import { describe, it, expect, beforeEach } from 'vitest'
import { db, getLastSync, setLastSync, getSession, saveSession, clearSession } from './db.js'

beforeEach(async () => {
  await Promise.all(db.tables.map(t => t.clear()))
})

describe('db schema', () => {
  it('has expected tables', () => {
    const names = db.tables.map(t => t.name).sort()
    expect(names).toEqual([
      'attendees', 'departments', 'event', 'meta',
      'outbox', 'session', 'shifts', 'volunteer_shifts', 'volunteers',
    ])
  })
})

describe('session', () => {
  it('returns undefined when no session', async () => {
    const s = await getSession()
    expect(s).toBeUndefined()
  })

  it('saves and retrieves session', async () => {
    await saveSession('tok123', { id: 1, username: 'admin', role: 'admin' })
    const s = await getSession()
    expect(s.token).toBe('tok123')
    expect(s.user.username).toBe('admin')
  })

  it('clears session and meta', async () => {
    await saveSession('tok123', { id: 1 })
    await setLastSync('2026-01-01T00:00:00Z')
    await clearSession()
    expect(await getSession()).toBeUndefined()
    expect(await getLastSync()).toBe('')
  })
})

describe('lastSync', () => {
  it('returns empty string when unset', async () => {
    expect(await getLastSync()).toBe('')
  })

  it('roundtrips a timestamp', async () => {
    await setLastSync('2026-03-01T12:00:00Z')
    expect(await getLastSync()).toBe('2026-03-01T12:00:00Z')
  })
})