feat(customer): order history and detail for the customer app

Adds GET /customer/orders and GET /customer/orders/:id for the customer
app: the orders linked to the logged-in customer across their
organization's outlets, newest first, paginated (limit 1-100, default 20).

The list shows the order number, outlet, type, status, total, item count,
void/refund flags and the EnakPoint and EnakCoin it earned. The detail adds
the amounts, the items with product and variant names, weight and unit
for weighed lines, modifiers and notes, and the payments with the method
and, for EnakPoint, the points used. Costs, cashier and other internal
fields are left out. Another customer's order answers 404 like one that
does not exist.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/app/app.go

@@ -166,6 +166,7 @@ func (a *App) Initialize(cfg *config.Config) error {
 		services.customerWalletService,
 		services.customerDeviceService,
 		services.customerOutletService,
+		services.customerOrderService,
 		a.redisClient,
 	)
 
@@ -405,6 +406,7 @@ type processors struct {
 	walletTraceProcessor                *processor.WalletTraceProcessor
 	customerDeviceProcessor             *processor.CustomerDeviceProcessor
 	customerOutletProcessor             *processor.CustomerOutletProcessor
+	customerOrderProcessor              *processor.CustomerOrderProcessor
 }
 
 func (a *App) initProcessors(cfg *config.Config, repos *repositories) *processors {
@@ -487,6 +489,7 @@ func (a *App) initProcessors(cfg *config.Config, repos *repositories) *processor
 		walletTraceProcessor:                processor.NewWalletTraceProcessor(repository.NewWalletTraceRepository(a.db)),
 		customerDeviceProcessor:             customerDeviceProcessor,
 		customerOutletProcessor:             processor.NewCustomerOutletProcessor(repository.NewCustomerOutletRepository(a.db), loyaltySettingsProcessor),
+		customerOrderProcessor:              processor.NewCustomerOrderProcessor(repository.NewCustomerOrderRepository(a.db), earningProcessor),
 		walletAdminProcessor:                processor.NewWalletAdminProcessor(repository.NewWalletAdminRepository(a.db), repos.walletQueryRepo, processor.NewWalletProcessor(repos.walletRepo), loyaltySettingsProcessor, repos.txManager),
 	}
 }
@@ -538,6 +541,7 @@ type services struct {
 	customerWalletService             *service.CustomerWalletServiceImpl
 	customerDeviceService             *service.CustomerDeviceServiceImpl
 	customerOutletService             *service.CustomerOutletServiceImpl
+	customerOrderService              *service.CustomerOrderServiceImpl
 }
 
 func (a *App) initServices(processors *processors, repos *repositories, cfg *config.Config) *services {
@@ -627,6 +631,7 @@ func (a *App) initServices(processors *processors, repos *repositories, cfg *con
 		customerWalletService:             service.NewCustomerWalletService(processors.walletExchangeProcessor, processors.walletTransferProcessor),
 		customerDeviceService:             service.NewCustomerDeviceService(processors.customerDeviceProcessor),
 		customerOutletService:             service.NewCustomerOutletService(processors.customerOutletProcessor),
+		customerOrderService:              service.NewCustomerOrderService(processors.customerOrderProcessor),
 	}
 }
 

internal/handler/customer_order_handler.go

@@ -0,0 +1,49 @@
+package handler
+
+import (
+	"github.com/gin-gonic/gin"
+
+	"apskel-pos-be/internal/constants"
+	"apskel-pos-be/internal/contract"
+	"apskel-pos-be/internal/models"
+	"apskel-pos-be/internal/service"
+	"apskel-pos-be/internal/util"
+)
+
+// CustomerOrderHandler serves the customer app's order history.
+type CustomerOrderHandler struct {
+	orders service.CustomerOrderService
+}
+
+func NewCustomerOrderHandler(orders service.CustomerOrderService) *CustomerOrderHandler {
+	return &CustomerOrderHandler{orders: orders}
+}
+
+// List is GET /customer/orders?page=&limit=.
+func (h *CustomerOrderHandler) List(c *gin.Context) {
+	customerID, ok := customerIDFromGin(c, "CustomerOrderHandler::List")
+	if !ok {
+		return
+	}
+	var query models.ListCustomerOrdersQuery
+	if err := c.ShouldBindQuery(&query); err != nil {
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{
+			contract.NewResponseError(constants.MalformedFieldErrorCode, constants.RequestEntity, "page and limit must be whole numbers"),
+		}), "CustomerOrderHandler::List")
+		return
+	}
+	util.HandleResponse(c.Writer, c.Request, h.orders.List(c.Request.Context(), customerID, query), "CustomerOrderHandler::List")
+}
+
+// Detail is GET /customer/orders/:id.
+func (h *CustomerOrderHandler) Detail(c *gin.Context) {
+	customerID, ok := customerIDFromGin(c, "CustomerOrderHandler::Detail")
+	if !ok {
+		return
+	}
+	orderID, ok := parseUUIDParam(c, "id", "CustomerOrderHandler::Detail")
+	if !ok {
+		return
+	}
+	util.HandleResponse(c.Writer, c.Request, h.orders.Detail(c.Request.Context(), customerID, orderID), "CustomerOrderHandler::Detail")
+}

