<?php

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use Carbon\Carbon;

use App\Models\WorkHour;

class WorkHourController extends Controller
{
    /**
     * GET /WorkHours
     *
     * Required query params:
     *   - fromDate   : date-time (filters work_date >= fromDate)
     *   - toDate     : date-time (filters work_date <= toDate)
     * Optional query param:
     *   - projectId  : integer   (filters by associated project)
     * 
     * @response \App\Models\WorkHour
     */
    public function index(Request $request) {
        $request->validate([
            'fromDate'  => 'required|date',
            'toDate'    => 'required|date',
            'projectId' => 'nullable|integer',
        ]);

        $from = Carbon::parse($request->query('fromDate'))
            ->startOfDay()
            ->toDateTimeString();   // “2025-05-12 00:00:00”

        $to   = Carbon::parse($request->query('toDate'))
            ->endOfDay()
            ->toDateTimeString();   // “2025-05-12 23:59:59”

        $q = WorkHour::with('project.departments')
            ->whereBetween('work_date', [$from, $to]);

        if ($pid = $request->query('projectId')) {
            // filter directly on the foreign key
            $q->where('project_id', $pid);
        }

        $result = $q->get()->map(function (WorkHour $w) {
            $deptIds = $w->project
                ->departments
                ->pluck('id')
                ->unique()
                ->values()
                ->all();

            return [
                'WorkHourID'           => $w->id,
                'UserID'               => $w->user_id,
                'ProjectID'            => $w->project_id,
                'OrdinaryHours'        => $w->ordinary_hours,
                'Date'                 => $w->work_date->toDateString(),
                'Comment'              => $w->comment,
                'DepartmentIDsProject' => $deptIds,
                'Updated'              => $w->updated_at->toIso8601String() . 'Z',
                'Created'              => $w->created_at->toIso8601String() . 'Z',
            ];
        });

        return response()->json($result);
    }
}