using System;
using System.Diagnostics.CodeAnalysis;
using System.Reactive;

namespace Octokit.Reactive
{
    public interface IObservableAuthorizationsClient
    {
        /// <summary>
        /// Get all <see cref="Authorization"/>s for the authenticated user. This method requires basic auth.
        /// </summary>
        /// <remarks>
        /// See <a href="http://developer.github.com/v3/oauth/#list-your-authorizations">API documentation</a> for more
        /// details.
        /// </remarks>
        /// <returns>An <see cref="Authorization"/></returns>
        [SuppressMessage("Microsoft.Design", "CA1024:UsePropertiesWhereAppropriate",
            Justification = "It's an API call, so it's not a property.")]
        IObservable<Authorization> GetAll();

        /// <summary>
        /// Get a specific <see cref="Authorization"/> for the authenticated user. This method requires basic auth.
        /// </summary>
        /// <remarks>
        /// See <a href="http://developer.github.com/v3/oauth/#get-a-single-authorization">API documentation</a> for
        /// more details.
        /// </remarks>
        /// <param name="id">The id of the <see cref="Authorization"/></param>
        /// <returns>An <see cref="Authorization"/></returns>
        [SuppressMessage("Microsoft.Naming", "CA1716:IdentifiersShouldNotMatchKeywords", MessageId = "Get",
            Justification = "It's fiiiine. It's fine. Trust us.")]
        IObservable<Authorization> Get(int id);

        /// <summary>
        /// This method will create a new authorization for the specified OAuth application, only if an authorization 
        /// for that application doesn’t already exist for the user. It returns the user’s token for the application
        /// if one exists. Otherwise, it creates one.
        /// </summary>
        /// <remarks>
        /// See <a href="http://developer.github.com/v3/oauth/#get-or-create-an-authorization-for-a-specific-app">API
        /// documentation</a> for more details.
        /// </remarks>
        /// <param name="clientId">Client ID for the OAuth application that is requesting the token</param>
        /// <param name="clientSecret">The client secret</param>
        /// <param name="newAuthorization">Defines the scopes and metadata for the token</param>
        /// <exception cref="AuthorizationException">Thrown when the user does not have permission to make 
        /// this request. Check </exception>
        /// <exception cref="TwoFactorRequiredException">Thrown when the current account has two-factor
        /// authentication enabled.</exception>
        /// <returns></returns>
        IObservable<ApplicationAuthorization> GetOrCreateApplicationAuthentication(
            string clientId,
            string clientSecret,
            NewAuthorization newAuthorization);

        /// <summary>
        /// This method will create a new authorization for the specified OAuth application, only if an authorization 
        /// for that application doesn’t already exist for the user. It returns the user’s token for the application
        /// if one exists. Otherwise, it creates one.
        /// </summary>
        /// <remarks>
        /// See <a href="http://developer.github.com/v3/oauth/#get-or-create-an-authorization-for-a-specific-app">API 
        /// documentation</a> for more details.
        /// </remarks>
        /// <param name="clientId">Client ID for the OAuth application that is requesting the token</param>
        /// <param name="clientSecret">The client secret</param>
        /// <param name="newAuthorization">Defines the scopes and metadata for the token</param>
        /// <param name="twoFactorAuthenticationCode">The two-factor authentication code provided by the user</param>
        /// <exception cref="AuthorizationException">Thrown when the user does not have permission to make 
        /// this request. Check </exception>
        /// <exception cref="TwoFactorChallengeFailedException">Thrown when the two-factor code is not
        /// valid.</exception>
        /// <returns></returns>
        IObservable<ApplicationAuthorization> GetOrCreateApplicationAuthentication(
            string clientId,
            string clientSecret,
            NewAuthorization newAuthorization,
            string twoFactorAuthenticationCode);

        /// <summary>
        /// Checks the validity of an OAuth token without running afoul of normal rate limits for failed login attempts.
        /// </summary>
        /// <remarks>
        /// This method requires authentication.
        /// See the <a href="https://developer.github.com/v3/oauth_authorizations/#check-an-authorization">API documentation</a> for more information.
        /// </remarks>
        /// <param name="clientId">Client ID of the OAuth application for the token</param>
        /// <param name="accessToken">The OAuth token to check</param>
        /// <returns>The valid <see cref="ApplicationAuthorization"/>.</returns>
        IObservable<ApplicationAuthorization> CheckApplicationAuthentication(string clientId, string accessToken);

        /// <summary>
        /// Resets a valid OAuth token for an OAuth application without end user involvment.
        /// </summary>
        /// <remarks>
        /// This method requires authentication.
        /// See the <a href="https://developer.github.com/v3/oauth_authorizations/#reset-an-authorization">API documentation</a> for more information.
        /// </remarks>
        /// <param name="clientId">ClientID of the OAuth application for the token</param>
        /// <param name="accessToken">The OAuth token to reset</param>
        /// <returns>The valid <see cref="ApplicationAuthorization"/> with a new OAuth token</returns>
        IObservable<ApplicationAuthorization> ResetApplicationAuthentication(string clientId, string accessToken);

        /// <summary>
        /// Revokes a single OAuth token for an OAuth application.
        /// </summary>
        /// <remarks>
        /// This method requires authentication.
        /// See the <a href="https://developer.github.com/v3/oauth_authorizations/#revoke-an-authorization-for-an-application">API documentation for more information.</a>
        /// </remarks>
        /// <param name="clientId">ClientID of the OAuth application for the token</param>
        /// <param name="accessToken">The OAuth token to revoke</param>
        /// <returns></returns>
        IObservable<Unit> RevokeApplicationAuthentication(string clientId, string accessToken);

        /// <summary>
        /// Revokes every OAuth token for an OAuth application.
        /// </summary>
        /// <remarks>
        /// This method requires authentication.
        /// See the <a href="https://developer.github.com/v3/oauth_authorizations/#revoke-all-authorizations-for-an-application">API documentation for more information.</a>
        /// </remarks>
        /// <param name="clientId">ClientID of the OAuth application for the token</param>
        /// <returns></returns>
        IObservable<Unit> RevokeAllApplicationAuthentications(string clientId);

        /// <summary>
        /// Update the <see cref="Authorization"/> specified by the id.
        /// </summary>
        /// <param name="id">The id of the <see cref="Authorization"/></param>
        /// <param name="authorizationUpdate">The changes to make to the authorization</param>
        /// <returns></returns>
        IObservable<Authorization> Update(int id, AuthorizationUpdate authorizationUpdate);

        /// <summary>
        /// Deletes an <see cref="Authorization"/>.
        /// </summary>
        /// <param name="id">The systemwide id of the authorization</param>
        /// <returns></returns>
        IObservable<Unit> Delete(int id);
    }
}