<?php

declare(strict_types=1);

namespace App\Http\Controllers\Api\V1;

use App\Http\Controllers\Controller;
use App\Http\Requests\Api\V1\ProjectRequest;
use App\Http\Resources\ProjectResource;
use App\Models\Project;
use App\Support\TranslatablePayload;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Http\Resources\Json\AnonymousResourceCollection;
use Illuminate\Support\Facades\DB;

/**
 * Projects, as the panel edits them — so the MCP server can load the
 * collective's work without anyone copying it into a form by hand.
 */
class ProjectController extends Controller
{
    /** Relations every answer carries, so a client can PATCH back what it read. */
    protected const WITH = ['coverMedia', 'technologies', 'services', 'members'];

    /**
     * Filters: status, search (title in the active language), trashed.
     */
    public function index(Request $request): AnonymousResourceCollection
    {
        $this->authorize('viewAny', Project::class);

        $locale = app()->getLocale();

        $projects = Project::query()
            ->with(self::WITH)
            ->when($request->filled('status'), fn ($q) => $q->where('status', $request->string('status')))
            ->when($request->filled('search'), fn ($q) => $q->where("title->{$locale}", 'like', '%'.$request->string('search').'%'))
            ->when($request->boolean('trashed'), fn ($q) => $q->onlyTrashed())
            ->orderBy('position')
            ->orderByDesc('created_at')
            ->paginate(perPage: min($request->integer('per_page', 25), 100))
            ->withQueryString();

        return ProjectResource::collection($projects);
    }

    public function store(ProjectRequest $request): JsonResponse
    {
        $this->authorize('create', Project::class);

        $project = $this->save(new Project, $request);

        return ProjectResource::make($project)->response()->setStatusCode(201);
    }

    public function show(Project $project): ProjectResource
    {
        $this->authorize('view', $project);

        return ProjectResource::make($project->load(self::WITH));
    }

    public function update(ProjectRequest $request, Project $project): ProjectResource
    {
        $this->authorize('update', $project);

        return ProjectResource::make($this->save($project, $request));
    }

    public function destroy(Project $project): JsonResponse
    {
        $this->authorize('delete', $project);

        $project->delete();

        return response()->json(status: 204);
    }

    public function restore(Project $project): ProjectResource
    {
        $this->authorize('restore', $project);

        $project->restore();

        return ProjectResource::make($project->load(self::WITH));
    }

    /**
     * The record and its relations in one transaction: a project that saved
     * but lost its team halfway would be worse than one that did not save.
     */
    protected function save(Project $project, ProjectRequest $request): Project
    {
        $data = $request->validated();

        DB::transaction(function () use ($project, $data): void {
            $project->fill(TranslatablePayload::merge(
                $project,
                collect($data)->except(['technology_ids', 'service_ids', 'members'])->all(),
                $project->translatable,
            ));
            $project->save();

            if (array_key_exists('technology_ids', $data)) {
                $project->technologies()->sync($data['technology_ids']);
            }

            if (array_key_exists('service_ids', $data)) {
                $project->services()->sync($data['service_ids']);
            }

            if (array_key_exists('members', $data)) {
                $project->members()->sync(collect($data['members'])->mapWithKeys(
                    fn (array $member) => [$member['id'] => ['role' => $member['role'] ?? null]],
                )->all());
            }
        });

        return $project->load(self::WITH);
    }
}