package v1

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

	"github.com/gin-gonic/gin"
	"github.com/gochat/gochat/internal/model"
	"github.com/gochat/gochat/internal/repository"
	"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 CaptainPreferenceHandlerTestSuite struct {
	suite.Suite
	db      *gorm.DB
	handler *CaptainPreferenceHandler
	account *model.Account
}

func (s *CaptainPreferenceHandlerTestSuite) 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.CaptainPreference{}))
	s.db = db

	repo := repository.NewCaptainPreferenceRepo(db)
	svc := service.NewCaptainPreferenceService(repo)
	s.handler = NewCaptainPreferenceHandler(svc)

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

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

func TestCaptainPreferenceHandlerSuite(t *testing.T) {
	suite.Run(t, new(CaptainPreferenceHandlerTestSuite))
}

func (s *CaptainPreferenceHandlerTestSuite) TestCreate_BadRequest_InvalidAccountID() {
	r := gin.New()
	r.POST("/api/v1/accounts/:id/captain/preferences", s.handler.Create)

	w := httptest.NewRecorder()
	req, _ := http.NewRequest("POST", "/api/v1/accounts/abc/captain/preferences", nil)
	req.Header.Set("Content-Type", "application/json")
	r.ServeHTTP(w, req)

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

func (s *CaptainPreferenceHandlerTestSuite) TestCreate_BadRequest_EmptyBody() {
	r := gin.New()
	r.POST("/api/v1/accounts/:id/captain/preferences", s.handler.Create)

	w := httptest.NewRecorder()
	req, _ := http.NewRequest("POST", fmt.Sprintf("/api/v1/accounts/%d/captain/preferences", s.account.ID), nil)
	req.Header.Set("Content-Type", "application/json")
	r.ServeHTTP(w, req)

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

func (s *CaptainPreferenceHandlerTestSuite) TestCreate_Success() {
	r := gin.New()
	r.POST("/api/v1/accounts/:id/captain/preferences", s.handler.Create)

	body := map[string]interface{}{
		"tone":                 "professional",
		"language":             "en",
		"auto_label_enabled":   true,
		"auto_follow_up_enabled": false,
	}
	b, _ := json.Marshal(body)

	w := httptest.NewRecorder()
	req, _ := http.NewRequest("POST", fmt.Sprintf("/api/v1/accounts/%d/captain/preferences", s.account.ID), bytes.NewBuffer(b))
	req.Header.Set("Content-Type", "application/json")
	r.ServeHTTP(w, req)

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

func (s *CaptainPreferenceHandlerTestSuite) TestGet_BadRequest_InvalidAccountID() {
	r := gin.New()
	r.GET("/api/v1/accounts/:id/captain/preferences", s.handler.Get)

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

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

func (s *CaptainPreferenceHandlerTestSuite) TestUpdate_BadRequest_InvalidAccountID() {
	r := gin.New()
	r.PUT("/api/v1/accounts/:id/captain/preferences", s.handler.Update)

	w := httptest.NewRecorder()
	req, _ := http.NewRequest("PUT", "/api/v1/accounts/abc/captain/preferences", nil)
	req.Header.Set("Content-Type", "application/json")
	r.ServeHTTP(w, req)

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

func (s *CaptainPreferenceHandlerTestSuite) TestDelete_BadRequest_InvalidAccountID() {
	r := gin.New()
	r.DELETE("/api/v1/accounts/:id/captain/preferences", s.handler.Delete)

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

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