/**
 * Tests for the generic transaction ingestion pipeline.
 *
 * Covers deduplication, insert, invoice matching, auto-categorization,
 * and result aggregation.
 */
import { describe, it, expect, vi, beforeEach } from 'vitest'
import { ingestTransactions, type RawTransaction } from '../ingest'
import { makeJournalEntry, makeTransaction } from '@/tests/helpers'

// ---------------------------------------------------------------------------
// Mocks
// ---------------------------------------------------------------------------

const mockEvaluateMappingRules = vi.fn()
vi.mock('@/lib/bookkeeping/mapping-engine', () => ({
  evaluateMappingRules: (...args: unknown[]) => mockEvaluateMappingRules(...args),
}))

const mockCreateTransactionJournalEntry = vi.fn()
vi.mock('@/lib/bookkeeping/transaction-entries', () => ({
  createTransactionJournalEntry: (...args: unknown[]) =>
    mockCreateTransactionJournalEntry(...args),
}))

const mockGetBestInvoiceMatch = vi.fn()
vi.mock('@/lib/invoices/invoice-matching', () => ({
  getBestInvoiceMatch: (...args: unknown[]) => mockGetBestInvoiceMatch(...args),
}))

const mockTryReconcileTransaction = vi.fn()
const mockFetchUnlinkedGLLines = vi.fn()
vi.mock('@/lib/reconciliation/bank-reconciliation', () => ({
  tryReconcileTransaction: (...args: unknown[]) => mockTryReconcileTransaction(...args),
  fetchUnlinkedGLLines: (...args: unknown[]) => mockFetchUnlinkedGLLines(...args),
}))

// ---------------------------------------------------------------------------
// Queue-based Supabase mock
// ---------------------------------------------------------------------------

function createQueueMockSupabase() {
  const resultQueue: { data: unknown; error: unknown }[] = []

  /**
   * Push one or more results onto the queue.
   * Each awaited Supabase chain pops the next result in FIFO order.
   */
  const enqueue = (...results: { data?: unknown; error?: unknown }[]) => {
    for (const r of results) {
      resultQueue.push({ data: r.data ?? null, error: r.error ?? null })
    }
  }

  const buildChain = (): unknown => {
    const handler: ProxyHandler<object> = {
      get(_target, prop) {
        if (prop === 'then') {
          const next = resultQueue.shift() ?? { data: null, error: null }
          return (resolve: (v: unknown) => void) => resolve(next)
        }
        return (..._args: unknown[]) => buildChain()
      },
    }
    return new Proxy({}, handler)
  }

  const supabase = {
    from: vi.fn().mockImplementation(() => buildChain()),
    rpc: vi.fn().mockImplementation(() => buildChain()),
  }

  return { supabase, enqueue }
}

// ---------------------------------------------------------------------------
// Helpers
// ---------------------------------------------------------------------------

const USER_ID = 'user-1'

function makeRaw(overrides: Partial<RawTransaction> = {}): RawTransaction {
  return {
    date: '2024-06-15',
    description: 'Test transaction',
    amount: -250.0,
    currency: 'SEK',
    external_id: `ext-${Math.random().toString(36).slice(2, 8)}`,
    mcc_code: null,
    merchant_name: null,
    reference: null,
    bank_connection_id: null,
    import_source: 'test',
    ...overrides,
  }
}

function makeMappingResult(overrides: Record<string, unknown> = {}) {
  return {
    rule: null,
    debit_account: '5410',
    credit_account: '1930',
    risk_level: 'low',
    confidence: 0.9,
    requires_review: false,
    default_private: false,
    vat_lines: [],
    description: 'Office supplies',
    ...overrides,
  }
}

// ---------------------------------------------------------------------------
// Tests
// ---------------------------------------------------------------------------

describe('ingestTransactions', () => {
  beforeEach(() => {
    vi.clearAllMocks()
    // Default: no GL lines for reconciliation
    mockFetchUnlinkedGLLines.mockResolvedValue([])
    mockTryReconcileTransaction.mockReturnValue(null)
  })

