feat: 보고서(Reports) API 구현

- 일일 일보 조회/엑셀 다운로드 API 추가
- 지출 예상 내역서 조회/엑셀 다운로드 API 추가
- ReportService: 전일/당일 잔액 계산, 월별 지출 예상 집계
- Laravel Excel을 이용한 엑셀 내보내기 구현
- Swagger 문서 작성 완료

app/Exports/DailyReportExport.php

@@ -0,0 +1,95 @@
+<?php
+
+namespace App\Exports;
+
+use Maatwebsite\Excel\Concerns\FromArray;
+use Maatwebsite\Excel\Concerns\ShouldAutoSize;
+use Maatwebsite\Excel\Concerns\WithHeadings;
+use Maatwebsite\Excel\Concerns\WithStyles;
+use Maatwebsite\Excel\Concerns\WithTitle;
+use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
+
+class DailyReportExport implements FromArray, ShouldAutoSize, WithHeadings, WithStyles, WithTitle
+{
+    public function __construct(
+        private readonly array $report
+    ) {}
+
+    /**
+     * 시트 제목
+     */
+    public function title(): string
+    {
+        return '일일일보';
+    }
+
+    /**
+     * 헤더 정의
+     */
+    public function headings(): array
+    {
+        return [
+            ['일일 일보 - '.$this->report['date']],
+            [],
+            ['전일 잔액', number_format($this->report['previous_balance']).'원'],
+            ['당일 입금액', number_format($this->report['daily_deposit']).'원'],
+            ['당일 출금액', number_format($this->report['daily_withdrawal']).'원'],
+            ['당일 잔액', number_format($this->report['current_balance']).'원'],
+            [],
+            ['구분', '거래처명', '계정과목', '입금액', '출금액', '적요'],
+        ];
+    }
+
+    /**
+     * 데이터 배열
+     */
+    public function array(): array
+    {
+        $rows = [];
+
+        foreach ($this->report['details'] as $detail) {
+            $rows[] = [
+                $detail['type_label'],
+                $detail['client_name'],
+                $detail['account_code'],
+                $detail['deposit_amount'] > 0 ? number_format($detail['deposit_amount']) : '',
+                $detail['withdrawal_amount'] > 0 ? number_format($detail['withdrawal_amount']) : '',
+                $detail['description'],
+            ];
+        }
+
+        // 합계 행 추가
+        $rows[] = [];
+        $rows[] = [
+            '합계',
+            '',
+            '',
+            number_format($this->report['daily_deposit']),
+            number_format($this->report['daily_withdrawal']),
+            '',
+        ];
+
+        return $rows;
+    }
+
+    /**
+     * 스타일 정의
+     */
+    public function styles(Worksheet $sheet): array
+    {
+        return [
+            1 => ['font' => ['bold' => true, 'size' => 14]],
+            3 => ['font' => ['bold' => true]],
+            4 => ['font' => ['bold' => true]],
+            5 => ['font' => ['bold' => true]],
+            6 => ['font' => ['bold' => true]],
+            8 => [
+                'font' => ['bold' => true],
+                'fill' => [
+                    'fillType' => \PhpOffice\PhpSpreadsheet\Style\Fill::FILL_SOLID,
+                    'startColor' => ['rgb' => 'E0E0E0'],
+                ],
+            ],
+        ];
+    }
+}

