package com.battery.device.api.registry;

import java.time.ZoneId;
import java.util.Locale;
import java.util.Map;
import java.util.Objects;
import com.battery.device.api.model.AdapterCapabilities;

/** 设备适配器实例的运行时配置。 */
public record AdapterInstanceConfig(
        String adapterCode,
        String adapterType,
        String host,
        int port,
        int pollIntervalMs,
        String timezoneId,
        boolean enabled,
        AdapterCapabilities capabilities,
        Map<String, String> sourceConfig)
{
    /**
     * 来源形态配置按存储形态互不相交，只承载非敏感项；连接口令由环境变量或启动参数提供，不下沉到数据库。
     */
    public AdapterInstanceConfig
    {
        adapterCode = requireText(adapterCode, "adapterCode");
        adapterType = requireText(adapterType, "adapterType").toUpperCase(Locale.ROOT);
        host = requireText(host, "host");
        timezoneId = requireText(timezoneId, "timezoneId");
        capabilities = Objects.requireNonNull(capabilities, "capabilities");
        sourceConfig = sourceConfig == null ? Map.of() : Map.copyOf(sourceConfig);
        if (port < 1 || port > 65535) throw new IllegalArgumentException("port must be between 1 and 65535");
        if (pollIntervalMs < 1) throw new IllegalArgumentException("pollIntervalMs must be positive");
        ZoneId.of(timezoneId);
        if (!capabilities.discovery() || capabilities.control())
            throw new IllegalArgumentException("MVP adapter must support discovery and remain read-only");
    }

    /** 兼容不含来源形态配置的既有装配。 */
    public AdapterInstanceConfig(String adapterCode, String adapterType, String host, int port, int pollIntervalMs,
            String timezoneId, boolean enabled, AdapterCapabilities capabilities)
    {
        this(adapterCode, adapterType, host, port, pollIntervalMs, timezoneId, enabled, capabilities, Map.of());
    }

    /** 读取来源形态的非敏感配置项；缺少该项时返回空值，是否必需由适配器决定。 */
    public String sourceOption(String key)
    {
        return sourceConfig.get(key);
    }

    private static String requireText(String value, String field)
    {
        String normalized = Objects.requireNonNull(value, field).trim();
        if (normalized.isEmpty()) throw new IllegalArgumentException(field + " must not be blank");
        return normalized;
    }
}