package com.xcong.excoin.modules.gateApi;

import java.math.BigDecimal;

/**
 * Gate 模块统一配置。
 *
 * <p>通过 Builder 模式集中管理所有运行参数，避免参数散落在多个文件中。
 * 提供 REST API 和 WebSocket 地址的自动环境切换（测试网/生产网）。
 *
 * <h3>使用示例</h3>
 * <pre>
 *   GateConfig config = GateConfig.builder()
 *       .apiKey("...")
 *       .apiSecret("...")
 *       .contract("XAU_USDT")
 *       .leverage("100")
 *       .gridRate(new BigDecimal("0.0035"))
 *       .contractMultiplier("0.001")
 *       .isProduction(false)
 *       .build();
 *
 *   String restUrl = config.getRestBasePath();  // 自动返回测试网或生产网地址
 *   String wsUrl   = config.getWsUrl();
 * </pre>
 *
 * <h3>默认值</h3>
 * <ul>
 *   <li>合约: BTC_USDT, 杠杆: 10x, 全仓, 双向持仓</li>
 *   <li>网格间距: 0.35%, 队列容量: 50, 保证金比例上限: 20%</li>
 *   <li>止盈: 0.5 USDT, 亏损上限: 7.5 USDT</li>
 *   <li>数量: 1 张, 合约乘数: 0.001, 环境: 测试网</li>
 * </ul>
 *
 * @author Administrator
 */
public class GateConfig {

    /** 未实现盈亏计价模式 */
    public enum PnLPriceMode {
        /** 按最新成交价计算 */
        LAST_PRICE,
        /** 按标记价格计算 */
        MARK_PRICE
    }

    /** 账号标签（用于日志区分多账号） */
    private final String label;
    /** Gate API v4 密钥 */
    private final String apiKey;
    /** Gate API v4 签名密钥 */
    private final String apiSecret;
    /** 合约名称（如 XAU_USDT） */
    private final String contract;
    /** 杠杆倍数 */
    private final String leverage;
    /** 保证金模式（cross / isolated） */
    private final String marginMode;
    /** 持仓模式（single / dual / dual_plus） */
    private final String positionMode;
    /** 网格间距比例（如 0.0035 表示 0.35%） */
    private final BigDecimal gridRate;
    /** 整体止盈阈值（USDT） */
    private final BigDecimal overallTp;
    /** 最大亏损阈值（USDT） */
    private final BigDecimal maxLoss;
    /** 下单数量（合约张数） */
    private final String quantity;
    /** 是否为生产环境 */
    private final boolean isProduction;
    /** 补仓最大重试次数 */
    private final int reopenMaxRetries;
    /** 网格队列容量 */
    private final int gridQueueSize;
    /** 保证金占初始本金比例上限 */
    private final BigDecimal marginRatioLimit;
    /** 合约乘数（单张合约代表的基础资产数量，如 BTC_USDT=0.001, ETH_USDT=0.01） */
    private final BigDecimal contractMultiplier;
    /** 未实现盈亏计价模式：最新价 / 标记价格 */
    private final PnLPriceMode unrealizedPnlPriceMode;

    private GateConfig(Builder builder) {
        this.label = builder.label;
        this.apiKey = builder.apiKey;
        this.apiSecret = builder.apiSecret;
        this.contract = builder.contract;
        this.leverage = builder.leverage;
        this.marginMode = builder.marginMode;
        this.positionMode = builder.positionMode;
        this.gridRate = builder.gridRate;
        this.overallTp = builder.overallTp;
        this.maxLoss = builder.maxLoss;
        this.quantity = builder.quantity;
        this.isProduction = builder.isProduction;
        this.reopenMaxRetries = builder.reopenMaxRetries;
        this.gridQueueSize = builder.gridQueueSize;
        this.marginRatioLimit = builder.marginRatioLimit;
        this.contractMultiplier = builder.contractMultiplier;
        this.unrealizedPnlPriceMode = builder.unrealizedPnlPriceMode;
    }

