// Seam tests for the Y/N ↔ boolean codec shared by services (write) and
// views (read). Bug-fix coverage: `toApiBool('N')` must return 'N', even
// though 'N' is a non-empty (truthy) string in JS — a naive
// `value ? 'Y' : 'N'` returned 'Y' for that case and silently corrupted
// every disabled_flag write.
import { describe, it, expect } from 'vitest'
import { toApiBool, fromApiBool } from '@/api/boolCodec.js'

describe('fromApiBool', () => {
  it.each([
    ['Y', true],
    ['N', false],
    [true, true],
    [false, false],
    [1, true],
    [0, false],
    [null, false],
    [undefined, false],
    ['', false],
    ['maybe', false],
    [{}, false],
    [[], false],
  ])('fromApiBool(%j) === %j', (input, expected) => {
    expect(fromApiBool(input)).toBe(expected)
  })
})

describe('toApiBool', () => {
  it.each([
    [true, 'Y'],
    [false, 'N'],
    ['Y', 'Y'],
    ['N', 'N'],
    [1, 'Y'],
    [0, 'N'],
    [null, 'N'],
    [undefined, 'N'],
    ['', 'N'],
    ['maybe', 'N'],
  ])('toApiBool(%j) === %j', (input, expected) => {
    expect(toApiBool(input)).toBe(expected)
  })

  it("correctly encodes 'N' as 'N' (catches the truthy-string trap)", () => {
    // Regression: a naive `value ? 'Y' : 'N'` would return 'Y' for the
    // non-empty string 'N' since non-empty strings are truthy.
    expect(toApiBool('N')).toBe('N')
  })
})

describe('round-trip', () => {
  it.each([
    [true],
    [false],
    [null],
    [undefined],
    [''],
    ['Y'],
    ['N'],
    ['maybe'],
    [1],
    [0],
  ])('toApiBool stabilizes after one pass for %j', (input) => {
    const once = toApiBool(input)
    expect(['Y', 'N']).toContain(once)
    expect(toApiBool(once)).toBe(once)
  })
})