app/Exports/ExpenseEstimateExport.php

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+<?php
+
+namespace App\Exports;
+
+use Maatwebsite\Excel\Concerns\FromArray;
+use Maatwebsite\Excel\Concerns\ShouldAutoSize;
+use Maatwebsite\Excel\Concerns\WithHeadings;
+use Maatwebsite\Excel\Concerns\WithStyles;
+use Maatwebsite\Excel\Concerns\WithTitle;
+use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
+
+class ExpenseEstimateExport implements FromArray, ShouldAutoSize, WithHeadings, WithStyles, WithTitle
+{
+    public function __construct(
+        private readonly array $report
+    ) {}
+
+    /**
+     * 시트 제목
+     */
+    public function title(): string
+    {
+        return '지출예상내역서';
+    }
+
+    /**
+     * 헤더 정의
+     */
+    public function headings(): array
+    {
+        return [
+            ['지출 예상 내역서 - '.$this->report['year_month']],
+            [],
+            ['예상 지출 합계', number_format($this->report['total_estimate']).'원'],
+            ['계좌 잔액', number_format($this->report['account_balance']).'원'],
+            ['예상 잔액', number_format($this->report['expected_balance']).'원'],
+            [],
+            ['예상 지급일', '품목', '지출금액', '거래처', '계좌'],
+        ];
+    }
+
+    /**
+     * 데이터 배열
+     */
+    public function array(): array
+    {
+        $rows = [];
+
+        foreach ($this->report['items'] as $item) {
+            $rows[] = [
+                $item['expected_date'],
+                $item['item_name'],
+                number_format($item['amount']),
+                $item['client_name'],
+                $item['account_name'],
+            ];
+        }
+
+        // 빈 줄 추가
+        $rows[] = [];
+
+        // 월별 합계
+        $rows[] = ['[월별 합계]', '', '', '', ''];
+
+        foreach ($this->report['monthly_summary']['by_month'] as $month) {
+            $rows[] = [
+                $month['month'].' 계',
+                '',
+                number_format($month['total']),
+                '',
+                '',
+            ];
+        }
+
+        // 최종 합계
+        $rows[] = [];
+        $rows[] = [
+            '지출 합계',
+            '',
+            number_format($this->report['monthly_summary']['total_expense']),
+            '',
+            '',
+        ];
+        $rows[] = [
+            '계좌 잔액',
+            '',
+            number_format($this->report['monthly_summary']['account_balance']),
+            '',
+            '',
+        ];
+        $rows[] = [
+            '최종 차액',
+            '',
+            number_format($this->report['monthly_summary']['final_difference']),
+            '',
+            '',
+        ];
+
+        return $rows;
+    }
+
+    /**
+     * 스타일 정의
+     */
+    public function styles(Worksheet $sheet): array
+    {
+        return [
+            1 => ['font' => ['bold' => true, 'size' => 14]],
+            3 => ['font' => ['bold' => true]],
+            4 => ['font' => ['bold' => true]],
+            5 => ['font' => ['bold' => true]],
+            7 => [
+                'font' => ['bold' => true],
+                'fill' => [
+                    'fillType' => \PhpOffice\PhpSpreadsheet\Style\Fill::FILL_SOLID,
+                    'startColor' => ['rgb' => 'E0E0E0'],
+                ],
+            ],
+        ];
+    }
+}

app/Http/Controllers/Api/V1/ReportController.php

@@ -0,0 +1,61 @@
+<?php
+
+namespace App\Http\Controllers\Api\V1;
+
+use App\Exports\DailyReportExport;
+use App\Exports\ExpenseEstimateExport;
+use App\Http\Controllers\Controller;
+use App\Http\Requests\V1\Report\DailyReportRequest;
+use App\Http\Requests\V1\Report\ExpenseEstimateRequest;
+use App\Http\Responses\ApiResponse;
+use App\Services\ReportService;
+use Maatwebsite\Excel\Facades\Excel;
+
+class ReportController extends Controller
+{
+    public function __construct(
+        private readonly ReportService $service
+    ) {}
+
+    /**
+     * 일일 일보 조회
+     */
+    public function daily(DailyReportRequest $request)
+    {
+        $report = $this->service->dailyReport($request->validated());
+
+        return ApiResponse::handle(__('message.fetched'), $report);
+    }
+
+    /**
+     * 일일 일보 엑셀 다운로드
+     */
+    public function dailyExport(DailyReportRequest $request)
+    {
+        $report = $this->service->dailyReport($request->validated());
+        $filename = 'daily_report_'.$report['date'].'.xlsx';
+
+        return Excel::download(new DailyReportExport($report), $filename);
+    }
+
+    /**
+     * 지출 예상 내역서 조회
+     */
+    public function expenseEstimate(ExpenseEstimateRequest $request)
+    {
+        $report = $this->service->expenseEstimate($request->validated());
+
+        return ApiResponse::handle(__('message.fetched'), $report);
+    }
+
+    /**
+     * 지출 예상 내역서 엑셀 다운로드
+     */
+    public function expenseEstimateExport(ExpenseEstimateRequest $request)
+    {
+        $report = $this->service->expenseEstimate($request->validated());
+        $filename = 'expense_estimate_'.$report['year_month'].'.xlsx';
+
+        return Excel::download(new ExpenseEstimateExport($report), $filename);
+    }
+}

