refactor access log filter

management/internals/modules/reverseproxy/accesslogs/filter.go

@@ -39,78 +39,63 @@ type AccessLogFilter struct {
 func (f *AccessLogFilter) ParseFromRequest(r *http.Request) {
 	queryParams := r.URL.Query()
 
-	f.Page = 1
-	if pageStr := queryParams.Get("page"); pageStr != "" {
-		if page, err := strconv.Atoi(pageStr); err == nil && page > 0 {
-			f.Page = page
-		}
-	}
+	f.Page = parsePositiveInt(queryParams.Get("page"), 1)
+	f.PageSize = min(parsePositiveInt(queryParams.Get("page_size"), DefaultPageSize), MaxPageSize)
 
-	f.PageSize = DefaultPageSize
-	if pageSizeStr := queryParams.Get("page_size"); pageSizeStr != "" {
-		if pageSize, err := strconv.Atoi(pageSizeStr); err == nil && pageSize > 0 {
-			f.PageSize = pageSize
-			if f.PageSize > MaxPageSize {
-				f.PageSize = MaxPageSize
-			}
-		}
-	}
+	f.Search = parseOptionalString(queryParams.Get("search"))
+	f.SourceIP = parseOptionalString(queryParams.Get("source_ip"))
+	f.Host = parseOptionalString(queryParams.Get("host"))
+	f.Path = parseOptionalString(queryParams.Get("path"))
+	f.UserID = parseOptionalString(queryParams.Get("user_id"))
+	f.UserEmail = parseOptionalString(queryParams.Get("user_email"))
+	f.UserName = parseOptionalString(queryParams.Get("user_name"))
+	f.Method = parseOptionalString(queryParams.Get("method"))
+	f.Status = parseOptionalString(queryParams.Get("status"))
+	f.StatusCode = parseOptionalInt(queryParams.Get("status_code"))
+	f.StartDate = parseOptionalRFC3339(queryParams.Get("start_date"))
+	f.EndDate = parseOptionalRFC3339(queryParams.Get("end_date"))
+}
 
-	if search := queryParams.Get("search"); search != "" {
-		f.Search = &search
+// parsePositiveInt parses a positive integer from a string, returning defaultValue if invalid
+func parsePositiveInt(s string, defaultValue int) int {
+	if s == "" {
+		return defaultValue
 	}
+	if val, err := strconv.Atoi(s); err == nil && val > 0 {
+		return val
+	}
+	return defaultValue
+}
 
-	if sourceIP := queryParams.Get("source_ip"); sourceIP != "" {
-		f.SourceIP = &sourceIP
+// parseOptionalString returns a pointer to the string if non-empty, otherwise nil
+func parseOptionalString(s string) *string {
+	if s == "" {
+		return nil
 	}
+	return &s
+}
 
-	if host := queryParams.Get("host"); host != "" {
-		f.Host = &host
+// parseOptionalInt parses an optional positive integer from a string
+func parseOptionalInt(s string) *int {
+	if s == "" {
+		return nil
 	}
+	if val, err := strconv.Atoi(s); err == nil && val > 0 {
+		v := val
+		return &v
+	}
+	return nil
+}
 
-	if path := queryParams.Get("path"); path != "" {
-		f.Path = &path
+// parseOptionalRFC3339 parses an optional RFC3339 timestamp from a string
+func parseOptionalRFC3339(s string) *time.Time {
+	if s == "" {
+		return nil
 	}
-
-	if userID := queryParams.Get("user_id"); userID != "" {
-		f.UserID = &userID
-	}
-
-	if userEmail := queryParams.Get("user_email"); userEmail != "" {
-		f.UserEmail = &userEmail
-	}
-
-	if userName := queryParams.Get("user_name"); userName != "" {
-		f.UserName = &userName
-	}
-
-	if method := queryParams.Get("method"); method != "" {
-		f.Method = &method
-	}
-
-	if status := queryParams.Get("status"); status != "" {
-		f.Status = &status
-	}
-
-	if statusCodeStr := queryParams.Get("status_code"); statusCodeStr != "" {
-		if statusCode, err := strconv.Atoi(statusCodeStr); err == nil && statusCode > 0 {
-			f.StatusCode = &statusCode
-		}
-	}
-
-	if startDate := queryParams.Get("start_date"); startDate != "" {
-		parsedStartDate, err := time.Parse(time.RFC3339, startDate)
-		if err == nil {
-			f.StartDate = &parsedStartDate
-		}
-	}
-
-	if endDate := queryParams.Get("end_date"); endDate != "" {
-		parsedEndDate, err := time.Parse(time.RFC3339, endDate)
-		if err == nil {
-			f.EndDate = &parsedEndDate
-		}
+	if t, err := time.Parse(time.RFC3339, s); err == nil {
+		return &t
 	}
+	return nil
 }
 