  // -----------------------------------------------------------------------
  // 1. Successfully imports new transactions
  // -----------------------------------------------------------------------
  it('imports new transactions when no duplicate exists', async () => {
    const { supabase, enqueue } = createQueueMockSupabase()
    const raw = makeRaw({ amount: -100 })
    const inserted = makeTransaction({ id: 'tx-1', external_id: raw.external_id })

    // Booked transaction map query (no booked transactions)
    enqueue({ data: [], error: null })
    // Supplier invoices fetch (no unpaid invoices)
    enqueue({ data: [], error: null })
    // Dedup check returns null (no existing row)
    enqueue({ data: null, error: null })
    // Insert returns the new transaction
    enqueue({ data: inserted, error: null })
    // evaluateMappingRules will be called but we want low confidence
    mockEvaluateMappingRules.mockResolvedValue(makeMappingResult({ confidence: 0.5 }))

    const result = await ingestTransactions(supabase as never, USER_ID, [raw])

    expect(result.imported).toBe(1)
    expect(result.duplicates).toBe(0)
    expect(result.errors).toBe(0)
    expect(result.transaction_ids).toEqual(['tx-1'])
  })

  // -----------------------------------------------------------------------
  // 2. Detects duplicates
  // -----------------------------------------------------------------------
  it('detects duplicates via external_id', async () => {
    const { supabase, enqueue } = createQueueMockSupabase()
    const raw = makeRaw()

    // Booked transaction map query
    enqueue({ data: [], error: null })
    // Supplier invoices fetch
    enqueue({ data: [], error: null })
    // Dedup check returns an existing record
    enqueue({ data: { id: 'existing-tx-1' }, error: null })

    const result = await ingestTransactions(supabase as never, USER_ID, [raw])

    expect(result.duplicates).toBe(1)
    expect(result.imported).toBe(0)
    expect(result.transaction_ids).toEqual([])
  })

  // -----------------------------------------------------------------------
  // 3. Counts errors when insert fails
  // -----------------------------------------------------------------------
  it('counts errors when insert fails', async () => {
    const { supabase, enqueue } = createQueueMockSupabase()
    const raw = makeRaw()

    // Booked transaction map query
    enqueue({ data: [], error: null })
    // Supplier invoices fetch
    enqueue({ data: [], error: null })
    // Dedup check: no duplicate
    enqueue({ data: null, error: null })
    // Insert fails
    enqueue({ data: null, error: { message: 'DB constraint violation' } })

    const result = await ingestTransactions(supabase as never, USER_ID, [raw])

    expect(result.errors).toBe(1)
    expect(result.imported).toBe(0)
    expect(result.transaction_ids).toEqual([])
  })

  // -----------------------------------------------------------------------
  // 4. Auto-matches invoices for income transactions (amount > 0)
  // -----------------------------------------------------------------------
  it('auto-matches invoices for income transactions', async () => {
    const { supabase, enqueue } = createQueueMockSupabase()
    const raw = makeRaw({ amount: 5000, description: 'Payment received' })
    const inserted = makeTransaction({
      id: 'tx-income',
      amount: 5000,
      external_id: raw.external_id,
    })

    // Booked transaction map query
    enqueue({ data: [], error: null })
    // Supplier invoices fetch
    enqueue({ data: [], error: null })
    // Dedup: no duplicate
    enqueue({ data: null, error: null })
    // Insert returns the new transaction
    enqueue({ data: inserted, error: null })
    // Invoice match update (supabase.from('transactions').update(...))
    enqueue({ data: null, error: null })
    // Mapping rules auto-categorization update (if triggered)
    enqueue({ data: null, error: null })

    mockGetBestInvoiceMatch.mockResolvedValue({
      invoice: { id: 'inv-1' },
      confidence: 0.95,
      matchReason: 'OCR reference match',
    })
    mockEvaluateMappingRules.mockResolvedValue(makeMappingResult({ confidence: 0.5 }))

    const result = await ingestTransactions(supabase as never, USER_ID, [raw])

    expect(result.auto_matched_invoices).toBe(1)
    expect(mockGetBestInvoiceMatch).toHaveBeenCalledWith(
      expect.anything(), // supabase client
      USER_ID,
      expect.objectContaining({ id: 'tx-income' }),
      0.50
    )
  })

