"""Unit tests for the Planka webhook parser.

Pure-function tests against ``parse_webhook`` using realistic Planka
webhook payload shapes. The parser is forgiving about missing ``included``
data (older Planka builds), so we mix payloads with and without it to
catch regressions in the fallback paths.
"""

from __future__ import annotations

from notify_bridge_core.models.events import EventType
from notify_bridge_core.providers.base import ServiceProviderType
from notify_bridge_core.providers.planka.event_parser import parse_webhook


_BASE_URL = "https://planka.example.com"


def _user() -> dict:
    return {"id": "u1", "username": "alexei", "name": "Alexei"}


def test_card_created() -> None:
    payload = {
        "user": _user(),
        "item": {
            "id": "c1",
            "name": "Implement metrics",
            "description": "Wire prometheus client.",
            "boardId": "b1",
            "listId": "l1",
            "position": 1,
        },
        "included": {
            "board": {"id": "b1", "name": "Roadmap"},
            "lists": [{"id": "l1", "name": "Todo"}],
        },
    }
    evt = parse_webhook("cardCreate", payload, provider_name="planka", base_url=_BASE_URL)
    assert evt is not None
    assert evt.event_type is EventType.CARD_CREATED
    assert evt.provider_type is ServiceProviderType.PLANKA
    assert evt.collection_id == "b1"
    assert evt.collection_name == "Roadmap"
    assert evt.extra["card_name"] == "Implement metrics"
    assert evt.extra["card_url"] == f"{_BASE_URL}/cards/c1"
    assert evt.extra["list_name"] == "Todo"
    assert evt.extra["sender"] == "alexei"


def test_card_moved_when_list_changes() -> None:
    """beforeUpdate.listId != item.listId is the signal Planka uses for a
    card move; the parser must promote the generic cardUpdate event into
    CARD_MOVED so trackers can subscribe to moves specifically."""
    payload = {
        "user": _user(),
        "beforeUpdate": {"listId": "l1"},
        "item": {
            "id": "c1",
            "name": "Implement metrics",
            "description": "",
            "boardId": "b1",
            "listId": "l2",
        },
        "included": {
            "board": {"id": "b1", "name": "Roadmap"},
            "lists": [
                {"id": "l1", "name": "Todo"},
                {"id": "l2", "name": "In progress"},
            ],
        },
    }
    evt = parse_webhook("cardUpdate", payload, provider_name="planka", base_url=_BASE_URL)
    assert evt is not None
    assert evt.event_type is EventType.CARD_MOVED
    assert evt.extra["old_list_id"] == "l1"
    assert evt.extra["new_list_id"] == "l2"
    assert evt.extra["old_list_name"] == "Todo"
    assert evt.extra["new_list_name"] == "In progress"


def test_card_update_without_list_change_is_card_updated() -> None:
    payload = {
        "user": _user(),
        "beforeUpdate": {"name": "Old name"},
        "item": {
            "id": "c1", "name": "New name", "description": "", "boardId": "b1", "listId": "l1",
        },
    }
    evt = parse_webhook("cardUpdate", payload, provider_name="planka", base_url=_BASE_URL)
    assert evt is not None
    assert evt.event_type is EventType.CARD_UPDATED


def test_comment_created() -> None:
    payload = {
        "user": _user(),
        "item": {
            "id": "cm1",
            "text": "LGTM, ship it.",
            "cardId": "c1",
            "userId": "u1",
        },
        "included": {
            "card": {"id": "c1", "name": "Implement metrics", "boardId": "b1"},
            "board": {"id": "b1", "name": "Roadmap"},
        },
    }
    evt = parse_webhook(
        "commentCreate", payload, provider_name="planka", base_url=_BASE_URL,
    )
    assert evt is not None
    assert evt.event_type is EventType.CARD_COMMENTED
    assert evt.collection_id == "b1"
    assert evt.extra["comment_text"] == "LGTM, ship it."
    assert evt.extra["card_id"] == "c1"
    assert evt.extra["card_url"] == f"{_BASE_URL}/cards/c1"


def test_task_completion_emits_only_on_transition() -> None:
    """Task updates should only produce TASK_COMPLETED when the task flips
    from incomplete to complete — toggling the description or other fields
    on a task that was already complete must NOT spam notifications."""
    completing = {
        "user": _user(),
        "beforeUpdate": {"isCompleted": False},
        "item": {"id": "t1", "name": "Step 1", "isCompleted": True, "cardId": "c1"},
        "included": {
            "card": {"id": "c1", "name": "Implement metrics", "boardId": "b1"},
            "board": {"id": "b1", "name": "Roadmap"},
        },
    }
    evt = parse_webhook("taskUpdate", completing, provider_name="planka", base_url=_BASE_URL)
    assert evt is not None
    assert evt.event_type is EventType.TASK_COMPLETED

    # Editing a task that was already completed -> no event.
    re_edit = {
        "user": _user(),
        "beforeUpdate": {"isCompleted": True},
        "item": {"id": "t1", "name": "Step 1 v2", "isCompleted": True, "cardId": "c1"},
    }
    assert parse_webhook("taskUpdate", re_edit, provider_name="planka", base_url=_BASE_URL) is None


def test_unknown_event_returns_none() -> None:
    assert parse_webhook("nonexistent", {"item": {}}, provider_name="planka", base_url="") is None