internal/models/customer_order.go

@@ -0,0 +1,74 @@
+package models
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+)
+
+// CustomerOrderSummary is one order in GET /customer/orders.
+type CustomerOrderSummary struct {
+	ID            uuid.UUID `json:"id"`
+	OrderNumber   string    `json:"order_number"`
+	OutletID      uuid.UUID `json:"outlet_id"`
+	OutletName    string    `json:"outlet_name"`
+	OrderType     string    `json:"order_type"`
+	Status        string    `json:"status"`
+	PaymentStatus string    `json:"payment_status"`
+	TotalAmount   float64   `json:"total_amount"`
+	ItemCount     int64     `json:"item_count"`
+	IsVoid        bool      `json:"is_void"`
+	IsRefund      bool      `json:"is_refund"`
+	// EnakPoint and EnakCoin the order earned; 0 when it earned nothing.
+	PointsEarned int64     `json:"points_earned"`
+	CoinsEarned  int64     `json:"coins_earned"`
+	CreatedAt    time.Time `json:"created_at"`
+}
+
+// CustomerOrderDetail is GET /customer/orders/:id.
+type CustomerOrderDetail struct {
+	CustomerOrderSummary
+	TableNumber    *string                `json:"table_number"`
+	Subtotal       float64                `json:"subtotal"`
+	DiscountAmount float64                `json:"discount_amount"`
+	TaxAmount      float64                `json:"tax_amount"`
+	RefundAmount   float64                `json:"refund_amount"`
+	Items          []CustomerOrderItem    `json:"items"`
+	Payments       []CustomerOrderPayment `json:"payments"`
+}
+
+type CustomerOrderItem struct {
+	ID          uuid.UUID `json:"id"`
+	ProductID   uuid.UUID `json:"product_id"`
+	ProductName string    `json:"product_name"`
+	VariantName *string   `json:"variant_name"`
+	Quantity    int       `json:"quantity"`
+	// Set for products sold by weight, in UnitName.
+	Weight         *float64                 `json:"weight,omitempty"`
+	UnitName       *string                  `json:"unit_name,omitempty"`
+	UnitPrice      float64                  `json:"unit_price"`
+	TotalPrice     float64                  `json:"total_price"`
+	RefundQuantity int                      `json:"refund_quantity"`
+	Modifiers      []map[string]interface{} `json:"modifiers"`
+	Notes          *string                  `json:"notes,omitempty"`
+	Status         string                   `json:"status"`
+}
+
+type CustomerOrderPayment struct {
+	ID           uuid.UUID `json:"id"`
+	MethodName   string    `json:"method_name"`
+	MethodType   string    `json:"method_type"`
+	Amount       float64   `json:"amount"`
+	Status       string    `json:"status"`
+	RefundAmount float64   `json:"refund_amount"`
+	// Set for a payment with EnakPoint.
+	PointsUsed *int64    `json:"points_used,omitempty"`
+	PointValue *float64  `json:"point_value,omitempty"`
+	CreatedAt  time.Time `json:"created_at"`
+}
+
+// ListCustomerOrdersQuery is GET /customer/orders.
+type ListCustomerOrdersQuery struct {
+	Page  int `form:"page"`
+	Limit int `form:"limit"`
+}