  // -----------------------------------------------------------------------
  // 5. Does not attempt invoice matching for expenses (amount < 0)
  // -----------------------------------------------------------------------
  it('does not attempt invoice matching for expenses', async () => {
    const { supabase, enqueue } = createQueueMockSupabase()
    const raw = makeRaw({ amount: -350 })
    const inserted = makeTransaction({
      id: 'tx-expense',
      amount: -350,
      external_id: raw.external_id,
    })

    // Booked transaction map query
    enqueue({ data: [], error: null })
    // Supplier invoices fetch
    enqueue({ data: [], error: null })
    // Dedup: no duplicate
    enqueue({ data: null, error: null })
    // Insert
    enqueue({ data: inserted, error: null })

    mockEvaluateMappingRules.mockResolvedValue(makeMappingResult({ confidence: 0.5 }))

    const result = await ingestTransactions(supabase as never, USER_ID, [raw])

    expect(result.imported).toBe(1)
    expect(result.auto_matched_invoices).toBe(0)
    expect(mockGetBestInvoiceMatch).not.toHaveBeenCalled()
  })

  // -----------------------------------------------------------------------
  // 6. Auto-categorizes when mapping confidence >= 0.8
  // -----------------------------------------------------------------------
  it('auto-categorizes when mapping confidence is at least 0.8', async () => {
    const { supabase, enqueue } = createQueueMockSupabase()
    const raw = makeRaw({ amount: -500, mcc_code: 5411, merchant_name: 'ICA' })
    const inserted = makeTransaction({
      id: 'tx-cat',
      amount: -500,
      external_id: raw.external_id,
    })
    const journalEntry = makeJournalEntry({ id: 'je-1' })

    // Booked transaction map query
    enqueue({ data: [], error: null })
    // Supplier invoices fetch
    enqueue({ data: [], error: null })
    // Dedup: no duplicate
    enqueue({ data: null, error: null })
    // Insert
    enqueue({ data: inserted, error: null })
    // Update after journal entry creation
    enqueue({ data: null, error: null })

    mockEvaluateMappingRules.mockResolvedValue(
      makeMappingResult({ confidence: 0.85, requires_review: false })
    )
    mockCreateTransactionJournalEntry.mockResolvedValue(journalEntry)

    const result = await ingestTransactions(supabase as never, USER_ID, [raw])

    expect(result.auto_categorized).toBe(1)
    expect(mockCreateTransactionJournalEntry).toHaveBeenCalledWith(
      expect.anything(),
      USER_ID,
      expect.objectContaining({ id: 'tx-cat' }),
      expect.objectContaining({ confidence: 0.85 })
    )
  })

  // -----------------------------------------------------------------------
  // 7. Skips auto-categorization when confidence < 0.8
  // -----------------------------------------------------------------------
  it('skips auto-categorization when confidence is below 0.8', async () => {
    const { supabase, enqueue } = createQueueMockSupabase()
    const raw = makeRaw({ amount: -200 })
    const inserted = makeTransaction({
      id: 'tx-lowconf',
      amount: -200,
      external_id: raw.external_id,
    })

    // Booked transaction map query
    enqueue({ data: [], error: null })
    // Supplier invoices fetch
    enqueue({ data: [], error: null })
    // Dedup: no duplicate
    enqueue({ data: null, error: null })
    // Insert
    enqueue({ data: inserted, error: null })

    mockEvaluateMappingRules.mockResolvedValue(
      makeMappingResult({ confidence: 0.6 })
    )

    const result = await ingestTransactions(supabase as never, USER_ID, [raw])

    expect(result.auto_categorized).toBe(0)
    expect(mockCreateTransactionJournalEntry).not.toHaveBeenCalled()
  })

