package com.danielbohry.authservice.config;

import com.danielbohry.authservice.service.auth.JwtAuthenticationFilter;
import com.danielbohry.authservice.service.auth.RateLimitingFilter;
import com.danielbohry.authservice.service.user.UserService;
import lombok.RequiredArgsConstructor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.AuthenticationProvider;
import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
import org.springframework.security.config.annotation.authentication.configuration.AuthenticationConfiguration;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.SecurityFilterChain;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import org.springframework.http.HttpMethod;

import static org.springframework.security.config.http.SessionCreationPolicy.STATELESS;

@Configuration
@EnableWebSecurity
@RequiredArgsConstructor
public class SecurityConfig {

    private final JwtAuthenticationFilter jwtAuthenticationFilter;
    private final RateLimitingFilter rateLimitingFilter;
    private final UserService userService;

    @Bean
    public SecurityFilterChain securityFilterChain(HttpSecurity http) {
        http
                .csrf(AbstractHttpConfigurer::disable)
                .authorizeHttpRequests(requests -> requests
                        .requestMatchers(
                                "/actuator/health",
                                "/actuator/info",
                                "/actuator/prometheus",
                                "/api/register",
                                "/api/authenticate",
                                "/api/forgot-password"
                        ).permitAll()
                        .requestMatchers(
                                "/",
                                "/index.html",
                                "/admin.html",
                                "/css/**",
                                "/js/**",
                                "/img/**"
                        ).permitAll()
                        .requestMatchers(HttpMethod.OPTIONS, "/api/users", "/api/authorize", "/api/refresh").permitAll()
                        .requestMatchers("/api/users", "/api/authorize", "/api/refresh").authenticated()
                        .anyRequest().authenticated()
                )
                .sessionManagement(manager -> manager.sessionCreationPolicy(STATELESS))
                .authenticationProvider(authenticationProvider())
                .addFilterBefore(rateLimitingFilter, UsernamePasswordAuthenticationFilter.class)
                .addFilterBefore(jwtAuthenticationFilter, UsernamePasswordAuthenticationFilter.class);

        return http.build();
    }

    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }

    @Bean
    public AuthenticationProvider authenticationProvider() {
        DaoAuthenticationProvider authProvider = new DaoAuthenticationProvider(userService.userDetailsService());
        authProvider.setPasswordEncoder(passwordEncoder());
        return authProvider;
    }

    @Bean
    public AuthenticationManager authenticationManager(AuthenticationConfiguration config) {
        return config.getAuthenticationManager();
    }

}