package org.gcube.isdashboard.web.rest;

import com.fasterxml.jackson.annotation.JsonCreator;
import jakarta.servlet.http.HttpServletRequest;
import java.util.Set;
import java.util.stream.Collectors;
import org.gcube.isdashboard.security.SecurityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/api")
public class AccountResource {

    private final Logger log = LoggerFactory.getLogger(AccountResource.class);

    private static class AccountResourceException extends RuntimeException {}

    /**
     * {@code GET  /account} : get the current user.
     *
     * @return the current user.
     * @throws AccountResourceException {@code 500 (Internal Server Error)} if the user couldn't be returned.
     */
    @GetMapping("/account")
    public UserVM getAccount() {
        String login = SecurityUtils.getCurrentUserLogin().orElseThrow(AccountResourceException::new);
        Set<String> authorities = SecurityContextHolder
            .getContext()
            .getAuthentication()
            .getAuthorities()
            .stream()
            .map(GrantedAuthority::getAuthority)
            .collect(Collectors.toSet());
        return new UserVM(login, authorities);
    }

    /**
     * {@code GET  /authenticate} : check if the user is authenticated, and return its login.
     *
     * @param request the HTTP request.
     * @return the login if the user is authenticated.
     */
    @GetMapping("/authenticate")
    public String isAuthenticated(HttpServletRequest request) {
        log.debug("REST request to check if the current user is authenticated");
        return request.getRemoteUser();
    }

    private static class UserVM {

        private String login;
        private Set<String> authorities;

        @JsonCreator
        UserVM(String login, Set<String> authorities) {
            this.login = login;
            this.authorities = authorities;
        }

        public boolean isActivated() {
            return true;
        }

        public Set<String> getAuthorities() {
            return authorities;
        }

        public String getLogin() {
            return login;
        }
    }
}