  // -----------------------------------------------------------------------
  // 7b. Skips auto-categorization when requires_review is true
  // -----------------------------------------------------------------------
  it('skips auto-categorization when requires_review is true even if confidence is high', async () => {
    const { supabase, enqueue } = createQueueMockSupabase()
    const raw = makeRaw({ amount: -800 })
    const inserted = makeTransaction({
      id: 'tx-review',
      amount: -800,
      external_id: raw.external_id,
    })

    // Booked transaction map query
    enqueue({ data: [], error: null })
    // Supplier invoices fetch
    enqueue({ data: [], error: null })
    // Dedup: no duplicate
    enqueue({ data: null, error: null })
    // Insert
    enqueue({ data: inserted, error: null })

    mockEvaluateMappingRules.mockResolvedValue(
      makeMappingResult({ confidence: 0.95, requires_review: true })
    )

    const result = await ingestTransactions(supabase as never, USER_ID, [raw])

    expect(result.auto_categorized).toBe(0)
    expect(mockCreateTransactionJournalEntry).not.toHaveBeenCalled()
  })

  // -----------------------------------------------------------------------
  // 8. Returns correct IngestResult totals
  // -----------------------------------------------------------------------
  it('returns correct IngestResult totals', async () => {
    const { supabase, enqueue } = createQueueMockSupabase()
    const raw1 = makeRaw({ external_id: 'ext-a', amount: -100 })
    const raw2 = makeRaw({ external_id: 'ext-b', amount: -200 })

    const inserted1 = makeTransaction({ id: 'tx-a', amount: -100 })
    const inserted2 = makeTransaction({ id: 'tx-b', amount: -200 })

    // Booked transaction map query
    enqueue({ data: [], error: null })
    // Supplier invoices fetch
    enqueue({ data: [], error: null })
    // Transaction 1: dedup (no match), insert OK
    enqueue({ data: null, error: null })
    enqueue({ data: inserted1, error: null })
    // Transaction 2: dedup (no match), insert OK
    enqueue({ data: null, error: null })
    enqueue({ data: inserted2, error: null })

    mockEvaluateMappingRules.mockResolvedValue(makeMappingResult({ confidence: 0.5 }))

    const result = await ingestTransactions(supabase as never, USER_ID, [raw1, raw2])

    expect(result.imported).toBe(2)
    expect(result.duplicates).toBe(0)
    expect(result.errors).toBe(0)
    expect(result.auto_categorized).toBe(0)
    expect(result.auto_matched_invoices).toBe(0)
    expect(result.transaction_ids).toEqual(['tx-a', 'tx-b'])
  })

  // -----------------------------------------------------------------------
  // 9. Handles mixed batch (new, duplicates, errors)
  // -----------------------------------------------------------------------
  it('handles a mixed batch of new transactions, duplicates, and errors', async () => {
    const { supabase, enqueue } = createQueueMockSupabase()

    const rawNew = makeRaw({ external_id: 'ext-new', amount: 3000 })
    const rawDup = makeRaw({ external_id: 'ext-dup', amount: -150 })
    const rawErr = makeRaw({ external_id: 'ext-err', amount: -75 })

    const insertedNew = makeTransaction({
      id: 'tx-new',
      amount: 3000,
      external_id: 'ext-new',
    })

    // Booked transaction map query
    enqueue({ data: [], error: null })
    // Supplier invoices fetch
    enqueue({ data: [], error: null })
    // Transaction rawNew: dedup (no match), insert OK
    enqueue({ data: null, error: null })
    enqueue({ data: insertedNew, error: null })
    // Invoice match update for income transaction
    enqueue({ data: null, error: null })
    // Auto-categorization update
    enqueue({ data: null, error: null })

    // Transaction rawDup: dedup returns existing record
    enqueue({ data: { id: 'existing-dup' }, error: null })

    // Transaction rawErr: dedup (no match), insert fails
    enqueue({ data: null, error: null })
    enqueue({ data: null, error: { message: 'Insert failed' } })

    // Income transaction gets an invoice match
    mockGetBestInvoiceMatch.mockResolvedValue({
      invoice: { id: 'inv-match' },
      confidence: 0.95,
      matchReason: 'Exact amount match',
    })

