package v1

import (
	"fmt"
	"net/http"
	"net/http/httptest"
	"testing"

	"github.com/gin-gonic/gin"
	"github.com/gochat/gochat/internal/csat"
	"github.com/gochat/gochat/internal/model"
	"github.com/gochat/gochat/internal/service"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/suite"
	"gorm.io/driver/sqlite"
	"gorm.io/gorm"
	"gorm.io/gorm/logger"
)

type csatDBProvider struct {
	db *gorm.DB
}

func (p *csatDBProvider) DB() *gorm.DB { return p.db }

type CsatMetricsHandlerTestSuite struct {
	suite.Suite
	db      *gorm.DB
	handler *CsatMetricsHandler
	account *model.Account
}

func (s *CsatMetricsHandlerTestSuite) SetupSuite() {
	gin.SetMode(gin.TestMode)
	db, err := gorm.Open(sqlite.Open("file::memory:"), &gorm.Config{
		Logger: logger.Default.LogMode(logger.Silent),
	})
	s.Require().NoError(err)
	s.Require().NoError(db.AutoMigrate(&model.Account{}, &csat.CsatSurveyResponse{}, &model.ReportingEventsRollup{}, &model.Conversation{}))
	s.db = db

	provider := &csatDBProvider{db: db}
	svc := service.NewCsatMetricsService(provider)
	s.handler = NewCsatMetricsHandler(svc)

	s.account = &model.Account{Name: "test-csat-account"}
	s.Require().NoError(db.Create(s.account).Error)
}

func (s *CsatMetricsHandlerTestSuite) TearDownSuite() {
	if s.db != nil {
		sqlDB, _ := s.db.DB()
		sqlDB.Close()
	}
}

func TestCsatMetricsHandlerSuite(t *testing.T) {
	suite.Run(t, new(CsatMetricsHandlerTestSuite))
}

func (s *CsatMetricsHandlerTestSuite) TestMetrics_Success() {
	r := gin.New()
	r.GET("/api/v1/accounts/:account_id/csat_metrics", func(c *gin.Context) {
		c.Set("account_id", float64(s.account.ID))
		s.handler.Metrics(c)
	})

	w := httptest.NewRecorder()
	req, _ := http.NewRequest("GET", fmt.Sprintf("/api/v1/accounts/%d/csat_metrics", s.account.ID), nil)
	r.ServeHTTP(w, req)

	assert.Equal(s.T(), http.StatusOK, w.Code)
}

func (s *CsatMetricsHandlerTestSuite) TestDownload_Success() {
	r := gin.New()
	r.GET("/api/v1/accounts/:account_id/csat_metrics/download", func(c *gin.Context) {
		c.Set("account_id", float64(s.account.ID))
		s.handler.Download(c)
	})

	w := httptest.NewRecorder()
	req, _ := http.NewRequest("GET", fmt.Sprintf("/api/v1/accounts/%d/csat_metrics/download", s.account.ID), nil)
	r.ServeHTTP(w, req)

	// Download may return 200 with CSV or 404 if no data
	assert.True(s.T(), w.Code == http.StatusOK || w.Code == http.StatusNotFound || w.Code == http.StatusNoContent)
}