internal/processor/customer_order_processor.go

@@ -0,0 +1,157 @@
+package processor
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/google/uuid"
+
+	"apskel-pos-be/internal/models"
+	"apskel-pos-be/internal/repository"
+)
+
+const (
+	customerOrdersPageLimit = 20
+	customerOrdersMaxLimit  = 100
+)
+
+type orderEarnedReader interface {
+	EarnedByOrders(ctx context.Context, orderIDs []uuid.UUID) (map[uuid.UUID]OrderEarned, error)
+}
+
+// CustomerOrderProcessor serves the customer app's order history: the customer's own
+// orders only, without costs or staff details.
+type CustomerOrderProcessor struct {
+	repo   repository.CustomerOrderRepository
+	earned orderEarnedReader
+}
+
+func NewCustomerOrderProcessor(repo repository.CustomerOrderRepository, earned orderEarnedReader) *CustomerOrderProcessor {
+	return &CustomerOrderProcessor{repo: repo, earned: earned}
+}
+
+// List is GET /customer/orders: the customer's orders across all outlets, newest first.
+func (p *CustomerOrderProcessor) List(ctx context.Context, customerID uuid.UUID, query models.ListCustomerOrdersQuery) (*models.PaginatedResponse[models.CustomerOrderSummary], error) {
+	page, limit := query.Page, query.Limit
+	if page == 0 {
+		page = 1
+	}
+	if limit == 0 {
+		limit = customerOrdersPageLimit
+	}
+	if page < 1 || limit < 1 || limit > customerOrdersMaxLimit {
+		return nil, fmt.Errorf("%w: page must be at least 1 and limit between 1 and %d", ErrInvalidWalletQuery, customerOrdersMaxLimit)
+	}
+
+	rows, total, err := p.repo.ListOrders(ctx, customerID, (page-1)*limit, limit)
+	if err != nil {
+		return nil, err
+	}
+	ids := make([]uuid.UUID, 0, len(rows))
+	for _, r := range rows {
+		ids = append(ids, r.ID)
+	}
+	earned, err := p.earned.EarnedByOrders(ctx, ids)
+	if err != nil {
+		return nil, err
+	}
+	data := make([]models.CustomerOrderSummary, 0, len(rows))
+	for _, r := range rows {
+		data = append(data, customerOrderSummary(r, earned[r.ID]))
+	}
+	return &models.PaginatedResponse[models.CustomerOrderSummary]{
+		Data: data,
+		Pagination: models.Pagination{
+			Page:       page,
+			Limit:      limit,
+			Total:      total,
+			TotalPages: int((total + int64(limit) - 1) / int64(limit)),
+		},
+	}, nil
+}
+
+// Detail is GET /customer/orders/:id. Another customer's order is
+// repository.ErrCustomerOrderNotFound, like one that does not exist.
+func (p *CustomerOrderProcessor) Detail(ctx context.Context, customerID, orderID uuid.UUID) (*models.CustomerOrderDetail, error) {
+	row, err := p.repo.GetOrder(ctx, customerID, orderID)
+	if err != nil {
+		return nil, err
+	}
+	items, err := p.repo.ListItems(ctx, orderID)
+	if err != nil {
+		return nil, err
+	}
+	payments, err := p.repo.ListPayments(ctx, orderID)
+	if err != nil {
+		return nil, err
+	}
+	earned, err := p.earned.EarnedByOrders(ctx, []uuid.UUID{orderID})
+	if err != nil {
+		return nil, err
+	}
+
+	detail := &models.CustomerOrderDetail{
+		CustomerOrderSummary: customerOrderSummary(*row, earned[orderID]),
+		TableNumber:          row.TableNumber,
+		Subtotal:             row.Subtotal,
+		DiscountAmount:       row.DiscountAmount,
+		TaxAmount:            row.TaxAmount,
+		RefundAmount:         row.RefundAmount,
+		Items:                make([]models.CustomerOrderItem, 0, len(items)),
+		Payments:             make([]models.CustomerOrderPayment, 0, len(payments)),
+	}
+	for _, it := range items {
+		modifiers := []map[string]interface{}(it.Modifiers)
+		if modifiers == nil {
+			modifiers = []map[string]interface{}{}
+		}
+		detail.Items = append(detail.Items, models.CustomerOrderItem{
+			ID:             it.ID,
+			ProductID:      it.ProductID,
+			ProductName:    it.ProductName,
+			VariantName:    it.VariantName,
+			Quantity:       it.Quantity,
+			Weight:         it.Weight,
+			UnitName:       it.UnitName,
+			UnitPrice:      it.UnitPrice,
+			TotalPrice:     it.TotalPrice,
+			RefundQuantity: it.RefundQuantity,
+			Modifiers:      modifiers,
+			Notes:          it.Notes,
+			Status:         it.Status,
+		})
+	}
+	for _, pay := range payments {
+		detail.Payments = append(detail.Payments, models.CustomerOrderPayment{
+			ID:           pay.ID,
+			MethodName:   pay.MethodName,
+			MethodType:   pay.MethodType,
+			Amount:       pay.Amount,
+			Status:       pay.Status,
+			RefundAmount: pay.RefundAmount,
+			PointsUsed:   pay.PointsUsed,
+			PointValue:   pay.PointValue,
+			CreatedAt:    pay.CreatedAt,
+		})
+	}
+	return detail, nil
+}
+
+func customerOrderSummary(r repository.CustomerOrderRow, earned OrderEarned) models.CustomerOrderSummary {
+	return models.CustomerOrderSummary{
+		ID:            r.ID,
+		OrderNumber:   r.OrderNumber,
+		OutletID:      r.OutletID,
+		OutletName:    r.OutletName,
+		OrderType:     r.OrderType,
+		Status:        r.Status,
+		PaymentStatus: r.PaymentStatus,
+		TotalAmount:   r.TotalAmount,
+		ItemCount:     r.ItemCount,
+		IsVoid:        r.IsVoid,
+		IsRefund:      r.IsRefund,
+		PointsEarned:  earned.Points,
+		CoinsEarned:   earned.Coins,
+		CreatedAt:     r.CreatedAt,
+	}
+}