    // Auto-categorization with high confidence
    mockEvaluateMappingRules.mockResolvedValue(
      makeMappingResult({ confidence: 0.85 })
    )
    const journalEntry = makeJournalEntry({ id: 'je-mixed' })
    mockCreateTransactionJournalEntry.mockResolvedValue(journalEntry)

    const result = await ingestTransactions(
      supabase as never,
      USER_ID,
      [rawNew, rawDup, rawErr]
    )

    expect(result.imported).toBe(1)
    expect(result.duplicates).toBe(1)
    expect(result.errors).toBe(1)
    expect(result.auto_matched_invoices).toBe(1)
    expect(result.auto_categorized).toBe(1)
    expect(result.transaction_ids).toEqual(['tx-new'])
  })

  // -----------------------------------------------------------------------
  // Edge: empty input array
  // -----------------------------------------------------------------------
  it('returns zero totals for an empty input array', async () => {
    const { supabase } = createQueueMockSupabase()

    const result = await ingestTransactions(supabase as never, USER_ID, [])

    expect(result).toEqual({
      imported: 0,
      duplicates: 0,
      reconciled: 0,
      auto_categorized: 0,
      auto_matched_invoices: 0,
      errors: 0,
      transaction_ids: [],
    })
  })

  // -----------------------------------------------------------------------
  // Edge: invoice matching error is non-critical
  // -----------------------------------------------------------------------
  it('continues processing when invoice matching throws', async () => {
    const { supabase, enqueue } = createQueueMockSupabase()
    const raw = makeRaw({ amount: 1000 })
    const inserted = makeTransaction({ id: 'tx-inv-err', amount: 1000 })

    // Booked transaction map query
    enqueue({ data: [], error: null })
    // Supplier invoices fetch
    enqueue({ data: [], error: null })
    enqueue({ data: null, error: null })
    enqueue({ data: inserted, error: null })

    mockGetBestInvoiceMatch.mockRejectedValue(new Error('Network error'))
    mockEvaluateMappingRules.mockResolvedValue(makeMappingResult({ confidence: 0.5 }))

    const result = await ingestTransactions(supabase as never, USER_ID, [raw])

    // Should still count as imported even though invoice matching failed
    expect(result.imported).toBe(1)
    expect(result.auto_matched_invoices).toBe(0)
    expect(result.errors).toBe(0)
  })

  // -----------------------------------------------------------------------
  // Edge: auto-categorization error is non-critical
  // -----------------------------------------------------------------------
  it('continues processing when auto-categorization throws', async () => {
    const { supabase, enqueue } = createQueueMockSupabase()
    const raw = makeRaw({ amount: -400 })
    const inserted = makeTransaction({ id: 'tx-cat-err', amount: -400 })

    // Booked transaction map query
    enqueue({ data: [], error: null })
    // Supplier invoices fetch
    enqueue({ data: [], error: null })
    enqueue({ data: null, error: null })
    enqueue({ data: inserted, error: null })

    mockEvaluateMappingRules.mockRejectedValue(new Error('Mapping error'))

    const result = await ingestTransactions(supabase as never, USER_ID, [raw])

    expect(result.imported).toBe(1)
    expect(result.auto_categorized).toBe(0)
    expect(result.errors).toBe(0)
  })

  // -----------------------------------------------------------------------
  // Reconciliation: matched transactions skip auto-categorization
  // -----------------------------------------------------------------------
  it('reconciles transactions against GL lines and skips auto-categorization', async () => {
    const { supabase, enqueue } = createQueueMockSupabase()
    const raw = makeRaw({ amount: -500, external_id: 'ext-recon' })
    const inserted = makeTransaction({
      id: 'tx-recon',
      amount: -500,
      external_id: 'ext-recon',
      currency: 'SEK',
    })

    const glLine = {
      line_id: 'line-1',
      journal_entry_id: 'je-1',
      debit_amount: 0,
      credit_amount: 500,
      line_description: null,
      entry_date: '2024-06-15',
      voucher_number: 1,
      voucher_series: 'A',
      entry_description: 'Test entry',
      source_type: 'import',
    }

