"""Test: Contacts plugin lifecycle — deactivation deregisters everything.

Verifies that when the Contacts plugin is deactivated:
- Entity models (contact, contacts, company) are removed from ENTITY_MODELS
- Permissions (contacts:read, contacts:write, contacts:delete) are unregistered
- Restore config for 'contact' entity type is removed
- History hooks for 'contact' are unregistered
- The app still starts and core functionality works
"""

from __future__ import annotations

import pytest

from app.core.restore_registry import get_restore_registry, reset_restore_registry_for_testing
from app.core.hooks import get_hook_registry
from app.core.permission_registry import (
    get_permission_registry,
    init_permission_registry,
)
from app.services.entity_permission_service import ENTITY_MODELS


class TestContactsPluginLifecycle:
    """Test Contacts plugin full lifecycle — activate, deactivate, verify deregistration."""

    @pytest.fixture(autouse=True)
    def _setup_registries(self):
        """Reset registries before each test."""
        reset_restore_registry_for_testing()
        init_permission_registry(set())
        get_hook_registry()._reset_for_testing()
        yield
        # Cleanup
        reset_restore_registry_for_testing()
        init_permission_registry(set())
        get_hook_registry()._reset_for_testing()

    def test_contacts_plugin_registers_on_activate(self):
        """ContactsPlugin.on_activate registers entity models, permissions, restore, history."""
        from app.plugins.builtins.contacts.plugin import ContactsPlugin
        from unittest.mock import AsyncMock, MagicMock

        plugin = ContactsPlugin()

        # Before activation: nothing registered
        reg = get_restore_registry()
        assert not reg.is_registered("contact")
        # Audit P2 (false-green): this used to be
        # ``assert "contact" not in ENTITY_MODELS or True`` — always true.
        # Entity models are registered by the conftest bootstrap for ALL
        # discovered plugins (mirroring main.py), so "contact" IS present
        # before on_activate; what must NOT be registered yet is the
        # restore config (checked above) and the plugin gate:
        assert not get_permission_registry().is_plugin_active("contacts")

        # Activate
        import asyncio
        db = AsyncMock()
        container = MagicMock()
        event_bus = MagicMock()
        event_bus.subscribe = MagicMock()
        event_bus.unsubscribe = MagicMock()

        asyncio.get_event_loop().run_until_complete(
            plugin.on_activate(db, container, event_bus)
        )

        # Verify restore config registered
        assert reg.is_registered("contact")
        config = reg.get("contact")
        assert config is not None
        assert config.restore_permission == "contacts:write"

        # Verify history hooks registered (hook registry has actions)
        hook_reg = get_hook_registry()
        # The hooks should be registered for contact.after_create/update/delete
        all_hooks = hook_reg._actions if hasattr(hook_reg, '_actions') else {}
        assert any("contact.after_create" in k for k in all_hooks)

    def test_contacts_plugin_deregisters_on_deactivate(self):
        """ContactsPlugin.on_deactivate removes restore config and history hooks."""
        from app.plugins.builtins.contacts.plugin import ContactsPlugin
        from unittest.mock import AsyncMock, MagicMock

        plugin = ContactsPlugin()
        db = AsyncMock()
        container = MagicMock()
        event_bus = MagicMock()
        event_bus.subscribe = MagicMock()
        event_bus.unsubscribe = MagicMock()

        import asyncio
        loop = asyncio.get_event_loop()

        # Activate first
        loop.run_until_complete(plugin.on_activate(db, container, event_bus))
        assert get_restore_registry().is_registered("contact")

        # Deactivate
        loop.run_until_complete(plugin.on_deactivate(db, container, event_bus))

        # Verify restore config removed
        assert not get_restore_registry().is_registered("contact")

        # Verify history hooks removed (hook registry should have no contact hooks)
        hook_reg = get_hook_registry()
        all_hooks = hook_reg._actions if hasattr(hook_reg, '_actions') else {}
        assert not any("contact.after_create" in k for k in all_hooks)

    def test_contacts_permissions_from_manifest_not_core(self):
        """contacts:* permissions come from plugin manifest, not CORE_PERMISSIONS."""
        from app.core.permission_registry import CORE_PERMISSIONS
        from app.plugins.builtins.contacts.plugin import ContactsPlugin

