import { app, ipcMain } from "electron";
import { Config, getConfig } from "../storage/config";
import { listProxy } from "../storage/proxy";
import { getVersionById } from "../storage/version";

const fs = require("fs");
const path = require("path");

const { exec, spawn } = require("child_process");
export let frpcProcess = null;

const runningCmd = {
  commandPath: null,
  configPath: null
};

// const getFrpc = (config: Config) => {
//   getVersionById(config.currentVersion, (err, document) => {
//     if (!err) {
//     }
//   });
// };

/**
 * 获取选择版本的工作目录
 * @param versionId 版本ID
 * @param callback
 */
const getFrpcVersionWorkerPath = (
  versionId: string,
  callback: (workerPath: string) => void
) => {
  getVersionById(versionId, (err2, version) => {
    if (!err2) {
      callback(version["frpcVersionPath"]);
    }
  });
};

/**
 * 生成配置文件
 */
export const generateConfig = (
  config: Config,
  callback: (configPath: string) => void
) => {
  listProxy((err3, proxys) => {
    if (!err3) {
      const proxyToml = proxys.map(m => {
        let toml = `
[[proxies]]
name = "${m.name}"
type = "${m.type}"
localIP = "${m.localIp}"
localPort = ${m.localPort}
`;
        switch (m.type) {
          case "tcp":
            toml += `remotePort = ${m.remotePort}`;
            break;
          case "http":
          case "https":
            toml += `customDomains=[${m.customDomains.map(m => `"${m}"`)}]`;
            break;
          default:
            break;
        }

        return toml;
      });
      let toml = `
serverAddr = "${config.serverAddr}"
serverPort = ${config.serverPort}
auth.method = "${config.authMethod}"
auth.token = "${config.authToken}"
log.to = "frpc.log"
log.level = "debug"
log.maxDays = 3
webServer.addr = "127.0.0.1"
webServer.port = 57400

${proxyToml}
      `;

      // const configPath = path.join("frp.toml");
      const filename = "frp.toml";
      fs.writeFile(
        path.join(app.getPath("userData"), filename), // 配置文件目录
        toml, // 配置文件内容
        { flag: "w" },
        err => {
          if (!err) {
            callback(filename);
          }
        }
      );
    }
  });
};

/**
 * 启动frpc子进程
 * @param cwd
 * @param commandPath
 * @param configPath
 */
const startFrpcProcess = (commandPath: string, configPath: string) => {
  const command = `${commandPath} -c ${configPath}`;
  frpcProcess = spawn(command, {
    cwd: app.getPath("userData"),
    shell: true
  });
  runningCmd.commandPath = commandPath;
  runningCmd.configPath = configPath;
  frpcProcess.stdout.on("data", data => {
    console.log(`命令输出: ${data}`);
  });
  frpcProcess.stdout.on("error", data => {
    console.log(`执行错误: ${data}`);
    frpcProcess.kill("SIGINT");
  });
};

export const reloadFrpcProcess = () => {
  if (frpcProcess && !frpcProcess.killed) {
    getConfig((err1, config) => {
      if (!err1) {
        if (config) {
          generateConfig(config, configPath => {
            const command = `${runningCmd.commandPath} reload -c ${configPath}`;
            console.log("重启", command);
            exec(command, {
              cwd: app.getPath("userData"),
              shell: true
            });
          });
        }
      }
    });
  }
};

export const initFrpcApi = () => {
  ipcMain.handle("frpc.running", async (event, args) => {
    if (!frpcProcess) {
      return false;
    } else {
      return !frpcProcess.killed;
    }
  });

  ipcMain.on("frpc.start", async (event, args) => {
    getConfig((err1, config) => {
      if (!err1) {
        if (config) {
          getFrpcVersionWorkerPath(
            config.currentVersion,
            (frpcVersionPath: string) => {
              generateConfig(config, configPath => {
                startFrpcProcess(
                  path.join(frpcVersionPath, "frpc"),
                  configPath
                );
              });
            }
          );
        } else {
          event.reply(
            "Home.frpc.start.error.hook",
            "请先前往设置页面，修改配置后再启动"
          );
        }
      }
    });
  });

  ipcMain.on("frpc.stop", () => {
    if (frpcProcess && !frpcProcess.killed) {
      console.log("关闭");
      frpcProcess.kill();
    }
  });
};