accounted/app/(dashboard)/page.tsx

import { redirect } from 'next/navigation'
import DashboardContent from '@/components/dashboard/DashboardContent'
import { getDisplayTotal } from '@/lib/invoices/rounding'
import { getWorklistCounts, listSuggestedMatches } from '@/lib/worklist'
import type { Deadline, OnboardingProgress } from '@/types'
import {
  getDashboardAuthContext,
  getDashboardCompanyId,
  getDashboardSettings,
  getResolvedDashboardAgentProfile,
} from './request-context'

export const dynamic = 'force-dynamic'

// Home route = Översikt (DashboardContent). The agent chat has its own nav
// entry at /chat, so / no longer forwards there. Initial setup is an optional,
// persisted surface inside the dashboard and never replaces the overview.

export default async function DashboardPage() {
  const [{ supabase, user }, companyId] = await Promise.all([
    getDashboardAuthContext(),
    getDashboardCompanyId(),
  ])

  if (!user) {
    redirect('/login')
  }

  if (!companyId) {
    redirect('/onboarding')
  }

  // Fetch current year date boundaries
  const startOfYearStr = new Date(new Date().getFullYear(), 0, 1).toISOString().split('T')[0]
  const startOfMonthStr = new Date(new Date().getFullYear(), new Date().getMonth(), 1).toISOString().split('T')[0]
  const now = new Date()
  const today = now.toISOString().split('T')[0]
  const nextWeek = new Date(now.getTime() + 7 * 24 * 60 * 60 * 1000).toISOString().split('T')[0]

  // Fetch all data in parallel
  const [
    settingsRes,
    { count: customerCount },
    { count: invoiceCount },
    { count: transactionCount },
    { data: journalLines },
    { data: unpaidInvoices },
    { data: bankConnections },
    { data: deadlines },
    { count: sieImportCount },
    { count: staleUncategorizedCount },
    { count: skatteverketTokenCount },
    agentProfile,
    worklist,
    suggestedMatches,
  ] = await Promise.all([
    getDashboardSettings(),
    supabase.from('customers').select('*', { count: 'exact', head: true }).eq('company_id', companyId),
    supabase.from('invoices').select('*', { count: 'exact', head: true }).eq('company_id', companyId),
    supabase.from('transactions').select('*', { count: 'exact', head: true }).eq('company_id', companyId),
    supabase.from('journal_entry_lines')
      .select('account_number, debit_amount, credit_amount, journal_entry:journal_entries!inner(entry_date, status, company_id)')
      .eq('journal_entry.status', 'posted')
      .eq('journal_entry.company_id', companyId)
      .gte('journal_entry.entry_date', startOfYearStr),
    supabase.from('invoices').select('total, total_sek, vat_amount, vat_amount_sek, status, ore_rounding').eq('company_id', companyId).in('status', ['sent', 'overdue']).is('credited_invoice_id', null),
    supabase.from('bank_connections').select('id, accounts_data, status, consent_expires, bank_name').eq('company_id', companyId).eq('status', 'active'),
    supabase.from('deadlines').select('*, customer:customers(id, name)').eq('company_id', companyId).eq('is_completed', false).is('dismissed_at', null)
      .or(`due_date.lt.${today},due_date.lte.${nextWeek}`).order('due_date', { ascending: true }),
    supabase.from('sie_imports').select('*', { count: 'exact', head: true }).eq('company_id', companyId).eq('status', 'completed'),
    supabase.from('transactions').select('*', { count: 'exact', head: true }).eq('company_id', companyId).is('journal_entry_id', null).eq('is_ignored', false).is('is_business', null).lt('date', new Date(now.getTime() - 14 * 24 * 60 * 60 * 1000).toISOString().split('T')[0]),
    // Skatteverket tokens are user-scoped (one BankID identity per user) but
    // carry the active company_id; either filter would work: we use user_id
    // because that's what the token-store reads/writes against.
    supabase.from('skatteverket_tokens').select('*', { count: 'exact', head: true }).eq('user_id', user.id),
    getResolvedDashboardAgentProfile(),
    // Pending-work counts + suggested matches come from lib/worklist: the
    // same source as the sidebar badges, so the numbers can never diverge.
    getWorklistCounts(supabase, companyId),
    listSuggestedMatches(supabase, companyId, 5),
  ])

  // A FAILED settings read must not masquerade as "onboarding not done":
  // that sent fully onboarded users back to the wizard on a transient query
  // failure (issue #1053). Throw to the error boundary (retryable) and only
  // redirect on a genuinely incomplete or missing settings row.
  const { data: settings, error: settingsError } = settingsRes
  if (settingsError) {
    throw new Error(`company_settings fetch failed: ${settingsError.message}`)
  }