internal/processor/customer_order_processor_test.go

@@ -0,0 +1,145 @@
+package processor
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	"apskel-pos-be/internal/models"
+	"apskel-pos-be/internal/repository"
+)
+
+type customerOrderRepoFake struct {
+	owner    map[uuid.UUID]uuid.UUID // order -> customer
+	orders   []repository.CustomerOrderRow
+	items    map[uuid.UUID][]repository.CustomerOrderItemRow
+	payments map[uuid.UUID][]repository.CustomerOrderPaymentRow
+	offset   int
+	limit    int
+}
+
+func (f *customerOrderRepoFake) ListOrders(_ context.Context, customerID uuid.UUID, offset, limit int) ([]repository.CustomerOrderRow, int64, error) {
+	f.offset, f.limit = offset, limit
+	var mine []repository.CustomerOrderRow
+	for _, o := range f.orders {
+		if f.owner[o.ID] == customerID {
+			mine = append(mine, o)
+		}
+	}
+	return mine, int64(len(mine)), nil
+}
+
+func (f *customerOrderRepoFake) GetOrder(_ context.Context, customerID, orderID uuid.UUID) (*repository.CustomerOrderRow, error) {
+	for _, o := range f.orders {
+		if o.ID == orderID && f.owner[o.ID] == customerID {
+			c := o
+			return &c, nil
+		}
+	}
+	return nil, repository.ErrCustomerOrderNotFound
+}
+
+func (f *customerOrderRepoFake) ListItems(_ context.Context, orderID uuid.UUID) ([]repository.CustomerOrderItemRow, error) {
+	return f.items[orderID], nil
+}
+
+func (f *customerOrderRepoFake) ListPayments(_ context.Context, orderID uuid.UUID) ([]repository.CustomerOrderPaymentRow, error) {
+	return f.payments[orderID], nil
+}
+
+type earnedFake map[uuid.UUID]OrderEarned
+
+func (f earnedFake) EarnedByOrders(_ context.Context, ids []uuid.UUID) (map[uuid.UUID]OrderEarned, error) {
+	out := map[uuid.UUID]OrderEarned{}
+	for _, id := range ids {
+		if e, ok := f[id]; ok {
+			out[id] = e
+		}
+	}
+	return out, nil
+}
+
+func newCustomerOrderTest() (*customerOrderRepoFake, uuid.UUID, uuid.UUID, uuid.UUID) {
+	customer, other := uuid.New(), uuid.New()
+	mine, theirs := uuid.New(), uuid.New()
+	repo := &customerOrderRepoFake{
+		owner: map[uuid.UUID]uuid.UUID{mine: customer, theirs: other},
+		orders: []repository.CustomerOrderRow{
+			{ID: mine, OrderNumber: "ORD-1", OutletName: "Gokuna 1", Status: "completed", PaymentStatus: "completed", Subtotal: 90000, TotalAmount: 99000, ItemCount: 2, CreatedAt: time.Now()},
+			{ID: theirs, OrderNumber: "ORD-2"},
+		},
+	}
+	return repo, customer, mine, theirs
+}
+
+func TestCustomerOrders_ListShowsOnlyTheCustomersOrdersWithEarning(t *testing.T) {
+	repo, customer, mine, _ := newCustomerOrderTest()
+	p := NewCustomerOrderProcessor(repo, earnedFake{mine: {Points: 900, Coins: 3}})
+
+	got, err := p.List(context.Background(), customer, models.ListCustomerOrdersQuery{Page: 2, Limit: 10})
+	require.NoError(t, err)
+	require.Len(t, got.Data, 1)
+	assert.Equal(t, "ORD-1", got.Data[0].OrderNumber)
+	assert.Equal(t, int64(900), got.Data[0].PointsEarned)
+	assert.Equal(t, int64(3), got.Data[0].CoinsEarned)
+	assert.Equal(t, 10, repo.offset, "page 2 of 10 skips the first 10")
+	assert.Equal(t, 10, repo.limit)
+	assert.Equal(t, 2, got.Pagination.Page)
+}
+
+func TestCustomerOrders_ListDefaultsAndLimits(t *testing.T) {
+	repo, customer, _, _ := newCustomerOrderTest()
+	p := NewCustomerOrderProcessor(repo, earnedFake{})
+
+	got, err := p.List(context.Background(), customer, models.ListCustomerOrdersQuery{})
+	require.NoError(t, err)
+	assert.Equal(t, 1, got.Pagination.Page)
+	assert.Equal(t, 20, got.Pagination.Limit)
+
+	for _, q := range []models.ListCustomerOrdersQuery{{Page: -1}, {Limit: 101}, {Limit: -5}} {
+		_, err := p.List(context.Background(), customer, q)
+		assert.ErrorIs(t, err, ErrInvalidWalletQuery, "%+v", q)
+	}
+}
+
+func TestCustomerOrders_DetailHasItemsPaymentsAndEarning(t *testing.T) {
+	repo, customer, mine, _ := newCustomerOrderTest()
+	variant, unit := "Large", "ons"
+	weight := 4.2
+	points, value := int64(12500), 1.0
+	repo.items = map[uuid.UUID][]repository.CustomerOrderItemRow{
+		mine: {
+			{ProductName: "Kopi Susu", VariantName: &variant, Quantity: 2, UnitPrice: 25000, TotalPrice: 50000, Status: "completed"},
+			{ProductName: "Ikan Tude", Quantity: 1, Weight: &weight, UnitName: &unit, UnitPrice: 4500, TotalPrice: 18900, Status: "completed"},
+		},
+	}
+	repo.payments = map[uuid.UUID][]repository.CustomerOrderPaymentRow{
+		mine: {
+			{MethodName: "EnakPoint", MethodType: "point", Amount: 12500, Status: "completed", PointsUsed: &points, PointValue: &value},
+			{MethodName: "Cash", MethodType: "cash", Amount: 86500, Status: "completed"},
+		},
+	}
+	p := NewCustomerOrderProcessor(repo, earnedFake{mine: {Points: 865}})
+
+	got, err := p.Detail(context.Background(), customer, mine)
+	require.NoError(t, err)
+	assert.Equal(t, "Gokuna 1", got.OutletName)
+	assert.Equal(t, float64(90000), got.Subtotal)
+	assert.Equal(t, int64(865), got.PointsEarned)
+	require.Len(t, got.Items, 2)
+	assert.Equal(t, "Large", *got.Items[0].VariantName)
+	assert.Equal(t, []map[string]interface{}{}, got.Items[0].Modifiers, "no modifiers is an empty list, not null")
+	assert.Equal(t, 4.2, *got.Items[1].Weight)
+	require.Len(t, got.Payments, 2)
+	assert.Equal(t, int64(12500), *got.Payments[0].PointsUsed)
+}
+
+func TestCustomerOrders_AnotherCustomersOrderIsNotFound(t *testing.T) {
+	repo, customer, _, theirs := newCustomerOrderTest()
+	_, err := NewCustomerOrderProcessor(repo, earnedFake{}).Detail(context.Background(), customer, theirs)
+	assert.ErrorIs(t, err, repository.ErrCustomerOrderNotFound)
+}

