package maker

import (
	"context"
	"os"
	"path/filepath"

	"yizhisec.com/hsv2/forge/pkg/archiver"
	"yizhisec.com/hsv2/forge/pkg/logger"
	"yizhisec.com/hsv2/forge/pkg/resource"
)

func (m *maker) HSNet(ctx context.Context) error {
	const (
		_service = `[Unit]
Description=hs-net Container Service
Documentation=https://docs.containerd.io
After=network.target containerd.service

[Service]
# 启动前清理旧容器
ExecStartPre=-/usr/local/bin/k0s ctr -n hs-net task kill hs-net
ExecStartPre=-/usr/local/bin/k0s ctr namespace create hs-net
ExecStartPre=-/usr/local/bin/k0s ctr -n hs-net container rm  hs-net

# 拉取最新镜像（按需启用/注释）
# ExecStartPre=/usr/local/bin/k0s ctr -n hs-net images pull hub.yizhisec.com/hybridscope/hsnet:release_2.1.0-std

# 容器启动命令
ExecStart=/usr/local/bin/k0s ctr -n hs-net run \
  --net-host \
  --privileged \
  --env LD_LIBRARY_PATH=/yizhisec/hs_net \
  --env RUST_BACKTRACE=1 \
  --mount type=bind,src=/etc/localtime,dst=/etc/localtime,options=rbind:ro \
  --mount type=bind,src=/etc/hosts,dst=/etc/hosts,options=rbind:ro \
  --mount type=bind,src=/etc/yizhisec,dst=/etc/yizhisec,options=rbind:rw \
  --mount type=bind,src=/tmp,dst=/tmp,options=rbind:rw \
  --mount type=bind,src=/etc/yosguard/uuid,dst=/etc/gateway/uuid.json,options=rbind:ro \
  --mount type=bind,src=/mnt/huge,dst=/mnt/huge,options=rbind:rw \
  --mount type=bind,src=/var/run,dst=/var/run,options=rbind:rw \
  --mount type=bind,src=/yizhisec,dst=/yizhisec,options=rbind:rw \
  --mount type=bind,src=/yizhisec/hs_net/conf,dst=/etc/hs_net,options=rbind:rw \
  hub.yizhisec.com/hybridscope/hsnet:release_2.1.0-std hs-net

# --cgroup host \
# --env RUSTFLAGS="-C target-cpu=nehalem" \
# 重启策略
Restart=always
RestartSec=5s

# 资源限制（按需调整）
MemoryLimit=2G
CPUQuota=80%

# 日志处理（将容器 stdout/stderr 交由 journald 管理）
StandardOutput=journal
StandardError=journal
SyslogIdentifier=hs-net

# 清理退出的容器
ExecStop=/usr/local/bin/k0s ctr -n hs-net task kill hs-net
ExecStopPost=/usr/local/bin/k0s ctr -n hs-net container rm hs-net

[Install]
WantedBy=multi-user.target`
		_conf_out = `log:
  level: info
controller:
  protocol: https
  registerHost: hs-gateway-register-controller
  host: hs-gateway-controller
  port: 443
  tokenFilePath: /etc/yizhisec/token
  registerRetry: 30
wg:
  private_key: qPfOaNKrV11kzaGQiNQNyiu6wMQGUpIM+/xqboVAnng=
  private_network: 246.0.0.1/8
  listen_port: 23209
  mtu: 1300
  obf_key: 0
  keep_alive: 61
  tun_name: wg_tun
yosGuard:
  host: __ip__
  port: 7788
mqtt:
  protocol: tls
  host: mqtt.yizhisec.com
  port: '443'
  cert: /yizhisec/hs_net/conf/ssl/mqtt.client.crt
  key: /yizhisec/hs_net/conf/ssl/mqtt.client.key
  keep_alive: 60
paseto_key: TtKVnSzEHO3jRv/GWg3f5k3H1OVfMnPZ1Ke9E6MSCXk=
resource_server: hs-gateway-controller
dns_cache:
  Address: 127.0.0.1:9028
gatewayVersionFile: /etc/yizhisec/gateway_version.json
lastVersion: null
workDir: /yizhisec/hs_net/workspace
eth_names: []
tag: ''
cluster_mock: ''
openobserve_uri: ''
tcp_mode_disable: false
`
		_conf_in = `{
  "LogLevel": "info",
  "LogFile": "/yizhisec/hs_net/workspace/log/wireguard",
  "DnsVirtNetwork": null,
  "DnsVirtNetworkV6": null,
  "Foreground": false,
  "WithPprof": false,
  "DnsCache": {
    "Address": "127.0.0.1:9028"
  },
  "log": {
    "level": "info"
  },
  "yosGuard": {
    "host": "__ip__",
    "port": 7788
  },
  "controller": {
    "protocol": "https",
    "host": "hs-gateway-controller",
    "registerHost": "hs-gateway-register-controller",
    "port": 443,
    "registerRetry": 30,
    "tokenFilePath": "/etc/yizhisec/token"
  },
  "wg": {
    "private_key": "qPfOaNKrV11kzaGQiNQNyiu6wMQGUpIM+/xqboVAnng=",
    "private_network": "246.0.0.1/8",
    "listen_port": 23209,
    "mtu": 1380,
    "obf_key": 0,
    "keep_alive": 60,
    "tun_name": "wg_tun"
  },
  "mqtt": {
    "protocol": "tls",
    "host": "mqtt.yizhisec.com",
    "port": 443,
    "cert": "/yizhisec/hs_net/conf/ssl/mqtt.client.crt",
    "key": "/yizhisec/hs_net/conf/ssl/mqtt.client.key",
    "keep_alive": 60
  },
  "paseto_key": "TtKVnSzEHO3jRv/GWg3f5k3H1OVfMnPZ1Ke9E6MSCXk=",
  "resource_server": "hs-gateway-controller",
  "gatewayVersionFile": "/etc/yizhisec/gateway_version.json",
  "lastVersion": null,
  "workDir": "/yizhisec/hs_net/workspace",
  "dns_cache": {
    "Address": "127.0.0.1:9028"
  }
}
`

