"""Unit tests for tech debt read model."""

from __future__ import annotations

from datetime import datetime, timedelta, timezone

from steering.read_models.tech_debt import compute_tech_debt_summary


def _ctx(*, backlog_items, actions, stale_days=30):
    class FakeCtx:
        initiative_id = "init-1"
        operating_context = {
            "backlog_vocabulary": {
                "kinds": ["story", "bug", "tech_debt"],
            },
            "agent_slot_config": {"stale_debt_days": stale_days},
        }

        @property
        def backlog_vocabulary(self):
            return self.operating_context["backlog_vocabulary"]

        @property
        def agent_slot_config(self):
            return self.operating_context["agent_slot_config"]

        @property
        def backlog_items(self):
            return backlog_items

        @property
        def actions(self):
            return actions

    return FakeCtx()


def test_tech_debt_summary_counts_open_and_stale():
    old = (datetime.now(timezone.utc) - timedelta(days=45)).isoformat()
    recent = datetime.now(timezone.utc).isoformat()
    summary = compute_tech_debt_summary(
        _ctx(
            backlog_items=[
                {
                    "id": "b1",
                    "title": "Alt",
                    "item_kind": "tech_debt",
                    "status": "new",
                    "created_at": old,
                },
                {
                    "id": "b2",
                    "title": "Neu",
                    "item_kind": "tech_debt",
                    "status": "triaged",
                    "created_at": recent,
                },
            ],
            actions=[
                {
                    "id": "a1",
                    "title": "AP Schuld",
                    "action_kind": "tech_debt",
                    "status": "open",
                    "created_at": old,
                }
            ],
        )
    )
    assert summary["enabled"] is True
    assert summary["total_open"] == 3
    assert summary["stale_count"] == 2


def test_tech_debt_disabled_when_not_in_vocabulary():
    ctx = _ctx(backlog_items=[], actions=[])
    ctx.operating_context["backlog_vocabulary"] = {"kinds": ["story", "bug"]}
    summary = compute_tech_debt_summary(ctx)
    assert summary["enabled"] is False
    assert summary["total_open"] == 0