Asp.Net Core Identity or IdentityServer4 with Bearer Token Authentication

I'm creating an application with generator-aspnetcore-spa and I would like to add identity.

I would like to implement Bearer Token Authentication. I've read that Asp.Net Core Identity and IdentityServer4 support Bearer Token Authentication. Moreover, I would like to add an option to sign in via third part libraries like facebook or google.

So could you provide some information or resources or suggest me which solution should I use with Angular2?

Thanks in Advance.