mint/api-v13/app/Http/Api/PaliTextApi.php

<?php

namespace App\Http\Api;

use App\Models\PaliText;

class PaliTextApi
{
    public static function getChapterStartEnd($book, $para)
    {
        $chapter = PaliText::where('book', $book)
            ->where('paragraph', $para)
            ->first();
        if (! $chapter) {
            return false;
        }
        $start = $para;
        $end = $para + $chapter->chapter_len - 1;

        return [$start, $end];
    }

    public static function getChapterPath($book, $para)
    {
        $path = PaliText::where('book', $book)
            ->where('paragraph', $para)
            ->value('path');

        return $path;
    }
}