<?php

namespace App;

use App\Models\Project;
use Illuminate\Filesystem\Filesystem;
use Illuminate\Http\File;
use Illuminate\Support\Carbon;
use Illuminate\Support\Collection;
use Illuminate\Support\Facades\Storage;
use Maatwebsite\Excel\Concerns\ToCollection;
use Maatwebsite\Excel\Facades\Excel;
use Maatwebsite\Excel\HeadingRowImport;

class PivotNameAnalyser
{
    private string $geoJsonPath;
    private string $excelPath;

    public function __construct(string $geoJsonPath, string $excelPath)
    {
        $this->geoJsonPath = $geoJsonPath;
        $this->excelPath = $excelPath;
    }

    public function getGeoJsonPivotNames():Collection
    {
        $geoJson = json_decode(file_get_contents($this->geoJsonPath), true);
        $pivotNames = collect([]);
        foreach ($geoJson['features'] as $feature) {
            $pivotNames->add( $feature['properties']['field']);
        }
        return $pivotNames->unique();
    }

    public function getHarvestDataPivotNames():Collection
    {
        $excelData = Excel::toCollection(new \App\Imports\ExcelFileImport(), $this->excelPath);
        $sheetOne = $excelData->toArray()[0];
        $fieldNames = collect([]);
        foreach ($sheetOne as $rowIndex => $row) {
            if ($rowIndex === 0) {
                foreach ($row as $columnIndex => $cell) {
                    if (strtolower($cell) === 'field') {
                        $fieldColumnName = $columnIndex;
                    }
                }
                continue;
            }
            $fieldNames->add(trim($row[$fieldColumnName]));
        }
        return $fieldNames->unique();
    }

    public function getCommonPivotNames():Collection
    {
        return $this->getGeoJsonPivotNames()->intersect($this->getHarvestDataPivotNames());
    }

    public function getGeoJsonPivotNamesNotInHarvest():Collection
    {
        return $this->getGeoJsonPivotNames()->diff($this->getHarvestDataPivotNames());
    }

    public function getHarvestPivotNamesNotInGeoJson():Collection
    {
        return $this->getHarvestDataPivotNames()->diff($this->getGeoJsonPivotNames());
    }

    public function hasErrors():bool
    {
        return $this->getGeoJsonPivotNamesNotInHarvest()->isNotEmpty() || $this->getHarvestPivotNamesNotInGeoJson()->isNotEmpty();
    }
}