package clusters

import (
	"encoding/json"
	"strconv"
	"strings"

	"github.com/TeaOSLab/EdgeAdmin/internal/web/actions/actionutils"
	"github.com/TeaOSLab/EdgeAdmin/internal/web/actions/default/httpdns/httpdnsutils"
	"github.com/TeaOSLab/EdgeCommon/pkg/rpc/pb"
	"github.com/TeaOSLab/EdgeCommon/pkg/serverconfigs"
	"github.com/TeaOSLab/EdgeCommon/pkg/serverconfigs/sslconfigs"
	"github.com/TeaOSLab/EdgeCommon/pkg/systemconfigs"
	"github.com/iwind/TeaGo/actions"
	"github.com/iwind/TeaGo/maps"
	"github.com/iwind/TeaGo/types"
)

type ClusterSettingsAction struct {
	actionutils.ParentAction
}

func (this *ClusterSettingsAction) Init() {
	this.Nav("httpdns", "cluster", "settings")
}

func (this *ClusterSettingsAction) RunGet(params struct {
	ClusterId int64
	Section   string
}) {
	httpdnsutils.AddLeftMenu(this.Parent())

	cluster, err := findClusterMap(this.Parent(), params.ClusterId)
	if err != nil {
		this.ErrorPage(err)
		return
	}
	httpdnsutils.AddClusterTabbar(this.Parent(), cluster.GetString("name"), params.ClusterId, "setting")

	section := strings.TrimSpace(params.Section)
	if len(section) == 0 {
		section = "basic"
	}

	settings := maps.Map{
		"name":                   cluster.GetString("name"),
		"gatewayDomain":          cluster.GetString("gatewayDomain"),
		"cacheTtl":               cluster.GetInt("defaultTTL"),
		"fallbackTimeout":        cluster.GetInt("fallbackTimeout"),
		"installDir":             cluster.GetString("installDir"),
		"isOn":                   cluster.GetBool("isOn"),
		"isDefaultCluster":       cluster.GetBool("isDefault"),
		"isDefaultBackupCluster": false,
	}
	if settings.GetInt("cacheTtl") <= 0 {
		settings["cacheTtl"] = 30
	}
	if settings.GetInt("fallbackTimeout") <= 0 {
		settings["fallbackTimeout"] = 300
	}
	if len(settings.GetString("installDir")) == 0 {
		settings["installDir"] = "/opt/edge-httpdns"
	}

	defaultBackupResp, err := this.RPC().SysSettingRPC().ReadSysSetting(this.AdminContext(), &pb.ReadSysSettingRequest{
		Code: string(systemconfigs.SettingCodeHTTPDNSDefaultBackupClusterId),
	})
	if err != nil {
		this.ErrorPage(err)
		return
	}
	defaultBackupClusterId := int64(0)
	if defaultBackupResp != nil && len(defaultBackupResp.GetValueJSON()) > 0 {
		defaultBackupClusterId = types.Int64(string(defaultBackupResp.GetValueJSON()))
	}
	settings["isDefaultBackupCluster"] = defaultBackupClusterId == params.ClusterId

	listenAddresses := []*serverconfigs.NetworkAddressConfig{
		{
			Protocol:  serverconfigs.ProtocolHTTPS,
			Host:      "",
			PortRange: "443",
		},
	}
	sslPolicy := &sslconfigs.SSLPolicy{
		IsOn:       true,
		MinVersion: "TLS 1.1",
	}

	if rawTLS := strings.TrimSpace(cluster.GetString("tlsPolicyJSON")); len(rawTLS) > 0 {
		tlsConfig := maps.Map{}
		if err := json.Unmarshal([]byte(rawTLS), &tlsConfig); err == nil {
			if listenRaw := tlsConfig.Get("listen"); listenRaw != nil {
				if data, err := json.Marshal(listenRaw); err == nil {
					_ = json.Unmarshal(data, &listenAddresses)
				}
			}
			if sslRaw := tlsConfig.Get("sslPolicy"); sslRaw != nil {
				if data, err := json.Marshal(sslRaw); err == nil {
					_ = json.Unmarshal(data, sslPolicy)
				}
			}
		}
	}

	this.Data["activeSection"] = section
	cid := strconv.FormatInt(params.ClusterId, 10)
	this.Data["leftMenuItems"] = []map[string]interface{}{
		{"name": "基础设置", "url": "/httpdns/clusters/cluster/settings?clusterId=" + cid + "&section=basic", "isActive": section == "basic"},
		{"name": "TLS", "url": "/httpdns/clusters/cluster/settings?clusterId=" + cid + "&section=tls", "isActive": section == "tls"},
	}
	this.Data["cluster"] = cluster
	this.Data["settings"] = settings
	this.Data["tlsConfig"] = maps.Map{
		"isOn":      true,
		"listen":    listenAddresses,
		"sslPolicy": sslPolicy,
	}
	this.Show()
}

func (this *ClusterSettingsAction) RunPost(params struct {
	ClusterId              int64
	Name                   string
	GatewayDomain          string
	CacheTtl               int32
	FallbackTimeout        int32
	InstallDir             string
	IsOn                   bool
	IsDefaultCluster       bool
	IsDefaultBackupCluster bool

