import { ChallengeAlgorithm } from '@impost/lib';
import { defineEventHandler } from 'h3'

export default defineEventHandler((event) => {
    let difficulty: number;

    switch (config.algorithm) {
        case ChallengeAlgorithm.SHA256:
        case ChallengeAlgorithm.Argon2:
            switch (config.strategy) {
                case 'leading_zeroes':
                    difficulty = config.leading_zeroes.difficulty!;
                    break;
                case 'target_number':
                    difficulty = config.target_number.max_number!;
                    break;
            }
            break;
        case ChallengeAlgorithm.kCTF:
            difficulty = config.kctf.difficulty!;
            break;
        default:
            throw createError({
                statusCode: 500,
                statusMessage: 'Unknown algorithm',
            })
            break;
    }

    return {
        difficulty,
        algorithm: config.algorithm,
        strategy: config.strategy || undefined,
    }
})