package com.snp.batch.global.dto;

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.time.LocalDateTime;
import java.util.List;
import java.util.Map;

/**
 * Job 실행 상세 정보 DTO
 * JobExecution + StepExecution 정보 포함
 */
@Data
@Builder
@NoArgsConstructor
@AllArgsConstructor
public class JobExecutionDetailDto {

    // Job Execution 기본 정보
    private Long executionId;
    private String jobName;
    private String status;
    private LocalDateTime startTime;
    private LocalDateTime endTime;
    private String exitCode;
    private String exitMessage;

    // Job Parameters
    private Map<String, Object> jobParameters;

    // Job Instance 정보
    private Long jobInstanceId;

    // 실행 통계
    private Long duration;  // 실행 시간 (ms)
    private Integer readCount;
    private Integer writeCount;
    private Integer skipCount;
    private Integer filterCount;

    // Step 실행 정보
    private List<StepExecutionDto> stepExecutions;

    /**
     * Step 실행 정보 DTO
     */
    @Data
    @Builder
    @NoArgsConstructor
    @AllArgsConstructor
    public static class StepExecutionDto {
        private Long stepExecutionId;
        private String stepName;
        private String status;
        private LocalDateTime startTime;
        private LocalDateTime endTime;
        private Integer readCount;
        private Integer writeCount;
        private Integer commitCount;
        private Integer rollbackCount;
        private Integer readSkipCount;
        private Integer processSkipCount;
        private Integer writeSkipCount;
        private Integer filterCount;
        private String exitCode;
        private String exitMessage;
        private Long duration;  // 실행 시간 (ms)
        private ApiCallInfo apiCallInfo;  // API 호출 정보 - StepExecutionContext 기반 (옵셔널)
        private StepApiLogSummary apiLogSummary;  // API 호출 로그 요약 - batch_api_log 기반 (옵셔널)
    }

    /**
     * API 호출 정보 DTO (StepExecutionContext 기반)
     */
    @Data
    @Builder
    @NoArgsConstructor
    @AllArgsConstructor
    public static class ApiCallInfo {
        private String apiUrl;           // API URL
        private String method;           // HTTP Method (GET, POST, etc.)
        private Map<String, Object> parameters;  // API 파라미터
        private Integer totalCalls;      // 전체 API 호출 횟수
        private Integer completedCalls;  // 완료된 API 호출 횟수
        private String lastCallTime;     // 마지막 호출 시간
    }

    /**
     * Step별 API 로그 집계 요약 (batch_api_log 테이블 기반)
     */
    @Data
    @Builder
    @NoArgsConstructor
    @AllArgsConstructor
    public static class StepApiLogSummary {
        private Long totalCalls;        // 총 호출수
        private Long successCount;      // 성공(2xx) 수
        private Long errorCount;        // 에러(4xx/5xx) 수
        private Double avgResponseMs;   // 평균 응답시간
        private Long maxResponseMs;     // 최대 응답시간
        private Long minResponseMs;     // 최소 응답시간
        private Long totalResponseMs;   // 총 응답시간
        private Long totalRecordCount;  // 총 반환 건수
        private List<ApiLogEntryDto> logs;  // 개별 로그 목록
    }

    /**
     * 개별 API 호출 로그 DTO (batch_api_log 1건)
     */
    @Data
    @Builder
    @NoArgsConstructor
    @AllArgsConstructor
    public static class ApiLogEntryDto {
        private Long logId;
        private String requestUri;
        private String httpMethod;
        private Integer statusCode;
        private Long responseTimeMs;
        private Long responseCount;
        private String errorMessage;
        private LocalDateTime createdAt;
    }
}