"""Tests for the Tautulli webhook ingestor."""
from __future__ import annotations

import pytest

from app.ingest.tautulli import is_tautulli_payload, parse_webhook


# ---------------------------------------------------------------------------
# Sample payloads
# ---------------------------------------------------------------------------

_ERROR_PAYLOAD = {
    "action": "error",
    "timestamp": "1747195200",
    "user": "pyroballpcs",
    "player": "LG TV",
    "media_type": "episode",
    "title": "Episode 7",
    "grandparent_title": "Oshi no Ko",
    "quality": "1080p",
    "video_decision": "transcode",
    "audio_decision": "direct play",
    "error_message": "Lost connection to streaming client",
    "session_key": "abc123",
}

_BUFFER_PAYLOAD = {
    "action": "buffer",
    "timestamp": "1747195300",
    "user": "pyroballpcs",
    "player": "Roku",
    "media_type": "movie",
    "title": "Dune: Part Two",
    "grandparent_title": "",
    "quality": "4K",
    "video_decision": "direct play",
    "audio_decision": "direct play",
    "error_message": "",
    "session_key": "xyz789",
}

_PLAY_PAYLOAD = {
    "action": "play",
    "timestamp": "1747195400",
    "user": "alice",
    "player": "Chrome",
    "media_type": "episode",
    "title": "Pilot",
    "grandparent_title": "Severance",
    "quality": "1080p",
    "video_decision": "transcode",
    "audio_decision": "direct play",
    "error_message": "",
    "session_key": "def456",
}

_STOP_PAYLOAD = {
    "action": "stop",
    "timestamp": "1747195500",
    "user": "bob",
    "player": "Apple TV",
    "media_type": "movie",
    "title": "Arrival",
    "grandparent_title": "",
    "quality": "1080p",
    "video_decision": "direct play",
    "audio_decision": "direct play",
    "error_message": "",
    "session_key": "ghi789",
}


# ---------------------------------------------------------------------------
# is_tautulli_payload
# ---------------------------------------------------------------------------

class TestIsPayload:
    def test_valid_payload_detected(self):
        assert is_tautulli_payload(_ERROR_PAYLOAD)

    def test_missing_action_rejected(self):
        payload = {k: v for k, v in _ERROR_PAYLOAD.items() if k != "action"}
        assert not is_tautulli_payload(payload)

    def test_missing_session_key_rejected(self):
        payload = {k: v for k, v in _ERROR_PAYLOAD.items() if k != "session_key"}
        assert not is_tautulli_payload(payload)

    def test_empty_dict_rejected(self):
        assert not is_tautulli_payload({})

    def test_journald_like_rejected(self):
        assert not is_tautulli_payload({"__REALTIME_TIMESTAMP": "123", "MESSAGE": "hi"})


# ---------------------------------------------------------------------------
# parse_webhook — severity mapping
# ---------------------------------------------------------------------------

class TestSeverity:
    def test_error_action_maps_to_critical(self):
        entry = parse_webhook(_ERROR_PAYLOAD, [])
        assert entry.severity == "CRITICAL"

    def test_buffer_action_maps_to_warn(self):
        entry = parse_webhook(_BUFFER_PAYLOAD, [])
        assert entry.severity == "WARN"

    def test_play_action_maps_to_none(self):
        entry = parse_webhook(_PLAY_PAYLOAD, [])
        assert entry.severity is None

    def test_stop_action_maps_to_none(self):
        entry = parse_webhook(_STOP_PAYLOAD, [])
        assert entry.severity is None

    def test_unknown_action_maps_to_none(self):
        payload = {**_ERROR_PAYLOAD, "action": "watched"}
        entry = parse_webhook(payload, [])
        assert entry.severity is None