app/Http/Requests/V1/Report/DailyReportRequest.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace App\Http\Requests\V1\Report;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class DailyReportRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     */
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     */
+    public function rules(): array
+    {
+        return [
+            'date' => ['nullable', 'date', 'date_format:Y-m-d'],
+        ];
+    }
+
+    /**
+     * Custom attribute names
+     */
+    public function attributes(): array
+    {
+        return [
+            'date' => __('validation.attributes.date'),
+        ];
+    }
+}

app/Http/Requests/V1/Report/ExpenseEstimateRequest.php

@@ -0,0 +1,46 @@
+<?php
+
+namespace App\Http\Requests\V1\Report;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class ExpenseEstimateRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     */
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     */
+    public function rules(): array
+    {
+        return [
+            'year_month' => ['nullable', 'regex:/^\d{4}-\d{2}$/'],
+        ];
+    }
+
+    /**
+     * Custom attribute names
+     */
+    public function attributes(): array
+    {
+        return [
+            'year_month' => __('validation.attributes.year_month'),
+        ];
+    }
+
+    /**
+     * Custom validation messages
+     */
+    public function messages(): array
+    {
+        return [
+            'year_month.regex' => __('validation.date_format', ['format' => 'YYYY-MM']),
+        ];
+    }
+}

app/Services/ReportService.php

@@ -0,0 +1,222 @@
+<?php
+
+namespace App\Services;
+
+use App\Models\Tenants\Deposit;
+use App\Models\Tenants\Purchase;
+use App\Models\Tenants\Withdrawal;
+use Carbon\Carbon;
+
+class ReportService extends Service
+{
+    /**
+     * 일일 일보 조회
+     *
+     * @param  array  $params  [date: 기준일]
+     */
+    public function dailyReport(array $params): array
+    {
+        $tenantId = $this->tenantId();
+        $date = Carbon::parse($params['date'] ?? now()->toDateString());
+        $previousDate = $date->copy()->subDay();
+
+        // 전일 잔액 계산 (기준일 전일까지의 모든 입출금 합계)
+        $previousBalance = $this->calculateBalanceUntilDate($tenantId, $previousDate);
+
+        // 당일 입금 합계
+        $dailyDeposit = Deposit::query()
+            ->where('tenant_id', $tenantId)
+            ->whereDate('deposit_date', $date)
+            ->sum('amount');
+
+        // 당일 출금 합계
+        $dailyWithdrawal = Withdrawal::query()
+            ->where('tenant_id', $tenantId)
+            ->whereDate('withdrawal_date', $date)
+            ->sum('amount');
+
+        // 당일 잔액
+        $currentBalance = $previousBalance + $dailyDeposit - $dailyWithdrawal;
+
+        // 상세 내역 (입출금 통합)
+        $details = $this->getDailyDetails($tenantId, $date);
+
+        return [
+            'date' => $date->toDateString(),
+            'previous_balance' => (float) $previousBalance,
+            'daily_deposit' => (float) $dailyDeposit,
+            'daily_withdrawal' => (float) $dailyWithdrawal,
+            'current_balance' => (float) $currentBalance,
+            'details' => $details,
+        ];
+    }
+
+    /**
+     * 지출 예상 내역서 조회
+     *
+     * @param  array  $params  [year_month: YYYY-MM 형식]
+     */
+    public function expenseEstimate(array $params): array
+    {
+        $tenantId = $this->tenantId();
+        $yearMonth = $params['year_month'] ?? now()->format('Y-m');
+        [$year, $month] = explode('-', $yearMonth);
+
+        $startDate = Carbon::createFromDate($year, $month, 1)->startOfMonth();
+        $endDate = $startDate->copy()->endOfMonth();
+
+        // 미결제 매입 내역 조회 (지출 예상)
+        $items = Purchase::query()
+            ->where('tenant_id', $tenantId)
+            ->whereIn('status', ['draft', 'confirmed'])
+            ->whereNull('withdrawal_id')
+            ->whereBetween('purchase_date', [$startDate, $endDate])
+            ->with(['client:id,name'])
+            ->orderBy('purchase_date')
+            ->get()
+            ->map(function ($purchase) {
+                return [
+                    'id' => $purchase->id,
+                    'expected_date' => $purchase->purchase_date->toDateString(),
+                    'item_name' => $purchase->description ?? __('message.report.purchase'),
+                    'amount' => (float) $purchase->total_amount,
+                    'client_name' => $purchase->client?->name ?? '',
+                    'account_name' => '',
+                ];
+            });
+
+        // 예상 지출 합계
+        $totalEstimate = $items->sum('amount');
