package main

import (
	"encoding/json"
	"fmt"
	"net/http"
	"os"
	"os/exec"
	"time"
)

func downloadNetworkLog(w http.ResponseWriter, r *http.Request) {
	if r.Method != http.MethodGet {
		http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
		return
	}

	filename := fmt.Sprintf("network.log.%s.tar.gz", time.Now().Format("20060102150405"))
	tmpFile := fmt.Sprintf("/tmp/%d.tar.gz", time.Now().UnixNano())

	defer os.Remove(tmpFile)

	cmd := exec.Command(
		"tar",
		"--warning=no-file-changed",
		"-czf",
		tmpFile,
		"-C",
		"/opt/yfkj/networkd.service/log",
		".",
	)

	out, err := cmd.CombinedOutput()
	if err != nil {
		if exitErr, ok := err.(*exec.ExitError); !ok || exitErr.ExitCode() != 1 {
			http.Error(w, string(out), http.StatusInternalServerError)
			return
		}
	}

	w.Header().Set("Content-Type", "application/gzip")
	w.Header().Set("Content-Disposition", fmt.Sprintf(`attachment; filename="%s"`, filename))

	http.ServeFile(w, r, tmpFile)
}

func restartNetworkService(w http.ResponseWriter, r *http.Request) {
	if r.Method != http.MethodPost {
		http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
		return
	}

	cmd := exec.Command("systemctl", "restart", "yfkj-networkd.service")

	if out, err := cmd.CombinedOutput(); err != nil {
		http.Error(w, string(out)+err.Error(), http.StatusInternalServerError)
		return
	}

	w.Header().Set("Content-Type", "application/json")
	w.Write([]byte(`{"status":"ok"}`))
}

func networkStatusHandler(w http.ResponseWriter, r *http.Request) {
	var modem struct {
		ICCID string `json:"iccid"`
		RSSI  string `json:"rssi"`
	}
	var net struct {
		Status string `json:"net_ok"`
		Type   string `json:"net_type"`
	}

	err1 := callRPCResult(r.Context(), 7000, "core.getNetStatus", nil, &net)
	err2 := callRPCResult(r.Context(), 7000, "core.getModemInfo", nil, &modem)

	netType := map[string]string{
		"有线": "🌐有线",
		"蜂窝": "📶蜂窝",
	}[net.Type]

	if netType == "" {
		netType = noValue
	}

	rssi := modem.RSSI
	if rssi == "" {
		rssi = noValue
	} else {
		rssi = "📶" + rssi
	}

	iccid := modem.ICCID
	if iccid == "" {
		iccid = noValue
	} else {
		iccid = "🔖" + iccid
	}

	w.Header().Set("Content-Type", "application/json; charset=utf-8")
	json.NewEncoder(w).Encode(map[string]string{
		"var1": map[bool]string{true: "🟢正常", false: noValue}[err1 == nil || err2 == nil],
		"var2": map[bool]string{true: "🟢正常", false: noValue}[net.Status == "true"],
		"var3": netType,
		"var4": rssi,
		"var5": iccid,
	})
}