import { argv } from 'node:process';
import { env } from 'node:process';

const DEBUG =  Boolean(env.DEBUG);

const grades = [
	{
		grade: 'A1', min: 91, max: 100
	},
	{
		grade: 'A2', min: 81, max: 90
	},
	{
		grade: 'B1', min: 71, max: 80
	},
	{
		grade: 'B2', min: 61, max: 70
	},
	{
		grade: 'C1', min: 51, max: 60
	},
	{
		grade: 'C2', min: 41, max: 50
	},
	{
		grade: 'D', min: 33, max: 40
	},
	{
		grade: 'E', min: 0, max: 32
	}
]

/**
 * Returns the grade corresponding to mark.
 *
 * @param {number} input The marks out of 100.
 * @return The corresponding grade of the marks.
 * @customfunction
 */

function getGrade(mark){

	if (isNaN(Number(mark))) return 'Ab'

	for (let i=0;i<=grades.length-1;i++){
		const {max} = grades[i]
		printdebug({i,max})

		if (max > mark) continue

		for (let j=i;j>0;j--) {
			const {min,grade} = grades[j]
		printdebug({j,min})
			if (mark < min) continue
			return grade
		}
	}
	return 'Ab'
	//const [{grade}] = grades.filter(({max,min}) => mark <= max && mark >= min)
	//return grade
}


const grade = getGrade(argv[2])
console.log(grade)

function printdebug(text){ if (DEBUG)console.error('DEBUG:',text) }