package postservicelogic

import (
	"app-cloudep-tweeting-service/gen_result/pb/tweeting"
	mocklib "app-cloudep-tweeting-service/internal/mock/lib"
	mockmodel "app-cloudep-tweeting-service/internal/mock/model"
	"app-cloudep-tweeting-service/internal/svc"
	"context"
	"errors"

	"go.mongodb.org/mongo-driver/mongo"
	"google.golang.org/protobuf/proto"

	"github.com/stretchr/testify/assert"
	"go.uber.org/mock/gomock"

	"testing"
)

func TestUpdatePost(t *testing.T) {
	ctrl := gomock.NewController(t)
	defer ctrl.Finish()

	// 初始化 mock 依賴
	mockPostModel := mockmodel.NewMockPostModel(ctrl)
	mockValidate := mocklib.NewMockValidate(ctrl)

	// 初始化服務上下文
	svcCtx := &svc.ServiceContext{
		PostModel: mockPostModel,
		Validate:  mockValidate,
	}

	// 測試數據集
	tests := []struct {
		name      string
		input     *tweeting.UpdatePostReq
		prepare   func()
		expectErr bool
	}{
		{
			name: "成功更新貼文",
			input: &tweeting.UpdatePostReq{
				PostId:  "66cfdc1d6f8fe7eac1e52523",
				Content: proto.String("Updated content"),
				Tags:    []string{"tag1", "tag2"},
				Media: []*tweeting.Media{
					{
						Url:  "http://example.com/image.png",
						Type: "image",
					},
				},
				LikeCount:    proto.Int64(10),
				DislikeCount: proto.Int64(2),
			},
			prepare: func() {
				// 模擬 Validate 成功
				mockValidate.EXPECT().ValidateAll(gomock.Any()).Return(nil).Times(1)
				// 模擬 UpdateOptional 成功
				mockPostModel.EXPECT().UpdateOptional(gomock.Any(), gomock.Any()).Return(&mongo.UpdateResult{
					ModifiedCount: 1,
				}, nil).Times(1)
			},
			expectErr: false,
		},
		{
			name: "驗證失敗",
			input: &tweeting.UpdatePostReq{
				PostId: "",
			},
			prepare: func() {
				// 模擬 Validate 失敗
				mockValidate.EXPECT().ValidateAll(gomock.Any()).Return(errors.New("validation failed")).Times(1)
			},
			expectErr: true,
		},
		{
			name: "更新貼文失敗",
			input: &tweeting.UpdatePostReq{
				PostId:  "66cfdc1d6f8fe7eac1e52523",
				Content: proto.String("Updated content"),
			},
			prepare: func() {
				// 模擬 Validate 成功
				mockValidate.EXPECT().ValidateAll(gomock.Any()).Return(nil).Times(1)
				// 模擬 UpdateOptional 失敗
				mockPostModel.EXPECT().UpdateOptional(gomock.Any(), gomock.Any()).Return(&mongo.UpdateResult{
					ModifiedCount: 0,
				}, errors.New("update failed")).Times(1)
			},
			expectErr: true,
		},
	}

	// 執行測試
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			// 設置測試環境
			tt.prepare()

			// 初始化 UpdatePostLogic
			logic := UpdatePostLogic{
				svcCtx: svcCtx,
				ctx:    context.TODO(),
			}

			// 執行 UpdatePost
			_, err := logic.UpdatePost(tt.input)

			// 驗證結果
			if tt.expectErr {
				assert.Error(t, err)
			} else {
				assert.NoError(t, err)
			}
		})
	}
}