Feat (change float32 to float64, implement get summary)

api/transaction/handler_test.go

@@ -54,7 +54,7 @@ func TestHandler_GetAll(t *testing.T) {
 	expected := []Transaction{
 		{
 			ID:        1,
-			Amount:    float32(2000.0),
+			Amount:    2000.0,
 			Date:      nil,
 			Category:  "food",
 			ImageUrl:  "http://img.png",

api/transaction/middlewareService.go

@@ -23,15 +23,14 @@ func (m middlewareService) SetFilter(queryParams map[string][]string) Filter {
 
 		switch key {
 		case "date":
-			loc := time.Now().Location()
-			parseDate, err := time.ParseInLocation("2006-01-02", value, loc)
+			parseDate, err := time.ParseInLocation("2006-01-02", value, time.Now().Location())
 			if err == nil {
 				filter.Date = &parseDate
 			}
 		case "amount":
 			amount, err := strconv.ParseFloat(value, 32)
 			if err == nil {
-				filter.Amount = float32(amount)
+				filter.Amount = amount
 			}
 		case "category":
 			filter.Category = value

api/transaction/middlewareService_test.go

@@ -37,7 +37,7 @@ func TestSetFilter(t *testing.T) {
 				"amount": {amount},
 			},
 			expected: Filter{
-				Amount: float32(expectedAmount),
+				Amount: expectedAmount,
 			},
 		}, {
 			test: "category is set in query params",
@@ -66,7 +66,7 @@ func TestSetFilter(t *testing.T) {
 			},
 			expected: Filter{
 				Date:     &expectedDate,
-				Amount:   float32(expectedAmount),
+				Amount:   expectedAmount,
 				Category: expectedCategory,
 			},
 		},

api/transaction/repository.go

@@ -33,6 +33,7 @@ func (r repository) GetAll(filter Filter, paginate Pagination) ([]Transaction, e
 		conditions = append(conditions, fmt.Sprintf("date = $%d", len(args)+1))
 		args = append(args, filter.Date)
 	}
+
 	if filter.Amount != 0 {
 		conditions = append(conditions, fmt.Sprintf("amount = $%d", len(args)+1))
 		args = append(args, filter.Amount)

api/transaction/repository_test.go

@@ -71,7 +71,7 @@ func TestGetAll_ShouldReturnData_WhenCorrectInput(t *testing.T) {
 	mockDate := time.Date(2020, time.April,
 		11, 21, 34, 01, 0, time.UTC)
 
-	mockAmount := float32(10.0)
+	mockAmount := 10.0
 	mockCategory := "mock category"
 
 	mockFilter := Filter{

api/transaction/service.go

@@ -44,7 +44,33 @@ func (s service) DeleteExpense(id int) error {
 }
 
 func (s service) GetSummary(spenderId int, txnType string) (SummaryResponse, error) {
-	return SummaryResponse{}, nil
+	summaries, err := s.repository.GetSummary(spenderId, []string{txnType})
+
+	if err != nil {
+		return SummaryResponse{}, err
+	}
+
+	if len(summaries) == 0 {
+		return SummaryResponse{}, err
+	}
+
+	var totalAmount float64
+	spendDaysMap := make(map[string]int)
+
+	for _, v := range summaries {
+		totalAmount += v.Amount
+
+		dateKey := v.Date.Format("2016-02-01")
+		spendDaysMap[dateKey] = spendDaysMap[dateKey] + 1
+	}
+
+	spendDays := len(spendDaysMap)
+
+	return SummaryResponse{
+		TotalAmount:     totalAmount,
+		AvgAmountPerDay: totalAmount / float64(spendDays),
+		Total:           len(summaries),
+	}, nil
 }
 
 func (s service) GetExpenses(spenderId int) ([]Transaction, error) {

api/transaction/service_test.go

@@ -43,7 +43,7 @@ func TestService_GetAll_ShouldReturnError_WhenRepositoryReturnsError(t *testing.
 	service := NewService(mockRepo)
 
 	mockDate := time.Date(2020, time.April, 11, 21, 34, 01, 0, time.UTC)
-	mockAmount := float32(200.2)
+	mockAmount := 200.2
 	mockCategory := "category1"
 
 	mockFilter := Filter{
@@ -76,7 +76,7 @@ func TestService_GetAll_ShouldReturnData_WhenRepositoryReturnsData(t *testing.T)
 	service := NewService(mockRepo)
 
 	mockDate := time.Date(2020, time.April, 11, 21, 34, 01, 0, time.UTC)
-	mockAmount := float32(200.2)
+	mockAmount := 200.2
 	mockCategory := "category1"
 
 	mockFilter := Filter{
@@ -118,6 +118,6 @@ func TestService_PassCoverage(t *testing.T) {
 	_ = service.DeleteExpense(0)
 
 	assert.Equal(t, createRes, CreateTransactionResponse{})
-	assert.Equal(t, sumRes, SummaryResponse{})
+	assert.Equal(t, SummaryResponse{}, sumRes)
 	assert.Equal(t, balRes, BalanceResponse{})
 }

api/transaction/transaction.go

@@ -4,7 +4,7 @@ import "time"
 
 type Filter struct {
 	Date     *time.Time `json:"date"`
-	Amount   float32    `json:"amount"`
+	Amount   float64    `json:"amount"`
 	Category string     `json:"category"`
 }
 
@@ -16,7 +16,7 @@ type Pagination struct {
 type Transaction struct {
 	ID        int        `json:"id"`
 	Date      *time.Time `json:"date"`
-	Amount    float32    `json:"amount"`
+	Amount    float64    `json:"amount"`
 	Category  string     `json:"category"`
 	ImageUrl  string     `json:"image_url"`
 	Note      string     `json:"note"`
@@ -25,7 +25,7 @@ type Transaction struct {
 
 type CreateTransactionRequest struct {
 	Date      *time.Time `json:"date"`
-	Amount    float32    `json:"amount"`
+	Amount    float64    `json:"amount"`
 	Category  string     `json:"category"`
 	ImageUrl  string     `json:"image_url"`
 	Note      string     `json:"note"`
@@ -38,21 +38,21 @@ type CreateTransactionResponse struct {
 }
 
 type SummaryResponse struct {
-	TotalAmountSpend     float32 `json:"total_amount_spend"`
-	AvgAmountSpendPerDay float32 `json:"average_amount_spend_per_day"`
-	Total                int     `json:"total"`
+	TotalAmount     float64 `json:"total_amount"`
+	AvgAmountPerDay float64 `json:"avg_amount_per_day"`
+	Total           int     `json:"total"`
 }
 
 type BalanceResponse struct {
-	TotalAmountEarned float32 `json:"total_amount_earned"`
-	TotalAmountSpend  float32 `json:"total_amount_spend"`
-	TotalAmountSaved  float32 `json:"total_amount_saved"`
+	TotalAmountEarned float64 `json:"total_amount_earned"`
+	TotalAmountSpend  float64 `json:"total_amount_spend"`
+	TotalAmountSaved  float64 `json:"total_amount_saved"`
 }
 
 type GetTransactionResponse struct {
 	ID        int        `json:"id"`
 	Date      *time.Time `json:"date"`
-	Amount    float32    `json:"amount"`
+	Amount    float64    `json:"amount"`
 	Category  string     `json:"category"`
 	ImageUrl  string     `json:"image_url"`
 	Note      string     `json:"note"`