<?php

namespace Tests\Feature;

use App\Models\Group;
use App\Models\Investigation;
use App\Models\User;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Tests\TestCase;

class InvestigationAccessTest extends TestCase
{
    use RefreshDatabase;

    public function test_owner_has_full_access(): void
    {
        $owner = User::factory()->create();
        $investigation = Investigation::factory()->for($owner, 'owner')->create();

        $this->assertTrue($investigation->isAccessibleBy($owner));
        $this->assertTrue($investigation->isEditableBy($owner));
        $this->assertTrue($owner->can('manageAccess', $investigation));
    }

    public function test_unrelated_user_has_no_access(): void
    {
        $owner = User::factory()->create();
        $stranger = User::factory()->create();
        $investigation = Investigation::factory()->for($owner, 'owner')->create();

        $this->assertFalse($investigation->isAccessibleBy($stranger));
        $this->assertFalse($stranger->can('view', $investigation));
    }

    public function test_owner_can_grant_direct_viewer_access(): void
    {
        $owner = User::factory()->create();
        $viewer = User::factory()->create();
        $investigation = Investigation::factory()->for($owner, 'owner')->create();

        $investigation->users()->attach($viewer, ['role' => 'viewer']);

        $this->assertTrue($investigation->isAccessibleBy($viewer));
        $this->assertFalse($investigation->isEditableBy($viewer));
        $this->assertFalse($viewer->can('manageAccess', $investigation));
    }

    public function test_owner_can_grant_direct_editor_access(): void
    {
        $owner = User::factory()->create();
        $editor = User::factory()->create();
        $investigation = Investigation::factory()->for($owner, 'owner')->create();

        $investigation->users()->attach($editor, ['role' => 'editor']);

        $this->assertTrue($investigation->isAccessibleBy($editor));
        $this->assertTrue($investigation->isEditableBy($editor));
        $this->assertTrue($editor->can('update', $investigation));
    }

    public function test_group_grant_gives_access_to_all_members(): void
    {
        $owner = User::factory()->create();
        $groupOwner = User::factory()->create();
        $memberOne = User::factory()->create();
        $memberTwo = User::factory()->create();

        $group = Group::factory()->for($groupOwner, 'owner')->create();
        $group->members()->attach([$memberOne->id, $memberTwo->id]);

        $investigation = Investigation::factory()->for($owner, 'owner')->create();
        $investigation->groups()->attach($group, ['role' => 'viewer']);

        $this->assertTrue($investigation->isAccessibleBy($memberOne));
        $this->assertTrue($investigation->isAccessibleBy($memberTwo));
        $this->assertFalse($investigation->isEditableBy($memberOne));
    }

    public function test_direct_grant_wins_over_conflicting_group_grant(): void
    {
        $owner = User::factory()->create();
        $groupOwner = User::factory()->create();
        $user = User::factory()->create();

        $group = Group::factory()->for($groupOwner, 'owner')->create();
        $group->members()->attach($user->id);

        $investigation = Investigation::factory()->for($owner, 'owner')->create();
        $investigation->groups()->attach($group, ['role' => 'editor']);
        $investigation->users()->attach($user, ['role' => 'viewer']);

        $this->assertSame('viewer', $investigation->roleFor($user));
        $this->assertFalse($investigation->isEditableBy($user));
    }

    public function test_editor_role_wins_when_user_belongs_to_multiple_groups(): void
    {
        $owner = User::factory()->create();
        $user = User::factory()->create();

        $viewerGroup = Group::factory()->create();
        $editorGroup = Group::factory()->create();
        $viewerGroup->members()->attach($user->id);
        $editorGroup->members()->attach($user->id);

        $investigation = Investigation::factory()->for($owner, 'owner')->create();
        $investigation->groups()->attach($viewerGroup, ['role' => 'viewer']);
        $investigation->groups()->attach($editorGroup, ['role' => 'editor']);

        $this->assertSame('editor', $investigation->roleFor($user));
    }

    public function test_only_owner_can_delete_investigation(): void
    {
        $owner = User::factory()->create();
        $editor = User::factory()->create();
        $investigation = Investigation::factory()->for($owner, 'owner')->create();
        $investigation->users()->attach($editor, ['role' => 'editor']);

        $this->assertTrue($owner->can('delete', $investigation));
        $this->assertFalse($editor->can('delete', $investigation));
    }
}