+
+        // 계좌 잔액 (대표 계좌 기준, 없으면 모든 계좌 합산)
+        $accountBalance = $this->getAccountBalance($tenantId);
+
+        // 예상 잔액
+        $expectedBalance = $accountBalance - $totalEstimate;
+
+        // 월별 합계
+        $monthlySummary = $this->getMonthlySummary($tenantId, $startDate);
+
+        return [
+            'year_month' => $yearMonth,
+            'total_estimate' => (float) $totalEstimate,
+            'account_balance' => (float) $accountBalance,
+            'expected_balance' => (float) $expectedBalance,
+            'items' => $items->values()->toArray(),
+            'monthly_summary' => $monthlySummary,
+        ];
+    }
+
+    /**
+     * 특정 날짜까지의 잔액 계산
+     */
+    private function calculateBalanceUntilDate(int $tenantId, Carbon $date): float
+    {
+        $totalDeposits = Deposit::query()
+            ->where('tenant_id', $tenantId)
+            ->whereDate('deposit_date', '<=', $date)
+            ->sum('amount');
+
+        $totalWithdrawals = Withdrawal::query()
+            ->where('tenant_id', $tenantId)
+            ->whereDate('withdrawal_date', '<=', $date)
+            ->sum('amount');
+
+        return (float) ($totalDeposits - $totalWithdrawals);
+    }
+
+    /**
+     * 일일 상세 내역 조회 (입출금 통합)
+     */
+    private function getDailyDetails(int $tenantId, Carbon $date): array
+    {
+        // 입금 내역
+        $deposits = Deposit::query()
+            ->where('tenant_id', $tenantId)
+            ->whereDate('deposit_date', $date)
+            ->with(['client:id,name'])
+            ->get()
+            ->map(function ($deposit) {
+                return [
+                    'type' => 'deposit',
+                    'type_label' => __('message.report.deposit'),
+                    'client_name' => $deposit->client?->name ?? $deposit->client_name ?? '',
+                    'account_code' => $deposit->account_code ?? '',
+                    'deposit_amount' => (float) $deposit->amount,
+                    'withdrawal_amount' => 0,
+                    'description' => $deposit->description ?? '',
+                    'payment_method' => $deposit->payment_method,
+                ];
+            });
+
+        // 출금 내역
+        $withdrawals = Withdrawal::query()
+            ->where('tenant_id', $tenantId)
+            ->whereDate('withdrawal_date', $date)
+            ->with(['client:id,name'])
+            ->get()
+            ->map(function ($withdrawal) {
+                return [
+                    'type' => 'withdrawal',
+                    'type_label' => __('message.report.withdrawal'),
+                    'client_name' => $withdrawal->client?->name ?? $withdrawal->client_name ?? '',
+                    'account_code' => $withdrawal->account_code ?? '',
+                    'deposit_amount' => 0,
+                    'withdrawal_amount' => (float) $withdrawal->amount,
+                    'description' => $withdrawal->description ?? '',
+                    'payment_method' => $withdrawal->payment_method,
+                ];
+            });
+
+        return $deposits->concat($withdrawals)->values()->toArray();
+    }
+
+    /**
+     * 계좌 잔액 조회
+     * 입출금 내역 기반으로 계산
+     */
+    private function getAccountBalance(int $tenantId): float
+    {
+        return $this->calculateBalanceUntilDate($tenantId, Carbon::now());
+    }
+
+    /**
+     * 월별 지출 예상 합계
+     */
+    private function getMonthlySummary(int $tenantId, Carbon $baseDate): array
+    {
+        $summary = [];
+
+        // 기준월부터 3개월간 집계
+        for ($i = 0; $i < 3; $i++) {
+            $targetDate = $baseDate->copy()->addMonths($i);
+            $startOfMonth = $targetDate->copy()->startOfMonth();
+            $endOfMonth = $targetDate->copy()->endOfMonth();
+
+            $total = Purchase::query()
+                ->where('tenant_id', $tenantId)
+                ->whereIn('status', ['draft', 'confirmed'])
+                ->whereNull('withdrawal_id')
+                ->whereBetween('purchase_date', [$startOfMonth, $endOfMonth])
+                ->sum('total_amount');
+
+            $summary[] = [
+                'month' => $targetDate->format('Y/m'),
+                'total' => (float) $total,
+            ];
+        }
+
+        // 전체 합계
+        $grandTotal = collect($summary)->sum('total');
+
+        // 계좌 잔액
+        $accountBalance = $this->getAccountBalance($tenantId);
+
+        return [
+            'by_month' => $summary,
+            'total_expense' => $grandTotal,
+            'account_balance' => $accountBalance,
+            'final_difference' => $accountBalance - $grandTotal,
+        ];
+    }
+}