internal/repository/customer_order_repository.go

@@ -0,0 +1,157 @@
+package repository
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"time"
+
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+
+	"apskel-pos-be/internal/entities"
+)
+
+// ErrCustomerOrderNotFound means the order does not exist or belongs to another
+// customer; the two are not told apart.
+var ErrCustomerOrderNotFound = errors.New("order not found")
+
+// CustomerOrderRow is one order as the customer app lists it.
+type CustomerOrderRow struct {
+	ID             uuid.UUID
+	OrderNumber    string
+	OutletID       uuid.UUID
+	OutletName     string
+	OrderType      string
+	TableNumber    *string
+	Status         string
+	PaymentStatus  string
+	Subtotal       float64
+	DiscountAmount float64
+	TaxAmount      float64
+	TotalAmount    float64
+	RefundAmount   float64
+	IsVoid         bool
+	IsRefund       bool
+	ItemCount      int64
+	CreatedAt      time.Time
+}
+
+// CustomerOrderItemRow is one line of an order, without costs.
+type CustomerOrderItemRow struct {
+	ID             uuid.UUID
+	ProductID      uuid.UUID
+	ProductName    string
+	VariantName    *string
+	Quantity       int
+	Weight         *float64
+	UnitName       *string
+	UnitPrice      float64
+	TotalPrice     float64
+	RefundQuantity int
+	Modifiers      entities.Modifiers `gorm:"type:jsonb"`
+	Notes          *string
+	Status         string
+}
+
+// CustomerOrderPaymentRow is one payment of an order.
+type CustomerOrderPaymentRow struct {
+	ID           uuid.UUID
+	MethodName   string
+	MethodType   string
+	Amount       float64
+	Status       string
+	RefundAmount float64
+	PointsUsed   *int64
+	PointValue   *float64
+	CreatedAt    time.Time
+}
+
+// CustomerOrderRepository reads a customer's own orders for the customer app. Every
+// read is scoped to the customer, so one customer can never see another's order.
+type CustomerOrderRepository interface {
+	// ListOrders returns a page of the customer's orders, newest first, and the total.
+	ListOrders(ctx context.Context, customerID uuid.UUID, offset, limit int) ([]CustomerOrderRow, int64, error)
+	// GetOrder returns ErrCustomerOrderNotFound unless the order is the customer's.
+	GetOrder(ctx context.Context, customerID, orderID uuid.UUID) (*CustomerOrderRow, error)
+	ListItems(ctx context.Context, orderID uuid.UUID) ([]CustomerOrderItemRow, error)
+	ListPayments(ctx context.Context, orderID uuid.UUID) ([]CustomerOrderPaymentRow, error)
+}
+
+type customerOrderRepository struct {
+	db *gorm.DB
+}
+
+func NewCustomerOrderRepository(db *gorm.DB) CustomerOrderRepository {
+	return &customerOrderRepository{db: db}
+}
+
+const customerOrderColumns = `o.id, o.order_number, o.outlet_id, COALESCE(ol.name, '') AS outlet_name,
+	o.order_type, o.table_number, o.status, o.payment_status, o.subtotal, o.discount_amount,
+	o.tax_amount, o.total_amount, o.refund_amount, o.is_void, o.is_refund,
+	(SELECT COUNT(*) FROM order_items oi WHERE oi.order_id = o.id) AS item_count, o.created_at`
+
+func (r *customerOrderRepository) ListOrders(ctx context.Context, customerID uuid.UUID, offset, limit int) ([]CustomerOrderRow, int64, error) {
+	db := DBFromContext(ctx, r.db).WithContext(ctx)
+	var total int64
+	if err := db.Table("orders").Where("customer_id = ?", customerID).Count(&total).Error; err != nil {
+		return nil, 0, fmt.Errorf("failed to count customer orders: %w", err)
+	}
+	var rows []CustomerOrderRow
+	err := db.Raw(`SELECT `+customerOrderColumns+`
+		FROM orders o LEFT JOIN outlets ol ON ol.id = o.outlet_id
+		WHERE o.customer_id = ?
+		ORDER BY o.created_at DESC, o.id
+		LIMIT ? OFFSET ?`, customerID, limit, offset).Scan(&rows).Error
+	if err != nil {
+		return nil, 0, fmt.Errorf("failed to list customer orders: %w", err)
+	}
+	return rows, total, nil
+}
+
+func (r *customerOrderRepository) GetOrder(ctx context.Context, customerID, orderID uuid.UUID) (*CustomerOrderRow, error) {
+	var rows []CustomerOrderRow
+	err := DBFromContext(ctx, r.db).WithContext(ctx).Raw(`SELECT `+customerOrderColumns+`
+		FROM orders o LEFT JOIN outlets ol ON ol.id = o.outlet_id
+		WHERE o.id = ? AND o.customer_id = ?`, orderID, customerID).Scan(&rows).Error
+	if err != nil {
+		return nil, fmt.Errorf("failed to get customer order: %w", err)
+	}
+	if len(rows) == 0 {
+		return nil, ErrCustomerOrderNotFound
+	}
+	return &rows[0], nil
+}
+
+func (r *customerOrderRepository) ListItems(ctx context.Context, orderID uuid.UUID) ([]CustomerOrderItemRow, error) {
+	var rows []CustomerOrderItemRow
+	err := DBFromContext(ctx, r.db).WithContext(ctx).Raw(`
+		SELECT oi.id, oi.product_id, COALESCE(p.name, '') AS product_name, pv.name AS variant_name,
+			oi.quantity, oi.weight, COALESCE(u.abbreviation, u.name) AS unit_name,
+			oi.unit_price, oi.total_price, oi.refund_quantity, oi.modifiers, oi.notes, oi.status
+		FROM order_items oi
+		LEFT JOIN products p ON p.id = oi.product_id
+		LEFT JOIN product_variants pv ON pv.id = oi.product_variant_id
+		LEFT JOIN units u ON u.id = oi.unit_id
+		WHERE oi.order_id = ?
+		ORDER BY oi.created_at, oi.id`, orderID).Scan(&rows).Error
+	if err != nil {
+		return nil, fmt.Errorf("failed to list order items: %w", err)
+	}
+	return rows, nil
+}
+
+func (r *customerOrderRepository) ListPayments(ctx context.Context, orderID uuid.UUID) ([]CustomerOrderPaymentRow, error) {
+	var rows []CustomerOrderPaymentRow
+	err := DBFromContext(ctx, r.db).WithContext(ctx).Raw(`
+		SELECT pay.id, COALESCE(pm.name, '') AS method_name, COALESCE(pm.type, '') AS method_type,
+			pay.amount, pay.status, pay.refund_amount, pay.points_used, pay.point_value, pay.created_at
+		FROM payments pay
+		LEFT JOIN payment_methods pm ON pm.id = pay.payment_method_id
+		WHERE pay.order_id = ?
+		ORDER BY pay.created_at, pay.id`, orderID).Scan(&rows).Error
+	if err != nil {
+		return nil, fmt.Errorf("failed to list order payments: %w", err)
+	}
+	return rows, nil
+}

