import csv
from datetime import datetime
from io import StringIO
from pathlib import Path

import pytest

from ereuse_devicehub.client import UserClient
from ereuse_devicehub.resources.action.models import Snapshot
from ereuse_devicehub.resources.documents import documents
from tests.conftest import file


def test_export_basic_snapshot(user: UserClient):
    """
    Test export device information in a csv file
    """
    snapshot, _ = user.post(file('basic.snapshot'), res=Snapshot)
    csv_str, _ = user.get(res=documents.DocumentDef.t,
                          item='devices/',
                          accept='text/csv',
                          query=[('filter', {'type': ['Computer']})])
    f = StringIO(csv_str)
    obj_csv = csv.reader(f, f)
    export_csv = list(obj_csv)

    # Open fixture csv and transform to list
    with Path(__file__).parent.joinpath('files').joinpath('basic.csv').open() as csv_file:
        obj_csv = csv.reader(csv_file)
        fixture_csv = list(obj_csv)

    assert isinstance(datetime.strptime(export_csv[1][8], '%c'), datetime), \
        'Register in field is not a datetime'

    # Pop dates fields from csv lists to compare them
    fixture_csv[1] = fixture_csv[1][:8] + fixture_csv[1][9:]
    export_csv[1] = export_csv[1][:8] + export_csv[1][9:]

    assert fixture_csv[0] == export_csv[0], 'Headers are not equal'
    assert fixture_csv[1] == export_csv[1], 'Computer information are not equal'


def test_export_full_snapshot(user: UserClient):
    """
    Test a export device with all information and a lot of components
    """
    snapshot, _ = user.post(file('real-eee-1001pxd.snapshot.11'), res=Snapshot)
    csv_str, _ = user.get(res=documents.DocumentDef.t,
                          item='devices/',
                          accept='text/csv',
                          query=[('filter', {'type': ['Computer']})])
    f = StringIO(csv_str)
    obj_csv = csv.reader(f, f)
    export_csv = list(obj_csv)

    # Open fixture csv and transform to list
    with Path(__file__).parent.joinpath('files').joinpath('real-eee-1001pxd.csv').open() \
            as csv_file:
        obj_csv = csv.reader(csv_file)
        fixture_csv = list(obj_csv)

    assert isinstance(datetime.strptime(export_csv[1][8], '%c'), datetime), \
        'Register in field is not a datetime'

    # Pop dates fields from csv lists to compare them
    fixture_csv[1] = fixture_csv[1][:8] + fixture_csv[1][9:]
    export_csv[1] = export_csv[1][:8] + export_csv[1][9:]

    assert fixture_csv[0] == export_csv[0], 'Headers are not equal'
    assert fixture_csv[1] == export_csv[1], 'Computer information are not equal'


def test_export_empty(user: UserClient):
    """
    Test to check works correctly exporting csv without any information (no snapshot)
    """
    csv_str, _ = user.get(res=documents.DocumentDef.t,
                          accept='text/csv',
                          item='devices/')
    f = StringIO(csv_str)
    obj_csv = csv.reader(f, f)
    export_csv = list(obj_csv)

    assert len(export_csv) == 0, 'Csv is not empty'


def test_export_computer_monitor(user: UserClient):
    """
    Test a export device type computer monitor
    """
    snapshot, _ = user.post(file('computer-monitor.snapshot'), res=Snapshot)
    csv_str, _ = user.get(res=documents.DocumentDef.t,
                          item='devices/',
                          accept='text/csv',
                          query=[('filter', {'type': ['ComputerMonitor']})])
    f = StringIO(csv_str)
    obj_csv = csv.reader(f, f)
    export_csv = list(obj_csv)
    # Open fixture csv and transform to list
    with Path(__file__).parent.joinpath('files').joinpath('computer-monitor.csv').open() \
            as csv_file:
        obj_csv = csv.reader(csv_file)
        fixture_csv = list(obj_csv)

    # Pop dates fields from csv lists to compare them
    fixture_csv[1] = fixture_csv[1][:8]
    export_csv[1] = export_csv[1][:8]

    assert fixture_csv[0] == export_csv[0], 'Headers are not equal'
    assert fixture_csv[1] == export_csv[1], 'Component information are not equal'


def test_export_keyboard(user: UserClient):
    """
    Test a export device type keyboard
    """
    snapshot, _ = user.post(file('keyboard.snapshot'), res=Snapshot)
    csv_str, _ = user.get(res=documents.DocumentDef.t,
                          item='devices/',
                          accept='text/csv',
                          query=[('filter', {'type': ['Keyboard']})])
    f = StringIO(csv_str)
    obj_csv = csv.reader(f, f)
    export_csv = list(obj_csv)
    # Open fixture csv and transform to list
    with Path(__file__).parent.joinpath('files').joinpath('keyboard.csv').open() as csv_file:
        obj_csv = csv.reader(csv_file)
        fixture_csv = list(obj_csv)

    # Pop dates fields from csv lists to compare them
    fixture_csv[1] = fixture_csv[1][:8]
    export_csv[1] = export_csv[1][:8]

    assert fixture_csv[0] == export_csv[0], 'Headers are not equal'
    assert fixture_csv[1] == export_csv[1], 'Component information are not equal'


def test_export_multiple_different_devices(user: UserClient):
    """
    Test function 'Export' of multiple different device types (like
    computers, keyboards, monitors, etc..)
    """
    # Open fixture csv and transform to list
    with Path(__file__).parent.joinpath('files').joinpath('multiples_devices.csv').open() \
            as csv_file:
        fixture_csv = list(csv.reader(csv_file))
    for row in fixture_csv:
        del row[8]  # We remove the 'Registered in' column

    # Post all devices snapshots
    snapshot_pc, _ = user.post(file('real-eee-1001pxd.snapshot.11'), res=Snapshot)
    snapshot_empty, _ = user.post(file('basic.snapshot'), res=Snapshot)
    snapshot_keyboard, _ = user.post(file('keyboard.snapshot'), res=Snapshot)
    snapshot_monitor, _ = user.post(file('computer-monitor.snapshot'), res=Snapshot)

    csv_str, _ = user.get(res=documents.DocumentDef.t,
                          item='devices/',
                          query=[('filter', {'type': ['Computer', 'Keyboard', 'Monitor']})],
                          accept='text/csv')
    f = StringIO(csv_str)
    obj_csv = csv.reader(f, f)
    export_csv = list(obj_csv)

    for row in export_csv:
        del row[8]

    assert fixture_csv == export_csv