import assert from 'node:assert/strict'
import test from 'node:test'

import { SLASH_COMMANDS, filterSlashCommands, slashCommandValue } from '../src/slashCommands.ts'

test('a lone slash exposes the available command catalog', () => {
  assert.ok(SLASH_COMMANDS.length >= 8)
  assert.deepEqual(filterSlashCommands('/'), SLASH_COMMANDS)
})

test('a command prefix filters names case-insensitively', () => {
  assert.deepEqual(filterSlashCommands('/plu').map(item => item.name), ['/plugins'])
  assert.deepEqual(filterSlashCommands('/PLU').map(item => item.name), ['/plugins'])
})

test('suggestions only appear for a single command token at the start', () => {
  assert.deepEqual(filterSlashCommands('bonjour /'), [])
  assert.deepEqual(filterSlashCommands('/plugins maintenant'), [])
  assert.deepEqual(filterSlashCommands('/plugins\ntexte'), [])
})

test('selecting a command leaves a space ready for optional arguments', () => {
  const plugins = SLASH_COMMANDS.find(item => item.name === '/plugins')
  assert.ok(plugins)
  assert.equal(slashCommandValue(plugins), '/plugins ')
})