 // GetOffset calculates the database offset for pagination

management/internals/modules/reverseproxy/accesslogs/filter_test.go

@@ -4,8 +4,10 @@ import (
 	"net/http"
 	"net/http/httptest"
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 func TestAccessLogFilter_ParseFromRequest(t *testing.T) {
@@ -159,3 +161,211 @@ func TestAccessLogFilter_GetLimit(t *testing.T) {
 	limit := filter.GetLimit()
 	assert.Equal(t, 25, limit, "GetLimit should return PageSize")
 }
+
+func TestAccessLogFilter_ParseFromRequest_FilterParams(t *testing.T) {
+	startDate := "2024-01-15T10:30:00Z"
+	endDate := "2024-01-16T15:45:00Z"
+
+	req := httptest.NewRequest(http.MethodGet, "/test", nil)
+	q := req.URL.Query()
+	q.Set("search", "test query")
+	q.Set("source_ip", "192.168.1.1")
+	q.Set("host", "example.com")
+	q.Set("path", "/api/users")
+	q.Set("user_id", "user123")
+	q.Set("user_email", "user@example.com")
+	q.Set("user_name", "John Doe")
+	q.Set("method", "GET")
+	q.Set("status", "success")
+	q.Set("status_code", "200")
+	q.Set("start_date", startDate)
+	q.Set("end_date", endDate)
+	req.URL.RawQuery = q.Encode()
+
+	filter := &AccessLogFilter{}
+	filter.ParseFromRequest(req)
+
+	require.NotNil(t, filter.Search)
+	assert.Equal(t, "test query", *filter.Search)
+
+	require.NotNil(t, filter.SourceIP)
+	assert.Equal(t, "192.168.1.1", *filter.SourceIP)
+
+	require.NotNil(t, filter.Host)
+	assert.Equal(t, "example.com", *filter.Host)
+
+	require.NotNil(t, filter.Path)
+	assert.Equal(t, "/api/users", *filter.Path)
+
+	require.NotNil(t, filter.UserID)
+	assert.Equal(t, "user123", *filter.UserID)
+
+	require.NotNil(t, filter.UserEmail)
+	assert.Equal(t, "user@example.com", *filter.UserEmail)
+
+	require.NotNil(t, filter.UserName)
+	assert.Equal(t, "John Doe", *filter.UserName)
+
+	require.NotNil(t, filter.Method)
+	assert.Equal(t, "GET", *filter.Method)
+
+	require.NotNil(t, filter.Status)
+	assert.Equal(t, "success", *filter.Status)
+
+	require.NotNil(t, filter.StatusCode)
+	assert.Equal(t, 200, *filter.StatusCode)
+
+	require.NotNil(t, filter.StartDate)
+	expectedStart, _ := time.Parse(time.RFC3339, startDate)
+	assert.Equal(t, expectedStart, *filter.StartDate)
+
+	require.NotNil(t, filter.EndDate)
+	expectedEnd, _ := time.Parse(time.RFC3339, endDate)
+	assert.Equal(t, expectedEnd, *filter.EndDate)
+}
+
+func TestAccessLogFilter_ParseFromRequest_EmptyFilters(t *testing.T) {
+	req := httptest.NewRequest(http.MethodGet, "/test", nil)
+
+	filter := &AccessLogFilter{}
+	filter.ParseFromRequest(req)
+
+	assert.Nil(t, filter.Search)
+	assert.Nil(t, filter.SourceIP)
+	assert.Nil(t, filter.Host)
+	assert.Nil(t, filter.Path)
+	assert.Nil(t, filter.UserID)
+	assert.Nil(t, filter.UserEmail)
+	assert.Nil(t, filter.UserName)
+	assert.Nil(t, filter.Method)
+	assert.Nil(t, filter.Status)
+	assert.Nil(t, filter.StatusCode)
+	assert.Nil(t, filter.StartDate)
