<?php

use App\Models\Policy;
use App\Models\Tenant;
use App\Services\Graph\AssignmentFetcher;
use App\Services\Graph\GroupResolver;
use App\Services\Intune\PolicySnapshotService;
use App\Services\Intune\VersionService;

beforeEach(function () {
    $this->tenant = Tenant::factory()->create();
    $this->policy = Policy::factory()->create([
        'tenant_id' => $this->tenant->id,
        'external_id' => 'test-policy-id',
    ]);
});

it('captures policy version with assignments from graph', function () {
    // Mock dependencies
    $this->mock(PolicySnapshotService::class, function ($mock) {
        $mock->shouldReceive('fetch')
            ->once()
            ->andReturn([
                'payload' => [
                    'id' => 'test-policy-id',
                    'name' => 'Test Policy',
                    'settings' => [],
                ],
            ]);
    });

    $this->mock(AssignmentFetcher::class, function ($mock) {
        $mock->shouldReceive('fetch')
            ->once()
            ->andReturn([
                [
                    'id' => 'assignment-1',
                    'intent' => 'apply',
                    'target' => [
                        '@odata.type' => '#microsoft.graph.groupAssignmentTarget',
                        'groupId' => 'group-123',
                    ],
                ],
            ]);
    });

    $this->mock(GroupResolver::class, function ($mock) {
        $mock->shouldReceive('resolve')
            ->once()
            ->andReturn([
                'resolved' => [
                    'group-123' => ['id' => 'group-123', 'displayName' => 'Test Group'],
                ],
                'orphaned' => [],
            ]);
    });

    $versionService = app(VersionService::class);
    $version = $versionService->captureFromGraph(
        $this->tenant,
        $this->policy,
        'test@example.com'
    );

    expect($version)->not->toBeNull()
        ->and($version->assignments)->not->toBeNull()
        ->and($version->assignments)->toHaveCount(1)
        ->and($version->assignments[0]['target']['groupId'])->toBe('group-123')
        ->and($version->assignments_hash)->not->toBeNull()
        ->and($version->metadata['assignments_count'])->toBe(1)
        ->and($version->metadata['has_orphaned_assignments'])->toBeFalse();
});

it('captures policy version without assignments when none exist', function () {
    // Mock dependencies
    $this->mock(PolicySnapshotService::class, function ($mock) {
        $mock->shouldReceive('fetch')
            ->once()
            ->andReturn([
                'payload' => [
                    'id' => 'test-policy-id',
                    'name' => 'Test Policy',
                    'settings' => [],
                ],
            ]);
    });

    $this->mock(AssignmentFetcher::class, function ($mock) {
        $mock->shouldReceive('fetch')
            ->once()
            ->andReturn([]);
    });

    $versionService = app(VersionService::class);
    $version = $versionService->captureFromGraph(
        $this->tenant,
        $this->policy,
        'test@example.com'
    );

    expect($version)->not->toBeNull()
        ->and($version->assignments)->toBeNull()
        ->and($version->assignments_hash)->toBeNull();
});

it('handles assignment fetch failure gracefully', function () {
    // Mock dependencies
    $this->mock(PolicySnapshotService::class, function ($mock) {
        $mock->shouldReceive('fetch')
            ->once()
            ->andReturn([
                'payload' => [
                    'id' => 'test-policy-id',
                    'name' => 'Test Policy',
                    'settings' => [],
                ],
            ]);
    });

    $this->mock(AssignmentFetcher::class, function ($mock) {
        $mock->shouldReceive('fetch')
            ->once()
            ->andThrow(new \Exception('Graph API error'));
    });

    $versionService = app(VersionService::class);
    $version = $versionService->captureFromGraph(
        $this->tenant,
        $this->policy,
        'test@example.com'
    );

    expect($version)->not->toBeNull()
        ->and($version->assignments)->toBeNull()
        ->and($version->metadata['assignments_fetch_failed'])->toBeTrue()
        ->and($version->metadata['assignments_fetch_error'])->toBe('Graph API error');
});

it('calculates correct hash for assignments', function () {
    $assignments = [
        ['id' => '1', 'target' => ['groupId' => 'group-1']],
        ['id' => '2', 'target' => ['groupId' => 'group-2']],
    ];

    $version = $this->policy->versions()->create([
        'tenant_id' => $this->tenant->id,
        'policy_id' => $this->policy->id,
        'version_number' => 1,
        'policy_type' => 'deviceManagementConfigurationPolicy',
        'snapshot' => ['test' => 'data'],
        'assignments' => $assignments,
        'assignments_hash' => hash('sha256', json_encode($assignments)),
        'captured_at' => now(),
    ]);

    $expectedHash = hash('sha256', json_encode($assignments));

    expect($version->assignments_hash)->toBe($expectedHash);

    // Verify same assignments produce same hash
    $version2 = $this->policy->versions()->create([
        'tenant_id' => $this->tenant->id,
        'policy_id' => $this->policy->id,
        'version_number' => 2,
        'policy_type' => 'deviceManagementConfigurationPolicy',
        'snapshot' => ['test' => 'data'],
        'assignments' => $assignments,
        'assignments_hash' => hash('sha256', json_encode($assignments)),
        'captured_at' => now(),
    ]);

    expect($version2->assignments_hash)->toBe($version->assignments_hash);
});