<?php

namespace App\Http\Controllers\Gallery;

use App\Facade\Theme;
use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;

class StatisticsController extends Controller
{
    public function camerasChart(Request $request)
    {
        $stats = DB::table('photos')
            ->where([
                ['camera_make', '!=', ''],
                ['camera_model', '!=', '']
            ])
            ->groupBy('camera_make', 'camera_model')
            ->select('camera_make', 'camera_model', DB::raw('count(*) as photo_count'))
            ->orderBy('photo_count', 'desc')
            ->get();

        $labels = [];
        $data = [];

        foreach ($stats as $stat)
        {
            // Remove the model from the make if it starts with it
            // E.g. CANON - CANON EOS 1200D becomes just CANON EOS 1200D
            if (substr($stat->camera_model, 0, strlen($stat->camera_make)) == $stat->camera_make)
            {
                $stat->camera_make = substr($stat->camera_make, strlen($stat->camera_make));
            }

            $labels[] = sprintf('%s %s', $stat->camera_make, $stat->camera_model);
            $data[] = $stat->photo_count;
        }

        return response()->json([
            'labels' => $labels,
            'backgrounds' => $this->rotateColoursForData($data),
            'data' => $data
        ]);
    }

    public function index(Request $request)
    {
        return Theme::render('gallery.statistics');
    }

    private function rotateColoursForData(array $data = [])
    {
        $colours = ['#0F2240', '#174E79', '#287598', '#46BBB5', '#35DCAD'];
        $result = [];
        $lastIndex = 0;

        for ($i = 0; $i < count($data); $i++)
        {
            $result[] = $colours[$lastIndex];
            $lastIndex++;
            if ($lastIndex >= count($colours))
            {
                $lastIndex = 0;
            }
        }

        return $result;
    }
}