public async Task <RocketChatUserDto[]> GetUsersByEmailAsync(GetRocketChatUsersByEmailInputDto input)
{
var cacheKeys = input.Emails.Select(CalculateUserKey).ToArray();
var cachedUsers = await UserCache.GetManyAsync(cacheKeys);
var users = cachedUsers.Select(x => x.Value).OfType <RocketChatUserDto>().ToList().ToList();
var missingUserKeys = cacheKeys
.Where(x => !users.Any(i => i.Emails != null && i.Emails.Any(e => string.Equals(e.Address, x, StringComparison.OrdinalIgnoreCase))))
.ToArray();
if (missingUserKeys.Any())
{
var query = new GetRocketChatUsersByEmailInputDto
{
Emails = missingUserKeys
};
var missingUsers = await GetUsersByEmailFromApiAsync(query);
var cacheItems = missingUsers
.Select(x => new KeyValuePair <string, RocketChatUserDto>(CalculateUserKey(GetVerifiedOrFirstEmail(x)), x))
.ToArray();
await UserCache.SetManyAsync(cacheItems);
users.AddRange(missingUsers);
}
return(users.ToArray());
}
async Task <RocketChatUserDto[]> GetUsersByEmailFromApiAsync(GetRocketChatUsersByEmailInputDto input)
{
// TODO: Create a proper filter query. For now it's easier to just fetch all users
using (var client = HttpClientFactory.CreateClient("RocketChat"))
{
await Authenticator.AuthenticateAsync(client);
var response = await client.GetFromJsonAsync <UserListResponse>("api/v1/users.list");
return(response.Users
.Where(user => user.Emails != null &&
user.Emails.Any(email => input.Emails.Contains(email.Address, StringComparer.OrdinalIgnoreCase)))
.ToArray());
}
}