root
181 lines
8.8 KiB
PHP
181 lines
8.8 KiB
PHP
<?php
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namespace App\Services\Finance;
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use App\Models\FinanceBalanceCarryforward;
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use Illuminate\Support\Facades\DB;
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use Illuminate\Support\Facades\Schema;
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class PriorYearBalanceCarryforwardService
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{
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public function preview(array $filters): array
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{
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$from = $filters['from_school_year'];
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$to = $filters['to_school_year'];
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$minimum = (float) ($filters['minimum_balance'] ?? 0);
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$parentId = $filters['parent_id'] ?? null;
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$payments = $this->paymentTotals($from);
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$discounts = $this->discountTotals();
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$refunds = $this->refundTotals();
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$q = DB::table('invoices')->where('school_year', $from);
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if ($parentId) $q->where('parent_id', $parentId);
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$invoices = $q->get();
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$byParent = [];
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foreach ($invoices as $invoice) {
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$invoiceId = (int) $invoice->id;
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$balance = max(0, (float) ($invoice->total_amount ?? 0) - (float) ($payments[$invoiceId] ?? 0) - (float) ($discounts[$invoiceId] ?? 0) - (float) ($refunds[$invoiceId] ?? 0));
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if ($balance <= 0) continue;
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$pid = (int) $invoice->parent_id;
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if (!isset($byParent[$pid])) {
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$existing = FinanceBalanceCarryforward::query()->where('parent_id', $pid)->where('from_school_year', $from)->where('to_school_year', $to)->first();
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$byParent[$pid] = [
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'parent_id' => $pid,
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'from_school_year' => $from,
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'to_school_year' => $to,
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'source_invoice_ids' => [],
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'source_balance_amount' => 0.0,
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'proposed_carryforward_amount' => 0.0,
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'existing_carryforward_id' => $existing?->id,
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'warnings' => [],
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];
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if ($existing) $byParent[$pid]['warnings'][] = 'source invoice already carried forward';
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}
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$byParent[$pid]['source_invoice_ids'][] = $invoiceId;
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$byParent[$pid]['source_balance_amount'] += $balance;
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$byParent[$pid]['proposed_carryforward_amount'] += $balance;
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}
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$rows = array_values(array_filter($byParent, fn($r) => $r['source_balance_amount'] >= $minimum));
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usort($rows, fn($a, $b) => $b['source_balance_amount'] <=> $a['source_balance_amount']);
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return ['fromSchoolYear' => $from, 'toSchoolYear' => $to, 'generatedAt' => now()->toISOString(), 'rows' => $rows];
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}
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public function storeDrafts(array $filters, ?int $actorId): array
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{
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$preview = $this->preview($filters);
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$created = [];
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foreach ($preview['rows'] as $row) {
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if (!empty($row['existing_carryforward_id'])) continue;
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$created[] = FinanceBalanceCarryforward::query()->create([
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'parent_id' => $row['parent_id'],
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'from_school_year' => $row['from_school_year'],
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'to_school_year' => $row['to_school_year'],
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'source_invoice_ids_json' => $row['source_invoice_ids'],
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'source_balance_amount' => $row['source_balance_amount'],
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'carryforward_amount' => $row['proposed_carryforward_amount'],
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'remaining_amount' => $row['proposed_carryforward_amount'],
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'status' => 'draft',
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'reason' => $filters['reason'] ?? null,
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'created_by' => $actorId,
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'metadata_json' => ['warnings' => $row['warnings']],
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])->toArray();
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}
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return ['created' => $created, 'skipped' => count($preview['rows']) - count($created)];
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}
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public function approve(int $id, ?int $actorId): array
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{
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$cf = FinanceBalanceCarryforward::query()->findOrFail($id);
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$cf->fill(['status' => 'approved', 'approved_by' => $actorId, 'approved_at' => now()])->save();
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return $cf->fresh()->toArray();
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}
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public function waive(int $id, float $amount, ?string $reason, ?int $actorId): array
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{
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$cf = FinanceBalanceCarryforward::query()->findOrFail($id);
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$waived = min((float) $cf->remaining_amount, $amount);
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$cf->waived_amount = (float) $cf->waived_amount + $waived;
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$cf->remaining_amount = max(0, (float) $cf->remaining_amount - $waived);
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$cf->status = $cf->remaining_amount <= 0 ? 'waived' : $cf->status;
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$cf->reason = $reason ?: $cf->reason;
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$cf->approved_by = $cf->approved_by ?: $actorId;
