package com.snp.batch.global.config;

import io.swagger.v3.oas.models.OpenAPI;
import io.swagger.v3.oas.models.info.Contact;
import io.swagger.v3.oas.models.info.Info;
import io.swagger.v3.oas.models.info.License;
import io.swagger.v3.oas.models.servers.Server;
import org.springdoc.core.models.GroupedOpenApi;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.List;

/**
 * Swagger/OpenAPI 3.0 설정
 *
 * Swagger UI 접속 URL:
 * - Swagger UI: http://localhost:8031/snp-global/swagger-ui/index.html
 * - API 문서 (JSON): http://localhost:8031/snp-global/v3/api-docs
 * - API 문서 (YAML): http://localhost:8031/snp-global/v3/api-docs.yaml
 *
 * 환경별 노출:
 * - dev: 모든 API 그룹 노출
 * - prod: Bypass API 그룹만 노출
 */
@Configuration
public class SwaggerConfig {

    @Value("${server.port:8081}")
    private int serverPort;

    @Value("${server.servlet.context-path:}")
    private String contextPath;

    @Value("${app.environment:dev}")
    private String environment;

    @Bean
    @ConditionalOnProperty(name = "app.environment", havingValue = "dev", matchIfMissing = true)
    public GroupedOpenApi bypassConfigApi() {
        return GroupedOpenApi.builder()
                .group("2. Bypass Config")
                .pathsToMatch("/api/bypass-config/**")
                .addOpenApiCustomizer(openApi -> openApi.info(new Info()
                        .title("Bypass Config API")
                        .description("Bypass API 설정 및 코드 생성 관리 API")
                        .version("v1.0.0")))
                .build();
    }

    @Bean
    @ConditionalOnProperty(name = "app.environment", havingValue = "dev", matchIfMissing = true)
    public GroupedOpenApi screeningGuideApi() {
        return GroupedOpenApi.builder()
                .group("4. Screening Guide")
                .pathsToMatch("/api/screening-guide/**")
                .addOpenApiCustomizer(openApi -> openApi.info(new Info()
                        .title("Screening Guide API")
                        .description("Risk & Compliance Screening Guide 조회 API")
                        .version("v1.0.0")))
                .build();
    }

    @Bean
    public GroupedOpenApi bypassApi() {
        return GroupedOpenApi.builder()
                .group("3. Bypass API")
                .pathsToMatch("/api/**")
                .pathsToExclude("/api/bypass-config/**", "/api/screening-guide/**", "/api/bypass-account/**")
                .addOpenApiCustomizer(openApi -> {
                    openApi.info(new Info()
                            .title("Bypass API")
                            .description("S&P Global 선박/해운 데이터를 제공합니다.")
                            .version("v1.0.0"));
                })
                .build();
    }

    @Bean
    @ConditionalOnProperty(name = "app.environment", havingValue = "dev", matchIfMissing = true)
    public GroupedOpenApi bypassAccountApi() {
        return GroupedOpenApi.builder()
                .group("5. Bypass Account")
                .pathsToMatch("/api/bypass-account/**")
                .addOpenApiCustomizer(openApi -> openApi.info(new Info()
                        .title("Bypass Account Management API")
                        .description("Bypass API 계정 및 신청 관리 API")
                        .version("v1.0.0")))
                .build();
    }

    @Bean
    public OpenAPI openAPI() {
        List<Server> servers = "prod".equals(environment)
                ? List.of(
                        new Server()
                                .url("https://guide.gc-si.dev" + contextPath)
                                .description("GC 도메인"))
                : List.of(
                        new Server()
                                .url("http://localhost:" + serverPort + contextPath)
                                .description("로컬 개발 서버"),
                        new Server()
                                .url("http://211.208.115.83:" + serverPort + contextPath)
                                .description("중계 서버"),
                        new Server()
                                .url("https://guide.gc-si.dev" + contextPath)
                                .description("GC 도메인"));

        return new OpenAPI()
                .info(defaultApiInfo())
                .servers(servers);
    }

    private Info defaultApiInfo() {
        return new Info()
                .title("SNP Global REST API")
                .description("""
                        ## S&P Global API - Risk & Compliance 서비스

                        S&P Global Maritime 데이터 서비스 REST API 문서입니다.

                        ### 제공 API
                        - **Bypass API**: S&P Global 선박/해운 데이터 조회
                        - **Bypass Config API**: Bypass API 설정 관리
                        - **Screening Guide API**: Risk & Compliance 스크리닝 가이드
                        - **Bypass Account API**: API 계정 관리

                        ### 버전 정보
                        - API Version: v1.0.0
                        - Spring Boot: 3.2.1
                        """)
                .version("v1.0.0")
                .contact(new Contact()
                        .name("SNP Batch Team")
                        .email("support@snp-batch.com")
                        .url("https://github.com/snp-batch"))
                .license(new License()
                        .name("Apache 2.0")
                        .url("https://www.apache.org/licenses/LICENSE-2.0"));
    }
}