	Addresses     []byte
	SslPolicyJSON []byte

	Must *actions.Must
	CSRF *actionutils.CSRF
}) {
	params.Name = strings.TrimSpace(params.Name)
	params.GatewayDomain = strings.TrimSpace(params.GatewayDomain)
	params.InstallDir = strings.TrimSpace(params.InstallDir)

	params.Must.Field("clusterId", params.ClusterId).Gt(0, "请选择集群")
	params.Must.Field("name", params.Name).Require("请输入集群名称")
	params.Must.Field("gatewayDomain", params.GatewayDomain).Require("请输入服务域名")

	if params.CacheTtl <= 0 {
		params.CacheTtl = 30
	}
	if params.FallbackTimeout <= 0 {
		params.FallbackTimeout = 300
	}
	if len(params.InstallDir) == 0 {
		params.InstallDir = "/opt/edge-httpdns"
	}
	if params.IsDefaultCluster && !params.IsOn {
		this.Fail("默认主集群必须保持启用状态")
		return
	}
	if params.IsDefaultBackupCluster && !params.IsOn {
		this.Fail("默认备用集群必须保持启用状态")
		return
	}
	if params.IsDefaultCluster && params.IsDefaultBackupCluster {
		this.Fail("默认主集群和默认备用集群不能是同一个集群")
		return
	}

	cluster, err := findClusterMap(this.Parent(), params.ClusterId)
	if err != nil {
		this.ErrorPage(err)
		return
	}

	tlsConfig := maps.Map{}
	if rawTLS := strings.TrimSpace(cluster.GetString("tlsPolicyJSON")); len(rawTLS) > 0 {
		_ = json.Unmarshal([]byte(rawTLS), &tlsConfig)
	}

	if len(params.Addresses) > 0 {
		var addresses []*serverconfigs.NetworkAddressConfig
		if err := json.Unmarshal(params.Addresses, &addresses); err != nil {
			this.Fail("监听端口配置格式不正确")
			return
		}
		tlsConfig["listen"] = addresses
	}

	if len(params.SslPolicyJSON) > 0 {
		sslPolicy := &sslconfigs.SSLPolicy{}
		if err := json.Unmarshal(params.SslPolicyJSON, sslPolicy); err != nil {
			this.Fail("TLS 配置格式不正确")
			return
		}
		tlsConfig["sslPolicy"] = sslPolicy
	}

	var tlsPolicyJSON []byte
	if len(tlsConfig) > 0 {
		tlsPolicyJSON, err = json.Marshal(tlsConfig)
		if err != nil {
			this.ErrorPage(err)
			return
		}
	}

	_, err = this.RPC().HTTPDNSClusterRPC().UpdateHTTPDNSCluster(this.AdminContext(), &pb.UpdateHTTPDNSClusterRequest{
		ClusterId:         params.ClusterId,
		Name:              params.Name,
		ServiceDomain:     params.GatewayDomain,
		DefaultTTL:        params.CacheTtl,
		FallbackTimeoutMs: params.FallbackTimeout,
		InstallDir:        params.InstallDir,
		TlsPolicyJSON:     tlsPolicyJSON,
		IsOn:              params.IsOn,
		IsDefault:         params.IsDefaultCluster,
	})
	if err != nil {
		this.ErrorPage(err)
		return
	}

	backupClusterValue := int64(0)
	if params.IsDefaultBackupCluster {
		backupClusterValue = params.ClusterId
	} else {
		readResp, err := this.RPC().SysSettingRPC().ReadSysSetting(this.AdminContext(), &pb.ReadSysSettingRequest{
			Code: string(systemconfigs.SettingCodeHTTPDNSDefaultBackupClusterId),
		})
		if err != nil {
			this.ErrorPage(err)
			return
		}
		if readResp != nil && len(readResp.GetValueJSON()) > 0 {
			oldBackupClusterId := types.Int64(string(readResp.GetValueJSON()))
			if oldBackupClusterId != params.ClusterId {
				backupClusterValue = oldBackupClusterId
			}
		}
	}

	_, err = this.RPC().SysSettingRPC().UpdateSysSetting(this.AdminContext(), &pb.UpdateSysSettingRequest{
		Code:      string(systemconfigs.SettingCodeHTTPDNSDefaultBackupClusterId),
		ValueJSON: []byte(strconv.FormatInt(backupClusterValue, 10)),
	})
	if err != nil {
		this.ErrorPage(err)
		return
	}

	this.Success()
}