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$cf->save();
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return $cf->fresh()->toArray();
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}
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public function adjust(int $id, float $amount, ?string $reason): array
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{
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$cf = FinanceBalanceCarryforward::query()->findOrFail($id);
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$cf->adjusted_amount = $amount;
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$cf->remaining_amount = max(0, (float) $cf->carryforward_amount - (float) $cf->waived_amount + $amount);
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$cf->reason = $reason ?: $cf->reason;
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$cf->save();
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return $cf->fresh()->toArray();
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}
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public function postToNewYear(int $id, ?int $actorId): array
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{
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return DB::transaction(function () use ($id, $actorId) {
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$cf = FinanceBalanceCarryforward::query()->lockForUpdate()->findOrFail($id);
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if (!in_array($cf->status, ['approved','draft','pending_review'], true)) {
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return $cf->toArray() + ['warning' => 'Carryforward is not in a postable status.'];
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}
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$amount = max(0, (float) $cf->carryforward_amount - (float) $cf->waived_amount + (float) $cf->adjusted_amount);
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$invoiceId = null;
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if (Schema::hasTable('invoices')) {
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$invoiceId = DB::table('invoices')->insertGetId([
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'parent_id' => $cf->parent_id,
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'invoice_number' => 'CF-' . $cf->to_school_year . '-' . $cf->id,
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'total_amount' => $amount,
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'balance' => $amount,
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'paid_amount' => 0,
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'school_year' => $cf->to_school_year,
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'issue_date' => now()->toDateString(),
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'status' => $amount > 0 ? 'unpaid' : 'paid',
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'description' => 'Previous year balance from ' . $cf->from_school_year,
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'created_at' => now(),
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'updated_at' => now(),
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'updated_by' => $actorId,
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]);
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}
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$cf->posted_invoice_id = $invoiceId;
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$cf->status = 'posted_to_new_year';
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$cf->remaining_amount = $amount;
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$cf->save();
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return $cf->fresh()->toArray();
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});
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}
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public function report(array $filters): array
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{
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$q = FinanceBalanceCarryforward::query();
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foreach (['from_school_year','to_school_year','parent_id','status'] as $field) {
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if (!empty($filters[$field])) $q->where($field, $filters[$field]);
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}
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return ['generatedAt' => now()->toISOString(), 'rows' => $q->orderByDesc('remaining_amount')->get()->toArray()];
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}
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public function csvRows(array $report): array
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{
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$rows = [['ID','Parent ID','From Year','To Year','Source Invoices','Source Balance','Carryforward','Waived','Adjusted','Remaining','Status','Posted Invoice']];
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foreach ($report['rows'] as $r) {
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$rows[] = [$r['id'],$r['parent_id'],$r['from_school_year'],$r['to_school_year'],json_encode($r['source_invoice_ids_json'] ?? []),$r['source_balance_amount'],$r['carryforward_amount'],$r['waived_amount'],$r['adjusted_amount'],$r['remaining_amount'],$r['status'],$r['posted_invoice_id'] ?? null];
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}
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return $rows;
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}
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private function paymentTotals(string $schoolYear): array
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{
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if (!Schema::hasTable('payments')) return [];
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return DB::table('payments')->where('school_year', $schoolYear)->whereNotIn('status', ['void','voided','failed','cancelled','canceled','reversed'])->select('invoice_id', DB::raw('COALESCE(SUM(paid_amount),0) total'))->groupBy('invoice_id')->pluck('total','invoice_id')->map(fn($v)=>(float)$v)->all();
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}
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private function discountTotals(): array
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{
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if (!Schema::hasTable('discount_usages')) return [];
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$col = Schema::hasColumn('discount_usages','discount_amount') ? 'discount_amount' : 'amount';
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return DB::table('discount_usages')->select('invoice_id', DB::raw('COALESCE(SUM('.$col.'),0) total'))->groupBy('invoice_id')->pluck('total','invoice_id')->map(fn($v)=>(float)$v)->all();
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}
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private function refundTotals(): array
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{
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if (!Schema::hasTable('refunds')) return [];
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$col = Schema::hasColumn('refunds','refund_amount') ? 'refund_amount' : (Schema::hasColumn('refunds','amount') ? 'amount' : null);
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if (!$col) return [];
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return DB::table('refunds')->whereNotIn('status', ['void','voided','cancelled','canceled'])->select('invoice_id', DB::raw('COALESCE(SUM('.$col.'),0) total'))->groupBy('invoice_id')->pluck('total','invoice_id')->map(fn($v)=>(float)$v)->all();
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}
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}
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