package handler

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

	"github.com/gin-gonic/gin"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/mock"

	"github.com/Nanqipro/YunQue-Tech-Projects/ai_english_learning/serve/api/handlers"
	"github.com/Nanqipro/YunQue-Tech-Projects/ai_english_learning/serve/internal/common"
	"github.com/Nanqipro/YunQue-Tech-Projects/ai_english_learning/serve/internal/services"
)

type MockVocabularyService struct {
	mock.Mock
}

// 显式实现 VocabularyServiceInterface 接口
var _ interfaces.VocabularyServiceInterface = (*MockVocabularyService)(nil)

func (m *MockVocabularyService) GetDailyStats(userID string) (map[string]interface{}, error) {
	args := m.Called(userID)
	return args.Get(0).(map[string]interface{}), args.Error(1)
}

func TestGetDailyVocabularyStats(t *testing.T) {
	// 初始化 Gin 引擎
	gin.SetMode(gin.TestMode)
	r := gin.Default()

	// 创建 Mock 服务
	mockService := new(MockVocabularyService)
	mockService.On("GetDailyStats", "test_user").Return(map[string]interface{}{
		"wordsLearned": 10,
		"studyTimeMinutes": 30,
	}, nil)

	mockService.On("GetDailyStats", "").Return(nil, common.NewBusinessError(400, "用户ID不能为空"))

	// 创建处理器
	h := handlers.NewVocabularyHandler(mockService, nil)
	r.GET("/api/vocabulary/daily", h.GetDailyVocabularyStats)

	// 测试成功情况
	req, _ := http.NewRequest(http.MethodGet, "/api/vocabulary/daily?user_id=test_user", nil)
	w := httptest.NewRecorder()
	r.ServeHTTP(w, req)

	assert.Equal(t, http.StatusOK, w.Code)
	assert.Contains(t, w.Body.String(), "wordsLearned")
	assert.Contains(t, w.Body.String(), "studyTimeMinutes")

	// 测试缺少用户ID
	req, _ = http.NewRequest(http.MethodGet, "/api/vocabulary/daily", nil)
	w = httptest.NewRecorder()
	r.ServeHTTP(w, req)

	assert.Equal(t, http.StatusBadRequest, w.Code)
	assert.Contains(t, w.Body.String(), "用户ID不能为空")
}