import pytest
from unittest import mock
from redmine_reporter.client import fetch_issues_with_spent_time


@mock.patch("redmine_reporter.client.Redmine")
def test_fetch_aggregates_hours_per_issue(mock_redmine_class):
    """Два time entry на одну задачу -- часы суммируются."""
    mock_redmine = mock_redmine_class.return_value
    mock_user = mock.MagicMock()
    mock_user.id = 123
    mock_redmine.user.get.return_value = mock_user

    mock_entry1 = mock.MagicMock()
    mock_entry1.issue.id = 101
    mock_entry1.hours = 2.0
    mock_entry2 = mock.MagicMock()
    mock_entry2.issue.id = 101
    mock_entry2.hours = 1.5
    mock_redmine.time_entry.filter.return_value = [mock_entry1, mock_entry2]

    mock_issue = mock.MagicMock()
    mock_issue.id = 101
    mock_issue.project = "Проект X"
    mock_issue.subject = "Тестовая задача"
    mock_issue.status = "New"
    mock_redmine.issue.filter.return_value = [mock_issue]

    result = fetch_issues_with_spent_time("2026-01-01", "2026-01-31")

    assert result is not None
    assert len(result) == 1
    issue, total_hours = result[0]
    assert total_hours == 3.5


@mock.patch("redmine_reporter.client.Redmine")
def test_fetch_returns_none_when_no_entries(mock_redmine_class):
    """Нет time entries -- возвращается None."""
    mock_redmine = mock_redmine_class.return_value
    mock_user = mock.MagicMock()
    mock_user.id = 1
    mock_redmine.user.get.return_value = mock_user
    mock_redmine.time_entry.filter.return_value = []

    result = fetch_issues_with_spent_time("2026-01-01", "2026-01-31")
    assert result is None


@mock.patch("redmine_reporter.client.Redmine")
def test_fetch_skips_entries_without_issue(mock_redmine_class):
    """Time entry без привязки к задаче игнорируется."""
    mock_redmine = mock_redmine_class.return_value
    mock_user = mock.MagicMock()
    mock_user.id = 1
    mock_redmine.user.get.return_value = mock_user

    # entry без issue атрибута
    entry_no_issue = mock.MagicMock(spec=["hours"])  # нет .issue
    entry_no_issue.hours = 1.0

    mock_redmine.time_entry.filter.return_value = [entry_no_issue]

    result = fetch_issues_with_spent_time("2026-01-01", "2026-01-31")
    assert result is None


@mock.patch("redmine_reporter.client.Redmine")
def test_fetch_multiple_issues(mock_redmine_class):
    """Несколько задач -- каждая с правильным суммарным временем."""
    mock_redmine = mock_redmine_class.return_value
    mock_user = mock.MagicMock()
    mock_user.id = 1
    mock_redmine.user.get.return_value = mock_user

    def make_entry(issue_id, hours):
        e = mock.MagicMock()
        e.issue.id = issue_id
        e.hours = hours
        return e

    mock_redmine.time_entry.filter.return_value = [
        make_entry(1, 1.0),
        make_entry(2, 2.0),
        make_entry(1, 0.5),
    ]

    mock_issue1 = mock.MagicMock()
    mock_issue1.id = 1
    mock_issue1.project = "P"
    mock_issue2 = mock.MagicMock()
    mock_issue2.id = 2
    mock_issue2.project = "P"
    mock_redmine.issue.filter.return_value = [mock_issue1, mock_issue2]

    result = fetch_issues_with_spent_time("2026-01-01", "2026-01-31")
    assert result is not None
    assert len(result) == 2

    hours_by_id = {issue.id: hours for issue, hours in result}
    assert hours_by_id[1] == 1.5
    assert hours_by_id[2] == 2.0