from datetime import date, datetime, time, timedelta, timezone as dt_timezone

import jdatetime
from django.test import TestCase, override_settings

from apps.core.jalali import jalali_date, jalali_datetime, jalali_time
from apps.core.settings_service import SettingsService


class SettingsServiceTests(TestCase):
    def test_get_returns_schema_default(self):
        service = SettingsService()
        self.assertEqual(service.get("sms.provider"), "mock")
        self.assertIs(service.get("odoo.enabled"), False)
        self.assertEqual(service.get("camera.default_protocol"), "hls")
        self.assertIs(service.get("camera.enabled"), True)

    def test_set_and_get(self):
        service = SettingsService()
        service.set("odoo.url", "https://odoo.example.com")
        self.assertEqual(service.get("odoo.url"), "https://odoo.example.com")

    def test_secrets_are_masked(self):
        service = SettingsService()
        service.set("odoo.api_key", "super-secret")
        values = service.all_values()
        self.assertEqual(values["odoo.api_key"], "••••••")

    def test_camera_protocol_settings_are_in_schema(self):
        from apps.core.settings_registry import SETTINGS_SCHEMA

        keys = {e["key"] for e in SETTINGS_SCHEMA}
        self.assertIn("camera.default_protocol", keys)
        self.assertIn("camera.rtsp.transport", keys)
        self.assertIn("camera.webrtc.ice_servers", keys)
        proto = next(e for e in SETTINGS_SCHEMA if e["key"] == "camera.default_protocol")
        self.assertTrue(any(isinstance(o, dict) and o.get("value") == "rtsp" for o in proto["options"]))
        rtsp_transport = next(e for e in SETTINGS_SCHEMA if e["key"] == "camera.rtsp.transport")
        self.assertEqual(rtsp_transport["depends_on"], {"camera.default_protocol": ["rtsp"]})


class JalaliTests(TestCase):
    """The PDF and the customer SMS are the only places dates are rendered for
    humans; the API itself stays on ISO-8601."""

    def test_known_reference_dates(self):
        self.assertEqual(jalali_date(date(2026, 3, 21)), "1405/01/01")  # Nowruz 1405
        self.assertEqual(jalali_date(date(2026, 3, 14)), "1404/12/23")
        self.assertEqual(jalali_date(date(1979, 2, 11)), "1357/11/22")

    def test_round_trips_against_jdatetime_over_two_decades(self):
        """A conversion error here silently misdates a quality report."""
        day = date(2020, 1, 1)
        end = date(2040, 1, 1)
        while day < end:
            expected = jdatetime.date.fromgregorian(date=day)
            self.assertEqual(
                jalali_date(day),
                f"{expected.year:04d}/{expected.month:02d}/{expected.day:02d}",
            )
            day += timedelta(days=1)

    def test_accepts_iso_strings(self):
        self.assertEqual(jalali_date("2026-03-14"), "1404/12/23")
        self.assertEqual(jalali_datetime("2026-03-14T05:00:00+00:00")[:10], "1404/12/23")

    def test_blank_and_malformed_input_is_empty_not_an_error(self):
        for value in (None, "", "not-a-date", 0):
            self.assertEqual(jalali_date(value), "")
            self.assertEqual(jalali_datetime(value), "")

    @override_settings(TIME_ZONE="Asia/Tehran")
    def test_aware_datetimes_render_in_the_project_time_zone(self):
        # 20:30Z is already the next calendar day in Tehran (+03:30).
        moment = datetime(2026, 3, 14, 20, 30, tzinfo=dt_timezone.utc)
        self.assertEqual(jalali_datetime(moment), "1404/12/24 00:00")

    @override_settings(TIME_ZONE="UTC")
    def test_aware_datetimes_follow_the_configured_zone(self):
        moment = datetime(2026, 3, 14, 20, 30, tzinfo=dt_timezone.utc)
        self.assertEqual(jalali_datetime(moment), "1404/12/23 20:30")

    def test_naive_datetimes_are_left_alone(self):
        self.assertEqual(jalali_datetime(datetime(2026, 3, 14, 8, 5)), "1404/12/23 08:05")

    def test_times(self):
        self.assertEqual(jalali_time(time(8, 0)), "08:00")
        self.assertEqual(jalali_time("08:30:15"), "08:30")
        self.assertEqual(jalali_time("09:05"), "09:05")
        self.assertEqual(jalali_time(""), "")