<?php

namespace App\Actions\Projects;

use App\Models\Project;
use App\Models\ProjectTemplate;
use Illuminate\Support\Arr;
use Illuminate\Support\Facades\DB;

class CreateProjectTemplate
{
    public function __construct(
        private readonly DuplicateProjectConfiguration $duplicateProjectConfiguration,
        private readonly ProjectConfigurationIdentity $projectConfigurationIdentity,
    ) {}

    /** @param array<string, mixed> $attributes */
    public function empty(array $attributes): ProjectTemplate
    {
        $areas = $this->duplicateProjectConfiguration->normalizeCopyAreas(Arr::get($attributes, 'copy_areas', []));

        return ProjectTemplate::query()->create([
            'name' => Arr::get($attributes, 'name'),
            'slug' => Arr::get($attributes, 'slug'),
            'is_published' => true,
            'copy_areas' => $areas,
            'configuration_snapshot' => collect($this->duplicateProjectConfiguration->normalizeConfiguration(
                Arr::get($attributes, 'configuration_snapshot', $this->projectConfigurationIdentity->defaults()),
            ))->only($areas)->all(),
        ]);
    }

    /**
     * @param  array{name: string, slug: string, copy_areas?: array<int, string>}  $attributes
     */
    public function handle(Project $sourceProject, array $attributes): ProjectTemplate
    {
        return DB::transaction(function () use ($sourceProject, $attributes): ProjectTemplate {
            $sourceProject = Project::query()->whereKey($sourceProject->id)->lockForUpdate()->firstOrFail();
            $copyAreas = $this->duplicateProjectConfiguration->normalizeCopyAreas(Arr::get($attributes, 'copy_areas', []));
            $template = $sourceProject->projectTemplate;
            if ($template === null || $template->is_published || $template->project_id !== $sourceProject->id) {
                $template = new ProjectTemplate;
                $template->slug = Arr::get($attributes, 'slug');
            }
            $template->forceFill([
                'project_id' => null,
                'source_project_id' => $sourceProject->id,
                'name' => Arr::get($attributes, 'name'),
                'is_published' => true,
                'copy_areas' => $copyAreas,
                'configuration_snapshot' => $this->duplicateProjectConfiguration->export($sourceProject, $copyAreas),
            ])->save();
            $sourceProject->forceFill([
                'project_template_id' => $template->id,
                'template_overrides' => array_values(array_diff(DuplicateProjectConfiguration::copyableAreas(), $copyAreas)),
            ])->saveQuietly();
            foreach ($sourceProject->configurationRelations() as $relation) {
                $sourceProject->{$relation}()->update(['project_template_id' => $template->id]);
            }

            return $template;
        }, 3);
    }
}