/// <summary>
/// Provide search result for table to be used by user's based on Azure Search service.
/// </summary>
/// <param name="searchScope">Scope of the search.</param>
/// <param name="searchQuery">Query which the user had typed in Messaging Extension search field.</param>
/// <param name="userObjectId">Azure Active Directory object id of the user.</param>
/// <param name="count">Number of search results to return.</param>
/// <param name="skip">Number of search results to skip.</param>
/// <param name="sortBy">Represents sorting type like: Popularity or Newest.</param>
/// <param name="filterQuery">Filter bar based query.</param>
/// <returns>List of search results.</returns>
public async Task <IEnumerable <PostEntity> > GetPostsAsync(
PostSearchScope searchScope,
string searchQuery,
string userObjectId,
int?count = null,
int?skip = null,
int?sortBy = null,
string filterQuery = null)
{
await this.EnsureInitializedAsync();
var searchParameters = this.InitializeSearchParameters(searchScope, userObjectId, count, skip, sortBy, filterQuery);
SearchContinuationToken continuationToken = null;
var posts = new List <PostEntity>();
var postSearchResult = await this.searchIndexClient.Documents.SearchAsync <PostEntity>(searchQuery, searchParameters);
if (postSearchResult?.Results != null)
{
posts.AddRange(postSearchResult.Results.Select(p => p.Document));
continuationToken = postSearchResult.ContinuationToken;
}
if (continuationToken == null)
{
return(posts);
}
do
{
var searchResult = await this.searchIndexClient.Documents.ContinueSearchAsync <PostEntity>(continuationToken);
if (searchResult?.Results != null)
{
posts.AddRange(searchResult.Results.Select(p => p.Document));
continuationToken = searchResult.ContinuationToken;
}
}while (continuationToken != null);
return(posts);
}
/// <summary>
/// Initialization of search service parameters which will help in searching the documents.
/// </summary>
/// <param name="searchScope">Scope of the search.</param>
/// <param name="userObjectId">Azure Active Directory object id of the user.</param>
/// <param name="count">Number of search results to return.</param>
/// <param name="skip">Number of search results to skip.</param>
/// <param name="sortBy">Represents sorting type like: Popularity or Newest.</param>
/// <param name="filterQuery">Filter bar based query.</param>
/// <returns>Represents an search parameter object.</returns>
private SearchParameters InitializeSearchParameters(
PostSearchScope searchScope,
string userObjectId,
int?count = null,
int?skip = null,
int?sortBy = null,
string filterQuery = null)
{
SearchParameters searchParameters = new SearchParameters()
{
Top = count ?? ApiSearchResultCount,
Skip = skip ?? 0,
IncludeTotalResultCount = false,
Select = new[]
{
nameof(PostEntity.PostId),
nameof(PostEntity.Type),
nameof(PostEntity.Title),
nameof(PostEntity.Description),
nameof(PostEntity.ContentUrl),
nameof(PostEntity.Tags),
nameof(PostEntity.CreatedDate),
nameof(PostEntity.CreatedByName),
nameof(PostEntity.UpdatedDate),
nameof(PostEntity.UserId),
nameof(PostEntity.TotalVotes),
nameof(PostEntity.IsRemoved),
},
SearchFields = new[] { nameof(PostEntity.Title) },
Filter = !string.IsNullOrEmpty(filterQuery) ? filterQuery : string.Empty,
};
switch (searchScope)
{
case PostSearchScope.AllItems:
searchParameters.OrderBy = new[] { $"{nameof(PostEntity.UpdatedDate)} desc" };
break;
case PostSearchScope.PostedByMe:
searchParameters.Filter = $"{nameof(PostEntity.UserId)} eq '{userObjectId}' ";
searchParameters.OrderBy = new[] { $"{nameof(PostEntity.UpdatedDate)} desc" };
break;
case PostSearchScope.Popular:
searchParameters.OrderBy = new[] { $"{nameof(PostEntity.TotalVotes)} desc" };
break;
case PostSearchScope.TeamPreferenceTags:
searchParameters.SearchFields = new[] { nameof(PostEntity.Tags) };
searchParameters.Top = 5000;
searchParameters.Select = new[] { nameof(PostEntity.Tags) };
break;
case PostSearchScope.FilterAsPerTeamTags:
searchParameters.OrderBy = new[] { $"{nameof(PostEntity.UpdatedDate)} desc" };
searchParameters.SearchFields = new[] { nameof(PostEntity.Tags) };
break;
case PostSearchScope.FilterPostsAsPerDateRange:
searchParameters.OrderBy = new[] { $"{nameof(PostEntity.UpdatedDate)} desc" };
searchParameters.Top = 200;
break;
case PostSearchScope.UniqueUserNames:
searchParameters.OrderBy = new[] { $"{nameof(PostEntity.UpdatedDate)} desc" };
searchParameters.Select = new[] { nameof(PostEntity.CreatedByName), nameof(PostEntity.UserId) };
break;
case PostSearchScope.SearchTeamPostsForTitleText:
searchParameters.OrderBy = new[] { $"{nameof(PostEntity.UpdatedDate)} desc" };
searchParameters.QueryType = QueryType.Full;
searchParameters.SearchFields = new[] { nameof(PostEntity.Title) };
break;
case PostSearchScope.FilterTeamPosts:
if (sortBy != null)
{
searchParameters.OrderBy = sortBy == SortByPopular ? new[] { $"{nameof(PostEntity.TotalVotes)} desc" } : new[] { $"{nameof(PostEntity.UpdatedDate)} desc" };
}
searchParameters.SearchFields = new[] { nameof(PostEntity.Tags) };
break;
}
return(searchParameters);
}