app/Swagger/v1/ReportApi.php

@@ -0,0 +1,212 @@
+<?php
+
+namespace App\Swagger\v1;
+
+/**
+ * @OA\Tag(name="Reports", description="보고서 관리")
+ *
+ * @OA\Schema(
+ *     schema="DailyReport",
+ *     type="object",
+ *     description="일일 일보",
+ *
+ *     @OA\Property(property="date", type="string", format="date", example="2025-01-15", description="기준일"),
+ *     @OA\Property(property="previous_balance", type="number", format="float", example=10000000, description="전일 잔액"),
+ *     @OA\Property(property="daily_deposit", type="number", format="float", example=5000000, description="당일 입금액"),
+ *     @OA\Property(property="daily_withdrawal", type="number", format="float", example=3000000, description="당일 출금액"),
+ *     @OA\Property(property="current_balance", type="number", format="float", example=12000000, description="당일 잔액"),
+ *     @OA\Property(property="details", type="array", description="상세 내역",
+ *
+ *         @OA\Items(
+ *             type="object",
+ *
+ *             @OA\Property(property="type", type="string", enum={"deposit","withdrawal"}, description="유형"),
+ *             @OA\Property(property="type_label", type="string", example="입금", description="유형 라벨"),
+ *             @OA\Property(property="client_name", type="string", example="(주)테스트", description="거래처명"),
+ *             @OA\Property(property="account_code", type="string", example="401", description="계정과목"),
+ *             @OA\Property(property="deposit_amount", type="number", format="float", example=1000000, description="입금액"),
+ *             @OA\Property(property="withdrawal_amount", type="number", format="float", example=0, description="출금액"),
+ *             @OA\Property(property="description", type="string", example="1월 매출 입금", description="적요"),
+ *             @OA\Property(property="payment_method", type="string", example="transfer", description="결제수단")
+ *         )
+ *     )
+ * )
+ *
+ * @OA\Schema(
+ *     schema="ExpenseEstimate",
+ *     type="object",
+ *     description="지출 예상 내역서",
+ *
+ *     @OA\Property(property="year_month", type="string", example="2025-01", description="기준 연월"),
+ *     @OA\Property(property="total_estimate", type="number", format="float", example=15000000, description="예상 지출 합계"),
+ *     @OA\Property(property="account_balance", type="number", format="float", example=20000000, description="계좌 잔액"),
+ *     @OA\Property(property="expected_balance", type="number", format="float", example=5000000, description="예상 잔액"),
+ *     @OA\Property(property="items", type="array", description="지출 예상 내역",
+ *
+ *         @OA\Items(
+ *             type="object",
+ *
+ *             @OA\Property(property="id", type="integer", example=1, description="매입 ID"),
+ *             @OA\Property(property="expected_date", type="string", format="date", example="2025-01-20", description="예상 지급일"),
+ *             @OA\Property(property="item_name", type="string", example="원자재 구매", description="품목"),
+ *             @OA\Property(property="amount", type="number", format="float", example=5000000, description="지출금액"),
+ *             @OA\Property(property="client_name", type="string", example="(주)공급사", description="거래처"),
+ *             @OA\Property(property="account_name", type="string", example="법인통장", description="계좌")
+ *         )
+ *     ),
+ *     @OA\Property(property="monthly_summary", type="object", description="월별 합계",
+ *         @OA\Property(property="by_month", type="array",
+ *
+ *             @OA\Items(
+ *                 type="object",
+ *
+ *                 @OA\Property(property="month", type="string", example="2025/01", description="월"),
+ *                 @OA\Property(property="total", type="number", format="float", example=5000000, description="합계")
+ *             )
+ *         ),
+ *         @OA\Property(property="total_expense", type="number", format="float", example=15000000, description="지출 합계"),
+ *         @OA\Property(property="account_balance", type="number", format="float", example=20000000, description="계좌 잔액"),
+ *         @OA\Property(property="final_difference", type="number", format="float", example=5000000, description="최종 차액")
+ *     )
+ * )
+ */
+class ReportApi
+{
+    /**
+     * @OA\Get(
+     *     path="/api/v1/reports/daily",
+     *     tags={"Reports"},
+     *     summary="일일 일보 조회",
+     *     description="매일 전일의 입출금 및 매출 매입 현황을 자동 집계합니다.",
+     *     security={{"BearerAuth": {}}, {"ApiKeyAuth": {}}},
+     *
+     *     @OA\Parameter(
+     *         name="date",
+     *         in="query",
+     *         description="기준일 (YYYY-MM-DD, 기본값: 오늘)",
