package v1

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

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

type CsatSurveyHandlerTestSuite struct {
	suite.Suite
	db      *gorm.DB
	handler *CsatSurveyHandler
	account *model.Account
}

type csatSurveyTestDBProvider struct {
	db *gorm.DB
}

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

func (s *CsatSurveyHandlerTestSuite) 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{}, &model.Conversation{}, &automation.CsatSurveyResponse{}, &model.ReportingEventsRollup{}))
	s.db = db

	svc := automation.NewCsatSurveyService(&csatSurveyTestDBProvider{db: db})
	s.handler = NewCsatSurveyHandler(svc)

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

func (s *CsatSurveyHandlerTestSuite) SetupTest() {
	s.db.Exec("DELETE FROM csat_survey_responses")
}

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

func TestCsatSurveyHandlerSuite(t *testing.T) {
	suite.Run(t, new(CsatSurveyHandlerTestSuite))
}

func (s *CsatSurveyHandlerTestSuite) TestList_Success() {
	r := gin.New()
	r.GET("/api/v1/accounts/:account_id/csats", s.handler.List)

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

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

func (s *CsatSurveyHandlerTestSuite) TestMetrics_Success() {
	r := gin.New()
	r.GET("/api/v1/accounts/:account_id/csat_metrics", s.handler.Metrics)

	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 *CsatSurveyHandlerTestSuite) TestUpdateReviewNotes_Success() {
	survey := &automation.CsatSurveyResponse{AccountID: s.account.ID, ConversationID: 1, Rating: 5}
	s.Require().NoError(s.db.Create(survey).Error)

	r := gin.New()
	r.PUT("/api/v1/accounts/:account_id/csats/:id/review_notes", func(c *gin.Context) {
		c.Set("user_id", float64(1))
		s.handler.UpdateReviewNotes(c)
	})

	w := httptest.NewRecorder()
	body := `{"review_notes":"good conversation"}`
	req, _ := http.NewRequest("PUT", fmt.Sprintf("/api/v1/accounts/%d/csats/%d/review_notes", s.account.ID, survey.ID), bytes.NewBufferString(body))
	req.Header.Set("Content-Type", "application/json")
	r.ServeHTTP(w, req)

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

func (s *CsatSurveyHandlerTestSuite) TestUpdate_Success() {
	survey := &automation.CsatSurveyResponse{AccountID: s.account.ID, ConversationID: 1, Rating: 5}
	s.Require().NoError(s.db.Create(survey).Error)

	r := gin.New()
	r.PUT("/api/v1/accounts/:account_id/csats/:id", func(c *gin.Context) {
		c.Set("user_id", float64(1))
		s.handler.Update(c)
	})

	w := httptest.NewRecorder()
	body := `{"review_notes":"updated notes"}`
	req, _ := http.NewRequest("PUT", fmt.Sprintf("/api/v1/accounts/%d/csats/%d", s.account.ID, survey.ID), bytes.NewBufferString(body))
	req.Header.Set("Content-Type", "application/json")
	r.ServeHTTP(w, req)

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

func (s *CsatSurveyHandlerTestSuite) TestList_BadRequest_InvalidAccountID() {
	r := gin.New()
	r.GET("/api/v1/accounts/:account_id/csats", s.handler.List)

	w := httptest.NewRecorder()
	req, _ := http.NewRequest("GET", "/api/v1/accounts/abc/csats", nil)
	r.ServeHTTP(w, req)

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