<?php

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use App\Http\Requests\StoreIdeaRequest;
use App\Http\Requests\UpdateIdeaRequest;
use App\Http\Resources\IdeaResource;
use App\Models\Idea;
use Illuminate\Http\Request;

class IdeaController extends Controller
{
    public function index(Request $request)
    {
        $query = Idea::query();

        if ($request->filled('status')) {
            $query->where('status', $request->string('status'));
        }

        if ($request->filled('category')) {
            $query->where('category', $request->string('category'));
        }

        if ($request->filled('project_id')) {
            $query->where('project_id', $request->integer('project_id'));
        }

        if ($request->filled('search')) {
            $query->search($request->string('search'));
        }

        if ($request->filled('unlinked')) {
            $query->unlinked();
        }

        if ($request->filled('priority')) {
            $query->where('priority', $request->integer('priority'));
        }

        $ideas = $query->orderBy('priority', 'desc')->orderBy('created_at', 'desc')->get();

        // Eager load relationships if requested
        if ($request->boolean('with_project')) {
            $ideas->load(['project']);
        }

        if ($request->boolean('with_user')) {
            $ideas->load(['user']);
        }

        return IdeaResource::collection($ideas);
    }

    public function store(StoreIdeaRequest $request)
    {
        $idea = Idea::create($request->validated());

        return (new IdeaResource($idea))
            ->response()
            ->setStatusCode(201);
    }

    public function show(Request $request, Idea $idea)
    {
        if ($request->boolean('with_project')) {
            $idea->load(['project']);
        }

        if ($request->boolean('with_user')) {
            $idea->load(['user']);
        }

        return new IdeaResource($idea);
    }

    public function update(UpdateIdeaRequest $request, Idea $idea)
    {
        $idea->update($request->validated());

        return new IdeaResource($idea);
    }

    public function destroy(Idea $idea)
    {
        $idea->delete();

        return response()->noContent();
    }

    /**
     * Change idea status.
     */
    public function changeStatus(Request $request, Idea $idea)
    {
        $request->validate([
            'status' => ['required', 'string', 'in:' . implode(',', Idea::STATUSES)],
        ]);

        $idea->update(['status' => $request->string('status')]);

        return new IdeaResource($idea);
    }

    /**
     * Link an idea to a project.
     */
    public function linkToProject(Request $request, Idea $idea)
    {
        $request->validate([
            'project_id' => ['required', 'integer', 'exists:projects,id'],
        ]);

        $idea->update(['project_id' => $request->integer('project_id')]);

        return new IdeaResource($idea->load(['project']));
    }

    /**
     * Unlink an idea from a project.
     */
    public function unlinkFromProject(Idea $idea)
    {
        $idea->update(['project_id' => null]);

        return new IdeaResource($idea);
    }
}