internal/router/router.go

@@ -62,12 +62,13 @@ type Router struct {
 	customerWalletHandler             *handler.CustomerWalletHandler
 	customerDeviceHandler             *handler.CustomerDeviceHandler
 	customerOutletHandler             *handler.CustomerOutletHandler
+	customerOrderHandler              *handler.CustomerOrderHandler
 	authMiddleware                   *middleware.AuthMiddleware
 	customerAuthMiddleware            *middleware.CustomerAuthMiddleware
 	redisClient                       *redis.Client
 }
 
-func NewRouter(cfg *config.Config, healthHandler *handler.HealthHandler, authService service.AuthService, authMiddleware *middleware.AuthMiddleware, userService *service.UserServiceImpl, userValidator *validator.UserValidatorImpl, organizationService service.OrganizationService, organizationValidator validator.OrganizationValidator, outletService service.OutletService, outletValidator validator.OutletValidator, outletSettingService service.OutletSettingService, categoryService service.CategoryService, categoryValidator validator.CategoryValidator, productService service.ProductService, productValidator validator.ProductValidator, productVariantService service.ProductVariantService, productVariantValidator validator.ProductVariantValidator, inventoryService service.InventoryService, inventoryValidator validator.InventoryValidator, orderService service.OrderService, orderValidator validator.OrderValidator, fileService service.FileService, fileValidator validator.FileValidator, customerService service.CustomerService, customerValidator validator.CustomerValidator, paymentMethodService service.PaymentMethodService, paymentMethodValidator validator.PaymentMethodValidator, analyticsService *service.AnalyticsServiceImpl, reportService service.ReportService, tableService *service.TableServiceImpl, tableValidator *validator.TableValidator, unitService handler.UnitService, ingredientService handler.IngredientService, productRecipeService service.ProductRecipeService, vendorService service.VendorService, vendorValidator validator.VendorValidator, purchaseOrderService service.PurchaseOrderService, purchaseOrderValidator validator.PurchaseOrderValidator, purchaseCategoryService service.PurchaseCategoryService, purchaseCategoryValidator validator.PurchaseCategoryValidator, unitConverterService service.IngredientUnitConverterService, unitConverterValidator validator.IngredientUnitConverterValidator, chartOfAccountTypeService service.ChartOfAccountTypeService, chartOfAccountTypeValidator validator.ChartOfAccountTypeValidator, chartOfAccountService service.ChartOfAccountService, chartOfAccountValidator validator.ChartOfAccountValidator, accountService service.AccountService, accountValidator validator.AccountValidator, orderIngredientTransactionService service.OrderIngredientTransactionService, orderIngredientTransactionValidator validator.OrderIngredientTransactionValidator, gamificationService service.GamificationService, gamificationValidator validator.GamificationValidator, rewardService service.RewardService, rewardValidator validator.RewardValidator, campaignService service.CampaignService, campaignValidator validator.CampaignValidator, customerAuthService service.CustomerAuthService, customerAuthValidator validator.CustomerAuthValidator, customerPointsService service.CustomerPointsService, spinGameService service.SpinGameService, customerAuthMiddleware *middleware.CustomerAuthMiddleware, userDeviceService service.UserDeviceService, userDeviceValidator validator.UserDeviceValidator, notificationService service.NotificationService, notificationValidator validator.NotificationValidator, productOutletPriceService service.ProductOutletPriceService, productOutletPriceValidator validator.ProductOutletPriceValidator, selfOrderHandler *handler.SelfOrderHandler, expenseService *service.ExpenseServiceImpl, expenseValidator *validator.ExpenseValidatorImpl, cashAdvanceService service.CashAdvanceService, cashAdvanceValidator validator.CashAdvanceValidator, walletAdminService service.WalletAdminService, walletValidator validator.WalletValidator, loyaltySettingsService service.LoyaltySettingsService, customerPinService service.CustomerPinService, pointPaymentService service.PointPaymentService, customerOrderPaymentService service.CustomerOrderPaymentService, customerWalletService service.CustomerWalletService, customerDeviceService service.CustomerDeviceService, customerOutletService service.CustomerOutletService, redisClient *redis.Client) *Router {
