package com.saas.shared.security;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
import org.springframework.security.config.annotation.authentication.configuration.AuthenticationConfiguration;
import org.springframework.security.config.annotation.method.configuration.EnableMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
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.web.cors.CorsConfiguration;
import org.springframework.web.cors.CorsConfigurationSource;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;

import java.util.Arrays;
import java.util.List;

@Configuration
@EnableWebSecurity
@EnableMethodSecurity
public class SecurityConfig {

    @Autowired
    private CustomUserDetailsService customUserDetailsService;

    @Autowired
    private JwtAuthenticationFilter jwtAuthenticationFilter;

    @Autowired
    private TenantIdentifierFilter tenantIdentifierFilter;

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

    @Bean
    public DaoAuthenticationProvider authenticationProvider() {
        DaoAuthenticationProvider authProvider = new DaoAuthenticationProvider();
        authProvider.setUserDetailsService(customUserDetailsService);
        authProvider.setPasswordEncoder(passwordEncoder());
        return authProvider;
    }

    @Bean
    public AuthenticationManager authenticationManager(AuthenticationConfiguration authConfig) throws Exception {
        return authConfig.getAuthenticationManager();
    }

    @Bean
    public CorsConfigurationSource corsConfigurationSource() {
        CorsConfiguration configuration = new CorsConfiguration();
        configuration.setAllowedOrigins(Arrays.asList(
                "http://localhost:3000",
                "http://localhost:4200",
                "http://192.168.100.151:4200",
                "http://localhost:5000",
                "http://127.0.0.1:3000",
                "http://127.0.0.1:4200",
                "http://127.0.0.1:5000",
                "http://138.201.127.106:8000",
                "http://138.201.127.106"));
        configuration.setAllowedMethods(Arrays.asList("GET", "POST", "PUT", "PATCH", "DELETE", "OPTIONS"));
        configuration.setAllowedHeaders(Arrays.asList("*"));
        configuration.setAllowCredentials(true);
        configuration.setExposedHeaders(Arrays.asList("Authorization", "Content-Type"));
        configuration.setMaxAge(3600L);

        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**", configuration);
        return source;
    }

    @Bean
    public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
        http
                .cors(cors -> cors.configurationSource(corsConfigurationSource()))
                .csrf(csrf -> csrf.disable())
                .sessionManagement(session -> session.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
                .authorizeHttpRequests(auth -> auth
                        .requestMatchers("/health", "/api/auth/**").permitAll()
                        .requestMatchers("/api/voip/**").permitAll() // Twilio webhooks
                        .requestMatchers("/media-stream").permitAll() // Twilio WebSocket
                        .requestMatchers("/api/ws/**").permitAll() // WebSocket Endpoint
                        .requestMatchers("/actuator/**").permitAll() // Actuator endpoints
                        .requestMatchers("/swagger-ui/**", "/v3/api-docs/**").permitAll() // OpenAPI docs
                        .requestMatchers(
                                "/",
                                "/index.html",
                                "/assets/**",
                                "/**.js",
                                "/**.css",
                                "/**.ico",
                                "/**.png",
                                "/**.jpg",
                                "/**.svg",
                                "/**.json",
                                "/manifest.json")
                        .permitAll()
                        .requestMatchers(
                                "/signin",
                                "/signup",
                                "/forgot-password",
                                "/reset-password")
                        .permitAll()
                        .requestMatchers("/api/admin/**").hasRole("ADMIN")
                        .anyRequest().authenticated())
                .authenticationProvider(authenticationProvider())
                .addFilterBefore(jwtAuthenticationFilter, UsernamePasswordAuthenticationFilter.class)
                .addFilterAfter(tenantIdentifierFilter, JwtAuthenticationFilter.class);

        return http.build();
    }
}