<?php

namespace Tests\Feature\Taxonomy;

use App\Models\User;
use App\Modules\Courses\Domain\Course;
use App\Modules\Courses\Domain\CourseModule;
use App\Modules\Courses\Domain\CourseVersion;
use App\Modules\Courses\Domain\Enums\CourseVersionStatus;
use App\Modules\Courses\Domain\Lesson;
use App\Modules\Identity\Domain\Enums\UserRole;
use App\Modules\Taxonomy\Domain\ContentTaxonomyMapping;
use App\Modules\Taxonomy\Domain\Enums\TaxonomyStatus;
use App\Modules\Taxonomy\Domain\TaxonomyNode;
use App\Modules\Taxonomy\Domain\TaxonomyType;
use DomainException;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Laravel\Sanctum\Sanctum;
use Tests\TestCase;

class ContentMappingTest extends TestCase
{
    use RefreshDatabase;

    public function test_designer_can_create_weighted_direct_lesson_mapping(): void
    {
        [$designer, $version, $lesson, $node] = $this->foundation();
        Sanctum::actingAs($designer);

        $this->postJson('/api/v1/content-mappings', [
            'courseVersionId' => $version->getKey(),
            'mappableType' => 'lesson',
            'mappableId' => $lesson->getKey(),
            'taxonomyNodeId' => $node->getKey(),
            'mappingType' => 'develops',
            'masteryLevel' => 'applied',
            'weight' => 0.7,
            'source' => 'manual',
        ])->assertCreated()
            ->assertJsonPath('data.weight', 0.7)
            ->assertJsonPath('data.masteryLevel', 'applied')
            ->assertJsonPath('data.confirmationStatus', 'confirmed')
            ->assertJsonPath('data.direct', true);
    }

    public function test_ai_mapping_stays_draft_until_designer_confirmation(): void
    {
        [$designer, $version, $lesson, $node] = $this->foundation();
        Sanctum::actingAs($designer);

        $this->postJson('/api/v1/content-mappings', [
            'courseVersionId' => $version->getKey(),
            'mappableType' => 'lesson',
            'mappableId' => $lesson->getKey(),
            'taxonomyNodeId' => $node->getKey(),
            'mappingType' => 'related',
            'weight' => 0.5,
            'source' => 'ai_suggested',
            'confidence' => 0.82,
        ])->assertCreated()
            ->assertJsonPath('data.confirmationStatus', 'draft')
            ->assertJsonPath('data.confidence', 0.82);
    }

    public function test_designer_can_remove_draft_mapping_but_not_published_mapping(): void
    {
        [$designer, $version, $lesson, $node] = $this->foundation();
        Sanctum::actingAs($designer);
        $payload = ['courseVersionId' => $version->getKey(), 'mappableType' => 'lesson', 'mappableId' => $lesson->getKey(), 'taxonomyNodeId' => $node->getKey(), 'mappingType' => 'develops', 'weight' => 1, 'source' => 'manual'];
        $mapping = $this->postJson('/api/v1/content-mappings', $payload)->assertCreated()->json('data.id');
        $this->deleteJson("/api/v1/content-mappings/{$mapping}")->assertNoContent();

        $mapping = $this->postJson('/api/v1/content-mappings', $payload)->assertCreated()->json('data.id');
        $version->update(['status' => CourseVersionStatus::Published, 'published_at' => now()]);
        $this->deleteJson("/api/v1/content-mappings/{$mapping}")->assertUnprocessable()->assertJsonValidationErrors('courseVersionId');
    }

    public function test_mapping_target_must_belong_to_selected_course_version(): void
    {
        [$designer, $version, , $node] = $this->foundation();
        [, , $otherLesson] = $this->courseStructure($designer, 2);
        Sanctum::actingAs($designer);

        $this->postJson('/api/v1/content-mappings', [
            'courseVersionId' => $version->getKey(),
            'mappableType' => 'lesson',
            'mappableId' => $otherLesson->getKey(),
            'taxonomyNodeId' => $node->getKey(),
            'mappingType' => 'develops',
            'weight' => 1,
            'source' => 'manual',
        ])->assertUnprocessable()->assertJsonValidationErrors('mappableId');
    }

    public function test_published_version_and_its_existing_mappings_are_immutable(): void
    {
        [$designer, $version, $lesson, $node] = $this->foundation();
        Sanctum::actingAs($designer);
        $mappingId = $this->postJson('/api/v1/content-mappings', [
            'courseVersionId' => $version->getKey(),
            'mappableType' => 'lesson',
            'mappableId' => $lesson->getKey(),
            'taxonomyNodeId' => $node->getKey(),
            'mappingType' => 'develops',
            'weight' => 1,
            'source' => 'manual',
        ])->assertCreated()->json('data.id');

        $version->update(['status' => CourseVersionStatus::Published, 'published_at' => now()]);

        $this->postJson('/api/v1/content-mappings', [
            'courseVersionId' => $version->getKey(),
            'mappableType' => 'lesson',
            'mappableId' => $lesson->getKey(),
            'taxonomyNodeId' => $node->getKey(),
            'mappingType' => 'practices',
            'weight' => 1,
            'source' => 'manual',
        ])->assertUnprocessable()->assertJsonValidationErrors('courseVersionId');

        $this->expectException(DomainException::class);
        ContentTaxonomyMapping::query()->findOrFail($mappingId)->update(['weight' => 0.5]);
    }

    private function foundation(): array
    {
        $designer = User::factory()->create(['role' => UserRole::CourseDesigner]);
        [$course, $version, $lesson] = $this->courseStructure($designer, 1);
        $type = TaxonomyType::query()->create([
            'organization_id' => $designer->organization_id,
            'key' => 'skill',
            'name' => 'Skill',
            'status' => TaxonomyStatus::Active,
        ]);
        $node = TaxonomyNode::query()->create([
            'organization_id' => $designer->organization_id,
            'taxonomy_type_id' => $type->getKey(),
            'name' => 'Giving feedback',
            'status' => TaxonomyStatus::Active,
        ]);

        return [$designer, $version, $lesson, $node, $course];
    }

    private function courseStructure(User $designer, int $versionNumber): array
    {
        $course = Course::query()->create([
            'organization_id' => $designer->organization_id,
            'title' => 'Leadership',
            'slug' => 'leadership-'.$versionNumber,
            'created_by' => $designer->getKey(),
        ]);
        $version = CourseVersion::query()->create([
            'organization_id' => $designer->organization_id,
            'course_id' => $course->getKey(),
            'version_number' => $versionNumber,
            'status' => CourseVersionStatus::Draft,
            'title' => 'Leadership',
        ]);
        $module = CourseModule::query()->create([
            'organization_id' => $designer->organization_id,
            'course_version_id' => $version->getKey(),
            'title' => 'Communication',
            'position' => 1,
        ]);
        $lesson = Lesson::query()->create([
            'organization_id' => $designer->organization_id,
            'course_version_id' => $version->getKey(),
            'course_module_id' => $module->getKey(),
            'title' => 'Feedback',
            'position' => 1,
        ]);

        return [$course, $version, $lesson];
    }
}