package com.srsystem.controller;

import com.srsystem.entity.SystemConfig;
import com.srsystem.repository.SystemConfigRepository;
import com.srsystem.dto.ApiResponse;
import lombok.RequiredArgsConstructor;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.web.bind.annotation.*;

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

@RestController
@RequestMapping("/api/v1/admin/config")
@PreAuthorize("hasRole('ADMIN')")
@RequiredArgsConstructor
public class SystemConfigController {

    private final SystemConfigRepository repository;

    @GetMapping
    public ApiResponse<List<SystemConfig>> getAll() {
        return ApiResponse.ok(repository.findAll());
    }

    @GetMapping("/{key}")
    public ApiResponse<SystemConfig> getByKey(@PathVariable String key) {
        return repository.findByConfigKey(key)
                .map(ApiResponse::ok)
                .orElse(ApiResponse.error("설정을 찾을 수 없습니다: " + key));
    }

    @PutMapping("/{key}")
    public ApiResponse<SystemConfig> update(@PathVariable String key, @RequestBody Map<String, String> body) {
        String value = body.get("configValue");
        if (value == null) {
            return ApiResponse.error("configValue가 필요합니다.");
        }
        SystemConfig config = repository.findByConfigKey(key).orElse(null);
        if (config == null) {
            config = SystemConfig.builder().configKey(key).createdAt(LocalDateTime.now()).build();
        }
        config.setConfigValue(value);
        config.setUpdatedAt(LocalDateTime.now());
        return ApiResponse.ok(repository.save(config));
    }

    @PutMapping("/batch")
    public ApiResponse<List<SystemConfig>> batchUpdate(@RequestBody Map<String, String> entries) {
        entries.forEach((k, v) -> {
            SystemConfig config = repository.findByConfigKey(k).orElse(null);
            if (config == null) {
                config = SystemConfig.builder().configKey(k).createdAt(LocalDateTime.now()).build();
            }
            config.setConfigValue(v);
            config.setUpdatedAt(LocalDateTime.now());
            repository.save(config);
        });
        return ApiResponse.ok(repository.findAll());
    }
}