		_url = "https://artifactory.yizhisec.com/artifactory/yizhisec-release/hs_net/release/2.1.0-std/package.tar.gz"
	)
	var (
		err     error
		workdir = filepath.Join(m.workdir, "dependency", "hs_net")
	)

	logger.Info("☑️ MakeHSNet: 开始构建 hs-net, workdir = %s", workdir)

	_ = os.RemoveAll(workdir)
	if err = os.MkdirAll(workdir, 0755); err != nil {
		logger.Debug("❌ MakeHSNet: 创建目录失败: %s", err.Error())
		return err
	}

	// {Name: "", Fallback: "", Save: "app.less_dns.tar", Force: true},
	imgName := "hub.yizhisec.com/hybridscope/hsnet:release_2.1.0-std"
	logger.Debug("☑️ maker.HSNet: start pull image = %s", imgName)
	if err = m.Image(ctx, imgName,
		WithImageForcePull(true),
		WithImageSave(filepath.Join(workdir, "hsnet.tar")),
	); err != nil {
		logger.Debug("❌ maker.HSNet: 拉取镜像失败: %v", err)
		return err
	}
	logger.Debug("✅ maker.HSNet: pull image success = %s", imgName)

	imgName = "hub.yizhisec.com/hybridscope/less_dns_service:latest"
	logger.Debug("☑️ maker.HSNet: start pull image = %s", imgName)
	if err = m.Image(ctx, imgName,
		WithImageForcePull(true),
		WithImageSave(filepath.Join(workdir, "less-dns.tar")),
	); err != nil {
		logger.Debug("❌ maker.HSNet: 拉取镜像失败: %v", err)
		return err
	}
	logger.Debug("✅ maker.HSNet: pull image success = %s", imgName)

	if err = archiver.DownloadAndExtract(ctx, _url, workdir); err != nil {
		logger.Debug("❌ MakeHSNet: 下载和解压失败: %s", err.Error())
		return err
	}

	// mv workdir/package/server workdir/
	// mv workdir/package/server_aes workdir/
	if err = os.Rename(filepath.Join(workdir, "package", "server"), filepath.Join(workdir, "server")); err != nil {
		logger.Debug("❌ MakeHSNet: 重命名文件失败: %s", err.Error())
		return err
	}
	if err = os.Rename(filepath.Join(workdir, "package", "server_aes"), filepath.Join(workdir, "server_aes")); err != nil {
		logger.Debug("❌ MakeHSNet: 重命名文件失败: %s", err.Error())
		return err
	}

	// write down conf_out to server.conf
	if err = os.WriteFile(filepath.Join(workdir, "server.conf"), []byte(_conf_out), 0644); err != nil {
		logger.Debug("❌ MakeHSNet: 写入配置文件失败: %s", err.Error())
		return err
	}

	// write down conf_in to conf/server.conf
	if err = os.MkdirAll(filepath.Join(workdir, "conf", "ssl"), 0755); err != nil {
		logger.Debug("❌ MakeHSNet: 创建目录失败: %s", err.Error())
		return err
	}
	if err = os.WriteFile(filepath.Join(workdir, "conf", "server.conf"), []byte(_conf_in), 0644); err != nil {
		logger.Debug("❌ MakeHSNet: 写入配置文件失败: %s", err.Error())
		return err
	}

	// write resource.SSLMQTTClientCrt
	if err = os.WriteFile(filepath.Join(workdir, "conf", "ssl", "mqtt.client.crt"), resource.SSLMQTTClientCrt, 0644); err != nil {
		logger.Debug("❌ MakeHSNet: 写入配置文件失败: %s", err.Error())
		return err
	}
	if err = os.WriteFile(filepath.Join(workdir, "conf", "ssl", "mqtt.client.key"), resource.SSLMQTTClientKey, 0644); err != nil {
		logger.Debug("❌ MakeHSNet: 写入配置文件失败: %s", err.Error())
		return err
	}