+	assert.Nil(t, filter.EndDate)
+}
+
+func TestAccessLogFilter_ParseFromRequest_InvalidFilters(t *testing.T) {
+	req := httptest.NewRequest(http.MethodGet, "/test", nil)
+	q := req.URL.Query()
+	q.Set("status_code", "invalid")
+	q.Set("start_date", "not-a-date")
+	q.Set("end_date", "2024-99-99")
+	req.URL.RawQuery = q.Encode()
+
+	filter := &AccessLogFilter{}
+	filter.ParseFromRequest(req)
+
+	assert.Nil(t, filter.StatusCode, "invalid status_code should be nil")
+	assert.Nil(t, filter.StartDate, "invalid start_date should be nil")
+	assert.Nil(t, filter.EndDate, "invalid end_date should be nil")
+}
+
+func TestParsePositiveInt(t *testing.T) {
+	tests := []struct {
+		name         string
+		input        string
+		defaultValue int
+		expected     int
+	}{
+		{"empty string", "", 10, 10},
+		{"valid positive int", "25", 10, 25},
+		{"zero", "0", 10, 10},
+		{"negative", "-5", 10, 10},
+		{"invalid string", "abc", 10, 10},
+		{"float", "3.14", 10, 10},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := parsePositiveInt(tt.input, tt.defaultValue)
+			assert.Equal(t, tt.expected, result)
+		})
+	}
+}
+
+func TestParseOptionalString(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    string
+		expected *string
+	}{
+		{"empty string", "", nil},
+		{"valid string", "hello", strPtr("hello")},
+		{"whitespace", "  ", strPtr("  ")},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := parseOptionalString(tt.input)
+			if tt.expected == nil {
+				assert.Nil(t, result)
+			} else {
+				require.NotNil(t, result)
+				assert.Equal(t, *tt.expected, *result)
+			}
+		})
+	}
+}
+
+func TestParseOptionalInt(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    string
+		expected *int
+	}{
+		{"empty string", "", nil},
+		{"valid positive int", "42", intPtr(42)},
+		{"zero", "0", nil},
+		{"negative", "-10", nil},
+		{"invalid string", "abc", nil},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := parseOptionalInt(tt.input)
+			if tt.expected == nil {
+				assert.Nil(t, result)
+			} else {
+				require.NotNil(t, result)
+				assert.Equal(t, *tt.expected, *result)
+			}
+		})
+	}
+}
+
+func TestParseOptionalRFC3339(t *testing.T) {
+	validDate := "2024-01-15T10:30:00Z"
+	expectedTime, _ := time.Parse(time.RFC3339, validDate)
+
+	tests := []struct {
+		name     string
+		input    string
+		expected *time.Time
+	}{
+		{"empty string", "", nil},
+		{"valid RFC3339", validDate, &expectedTime},
+		{"invalid format", "2024-01-15", nil},
+		{"invalid date", "not-a-date", nil},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := parseOptionalRFC3339(tt.input)
+			if tt.expected == nil {
+				assert.Nil(t, result)
+			} else {
+				require.NotNil(t, result)
+				assert.Equal(t, *tt.expected, *result)
+			}
+		})
+	}
+}
+
+// Helper functions for creating pointers
+func strPtr(s string) *string {
+	return &s
+}
+
+func intPtr(i int) *int {
+	return &i
+}