        # contacts:* should NOT be in CORE_PERMISSIONS
        core_keys = {p["key"] for p in CORE_PERMISSIONS}
        assert "contacts:read" not in core_keys
        assert "contacts:write" not in core_keys
        assert "contacts:delete" not in core_keys

        # contacts:* should be in plugin manifest permissions
        plugin = ContactsPlugin()
        assert "contacts:read" in plugin.manifest.permissions
        assert "contacts:write" in plugin.manifest.permissions
        assert "contacts:delete" in plugin.manifest.permissions

    def test_contacts_entity_models_from_plugin(self):
        """Contact entity models come from plugin get_entity_models(), not hardcoded."""
        from app.plugins.builtins.contacts.plugin import ContactsPlugin

        plugin = ContactsPlugin()
        models = plugin.get_entity_models()

        assert "contact" in models
        assert "contacts" in models
        assert "company" in models
        # All should be the same Contact model
        from app.models.contact import Contact
        assert models["contact"] is Contact
        assert models["contacts"] is Contact
        assert models["company"] is Contact

    def test_app_still_starts_without_contacts_special_case(self):
        """App creates successfully with Contacts as a plugin, not a Core special case.

        Audit P2 (false-green / stale assertion): the old ``> 100 routes``
        assertion reflected the PRE-plugin architecture where business
        routes were hardcoded in main.py. Since the plugin refactor,
        create_app() mounts only CORE routes (~85); plugin routes are
        mounted by the registry lifecycle. The real "no special case"
        proof is that no contacts route is statically included.
        """
        from app.main import create_app
        app = create_app()
        assert app is not None
        # Core routes must exist
        assert len(app.routes) > 50
        # Contacts is a plugin: its routes must NOT be hardcoded in the
        # core app (they are mounted via registry.activate at startup).
        static_paths = {getattr(r, "path", "") for r in app.routes}
        assert not any(p.startswith("/api/v1/contacts") for p in static_paths), (
            "contacts routes must not be statically mounted — Contacts is a plugin"
        )

    def test_hook_isolation_deactivate_one_plugin_keeps_other(self):
        """Two plugins register on same event; deactivating one keeps the other's handler."""
        from app.core.hooks import get_hook_registry, HookRegistry
        from app.core.history_hooks import register_history_hooks
        from unittest.mock import AsyncMock, MagicMock

        reg = get_hook_registry()
        reg._reset_for_testing()

        # Plugin A (contacts) registers history hooks for contact.after_update
        register_history_hooks(
            reg, "contact",
            "contact.after_create", "contact.after_update", "contact.after_delete",
            owner_tag="contacts",
        )

        # Plugin B (tasks) also registers a handler on contact.after_update
        async def _other_plugin_handler(**kwargs):
            pass
        reg.register_action("contact.after_update", _other_plugin_handler, priority=50, owner_tag="tasks")

        # Verify both handlers exist
        actions = reg._actions.get("contact.after_update", [])
        assert len(actions) == 2, f"Expected 2 handlers, got {len(actions)}"

        # Deactivate Plugin A (contacts) — should only remove contacts' handler
        reg.unregister_actions_by_owner("contact.after_update", "contacts")
        reg.unregister_actions_by_owner("contact.after_create", "contacts")
        reg.unregister_actions_by_owner("contact.after_delete", "contacts")

        # Plugin B's handler should still be registered
        remaining = reg._actions.get("contact.after_update", [])
        assert len(remaining) == 1, f"Expected 1 remaining handler, got {len(remaining)}"
        assert remaining[0][1] is _other_plugin_handler, "Remaining handler should be from tasks plugin"

        # Cleanup
        reg._reset_for_testing()

    def test_full_lifecycle_activate_deactivate_simulated(self):
        """Full lifecycle: simulate the service activation sequence → verify
        registered → simulate deactivation → verify deregistered.

