"""Metrics, achievements and the rendered report."""

from __future__ import annotations

from datetime import timedelta

from app.models import utcnow
from app.services import pomodoro, report, settings_service, stats, tasks_service
from app.timeutil import local_date


def _close(session, settings, task) -> None:
    """Simulate what a refresh does when a task has been closed in its own tool."""
    task.is_done = True
    task.completed_at = utcnow()
    task.completed_date = local_date(settings.timezone)
    session.commit()


def _run_pomodoros(session, settings, count: int, *, minutes: int = 25) -> None:
    """Record `count` finished work intervals, backdated so they do not overlap."""
    for index in range(count):
        row = pomodoro.start(session, settings, kind="work", minutes=minutes)
        start = utcnow() - timedelta(minutes=(count - index) * (minutes + 5))
        row.started_at = start
        row.ended_at = start + timedelta(minutes=minutes)
        row.actual_seconds = minutes * 60
        row.status = "completed"
        session.commit()


def test_day_metrics_counts_what_happened(session, settings):
    _run_pomodoros(session, settings, 3)
    metrics = stats.day_metrics(session, settings, local_date(settings.timezone))
    assert metrics["pomodoros"] == 3
    assert metrics["focus_minutes"] == 75
    assert metrics["goal"] == settings.pomodoro.daily_goal_pomodoros
    assert metrics["first_start"] and metrics["last_end"]


def test_longest_stretch_joins_adjacent_pomodoros(session, settings):
    _run_pomodoros(session, settings, 3, minutes=25)
    metrics = stats.day_metrics(session, settings, local_date(settings.timezone))
    # 25-minute intervals five minutes apart are one unbroken stretch.
    assert metrics["longest_stretch_minutes"] >= 75


def test_streak_survives_an_empty_today(session, settings):
    today = local_date(settings.timezone)
    _run_pomodoros(session, settings, 1)

    # Move the work to yesterday and leave today empty.
    from app.models import PomodoroSession

    for row in session.query(PomodoroSession).all():
        row.local_date = today - timedelta(days=1)
    session.commit()

    streak = stats.streak(session, settings, until=today)
    assert streak["current"] == 1


def test_report_payload_has_the_pieces_the_ui_draws(session, settings):
    settings.pomodoro.daily_goal_pomodoros = 2
    settings_service.save_settings(session, settings)
    _run_pomodoros(session, settings, 2)
    task = tasks_service.create_local_task(session, title="Ship the thing")
    _close(session, settings, task)

    payload = report.build_daily(session, settings, local_date(settings.timezone))
    assert payload["metrics"]["pomodoros"] == 2
    assert payload["metrics"]["tasks_completed_count"] == 1
    assert any(item["code"] == "goal_met" for item in payload["achievements"])
    assert payload["fun_facts"]
    assert 0 <= payload["score"] <= 100


def test_rendered_report_escapes_borrowed_text(session, settings):
    task = tasks_service.create_local_task(session, title="Fix <b>&</b> ship")
    _close(session, settings, task)
    payload = report.build_daily(session, settings, local_date(settings.timezone))
    text = report.render_daily_telegram(payload, settings)
    assert "Fix &lt;b&gt;&amp;&lt;/b&gt; ship" in text


def test_russian_report_renders(session, settings):
    settings.notifications.report.language = "ru"
    settings.notifications.report.tone = "drill_sergeant"
    settings_service.save_settings(session, settings)
    _run_pomodoros(session, settings, 1)
    payload = report.build_daily(session, settings, local_date(settings.timezone))
    text = report.render_daily_telegram(payload, settings)
    assert "Отчёт за день" in text


def test_weekly_review_covers_seven_days(session, settings):
    _run_pomodoros(session, settings, 2)
    payload = report.build_weekly(session, settings, local_date(settings.timezone))
    assert len(payload["days"]) == 7
    assert payload["pomodoros"] == 2
    assert "Weekly review" in report.render_weekly_telegram(payload, settings)


def test_progress_bar_is_proportional():
    assert report.progress_bar(0, 8) == "░" * 10
    assert report.progress_bar(8, 8) == "█" * 10
    assert report.progress_bar(4, 8).count("█") == 5