"use strict";

/**
 * 华为 / H3C 交换机采集器
 *
 * 采集指标：
 *   - cpu_usage      CPU 使用率（%）
 *   - memory_usage   内存使用率（%）
 *   - port_status    端口状态 { up_count, down_count }
 *   - power_status   电源状态 { normal_count, abnormal_count }
 *   - fan_status     风扇状态
 *
 * 实现说明：
 *   使用批量命令执行，一次连接执行所有命令，避免 VTY 超时
 */

const BaseAdapter = require("./baseAdapter.cjs");

class HuaweiH3CSwitchAdapter extends BaseAdapter {
  constructor(connectionInfo, options = {}) {
    super(connectionInfo, options);
    this.adapterName = "huawei_h3c_switch";
    if (options.execCommands) {
      this.execCommands = options.execCommands;
    }
  }

  async execCommands(commands, options = {}) {
    const { execSshCommands } = require("../inspectionExec.cjs");
    return await execSshCommands(this.connectionInfo, commands, options);
  }

  getSupportedMetrics() {
    return [
      "cpu_usage",
      "memory_usage",
      "port_status",
      "power_status",
      "fan_status",
    ];
  }

  async collectMetrics() {
    const metrics = {};
    const DEBUG = process.env.INSPECTION_DEBUG === "1";

    if (DEBUG) console.log("[HuaweiH3C] 开始采集交换机指标");

    const commands = [
      "display cpu-usage",
      "display memory",
      "display interface brief",
      "display power",
      "display fan",
    ];

    try {
      const { results } = await this.execCommands(commands, { timeoutMs: 180000 });

      if (DEBUG) {
        console.log("[HuaweiH3C] 原始输出:");
        for (let i = 0; i < results.length; i++) {
          // 简化日志，不输出完整原始数据
          const out = results[i]?.output || "";
          console.log(`[HuaweiH3C] 命令${i + 1}: ${commands[i]} → ${out.length} 字符`);
        }
      }

      if (results && results.length >= 5) {
        metrics.cpu_usage = this.parseCpuUsage(results[0]?.output || "");
        metrics.memory_usage = this.parseMemoryUsage(results[1]?.output || "");
        metrics.port_status = this.parsePorts(results[2]?.output || "");
        metrics.power_status = this.parsePower(results[3]?.output || "");
        metrics.fan_status = this.parseFan(results[4]?.output || "");
      }

      if (DEBUG) console.log("[HuaweiH3C] Final:", JSON.stringify(metrics));
    } catch (e) {
      if (DEBUG) console.log("[HuaweiH3C] Error:", e.message);
      throw e;
    }

    return metrics;
  }

  parseCpuUsage(output) {
    // H3C Comware 5/7: "7% in last 5 seconds"
    let m = output.match(/(\d+)\s*%\s*in\s+last\s+5\s+seconds/i);
    if (m) return parseFloat(m[1]);
    // 1 minute
    m = output.match(/(\d+)\s*%\s*in\s+last\s+1\s+minute/i);
    if (m) return parseFloat(m[1]);
    // 华为格式
    m = output.match(/CPU\s+Usage\s*:\s*(\d+)%/i);
    if (m) return parseFloat(m[1]);
    // 5 Seconds
    m = output.match(/5\s*Seconds\s*[:：]\s*(\d+)\s*%/i);
    if (m) return parseFloat(m[1]);
    return null;
  }

  parseMemoryUsage(output) {
    // H3C: "Used Rate: 45%"
    let m = output.match(/Used\s*Rate\s*[:：]?\s*(\d+(?:\.\d+)?)\s*%/i);
    if (m) return parseFloat(m[1]);
    // 华为/其他: "Memory Using Percentage Is: 21%"
    m = output.match(/Memory\s+Using\s+Percentage\s+Is\s*[:：]?\s*(\d+(?:\.\d+)?)\s*%/i);
    if (m) return parseFloat(m[1]);
    // H3C bytes 格式: "System Total Memory(bytes): 65546160" / "Total Used Memory(bytes): 29528544"
    const totalM = output.match(/System\s+Total\s+Memory\s*\(\s*bytes\s*\)\s*[:：]?\s*(\d+)/i);
    const usedM = output.match(/Total\s+Used\s+Memory\s*\(\s*bytes\s*\)\s*[:：]?\s*(\d+)/i);
    if (totalM && usedM) {
      const total = parseFloat(totalM[1]);
      const used = parseFloat(usedM[1]);
      if (total > 0) return Math.round((used / total) * 100 * 10) / 10;
    }
    // MB 格式: "Memory Size: xxx MB"
    const totalMB = output.match(/Memory\s*(?:Size|Total)\s*[:：]?\s*(\d+)\s*MB/i);
    const usedMB = output.match(/Memory\s*Used\s*[:：]?\s*(\d+)\s*MB/i);
    if (totalMB && usedMB) {
      const total = parseFloat(totalMB[1]);
      const used = parseFloat(usedMB[1]);
      if (total > 0) return Math.round((used / total) * 100 * 10) / 10;
    }
    return null;
  }

  parsePorts(output) {
    const lines = output.split("\n");
    let upCount = 0, downCount = 0;
    const ports = [];
    for (const line of lines) {
      // H3C 格式: "GE1/0/1       UP   100M(a)"
      // 匹配 GE开头 + UP/DOWN
      const geMatch = line.match(/^(GE\d+\/\d+\/\d+)\s+(UP|DOWN|up|down)/i);
      if (geMatch) {
        const phy = geMatch[2].toLowerCase();
        ports.push({ name: geMatch[1], phy });
        if (phy === "up") upCount++;
        else downCount++;
        continue;
      }
      // 匹配 GigabitEthernet 全称
      const gigMatch = line.match(/^(GigabitEthernet\d+[\d\/]+)\s+(UP|DOWN|up|down)/i);
      if (gigMatch) {
        const phy = gigMatch[2].toLowerCase();
        ports.push({ name: gigMatch[1], phy });
        if (phy === "up") upCount++;
        else downCount++;
      }
    }
    return { up_count: upCount, down_count: downCount, ports };
  }

  parsePower(output) {
    let normal = 0, abnormal = 0;
    for (const line of output.split("\n")) {
      if (/Normal|Supply|OK/i.test(line)) normal++;
      else if (/Absent|Fault|Error/i.test(line)) abnormal++;
    }
    return { normal_count: normal, abnormal_count: abnormal };
  }

  parseFan(output) {
    let normal = 0, abnormal = 0;
    for (const line of output.split("\n")) {
      if (/Normal|Auto|Running|OK/i.test(line)) normal++;
      else if (/Fault|Absent|Error/i.test(line)) abnormal++;
    }
    return { normal_count: normal, abnormal_count: abnormal };
  }
}

module.exports = HuaweiH3CSwitchAdapter;