    // Pre-fetch returns GL lines
    mockFetchUnlinkedGLLines.mockResolvedValue([glLine])
    // tryReconcileTransaction returns a match
    mockTryReconcileTransaction.mockReturnValue({
      transaction: inserted,
      glLine,
      method: 'auto_exact',
      confidence: 0.95,
    })

    // Booked transaction map query
    enqueue({ data: [], error: null })
    // Supplier invoices fetch
    enqueue({ data: [], error: null })
    // Dedup: no duplicate
    enqueue({ data: null, error: null })
    // Insert
    enqueue({ data: inserted, error: null })
    // Reconciliation update
    enqueue({ data: null, error: null })

    const result = await ingestTransactions(supabase as never, USER_ID, [raw])

    expect(result.imported).toBe(1)
    expect(result.reconciled).toBe(1)
    // Should NOT have attempted auto-categorization
    expect(mockEvaluateMappingRules).not.toHaveBeenCalled()
    expect(mockGetBestInvoiceMatch).not.toHaveBeenCalled()
  })

  // -----------------------------------------------------------------------
  // Reconciliation: falls through when no GL matches
  // -----------------------------------------------------------------------
  it('falls through to auto-categorization when reconciliation finds no match', async () => {
    const { supabase, enqueue } = createQueueMockSupabase()
    const raw = makeRaw({ amount: -200 })
    const inserted = makeTransaction({ id: 'tx-no-recon', amount: -200 })

    mockFetchUnlinkedGLLines.mockResolvedValue([
      {
        line_id: 'line-other',
        journal_entry_id: 'je-other',
        debit_amount: 999,
        credit_amount: 0,
        entry_date: '2024-01-01',
        voucher_number: 1,
        voucher_series: 'A',
        entry_description: 'Unrelated',
        source_type: 'import',
        line_description: null,
      },
    ])
    mockTryReconcileTransaction.mockReturnValue(null)

    // Booked transaction map query
    enqueue({ data: [], error: null })
    // Supplier invoices fetch
    enqueue({ data: [], error: null })
    // Dedup: no duplicate
    enqueue({ data: null, error: null })
    // Insert
    enqueue({ data: inserted, error: null })

    mockEvaluateMappingRules.mockResolvedValue(makeMappingResult({ confidence: 0.5 }))

    const result = await ingestTransactions(supabase as never, USER_ID, [raw])

    expect(result.imported).toBe(1)
    expect(result.reconciled).toBe(0)
    // Should have fallen through to auto-categorization
    expect(mockEvaluateMappingRules).toHaveBeenCalled()
  })

  // -----------------------------------------------------------------------
  // Reconciliation: error is non-critical
  // -----------------------------------------------------------------------
  it('continues when reconciliation throws an error', async () => {
    const { supabase, enqueue } = createQueueMockSupabase()
    const raw = makeRaw({ amount: -300 })
    const inserted = makeTransaction({ id: 'tx-recon-err', amount: -300 })

    mockFetchUnlinkedGLLines.mockRejectedValue(new Error('RPC error'))

    // Booked transaction map query
    enqueue({ data: [], error: null })
    // Supplier invoices fetch
    enqueue({ data: [], error: null })
    // Dedup: no duplicate
    enqueue({ data: null, error: null })
    // Insert
    enqueue({ data: inserted, error: null })

    mockEvaluateMappingRules.mockResolvedValue(makeMappingResult({ confidence: 0.5 }))

    const result = await ingestTransactions(supabase as never, USER_ID, [raw])

    expect(result.imported).toBe(1)
    expect(result.reconciled).toBe(0)
    expect(result.errors).toBe(0)
  })

  // -----------------------------------------------------------------------
  // Content-based dedup: cross-source duplicate detection
  // -----------------------------------------------------------------------
  it('skips transactions that match already-booked ones by date+amount', async () => {
    const { supabase, enqueue } = createQueueMockSupabase()
    const raw = makeRaw({
      external_id: 'psd2_conn123_tx456',
      date: '2024-06-15',
      amount: -250,
    })