# ---------------------------------------------------------------------------
# parse_webhook — text formatting
# ---------------------------------------------------------------------------

class TestTextFormat:
    def test_error_text_starts_with_plex_error(self):
        entry = parse_webhook(_ERROR_PAYLOAD, [])
        assert entry.text.startswith("[plex:error]")

    def test_error_text_includes_error_message(self):
        entry = parse_webhook(_ERROR_PAYLOAD, [])
        assert "Lost connection to streaming client" in entry.text

    def test_buffer_text_starts_with_plex_buffer(self):
        entry = parse_webhook(_BUFFER_PAYLOAD, [])
        assert entry.text.startswith("[plex:buffer]")
        assert "buffering" in entry.text

    def test_play_text_starts_with_plex_play(self):
        entry = parse_webhook(_PLAY_PAYLOAD, [])
        assert entry.text.startswith("[plex:play]")

    def test_stop_text_starts_with_plex_stop(self):
        entry = parse_webhook(_STOP_PAYLOAD, [])
        assert entry.text.startswith("[plex:stop]")

    def test_tv_episode_formats_show_and_title(self):
        entry = parse_webhook(_ERROR_PAYLOAD, [])
        assert '"Oshi no Ko — Episode 7"' in entry.text

    def test_movie_omits_grandparent(self):
        entry = parse_webhook(_BUFFER_PAYLOAD, [])
        # grandparent_title is empty — should be just the title, no em dash
        assert '"Dune: Part Two"' in entry.text
        assert " — " not in entry.text

    def test_play_includes_stream_info(self):
        entry = parse_webhook(_PLAY_PAYLOAD, [])
        assert "1080p" in entry.text
        assert "transcode" in entry.text


# ---------------------------------------------------------------------------
# parse_webhook — timestamp handling
# ---------------------------------------------------------------------------

class TestTimestamp:
    def test_valid_timestamp_parsed(self):
        entry = parse_webhook(_ERROR_PAYLOAD, [])
        # epoch 1747195200 is a valid UTC time; iso must be non-empty
        assert entry.timestamp_iso
        assert "T" in entry.timestamp_iso  # ISO 8601 format

    def test_missing_timestamp_falls_back_to_now(self):
        payload = {**_ERROR_PAYLOAD, "timestamp": ""}
        entry = parse_webhook(payload, [])
        # Should still produce a valid ISO timestamp, not empty
        assert entry.timestamp_iso
        assert "T" in entry.timestamp_iso

    def test_zero_timestamp_falls_back_to_now(self):
        payload = {**_ERROR_PAYLOAD, "timestamp": "0"}
        entry = parse_webhook(payload, [])
        assert entry.timestamp_iso
        assert "T" in entry.timestamp_iso

    def test_missing_timestamp_key_falls_back(self):
        payload = {k: v for k, v in _ERROR_PAYLOAD.items() if k != "timestamp"}
        entry = parse_webhook(payload, [])
        assert entry.timestamp_iso
        assert "T" in entry.timestamp_iso


# ---------------------------------------------------------------------------
# parse_webhook — entry_id uniqueness
# ---------------------------------------------------------------------------

class TestEntryId:
    def test_different_timestamps_produce_different_ids(self):
        payload_a = {**_ERROR_PAYLOAD, "timestamp": "1747195200"}
        payload_b = {**_ERROR_PAYLOAD, "timestamp": "1747195201"}
        entry_a = parse_webhook(payload_a, [])
        entry_b = parse_webhook(payload_b, [])
        assert entry_a.entry_id != entry_b.entry_id

    def test_same_payload_produces_same_id(self):
        entry_a = parse_webhook(_ERROR_PAYLOAD, [])
        entry_b = parse_webhook(_ERROR_PAYLOAD, [])
        assert entry_a.entry_id == entry_b.entry_id


# ---------------------------------------------------------------------------
# parse_webhook — fixed fields
# ---------------------------------------------------------------------------

class TestFixedFields:
    def test_source_id_is_tautulli(self):
        entry = parse_webhook(_ERROR_PAYLOAD, [])
        assert entry.source_id == "tautulli"

    def test_repeat_count_is_one(self):
        entry = parse_webhook(_ERROR_PAYLOAD, [])
        assert entry.repeat_count == 1

    def test_out_of_order_is_false(self):
        entry = parse_webhook(_ERROR_PAYLOAD, [])
        assert entry.out_of_order is False

    def test_entry_id_is_nonempty_string(self):
        entry = parse_webhook(_ERROR_PAYLOAD, [])
        assert isinstance(entry.entry_id, str) and len(entry.entry_id) > 0