  // If onboarding is not complete, redirect to onboarding
  if (!settings?.onboarding_complete) {
    redirect('/onboarding')
  }

  const agentBuilt = Boolean(agentProfile?.verified_at)

  const onboardingProgress: OnboardingProgress = {
    hasCustomers: (customerCount || 0) > 0,
    hasInvoices: (invoiceCount || 0) > 0,
    hasBankConnected: (bankConnections?.length || 0) > 0 || (transactionCount || 0) > 0,
    hasSIEImport: (sieImportCount || 0) > 0,
    hasSkatteverketConnected: (skatteverketTokenCount || 0) > 0,
  }

  // Calculate totals from journal entry lines using account classes
  const calculateTotals = (lines: typeof journalLines, fromDate: string) => {
    const filtered = (lines || []).filter((l) => {
      const entry = l.journal_entry as unknown as { entry_date: string; status: string }
      return entry.entry_date >= fromDate
    })

    let revenue = 0
    let expenses = 0

    for (const line of filtered) {
      const acct = line.account_number
      if (acct.startsWith('3')) {
        // Revenue: class 3, credit-normal accounts
        revenue += Math.round(((line.credit_amount || 0) - (line.debit_amount || 0)) * 100) / 100
      } else if (acct.startsWith('4') || acct.startsWith('5') || acct.startsWith('6') || acct.startsWith('7')) {
        // Expenses: classes 4-7, debit-normal accounts
        expenses += Math.round(((line.debit_amount || 0) - (line.credit_amount || 0)) * 100) / 100
      }
    }

    revenue = Math.round(revenue * 100) / 100
    expenses = Math.round(expenses * 100) / 100

    return { income: revenue, expenses, net: Math.round((revenue - expenses) * 100) / 100 }
  }

  const ytdTotals = calculateTotals(journalLines, startOfYearStr)
  const mtdTotals = calculateTotals(journalLines, startOfMonthStr)

  // Mirror the per-invoice öresavrundning rule used on the invoice list/detail
  // pages: sum the displayed (rounded) SEK amount per invoice so the dashboard
  // total matches what the user sees on the invoice list when the setting is on.
  const unpaidTotal = (unpaidInvoices || []).reduce(
    (sum, inv) => sum + getDisplayTotal(
      { total: Number(inv.total_sek || inv.total), currency: 'SEK', ore_rounding: inv.ore_rounding },
      settings,
    ).displayed,
    0
  )

  const unpaidVatTotal = (unpaidInvoices || []).reduce(
    (sum, inv) => sum + Number(inv.vat_amount_sek || inv.vat_amount || 0),
    0
  )

  const overdueCount = (unpaidInvoices || []).filter(
    (inv) => inv.status === 'overdue'
  ).length

  let bankBalance: number | null = null
  if (bankConnections && bankConnections.length > 0) {
    const allBalances = bankConnections.flatMap(conn => {
      const accounts = conn.accounts_data as { balance: number }[] | null
      return accounts || []
    })
    if (allBalances.length > 0) {
      bankBalance = allBalances.reduce((sum, acc) => sum + (acc.balance || 0), 0)
    }
  }

  const nowMs = new Date().getTime()
  const expiringBankConnections = (bankConnections || [])
    .filter(conn => {
      if (!conn.consent_expires) return false
      const daysLeft = Math.ceil(
        (new Date(conn.consent_expires).getTime() - nowMs) / (1000 * 60 * 60 * 24)
      )
      return daysLeft > 0 && daysLeft <= 14
    })
    .map(conn => ({
      id: conn.id as string,
      bank_name: conn.bank_name as string,
      days_left: Math.ceil(
        (new Date(conn.consent_expires!).getTime() - nowMs) / (1000 * 60 * 60 * 24)
      ),
    }))

  return (
    <DashboardContent
      companyId={companyId}
      agentBuilt={agentBuilt}
      summary={{
        ytd: ytdTotals,
        mtd: mtdTotals,
        unpaidInvoicesCount: (unpaidInvoices || []).length,
        unpaidInvoicesTotal: unpaidTotal,
        unpaidVatTotal,
        overdueInvoicesCount: overdueCount,
        bankBalance,
        expiringBankConnections,
        deadlines: (deadlines || []) as Deadline[],
        staleUncategorizedCount: staleUncategorizedCount || 0,
      }}
      worklist={worklist}
      suggestedMatches={suggestedMatches}
      onboardingProgress={onboardingProgress}
      initialSetup={{
        path: settings.initial_setup_path ?? null,
        completedAt: settings.initial_setup_completed_at ?? null,
        dismissedAt: settings.initial_setup_dismissed_at ?? null,
      }}
    />
  )
}