    /**
     * 根据环境返回 REST API 基础路径。
     * <ul>
     *   <li>测试网: {@code https://api-testnet.gateapi.io/api/v4}</li>
     *   <li>生产网: {@code https://api.gateio.ws/api/v4}</li>
     * </ul>
     */
    public String getRestBasePath() {
        return isProduction
                ? "https://api.gateio.ws/api/v4"
                : "https://api-testnet.gateapi.io/api/v4";
    }

    /**
     * 根据环境返回 WebSocket 地址。
     * <ul>
     *   <li>测试网: {@code wss://ws-testnet.gate.com/v4/ws/futures/usdt}</li>
     *   <li>生产网: {@code wss://fx-ws.gateio.ws/v4/ws/usdt}</li>
     * </ul>
     */
    public String getWsUrl() {
        return isProduction
                ? "wss://fx-ws.gateio.ws/v4/ws/usdt"
                : "wss://ws-testnet.gate.com/v4/ws/futures/usdt";
    }

    public String getLabel() { return label; }
    public String getApiKey() { return apiKey; }
    public String getApiSecret() { return apiSecret; }
    public String getContract() { return contract; }
    public String getLeverage() { return leverage; }
    public String getMarginMode() { return marginMode; }
    public String getPositionMode() { return positionMode; }
    public BigDecimal getGridRate() { return gridRate; }
    public BigDecimal getOverallTp() { return overallTp; }
    public BigDecimal getMaxLoss() { return maxLoss; }
    public String getQuantity() { return quantity; }
    public boolean isProduction() { return isProduction; }
    public int getReopenMaxRetries() { return reopenMaxRetries; }
    public int getGridQueueSize() { return gridQueueSize; }
    public BigDecimal getMarginRatioLimit() { return marginRatioLimit; }
    public BigDecimal getContractMultiplier() { return contractMultiplier; }
    public PnLPriceMode getUnrealizedPnlPriceMode() { return unrealizedPnlPriceMode; }

    public static Builder builder() {
        return new Builder();
    }

    /**
     * GateConfig 的流式构造器，提供合理的默认值。
     */
    public static class Builder {
        private String label = "default";
        private String apiKey;
        private String apiSecret;
        private String contract = "BTC_USDT";
        private String leverage = "10";
        private String marginMode = "cross";
        private String positionMode = "dual";
        private BigDecimal gridRate = new BigDecimal("0.0035");
        private BigDecimal overallTp = new BigDecimal("0.5");
        private BigDecimal maxLoss = new BigDecimal("7.5");
        private String quantity = "1";
        private boolean isProduction = false;
        private int reopenMaxRetries = 3;
        private int gridQueueSize = 50;
        private BigDecimal marginRatioLimit = new BigDecimal("0.2");
        private BigDecimal contractMultiplier = new BigDecimal("0.001");
        private PnLPriceMode unrealizedPnlPriceMode = PnLPriceMode.LAST_PRICE;

        public Builder label(String label) { this.label = label; return this; }
        public Builder apiKey(String apiKey) { this.apiKey = apiKey; return this; }
        public Builder apiSecret(String apiSecret) { this.apiSecret = apiSecret; return this; }
        public Builder contract(String contract) { this.contract = contract; return this; }
        public Builder leverage(String leverage) { this.leverage = leverage; return this; }
        public Builder marginMode(String marginMode) { this.marginMode = marginMode; return this; }
        public Builder positionMode(String positionMode) { this.positionMode = positionMode; return this; }
        public Builder gridRate(BigDecimal gridRate) { this.gridRate = gridRate; return this; }
        public Builder overallTp(BigDecimal overallTp) { this.overallTp = overallTp; return this; }
        public Builder maxLoss(BigDecimal maxLoss) { this.maxLoss = maxLoss; return this; }
        public Builder quantity(String quantity) { this.quantity = quantity; return this; }
        public Builder isProduction(boolean isProduction) { this.isProduction = isProduction; return this; }
        public Builder reopenMaxRetries(int reopenMaxRetries) { this.reopenMaxRetries = reopenMaxRetries; return this; }
        public Builder contractMultiplier(BigDecimal contractMultiplier) { this.contractMultiplier = contractMultiplier; return this; }
        public Builder unrealizedPnlPriceMode(PnLPriceMode mode) { this.unrealizedPnlPriceMode = mode; return this; }

        public GateConfig build() {
            return new GateConfig(this);
        }
    }
}