feat(csat): align report download csv

internal/handler/api/v1/csat_survey_handler_test.go

@@ -2,10 +2,12 @@ package v1
 
 import (
 	"bytes"
+	"encoding/csv"
 	"encoding/json"
 	"fmt"
 	"net/http"
 	"net/http/httptest"
+	"strings"
 	"testing"
 	"time"
 
@@ -168,6 +170,47 @@ func (s *CsatSurveyHandlerTestSuite) TestMetrics_ChatwootPayloadAndFilters() {
 	assert.Equal(s.T(), float64(1), ratings["5"])
 }
 
+func (s *CsatSurveyHandlerTestSuite) TestDownload_ChatwootCSVAndFilters() {
+	createdAt := time.Date(2026, 6, 5, 10, 30, 0, 0, time.UTC)
+	agent, _, contact, conversation, _ := s.seedAccountCsatResponseGraph(createdAt, 5)
+	otherContact := &model.Contact{AccountID: s.account.ID, Name: "Other Contact"}
+	s.Require().NoError(s.db.Create(otherContact).Error)
+	otherConversation := &model.Conversation{AccountID: s.account.ID, InboxID: conversation.InboxID, ContactID: otherContact.ID, Status: "resolved", ChannelType: "web_widget", Channel: "web_widget"}
+	s.Require().NoError(s.db.Create(otherConversation).Error)
+	s.Require().NoError(s.db.Create(&automation.CsatSurveyResponse{AccountID: s.account.ID, ConversationID: otherConversation.ID, ContactID: otherContact.ID, Rating: 3}).Error)
+
+	r := gin.New()
+	r.GET("/api/v1/accounts/:account_id/csat_survey_responses/download", s.handler.Download)
+	since := int64(0)
+	until := int64(32503680000)
+	url := fmt.Sprintf("/api/v1/accounts/%d/csat_survey_responses/download?since=%d&until=%d&user_ids=%d&inbox_id=%d&team_id=%d&rating=5",
+		s.account.ID, since, until, agent.ID, conversation.InboxID, *conversation.TeamID)
+	w := httptest.NewRecorder()
+	req, _ := http.NewRequest("GET", url, nil)
+	req.Host = "app.example.test"
+	req.Header.Set("X-Forwarded-Proto", "https")
+	r.ServeHTTP(w, req)
+
+	assert.Equal(s.T(), http.StatusOK, w.Code)
+	assert.Equal(s.T(), "attachment; filename=csat_report.csv", w.Header().Get("Content-Disposition"))
+	reader := csv.NewReader(strings.NewReader(w.Body.String()))
+	reader.FieldsPerRecord = -1
+	rows, err := reader.ReadAll()
+	s.Require().NoError(err)
+	s.Require().Len(rows, 3)
+	assert.Equal(s.T(), []string{"Agent Name", "Rating", "Feedback Comment", "Contact Name", "Contact Email Address", "Contact Phone Number", "Link to the conversation", "Recorded date", "Review Notes"}, rows[0])
+	assert.Equal(s.T(), "CSAT Agent (csat-agent@example.com)", rows[1][0])
+	assert.Equal(s.T(), "5", rows[1][1])
+	assert.Equal(s.T(), "Great", rows[1][2])
+	assert.Equal(s.T(), contact.Name, rows[1][3])
+	assert.Equal(s.T(), contact.Email, rows[1][4])
+	assert.Equal(s.T(), contact.PhoneNumber, rows[1][5])
+	assert.Equal(s.T(), fmt.Sprintf("https://app.example.test/app/accounts/%d/conversations/42", s.account.ID), rows[1][6])
+	assert.Equal(s.T(), createdAt.Format(time.RFC3339), rows[1][7])
+	assert.Equal(s.T(), "Needs follow up", rows[1][8])
+	assert.Equal(s.T(), "Reporting period 1970-01-01 to 3000-01-01", rows[2][0])
+}
+
 func (s *CsatSurveyHandlerTestSuite) TestUpdateReviewNotes_Success() {
 	_, reviewer, _, _, _ := s.seedAccountCsatResponseGraph(time.Now().Add(-time.Hour), 5)
 	var survey automation.CsatSurveyResponse