    // Booked transaction map returns a booked tx with same date+amount
    enqueue({
      data: [{ date: '2024-06-15', amount: -250 }],
      error: null,
    })
    // Supplier invoices fetch
    enqueue({ data: [], error: null })
    // external_id dedup: no match (different source)
    enqueue({ data: null, error: null })

    const result = await ingestTransactions(supabase as never, USER_ID, [raw])

    expect(result.duplicates).toBe(1)
    expect(result.imported).toBe(0)
  })

  it('imports transactions when booked ones have different amounts', async () => {
    const { supabase, enqueue } = createQueueMockSupabase()
    const raw = makeRaw({
      external_id: 'psd2_conn123_tx789',
      date: '2024-06-15',
      amount: -300,
    })
    const inserted = makeTransaction({ id: 'tx-new', amount: -300 })

    // Booked transaction map: same date but different amount
    enqueue({
      data: [{ date: '2024-06-15', amount: -250 }],
      error: null,
    })
    // Supplier invoices fetch
    enqueue({ data: [], error: null })
    // external_id dedup: no match
    enqueue({ data: null, error: null })
    // Insert
    enqueue({ data: inserted, error: null })

    mockEvaluateMappingRules.mockResolvedValue(makeMappingResult({ confidence: 0.5 }))

    const result = await ingestTransactions(supabase as never, USER_ID, [raw])

    expect(result.imported).toBe(1)
    expect(result.duplicates).toBe(0)
  })

  it('handles multiple booked transactions with same date+amount correctly', async () => {
    const { supabase, enqueue } = createQueueMockSupabase()

    // Three incoming transactions with the same date+amount
    const raw1 = makeRaw({ external_id: 'psd2_a', date: '2024-06-15', amount: -100 })
    const raw2 = makeRaw({ external_id: 'psd2_b', date: '2024-06-15', amount: -100 })
    const raw3 = makeRaw({ external_id: 'psd2_c', date: '2024-06-15', amount: -100 })

    const inserted = makeTransaction({ id: 'tx-new', amount: -100 })

    // Booked map: 2 existing booked transactions with same date+amount
    // So 2 of the 3 incoming should be skipped, 1 should be imported
    enqueue({
      data: [
        { date: '2024-06-15', amount: -100 },
        { date: '2024-06-15', amount: -100 },
      ],
      error: null,
    })
    // Supplier invoices fetch
    enqueue({ data: [], error: null })

    // raw1: external_id dedup (no match) -> content dedup matches (bookedCount=2 -> 1)
    enqueue({ data: null, error: null })
    // raw2: external_id dedup (no match) -> content dedup matches (bookedCount=1 -> 0)
    enqueue({ data: null, error: null })
    // raw3: external_id dedup (no match) -> content dedup exhausted -> insert
    enqueue({ data: null, error: null })
    enqueue({ data: inserted, error: null })

    mockEvaluateMappingRules.mockResolvedValue(makeMappingResult({ confidence: 0.5 }))

    const result = await ingestTransactions(supabase as never, USER_ID, [raw1, raw2, raw3])

    expect(result.duplicates).toBe(2)
    expect(result.imported).toBe(1)
  })

  it('continues normally when booked transaction map query fails', async () => {
    const { supabase, enqueue } = createQueueMockSupabase()
    const raw = makeRaw({ amount: -200 })
    const inserted = makeTransaction({ id: 'tx-mapfail', amount: -200 })

    // Booked map query throws (caught by try/catch in buildBookedTransactionMap)
    enqueue({ error: { message: 'Query failed' } })
    // Supplier invoices fetch
    enqueue({ data: [], error: null })
    // external_id dedup: no match
    enqueue({ data: null, error: null })
    // Insert
    enqueue({ data: inserted, error: null })

    mockEvaluateMappingRules.mockResolvedValue(makeMappingResult({ confidence: 0.5 }))

    const result = await ingestTransactions(supabase as never, USER_ID, [raw])

    expect(result.imported).toBe(1)
    expect(result.duplicates).toBe(0)
  })
})