<?php

namespace Tests\Unit;

use App\Services\TerritorialCsvAudit;
use PHPUnit\Framework\TestCase;
use RuntimeException;

class TerritorialCsvAuditTest extends TestCase
{
    private string $path;

    protected function setUp(): void
    {
        $this->path = tempnam(sys_get_temp_dir(), 'geo-csv-');
    }

    protected function tearDown(): void
    {
        unlink($this->path);
    }

    private function inspect(string $rows): array
    {
        file_put_contents($this->path, implode(';', TerritorialCsvAudit::HEADERS)."\n".$rows);

        return (new TerritorialCsvAudit)->inspect($this->path, ['01']);
    }

    public function test_preserves_leading_zero_codes_and_counts_identical_duplicates(): void
    {
        $row = '01;Synthetic;0101;District;010101;Post;01010101;Locality;village;-12.5;35.1';
        $report = $this->inspect($row."\n".$row);
        $this->assertSame('structurally_valid_requires_review', $report['status']);
        $this->assertSame(1, $report['duplicate_records']);
        $this->assertSame(1, $report['candidate_counts_by_province']['01']['locality']);
        $this->assertSame(hash_file('sha256', $this->path), $report['sha256']);
    }

    public function test_conflicting_names_and_coordinates_cancel_whole_dataset(): void
    {
        $report = $this->inspect("01;Synthetic;0101;First;010101;Post;01010101;Locality;village;0;0\n01;Synthetic;0101;Other;010101;Post;01010101;Locality;village;1;0");
        $this->assertSame('rejected', $report['status']);
        $this->assertContains('conflicting_code:district', $report['errors'][0]['issues']);
        $this->assertContains('conflicting_code:locality', $report['errors'][0]['issues']);
    }

    public function test_no_inferred_parent_or_coordinates_and_unknown_province_are_rejected(): void
    {
        $report = $this->inspect('02;Synthetic;0201;District;;;02010101;Locality;village;91;');
        $this->assertSame('rejected', $report['status']);
        foreach (['unknown_province', 'locality_requires_reviewed_parent_exception', 'incomplete_coordinates', 'invalid_coordinate:latitude'] as $issue) {
            $this->assertContains($issue, $report['errors'][0]['issues']);
        }
    }

    public function test_district_only_rows_do_not_create_localities(): void
    {
        $report = $this->inspect('01;Synthetic;0101;District;;;;;;;');
        $this->assertSame('structurally_valid_requires_review', $report['status']);
        $this->assertArrayNotHasKey('locality', $report['candidate_counts_by_province']['01']);
    }

    public function test_empty_csv_is_rejected(): void
    {
        $this->assertSame('rejected', $this->inspect('')['status']);
    }

    public function test_wrong_delimiter_is_not_silently_interpreted(): void
    {
        file_put_contents($this->path, implode(',', TerritorialCsvAudit::HEADERS));
        $this->expectException(RuntimeException::class);
        (new TerritorialCsvAudit)->inspect($this->path, ['01']);
    }
}