test TimestampedObjectsList string representation."""

        self.assertEqual(repr(DataFeatures.TimestampedObjectsList()), "{}")
        self.assertEqual(repr(DataFeatures.TimestampedObjectsList({0: ""})), "{\"0\": \"\"}")
        self.assertEqual(repr(DataFeatures.TimestampedObjectsList({0.1: ""})), "{\"0.1\": \"\"}")

        data = BasicDataClass((123, 456))
        ts_buffer = DataFeatures.TimestampedObjectsList({0: data})

        self.assertEqual(repr(ts_buffer), "{\"0\": {\"value\": [123, 456]}}")

        array = numpy.zeros(3)
        ts_buffer = DataFeatures.TimestampedObjectsList({0: array})

        self.assertEqual(repr(ts_buffer), "{\"0\": [0.0, 0.0, 0.0]}")
    @unittest.skip("DEBUG")
    def test___str__(self):
        """Test TimestampedObjectsList string representation."""

        self.assertEqual(str(DataFeatures.TimestampedObjectsList()), "{}")
        self.assertEqual(str(DataFeatures.TimestampedObjectsList({0: ""})), "{\"0\": \"\"}")
        self.assertEqual(str(DataFeatures.TimestampedObjectsList({0.1: ""})), "{\"0.1\": \"\"}")

        data = BasicDataClass((123, 456))
        ts_buffer = DataFeatures.TimestampedObjectsList({0: data})

        self.assertEqual(str(ts_buffer), "{\"0\": {\"value\": [123, 456]}}")

        array = numpy.zeros(3)
        ts_buffer = DataFeatures.TimestampedObjectsList({0: array})

        self.assertEqual(str(ts_buffer), "{\"0\": [0.0, 0.0, 0.0]}")
    @unittest.skip("DEBUG")
    def test_append(self):
        """Test TimestampedObjectsList append method."""

        ts_buffer = DataFeatures.TimestampedObjectsList({0: "A", 1: "B"})
        ts_buffer_next = DataFeatures.TimestampedObjectsList({2: "C", 3: "D"})

        self.assertEqual(len(ts_buffer.append(ts_buffer_next)), 4)
        self.assertEqual(list(ts_buffer.append(ts_buffer_next).keys()), [0, 1, 2, 3])
    @unittest.skip("DEBUG")
    def test_first(self):
        """Test TimestampedObjectsList first property."""

        self.assertEqual(DataFeatures.TimestampedObjectsList({0: "A", 1: "B"}).first, (0, "A"))

        # Check that accessing to first item of an empty TimestampedObjectsList fails
        with self.assertRaises(IndexError):

            DataFeatures.TimestampedObjectsList().first
    @unittest.skip("DEBUG")
    def test_pop_first(self):
        """Test TimestampedObjectsList pop_first method."""

        ts_buffer = DataFeatures.TimestampedObjectsList({0: "A", 1: "B"})

        self.assertEqual(ts_buffer.pop_first(), (0, "A"))
        self.assertEqual(len(ts_buffer), 1)
        self.assertEqual(ts_buffer.first, (1, "B"))
    @unittest.skip("DEBUG")
    def test_pop_last_until(self):
        """Test TimestampedObjectsList pop_last_until method."""

        ts_buffer = DataFeatures.TimestampedObjectsList({0: "A", 1: "B", 2: "C", 3: "D"})

        # Check pop until an existing timestamp
        pop_last_until_2 = ts_buffer.pop_last_until(2)

        self.assertEqual(pop_last_until_2, (2, "C"))
        self.assertEqual(len(ts_buffer), 2)
        self.assertEqual(ts_buffer.first, (2, "C"))

        # Check first until an none existing timestamp
        ts_buffer = DataFeatures.TimestampedObjectsList({0: "A", 1: "B", 2: "C", 3: "D"})

        pop_last_until_1dot5 = ts_buffer.pop_last_until(1.5)

        self.assertEqual(pop_last_until_1dot5, (1, "B"))
        self.assertEqual(len(ts_buffer), 3)
        self.assertEqual(ts_buffer.first, (1, "B"))
    @unittest.skip("DEBUG")
    def test_pop_last_before(self):
        """Test TimestampedObjectsList pop_last_before method."""

