"""Shared pytest configuration for OpsBridge tests.

Registers capability and access_mode marks, and provides the
collect_capability_coverage() helper used by the cross-mode meta-test.
"""
from __future__ import annotations

import textwrap
from typing import Iterable

import pytest


# ---------------------------------------------------------------------------
# Shared fixtures
# ---------------------------------------------------------------------------

VALID_CONFIG = textwrap.dedent("""\
    tunnels:
      test-tunnel:
        host: host.local
        remote_port: 18000
        local_port: 8000
        ssh_user: ubuntu
        ssh_key: ~/.ssh/id_ops
        actor: adm-bernd
    actors:
      adm-bernd:
        class: adm
        description: Bernd
""")

VALID_CONFIG_WITH_CATALOG = textwrap.dedent("""\
    tunnels:
      test-tunnel:
        host: host.local
        remote_port: 18000
        local_port: 8000
        ssh_user: ubuntu
        ssh_key: ~/.ssh/id_ops
        actor: adm-bernd
    actors:
      adm-bernd:
        class: adm
        description: Bernd
    catalog_path: {catalog_path}
""")


@pytest.fixture
def config_file(tmp_path):
    f = tmp_path / "tunnels.yaml"
    f.write_text(VALID_CONFIG)
    return f


@pytest.fixture
def state_dir(tmp_path):
    d = tmp_path / "state"
    d.mkdir()
    return d


@pytest.fixture
def catalog_dir(tmp_path):
    """Minimal catalog directory with one domain, target, and bridge."""
    cat = tmp_path / "catalog"
    domain_dir = cat / "domains" / "coulombcore"
    domain_dir.mkdir(parents=True)
    (domain_dir / "domain.yaml").write_text(textwrap.dedent("""\
        type: domain
        id: coulombcore
        name: CoulombCore Infrastructure
        description: Core infrastructure domain
        environment: production
    """))
    targets_dir = domain_dir / "targets"
    targets_dir.mkdir()
    (targets_dir / "state-hub.yaml").write_text(textwrap.dedent("""\
        type: target
        id: state-hub
        domain: coulombcore
        kind: service
        description: Infrastructure state coordination service
        reachable_via:
          - state-hub-coulombcore
    """))
    bridges_dir = domain_dir / "bridges"
    bridges_dir.mkdir()
    (bridges_dir / "state-hub-coulombcore.yaml").write_text(textwrap.dedent("""\
        type: bridge
        id: state-hub-coulombcore
        domain: coulombcore
        target: state-hub
        description: Bridge to state hub
        access_method: ssh-reverse
        host: coulombcore.local
        remote_port: 18000
        local_port: 8000
        ssh_user: ubuntu
        ssh_key: ~/.ssh/id_ops
        actor: agent.claude-coulombcore
        reconnect:
          max_attempts: 0
          backoff_initial: 5
          backoff_max: 60
    """))
    actors_dir = cat / "actors"
    actors_dir.mkdir()
    (actors_dir / "agent.yaml").write_text(textwrap.dedent("""\
        type: actor
        id: agent.claude-coulombcore
        class: automation
        description: Claude Code agent on CoulombCore
    """))
    return cat


@pytest.fixture
def config_file_with_catalog(tmp_path, catalog_dir):
    f = tmp_path / "tunnels.yaml"
    f.write_text(VALID_CONFIG_WITH_CATALOG.format(catalog_path=str(catalog_dir)))
    return f


# ---------------------------------------------------------------------------
# Coverage collector helper
# ---------------------------------------------------------------------------

def collect_capability_coverage(items: Iterable) -> set[tuple[str, str]]:
    """Walk pytest items and return set of (capability_name, access_mode) pairs.

    Each test item is inspected for `capability` and `access_mode` markers.
    A pair is added for every combination of capability × access_mode marks
    found on a single item.

    Args:
        items: Iterable of pytest.Item objects (from session.items or similar).

    Returns:
        Set of (capability_name, access_mode) tuples found across all items.
    """
    covered: set[tuple[str, str]] = set()
    for item in items:
        capabilities = [
            m.args[0] for m in item.iter_markers("capability") if m.args
        ]
        modes = [
            m.args[0] for m in item.iter_markers("access_mode") if m.args
        ]
        for cap in capabilities:
            for mode in modes:
                covered.add((cap, mode))
    return covered