+func NewRouter(cfg *config.Config, healthHandler *handler.HealthHandler, authService service.AuthService, authMiddleware *middleware.AuthMiddleware, userService *service.UserServiceImpl, userValidator *validator.UserValidatorImpl, organizationService service.OrganizationService, organizationValidator validator.OrganizationValidator, outletService service.OutletService, outletValidator validator.OutletValidator, outletSettingService service.OutletSettingService, categoryService service.CategoryService, categoryValidator validator.CategoryValidator, productService service.ProductService, productValidator validator.ProductValidator, productVariantService service.ProductVariantService, productVariantValidator validator.ProductVariantValidator, inventoryService service.InventoryService, inventoryValidator validator.InventoryValidator, orderService service.OrderService, orderValidator validator.OrderValidator, fileService service.FileService, fileValidator validator.FileValidator, customerService service.CustomerService, customerValidator validator.CustomerValidator, paymentMethodService service.PaymentMethodService, paymentMethodValidator validator.PaymentMethodValidator, analyticsService *service.AnalyticsServiceImpl, reportService service.ReportService, tableService *service.TableServiceImpl, tableValidator *validator.TableValidator, unitService handler.UnitService, ingredientService handler.IngredientService, productRecipeService service.ProductRecipeService, vendorService service.VendorService, vendorValidator validator.VendorValidator, purchaseOrderService service.PurchaseOrderService, purchaseOrderValidator validator.PurchaseOrderValidator, purchaseCategoryService service.PurchaseCategoryService, purchaseCategoryValidator validator.PurchaseCategoryValidator, unitConverterService service.IngredientUnitConverterService, unitConverterValidator validator.IngredientUnitConverterValidator, chartOfAccountTypeService service.ChartOfAccountTypeService, chartOfAccountTypeValidator validator.ChartOfAccountTypeValidator, chartOfAccountService service.ChartOfAccountService, chartOfAccountValidator validator.ChartOfAccountValidator, accountService service.AccountService, accountValidator validator.AccountValidator, orderIngredientTransactionService service.OrderIngredientTransactionService, orderIngredientTransactionValidator validator.OrderIngredientTransactionValidator, gamificationService service.GamificationService, gamificationValidator validator.GamificationValidator, rewardService service.RewardService, rewardValidator validator.RewardValidator, campaignService service.CampaignService, campaignValidator validator.CampaignValidator, customerAuthService service.CustomerAuthService, customerAuthValidator validator.CustomerAuthValidator, customerPointsService service.CustomerPointsService, spinGameService service.SpinGameService, customerAuthMiddleware *middleware.CustomerAuthMiddleware, userDeviceService service.UserDeviceService, userDeviceValidator validator.UserDeviceValidator, notificationService service.NotificationService, notificationValidator validator.NotificationValidator, productOutletPriceService service.ProductOutletPriceService, productOutletPriceValidator validator.ProductOutletPriceValidator, selfOrderHandler *handler.SelfOrderHandler, expenseService *service.ExpenseServiceImpl, expenseValidator *validator.ExpenseValidatorImpl, cashAdvanceService service.CashAdvanceService, cashAdvanceValidator validator.CashAdvanceValidator, walletAdminService service.WalletAdminService, walletValidator validator.WalletValidator, loyaltySettingsService service.LoyaltySettingsService, customerPinService service.CustomerPinService, pointPaymentService service.PointPaymentService, customerOrderPaymentService service.CustomerOrderPaymentService, customerWalletService service.CustomerWalletService, customerDeviceService service.CustomerDeviceService, customerOutletService service.CustomerOutletService, customerOrderService service.CustomerOrderService, redisClient *redis.Client) *Router {
 
