import { describe, expect, it } from 'vitest'
import { monogramFor, monogramInk, monogramMap, speciesName } from './monogram'

describe('speciesName', () => {
  it('drops a variety suffix and a parenthetical', () => {
    expect(speciesName('Tomato — Cherokee Purple')).toBe('Tomato')
    expect(speciesName('Melon - Hale’s Best')).toBe('Melon')
    expect(speciesName('Garlic (Music)')).toBe('Garlic')
    expect(speciesName('Kale')).toBe('Kale')
  })
})

describe('monogramMap', () => {
  it('gives a bare initial where it is unique', () => {
    const m = monogramMap([
      { id: 1, name: 'Garlic' },
      { id: 2, name: 'Tomato' },
    ])
    expect(m.get(1)).toBe('G')
    expect(m.get(2)).toBe('T')
  })

  it('resolves a shared initial by catalog order, second letter lowercase', () => {
    const m = monogramMap([
      { id: 6, name: 'Tomato' },
      { id: 26, name: 'Thyme' },
      { id: 32, name: 'Marigold' },
      { id: 29, name: 'Mint' },
    ])
    expect(m.get(6)).toBe('T') // first into the catalog keeps the initial
    expect(m.get(26)).toBe('Th')
    expect(m.get(29)).toBe('M')
    expect(m.get(32)).toBe('Ma')
  })

  it('takes the next free second letter, never repeating the initial', () => {
    const m = monogramMap([
      { id: 5, name: 'Pea' },
      { id: 7, name: 'Pepper' },
      { id: 24, name: 'Parsley' },
    ])
    expect(m.get(5)).toBe('P')
    expect(m.get(7)).toBe('Pe')
    expect(m.get(24)).toBe('Pa')
    const n = monogramMap([
      { id: 1, name: 'Pea' },
      { id: 2, name: 'Peach' },
      { id: 3, name: 'Pepper' },
    ])
    expect(n.get(2)).toBe('Pe')
    expect(n.get(3)).toBe('Pr') // "Pp" would repeat the initial
  })

  it('uses the species for varieties and keeps the plain one first', () => {
    const m = monogramMap([
      { id: 6, name: 'Tomato' },
      { id: 40, name: 'Tomato — Cherokee Purple' },
    ])
    expect(m.get(6)).toBe('T')
    expect(m.get(40)).toBe('To')
  })

  it('marks an unletterable name with a placeholder', () => {
    expect(monogramMap([{ id: 1, name: '123' }]).get(1)).toBe('?')
    expect(monogramFor('🌱')).toBe('?')
  })
})

describe('monogramInk', () => {
  it('keeps paper lettering on colors dark enough to carry it', () => {
    expect(monogramInk('#c8553d')).toBe('var(--color-paper)') // tomato
    expect(monogramInk('#7a8a5e')).toBe('var(--color-paper)') // sage
    expect(monogramInk('#5f8f45')).toBe('var(--color-paper)')
  })

  it('switches to the dark marker ink on pale colors', () => {
    expect(monogramInk('#d9d2c5')).toBe('var(--color-marker-ink)') // garlic
    expect(monogramInk('#8bc98b')).toBe('var(--color-marker-ink)') // cabbage
    expect(monogramInk('#fff')).toBe('var(--color-marker-ink)')
  })

  it('falls back to paper for anything it cannot read', () => {
    expect(monogramInk('tomato')).toBe('var(--color-paper)')
    expect(monogramInk('')).toBe('var(--color-paper)')
  })
})