+     *         required=false,
+     *
+     *         @OA\Schema(type="string", format="date", example="2025-01-15")
+     *     ),
+     *
+     *     @OA\Response(
+     *         response=200,
+     *         description="성공",
+     *
+     *         @OA\JsonContent(
+     *
+     *             @OA\Property(property="success", type="boolean", example=true),
+     *             @OA\Property(property="message", type="string", example="데이터를 조회했습니다."),
+     *             @OA\Property(property="data", ref="#/components/schemas/DailyReport")
+     *         )
+     *     ),
+     *
+     *     @OA\Response(response=401, description="인증 실패", @OA\JsonContent(ref="#/components/schemas/ErrorResponse")),
+     *     @OA\Response(response=422, description="유효성 검사 실패", @OA\JsonContent(ref="#/components/schemas/ErrorResponse"))
+     * )
+     */
+    public function daily() {}
+
+    /**
+     * @OA\Get(
+     *     path="/api/v1/reports/daily/export",
+     *     tags={"Reports"},
+     *     summary="일일 일보 엑셀 다운로드",
+     *     description="일일 일보를 엑셀 파일로 다운로드합니다.",
+     *     security={{"BearerAuth": {}}, {"ApiKeyAuth": {}}},
+     *
+     *     @OA\Parameter(
+     *         name="date",
+     *         in="query",
+     *         description="기준일 (YYYY-MM-DD, 기본값: 오늘)",
+     *         required=false,
+     *
+     *         @OA\Schema(type="string", format="date", example="2025-01-15")
+     *     ),
+     *
+     *     @OA\Response(
+     *         response=200,
+     *         description="엑셀 파일",
+     *
+     *         @OA\MediaType(
+     *             mediaType="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
+     *
+     *             @OA\Schema(type="string", format="binary")
+     *         )
+     *     ),
+     *
+     *     @OA\Response(response=401, description="인증 실패", @OA\JsonContent(ref="#/components/schemas/ErrorResponse")),
+     *     @OA\Response(response=422, description="유효성 검사 실패", @OA\JsonContent(ref="#/components/schemas/ErrorResponse"))
+     * )
+     */
+    public function dailyExport() {}
+
+    /**
+     * @OA\Get(
+     *     path="/api/v1/reports/expense-estimate",
+     *     tags={"Reports"},
+     *     summary="지출 예상 내역서 조회",
+     *     description="예상 지출 금액 및 일정을 조회합니다.",
+     *     security={{"BearerAuth": {}}, {"ApiKeyAuth": {}}},
+     *
+     *     @OA\Parameter(
+     *         name="year_month",
+     *         in="query",
+     *         description="기준 연월 (YYYY-MM, 기본값: 이번달)",
+     *         required=false,
+     *
+     *         @OA\Schema(type="string", example="2025-01")
+     *     ),
+     *
+     *     @OA\Response(
+     *         response=200,
+     *         description="성공",
+     *
+     *         @OA\JsonContent(
+     *
+     *             @OA\Property(property="success", type="boolean", example=true),
+     *             @OA\Property(property="message", type="string", example="데이터를 조회했습니다."),
+     *             @OA\Property(property="data", ref="#/components/schemas/ExpenseEstimate")
+     *         )
+     *     ),
+     *
+     *     @OA\Response(response=401, description="인증 실패", @OA\JsonContent(ref="#/components/schemas/ErrorResponse")),
+     *     @OA\Response(response=422, description="유효성 검사 실패", @OA\JsonContent(ref="#/components/schemas/ErrorResponse"))
+     * )
+     */
+    public function expenseEstimate() {}
+
+    /**
+     * @OA\Get(
+     *     path="/api/v1/reports/expense-estimate/export",
+     *     tags={"Reports"},
+     *     summary="지출 예상 내역서 엑셀 다운로드",
+     *     description="지출 예상 내역서를 엑셀 파일로 다운로드합니다.",
+     *     security={{"BearerAuth": {}}, {"ApiKeyAuth": {}}},
+     *
+     *     @OA\Parameter(
+     *         name="year_month",
+     *         in="query",
+     *         description="기준 연월 (YYYY-MM, 기본값: 이번달)",
+     *         required=false,
+     *
+     *         @OA\Schema(type="string", example="2025-01")
+     *     ),
+     *
+     *     @OA\Response(
+     *         response=200,
+     *         description="엑셀 파일",
+     *
+     *         @OA\MediaType(
+     *             mediaType="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
+     *
+     *             @OA\Schema(type="string", format="binary")
+     *         )
+     *     ),
+     *
+     *     @OA\Response(response=401, description="인증 실패", @OA\JsonContent(ref="#/components/schemas/ErrorResponse")),
+     *     @OA\Response(response=422, description="유효성 검사 실패", @OA\JsonContent(ref="#/components/schemas/ErrorResponse"))
+     * )
+     */
+    public function expenseEstimateExport() {}
+}