        ts_buffer = DataFeatures.TimestampedObjectsList({0: "A", 1: "B", 2: "C", 3: "D"})

        # Check pop until an existing timestamp
        last_before_2 = ts_buffer.pop_last_before(2)

        self.assertEqual(last_before_2, (1, "B"))
        self.assertEqual(len(ts_buffer), 2)
        self.assertEqual(ts_buffer.first, (2, "C"))

        # Check pop until an none existing timestamp
        ts_buffer = DataFeatures.TimestampedObjectsList({0: "A", 1: "B", 2: "C", 3: "D"})

        first_until_1dot5 = ts_buffer.pop_last_before(1.5)

        self.assertEqual(first_until_1dot5, (1, "B"))
        self.assertEqual(len(ts_buffer), 2)
        self.assertEqual(ts_buffer.first, (2, "C"))
    @unittest.skip("DEBUG")
    def test_last(self):
        """Test TimestampedObjectsList last property."""

        self.assertEqual(DataFeatures.TimestampedObjectsList({0: "A", 1: "B"}).last, (1, "B"))

        # Check that accessing to last item of an empty TimestampedObjectsList fails
        with self.assertRaises(IndexError):

            DataFeatures.TimestampedObjectsList().last
    @unittest.skip("DEBUG")
    def test_pop_last(self):
        """Test TimestampedObjectsList pop_last method."""

        ts_buffer = DataFeatures.TimestampedObjectsList({0: "A", 1: "B"})

        self.assertEqual(ts_buffer.pop_last(), (1, "B"))
        self.assertEqual(len(ts_buffer), 1)
        self.assertEqual(ts_buffer.last, (0, "A"))
    @unittest.skip("DEBUG")
    def test_get_first_from(self):
        """Test TimestampedObjectsList get_first_from method."""

        ts_buffer = DataFeatures.TimestampedObjectsList({0: "A", 1: "B", 2: "C", 3: "D"})

        get_first_from_1 = ts_buffer.get_first_from(1)

        self.assertEqual(get_first_from_1, (1, "B"))
        self.assertEqual(len(ts_buffer), 4)

        get_first_from_1dot5 = ts_buffer.get_first_from(1.5)

        self.assertEqual(get_first_from_1dot5, (2, "C"))

        get_first_from_0 = ts_buffer.get_first_from(0)

        self.assertEqual(get_first_from_0, (0, "A"))

        # Check that accessing to lately timestamp fails
        with self.assertRaises(KeyError):

            ts_buffer.get_first_from(4)
    @unittest.skip("DEBUG")
    def test_get_last_before(self):
        """Test TimestampedObjectsList get_last_before method."""

        ts_buffer = DataFeatures.TimestampedObjectsList({0: "A", 1: "B", 2: "C", 3: "D"})

        get_last_before_2 = ts_buffer.get_last_before(2)

        self.assertEqual(get_last_before_2, (1, "B"))
        self.assertEqual(len(ts_buffer), 4)

        get_last_before_1dot5 = ts_buffer.get_last_before(1.5)

        self.assertEqual(get_last_before_1dot5, (1, "B"))

        get_last_before_4 = ts_buffer.get_last_before(4)

        self.assertEqual(get_last_before_4, (3, "D"))

        # Check that accessing to early timestamp fails
        with self.assertRaises(KeyError):

            ts_buffer.get_last_before(-1)  
    @unittest.skip("DEBUG")       
    def test_get_last_until(self):
        """Test TimestampedObjectsList get_last_until method."""

        ts_buffer = DataFeatures.TimestampedObjectsList({0: "A", 1: "B", 2: "C", 3: "D"})

        get_last_until_2 = ts_buffer.get_last_until(2)

        self.assertEqual(get_last_until_2, (2, "C"))
        self.assertEqual(len(ts_buffer), 4)

        get_last_until_1dot5 = ts_buffer.get_last_until(1.5)

        self.assertEqual(get_last_until_1dot5, (1, "B"))

        get_last_until_4 = ts_buffer.get_last_until(4)

        self.assertEqual(get_last_until_4, (3, "D"))

        # Check that accessing to early timestamp fails
        with self.assertRaises(KeyError):

            ts_buffer.get_last_until(-1)

if __name__ == '__main__':

    unittest.main()