	// mkdir workspace
	if err = os.MkdirAll(filepath.Join(workdir, "workspace"), 0755); err != nil {
		logger.Debug("❌ MakeHSNet: 创建目录失败: %s", err.Error())
		return err
	}

	// new empty file lastVersion.txt
	if err = os.WriteFile(filepath.Join(workdir, "lastVersion.txt"), []byte{}, 0644); err != nil {
		logger.Debug("❌ MakeHSNet: 创建空文件失败: %s", err.Error())
		return err
	}

	// write hs-net.service
	if err = os.WriteFile(filepath.Join(workdir, "hs-net.service"), []byte(_service), 0644); err != nil {
		logger.Debug("❌ MakeHSNet: 写入服务文件失败: %s", err.Error())
		return err
	}

	// upsert.sh script
	const _upsert = `#!/bin/bash

set -e

echo "Starting hs-net deployment..."

# 1. Copy token file
echo "Copying token file..."
mkdir -p /etc/yizhisec
cp ../../configmap/token /etc/yizhisec/token
echo "Token file copied successfully"

# 2. Get local IP address
echo "Detecting local IP address..."
LocalIP=$(ip route get 1.1.1.1 | grep -oP 'src \K\S+')
if [ -z "$LocalIP" ]; then
    echo "Error: Failed to detect local IP address"
    exit 1
fi
echo "Local IP detected: $LocalIP"

# 3. Update /etc/hosts with required entries
echo "Updating /etc/hosts..."
for host in "hs-gateway-register-controller" "hs-gateway-controller" "mqtt.yizhisec.com"; do
    if grep -q "$host" /etc/hosts; then
        sed -i "/$host/d" /etc/hosts
    fi
    echo "$LocalIP $host" >> /etc/hosts
    echo "Added: $LocalIP $host"
done
echo "/etc/hosts updated successfully"

# 4. Replace __ip__ in server.conf
echo "Updating server.conf..."
sed -i "s/__ip__/$LocalIP/g" server.conf
echo "server.conf updated successfully"

# 5. Replace __ip__ in conf/server.conf
echo "Updating conf/server.conf..."
sed -i "s/__ip__/$LocalIP/g" conf/server.conf
echo "conf/server.conf updated successfully"

# 6. Create /mnt/huge directory
echo "Creating /mnt/huge directory..."
mkdir -p /mnt/huge
echo "/mnt/huge directory created successfully"

# 7. Create workspace directories
echo "Creating workspace directories..."
mkdir -p /yizhisec/hs_net/workspace/log
mkdir -p /yizhisec/hs_net/conf
echo "Workspace directories created successfully"

# 8. Copy configuration files
echo "Copying configuration files..."
cp -r conf/* /yizhisec/hs_net/conf/
echo "Configuration files copied successfully"

# 9. Copy binaries based on CPU AVX support
echo "Detecting CPU AVX support..."
if grep -q avx /proc/cpuinfo; then
    echo "AVX support detected, using server_aes"
    cp server_aes /yizhisec/hs_net/server
    chmod +x /yizhisec/hs_net/server
    echo "server_aes copied to /yizhisec/hs_net/server with execute permission"
else
    echo "AVX not supported, using server"
    cp server /yizhisec/hs_net/server
    chmod +x /yizhisec/hs_net/server
    echo "server copied to /yizhisec/hs_net/server with execute permission"
fi
echo "Binary copied successfully"

# 10. Copy lastVersion.txt
echo "Copying lastVersion.txt..."
cp lastVersion.txt /yizhisec/hs_net/
echo "lastVersion.txt copied successfully"

# 11. Load container image
echo "Loading hs-net container image..."
k0s ctr -n hs-net images import hs-net.tar
echo "Container image loaded successfully"

# 12. Install and enable systemd service
echo "Installing hs-net systemd service..."
cp hs-net.service /etc/systemd/system/
systemctl daemon-reload
systemctl enable hs-net.service
echo "hs-net service installed and enabled"

# 13. Start the service
echo "Starting hs-net service..."
systemctl restart hs-net.service
echo "hs-net service started successfully"

echo "hs-net deployment completed successfully!"
echo "You can check the service status with: systemctl status hs-net.service"
`

	// Write upsert.sh
	logger.Debug("☑️ MakeHSNet: 写入 upsert.sh 脚本...")
	if err = os.WriteFile(filepath.Join(workdir, "upsert.sh"), []byte(_upsert), 0755); err != nil {
		logger.Debug("❌ MakeHSNet: 写入 upsert.sh 失败: %s", err.Error())
		return err
	}
	logger.Debug("✅ MakeHSNet: 写入 upsert.sh 成功")

	logger.Info("✅ MakeHSNet: 构建 hs-net 成功, workdir = %s", workdir)

	return nil
}