lang/ko/message.php

@@ -238,4 +238,15 @@
         'deleted' => '현장이 삭제되었습니다.',
         'active_fetched' => '활성화된 현장 목록을 조회했습니다.',
     ],
+
+    // 보고서 관리
+    'report' => [
+        'fetched' => '보고서를 조회했습니다.',
+        'daily_fetched' => '일일 일보를 조회했습니다.',
+        'expense_estimate_fetched' => '지출 예상 내역서를 조회했습니다.',
+        'exported' => '보고서가 다운로드되었습니다.',
+        'deposit' => '입금',
+        'withdrawal' => '출금',
+        'purchase' => '매입',
+    ],
 ];

routes/api.php

@@ -51,20 +51,21 @@
 use App\Http\Controllers\Api\V1\QuoteController;
 use App\Http\Controllers\Api\V1\RefreshController;
 use App\Http\Controllers\Api\V1\RegisterController;
+use App\Http\Controllers\Api\V1\ReportController;
 use App\Http\Controllers\Api\V1\RoleController;
 use App\Http\Controllers\Api\V1\RolePermissionController;
 use App\Http\Controllers\Api\V1\SaleController;
 use App\Http\Controllers\Api\V1\SiteController;
 use App\Http\Controllers\Api\V1\TenantController;
 use App\Http\Controllers\Api\V1\TenantFieldSettingController;
-use App\Http\Controllers\Api\V1\TenantOptionGroupController;
 // 설계 전용 (디자인 네임스페이스)
+use App\Http\Controllers\Api\V1\TenantOptionGroupController;
 use App\Http\Controllers\Api\V1\TenantOptionValueController;
 use App\Http\Controllers\Api\V1\TenantStatFieldController;
 use App\Http\Controllers\Api\V1\TenantUserProfileController;
 use App\Http\Controllers\Api\V1\UserController;
-use App\Http\Controllers\Api\V1\UserRoleController;
 // 모델셋 관리 (견적 시스템)
+use App\Http\Controllers\Api\V1\UserRoleController;
 use App\Http\Controllers\Api\V1\WithdrawalController;
 use App\Http\Controllers\Api\V1\WorkSettingController;
 use Illuminate\Support\Facades\Route;
@@ -340,6 +341,14 @@
             Route::post('/{id}/confirm', [PurchaseController::class, 'confirm'])->whereNumber('id')->name('v1.purchases.confirm');
         });
 
+        // Report API (보고서)
+        Route::prefix('reports')->group(function () {
+            Route::get('/daily', [ReportController::class, 'daily'])->name('v1.reports.daily');
+            Route::get('/daily/export', [ReportController::class, 'dailyExport'])->name('v1.reports.daily.export');
+            Route::get('/expense-estimate', [ReportController::class, 'expenseEstimate'])->name('v1.reports.expense-estimate');
+            Route::get('/expense-estimate/export', [ReportController::class, 'expenseEstimateExport'])->name('v1.reports.expense-estimate.export');
+        });
+
         // Permission API
         Route::prefix('permissions')->group(function () {
             Route::get('departments/{dept_id}/menu-matrix', [PermissionController::class, 'deptMenuMatrix'])->name('v1.permissions.deptMenuMatrix'); // 부서별 권한 메트릭스