        Audit P2 (false-green): renamed — this test drives the plugin hooks
        and registry calls MANUALLY (mirroring what PluginService does),
        it does NOT go through the real PluginService. The true E2E test
        through PluginService lives in test_plugin_lifecycle_service.py.
        """
        from app.services.plugin_service import PluginService
        from app.core.permission_registry import get_permission_registry, init_permission_registry
        from app.core.restore_registry import get_restore_registry
        from app.core.hooks import get_hook_registry
        from app.services.entity_permission_service import ENTITY_MODELS
        from unittest.mock import AsyncMock, MagicMock
        import asyncio

        # Reset all registries
        reset_restore_registry_for_testing()
        init_permission_registry(set())
        get_hook_registry()._reset_for_testing()

        plugin_name = "contacts"
        from app.plugins.builtins.contacts.plugin import ContactsPlugin
        plugin = ContactsPlugin()

        # Simulate activation (what registry.activate + plugin_service would do)
        db = AsyncMock()
        container = MagicMock()
        event_bus = MagicMock()
        event_bus.subscribe = MagicMock()
        event_bus.unsubscribe = MagicMock()

        loop = asyncio.get_event_loop()

        # Activate
        loop.run_until_complete(plugin.on_activate(db, container, event_bus))

        # Register permissions (what plugin_service.activate_plugin does)
        perm_reg = get_permission_registry()
        if plugin.manifest.permissions:
            from app.core.permission_registry import register_plugin_permissions
            register_plugin_permissions(plugin_name, plugin.manifest.permissions)
        perm_reg._active_plugins.add(plugin_name)

        # Register entity models (what plugin_service does)
        from app.services.entity_permission_service import register_entity_model
        for entity_type, model_class in plugin.get_entity_models().items():
            register_entity_model(entity_type, model_class)

        # Verify everything is registered
        assert perm_reg.is_plugin_active(plugin_name), "Plugin should be active"
        assert get_restore_registry().is_registered("contact"), "Restore config should be registered"
        assert "contact" in ENTITY_MODELS, "Entity model should be registered"
        hook_reg = get_hook_registry()
        all_hooks = hook_reg._actions if hasattr(hook_reg, '_actions') else {}
        assert any("contact.after_create" in k for k in all_hooks), "History hooks should be registered"

        # Deactivate
        loop.run_until_complete(plugin.on_deactivate(db, container, event_bus))

        # Unregister permissions (what plugin_service.deactivate_plugin does)
        from app.core.permission_registry import unregister_plugin_permissions
        unregister_plugin_permissions(plugin_name)
        perm_reg._active_plugins.discard(plugin_name)

        # Unregister entity models
        from app.services.entity_permission_service import unregister_entity_model
        for entity_type in plugin.get_entity_models():
            unregister_entity_model(entity_type)

        # Verify everything is deregistered
        assert not perm_reg.is_plugin_active(plugin_name), "Plugin should be inactive"
        assert not get_restore_registry().is_registered("contact"), "Restore config should be removed"
        # Audit P2 (false-green): the old assertion
        # ``"contact" not in ENTITY_MODELS or "contact" in {...}`` was
        # always true. After unregister_entity_model() the type must be
        # GONE from the registry (contacts is plugin-owned, not core).
        assert "contact" not in ENTITY_MODELS, "contact must be deregistered after plugin deactivation"
        all_hooks = hook_reg._actions if hasattr(hook_reg, '_actions') else {}
        assert not any("contact.after_create" in k for k in all_hooks), "History hooks should be removed"

        # Cleanup
        reset_restore_registry_for_testing()
        init_permission_registry(set())
        get_hook_registry()._reset_for_testing()