// apps/hq/test/template-render.test.ts
import { describe, it, expect } from 'vitest'
import { documentHtml } from '../src/templates'

const invoice = {
  id: 'd1', docType: 'INVOICE', docNo: 'INV/26-27-0001', fy: '2026-27', clientId: 'c1',
  docDate: '2026-07-13', status: 'draft', refDocId: null, taxablePaise: 10_000_00,
  cgstPaise: 900_00, sgstPaise: 900_00, igstPaise: 0, roundOffPaise: 0, payablePaise: 11_800_00,
  payload: { lines: [{ itemId: 'm1', name: 'POS', hsn: '998313', qty: 1, unitCode: 'NOS',
    unitPricePaise: 10_000_00, grossPaise: 10_000_00, discountPaise: 0, taxablePaise: 10_000_00,
    taxRateBp: 1800, cgstPaise: 900_00, sgstPaise: 900_00, igstPaise: 0, cessPaise: 0, lineTotalPaise: 11_800_00 }], totals: {} },
} as never
const client = { id: 'c1', code: 'CL1', name: 'Acme', stateCode: '32', address: 'Kochi', contacts: [], status: 'active', notes: '' } as never

describe('template.* rendering (default-fallback)', () => {
  it('renders built-in defaults when template.* is unset (nothing breaks pre-config)', () => {
    const html = documentHtml(invoice, client, { 'company.name': 'SiMS' })
    expect(html).toContain('TAX INVOICE')            // built-in title
    expect(html).toContain('Authorised Signatory')   // built-in signatory label
    expect(html).not.toContain('class="declaration"')
    expect(html).not.toContain('class="jurisdiction"')
    expect(html).not.toContain('class="footer-note"')
    expect(html).not.toContain('class="logo"')
  })
  it('applies each template.* override where set', () => {
    const html = documentHtml(invoice, client, {
      'company.name': 'SiMS',
      'template.title_INVOICE': 'GST INVOICE',
      'template.declaration': 'We declare the particulars are true.',
      'template.jurisdiction': 'Subject to Kochi jurisdiction',
      'template.footer_note': 'Thank you for your business.',
      'template.signatory_label': 'Proprietor',
      'template.logo': 'data:image/png;base64,AAAABBBB',
    })
    expect(html).toContain('GST INVOICE')
    expect(html).not.toContain('TAX INVOICE')
    expect(html).toContain('We declare the particulars are true.')
    expect(html).toContain('Subject to Kochi jurisdiction')
    expect(html).toContain('Thank you for your business.')
    expect(html).toContain('Proprietor')
    expect(html).not.toContain('Authorised Signatory')
    expect(html).toContain('data:image/png;base64,AAAABBBB')
  })
  it('template.terms is the editable default; a per-doc terms overrides it', () => {
    const def = documentHtml(invoice, client, { 'company.name': 'X', 'template.terms': 'Net 30 default' })
    expect(def).toContain('Net 30 default')
    const perDoc = { ...(invoice as object), payload: { ...(invoice as never as { payload: object }).payload, terms: 'Per-doc terms' } } as never
    const html = documentHtml(perDoc, client, { 'company.name': 'X', 'template.terms': 'Net 30 default' })
    expect(html).toContain('Per-doc terms')
    expect(html).not.toContain('Net 30 default')
  })
})