"""
Tests for moderation admin interfaces.

These tests verify the functionality of edit submission, photo submission,
state log, and history event admin classes including query optimization
and custom moderation actions.
"""

import pytest
from django.contrib.admin.sites import AdminSite
from django.contrib.auth import get_user_model
from django.test import RequestFactory, TestCase

from apps.moderation.admin import (
    EditSubmissionAdmin,
    HistoryEventAdmin,
    ModerationAdminSite,
    PhotoSubmissionAdmin,
    StateLogAdmin,
    moderation_site,
)
from apps.moderation.models import EditSubmission, PhotoSubmission

User = get_user_model()


class TestModerationAdminSite(TestCase):
    """Tests for ModerationAdminSite class."""

    def setUp(self):
        self.factory = RequestFactory()

    def test_site_configuration(self):
        """Verify site header and title are set."""
        assert moderation_site.site_header == "ThrillWiki Moderation"
        assert moderation_site.site_title == "ThrillWiki Moderation"
        assert moderation_site.index_title == "Moderation Dashboard"

    def test_permission_check_requires_moderator_role(self):
        """Verify only moderators can access the site."""
        request = self.factory.get("/moderation/")

        # Anonymous user
        request.user = type("obj", (object,), {"is_authenticated": False})()
        assert moderation_site.has_permission(request) is False

        # Regular user
        request.user = type("obj", (object,), {
            "is_authenticated": True,
            "role": "USER"
        })()
        assert moderation_site.has_permission(request) is False

        # Moderator
        request.user = type("obj", (object,), {
            "is_authenticated": True,
            "role": "MODERATOR"
        })()
        assert moderation_site.has_permission(request) is True

        # Admin
        request.user = type("obj", (object,), {
            "is_authenticated": True,
            "role": "ADMIN"
        })()
        assert moderation_site.has_permission(request) is True


class TestEditSubmissionAdmin(TestCase):
    """Tests for EditSubmissionAdmin class."""

    def setUp(self):
        self.factory = RequestFactory()
        self.site = AdminSite()
        self.admin = EditSubmissionAdmin(model=EditSubmission, admin_site=self.site)

    def test_list_display_fields(self):
        """Verify all required fields are in list_display."""
        required_fields = [
            "id",
            "user_link",
            "content_type_display",
            "content_link",
            "status_badge",
            "created_at",
            "handled_by_link",
        ]
        for field in required_fields:
            assert field in self.admin.list_display

    def test_list_select_related(self):
        """Verify select_related is configured."""
        assert "user" in self.admin.list_select_related
        assert "content_type" in self.admin.list_select_related
        assert "handled_by" in self.admin.list_select_related

    def test_readonly_fields(self):
        """Verify submission fields are readonly."""
        assert "user" in self.admin.readonly_fields
        assert "content_type" in self.admin.readonly_fields
        assert "changes" in self.admin.readonly_fields
        assert "created_at" in self.admin.readonly_fields

    def test_moderation_actions_registered(self):
        """Verify moderation actions are registered."""
        request = self.factory.get("/admin/")
        request.user = User(is_superuser=True)

        actions = self.admin.get_actions(request)
        assert "bulk_approve" in actions
        assert "bulk_reject" in actions
        assert "bulk_escalate" in actions


class TestPhotoSubmissionAdmin(TestCase):
    """Tests for PhotoSubmissionAdmin class."""

    def setUp(self):
        self.factory = RequestFactory()
        self.site = AdminSite()
        self.admin = PhotoSubmissionAdmin(model=PhotoSubmission, admin_site=self.site)

    def test_list_display_includes_preview(self):
        """Verify photo preview is in list_display."""
        assert "photo_preview" in self.admin.list_display

    def test_list_select_related(self):
        """Verify select_related is configured."""
        assert "user" in self.admin.list_select_related
        assert "content_type" in self.admin.list_select_related
        assert "handled_by" in self.admin.list_select_related

    def test_moderation_actions_registered(self):
        """Verify moderation actions are registered."""
        request = self.factory.get("/admin/")
        request.user = User(is_superuser=True)

        actions = self.admin.get_actions(request)
        assert "bulk_approve" in actions
        assert "bulk_reject" in actions


class TestStateLogAdmin(TestCase):
    """Tests for StateLogAdmin class."""

    def setUp(self):
        self.factory = RequestFactory()
        self.site = AdminSite()
        # Note: StateLog is from django_fsm_log
        from django_fsm_log.models import StateLog
        self.admin = StateLogAdmin(model=StateLog, admin_site=self.site)

    def test_readonly_permissions(self):
        """Verify read-only permissions are set."""
        request = self.factory.get("/admin/")
        request.user = User(is_superuser=False)

        assert self.admin.has_add_permission(request) is False
        assert self.admin.has_change_permission(request) is False

    def test_delete_permission_superuser_only(self):
        """Verify delete permission is superuser only."""
        request = self.factory.get("/admin/")

        request.user = User(is_superuser=False)
        assert self.admin.has_delete_permission(request) is False

        request.user = User(is_superuser=True)
        assert self.admin.has_delete_permission(request) is True

    def test_list_select_related(self):
        """Verify select_related is configured."""
        assert "content_type" in self.admin.list_select_related
        assert "by" in self.admin.list_select_related

    def test_export_action_registered(self):
        """Verify export audit trail action is registered."""
        request = self.factory.get("/admin/")
        request.user = User(is_superuser=True)

        actions = self.admin.get_actions(request)
        assert "export_audit_trail" in actions


class TestHistoryEventAdmin(TestCase):
    """Tests for HistoryEventAdmin class."""

    def setUp(self):
        self.factory = RequestFactory()
        self.site = AdminSite()
        # Note: HistoryEventAdmin is designed for pghistory event models
        # We test it with a mock model

    def test_readonly_permissions(self):
        """Verify read-only permissions are configured in the class."""
        # Test the methods exist and return correct values
        admin = HistoryEventAdmin

        # Check that has_add_permission returns False
        assert hasattr(admin, "has_add_permission")

        # Check that has_change_permission returns False
        assert hasattr(admin, "has_change_permission")


class TestRegisteredModels(TestCase):
    """Tests for models registered with moderation site."""

    def test_edit_submission_registered(self):
        """Verify EditSubmission is registered with moderation site."""
        assert EditSubmission in moderation_site._registry

    def test_photo_submission_registered(self):
        """Verify PhotoSubmission is registered with moderation site."""
        assert PhotoSubmission in moderation_site._registry

    def test_state_log_registered(self):
        """Verify StateLog is registered with moderation site."""
        from django_fsm_log.models import StateLog
        assert StateLog in moderation_site._registry