package postservicelogic

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

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

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

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

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

	// 測試數據集
	tests := []struct {
		name      string
		input     *tweeting.DeletePostsReq
		prepare   func()
		expectErr bool
	}{
		{
			name: "成功刪除貼文",
			input: &tweeting.DeletePostsReq{
				PostId: []string{"12345", "67890"},
			},
			prepare: func() {
				// 模擬 DeleteMany 成功
				mockPostModel.EXPECT().DeleteMany(gomock.Any(), "12345", "67890").Return(int64(2), nil).Times(1)
			},
			expectErr: false,
		},
		{
			name: "刪除貼文失敗",
			input: &tweeting.DeletePostsReq{
				PostId: []string{"12345", "67890"},
			},
			prepare: func() {
				// 模擬 DeleteMany 失敗
				mockPostModel.EXPECT().DeleteMany(gomock.Any(), "12345", "67890").Return(int64(0), errors.New("delete 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 DeletePostLogic
			logic := DeletePostLogic{
				svcCtx: svcCtx,
				ctx:    context.TODO(),
			}

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

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