import type { Stage } from '../types'

const sums = Array.from({ length: 15 }, (_, i) => {
  const a = Math.floor(i / 3) + 1
  const b = (i % 3) + 1
  const res = a + b
  return { a, b, res }
})

const exercises: any[] = []

for (const s of sums) {
  const prereqs: string[] = []
  if (s.a > 1 || s.b > 1) {
    if (s.b === 1) {
      prereqs.push(`fra1-suma-${s.a - 1}-1`)
    } else {
      prereqs.push(`fra1-suma-1-${s.b - 1}`)
    }
  }

  exercises.push({
    id: `fra1-suma-${s.a}-${s.b}`,
    stage: 1,
    skillCode: `suma-${s.a + s.b}`,
    type: 'sensibilizacion',
    prerequisites: prereqs,
    content: {
      instruction: `Sumá: ${s.a} + ${s.b}`,
      audioText: `${s.a} más ${s.b} es ${s.res}`,
      emoji: '🧮',
      color: '#8CB8A0',
      options: [
        { label: String(s.res), correct: true, id: String(s.res) },
        { label: String(s.res - 1), correct: false, id: String(s.res - 1) },
        { label: String(s.res + 1), correct: false, id: String(s.res + 1) },
      ].sort(() => Math.random() - 0.5),
    },
    functionalContext: `Sumar ${s.a} + ${s.b} con método Montessori.`,
    errorType: 'discriminacion-auditiva',
  })
}

const stage: Stage = {
  id: 1,
  name: 'Sumas de 1 dígito',
  description: 'Aprender sumas básicas del 1 al 9 con material concreto Montessori.',
  exercises,
}

export default stage