 	return &Router{
 		config:                            cfg,
@@ -121,6 +122,7 @@ func NewRouter(cfg *config.Config, healthHandler *handler.HealthHandler, authSer
 		customerWalletHandler:             handler.NewCustomerWalletHandler(customerWalletService),
 		customerDeviceHandler:             handler.NewCustomerDeviceHandler(customerDeviceService),
 		customerOutletHandler:             handler.NewCustomerOutletHandler(customerOutletService),
+		customerOrderHandler:              handler.NewCustomerOrderHandler(customerOrderService),
 		redisClient:                       redisClient,
 	}
 }
@@ -182,6 +184,8 @@ func (r *Router) addAppRoutes(rg *gin.Engine) {
 			customer.PUT("/devices", r.customerDeviceHandler.Register)
 			customer.DELETE("/devices/:device_id", r.customerDeviceHandler.Unregister)
 			customer.GET("/outlets", r.customerOutletHandler.List)
+			customer.GET("/orders", r.customerOrderHandler.List)
+			customer.GET("/orders/:id", r.customerOrderHandler.Detail)
 			customer.POST("/orders/:id/pay-with-points", r.customerOrderPaymentHandler.PayWithPoints)
 			// PIN that approves moving EnakPoint and EnakCoin (docs/prd-point-coin.md F11)
 			customer.GET("/pin/status", r.customerPinHandler.Status)

internal/router/router_test.go

@@ -45,6 +45,8 @@ func TestAllRoutesRegister(t *testing.T) {
 		"PUT /api/v1/customer/devices",
 		"DELETE /api/v1/customer/devices/:device_id",
 		"GET /api/v1/customer/outlets",
+		"GET /api/v1/customer/orders",
+		"GET /api/v1/customer/orders/:id",
 		"GET /api/v1/orders/:id/point-payment/preview",
 		"POST /api/v1/customer/orders/:id/pay-with-points",
 		"GET /api/v1/customer/pin/status",

internal/service/customer_order_service.go

@@ -0,0 +1,57 @@
+package service
+
+import (
+	"context"
+	"errors"
+
+	"github.com/google/uuid"
+
+	"apskel-pos-be/internal/constants"
+	"apskel-pos-be/internal/contract"
+	"apskel-pos-be/internal/models"
+	"apskel-pos-be/internal/processor"
+	"apskel-pos-be/internal/repository"
+)
+
+// CustomerOrderService serves the customer app's order history.
+type CustomerOrderService interface {
+	List(ctx context.Context, customerID uuid.UUID, query models.ListCustomerOrdersQuery) *contract.Response
+	Detail(ctx context.Context, customerID, orderID uuid.UUID) *contract.Response
+}
+
+type CustomerOrderServiceImpl struct {
+	orders *processor.CustomerOrderProcessor
+}
+
+func NewCustomerOrderService(orders *processor.CustomerOrderProcessor) *CustomerOrderServiceImpl {
+	return &CustomerOrderServiceImpl{orders: orders}
+}
+
+func (s *CustomerOrderServiceImpl) List(ctx context.Context, customerID uuid.UUID, query models.ListCustomerOrdersQuery) *contract.Response {
+	orders, err := s.orders.List(ctx, customerID, query)
+	if err != nil {
+		return customerOrderErrorResponse(err)
+	}
+	return contract.BuildSuccessResponse(orders)
+}
+
+func (s *CustomerOrderServiceImpl) Detail(ctx context.Context, customerID, orderID uuid.UUID) *contract.Response {
+	order, err := s.orders.Detail(ctx, customerID, orderID)
+	if err != nil {
+		return customerOrderErrorResponse(err)
+	}
+	return contract.BuildSuccessResponse(order)
+}
+
+func customerOrderErrorResponse(err error) *contract.Response {
+	code := constants.InternalServerErrorCode
+	switch {
+	case errors.Is(err, repository.ErrCustomerOrderNotFound):
+		code = constants.NotFoundErrorCode
+	case errors.Is(err, processor.ErrInvalidWalletQuery):
+		code = constants.ValidationErrorCode
+	}
+	return contract.BuildErrorResponse([]*contract.ResponseError{
+		contract.NewResponseError(code, constants.RequestEntity, err.Error()),
+	})
+}