// Copyright © 2023 OpenIM. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package cmd

import (
	"context"
	"encoding/json"
	"fmt"

	"git.imall.cloud/openim/open-im-server-deploy/internal/msggateway"
	"git.imall.cloud/openim/open-im-server-deploy/pkg/common/config"
	"git.imall.cloud/openim/open-im-server-deploy/pkg/common/startrpc"
	"git.imall.cloud/openim/open-im-server-deploy/version"

	"github.com/openimsdk/tools/log"
	"github.com/openimsdk/tools/system/program"
	"github.com/spf13/cobra"
)

type MsgGatewayCmd struct {
	*RootCmd
	ctx              context.Context
	configMap        map[string]any
	msgGatewayConfig *msggateway.Config
}

func NewMsgGatewayCmd() *MsgGatewayCmd {
	var msgGatewayConfig msggateway.Config
	ret := &MsgGatewayCmd{msgGatewayConfig: &msgGatewayConfig}
	ret.configMap = map[string]any{
		config.OpenIMMsgGatewayCfgFileName: &msgGatewayConfig.MsgGateway,
		config.ShareFileName:               &msgGatewayConfig.Share,
		config.RedisConfigFileName:         &msgGatewayConfig.RedisConfig,
		config.WebhooksConfigFileName:      &msgGatewayConfig.WebhooksConfig,
		config.DiscoveryConfigFilename:     &msgGatewayConfig.Discovery,
	}
	ret.RootCmd = NewRootCmd(program.GetProcessName(), WithConfigMap(ret.configMap))
	ret.ctx = context.WithValue(context.Background(), "version", version.Version)
	ret.Command.RunE = func(cmd *cobra.Command, args []string) error {
		return ret.runE()
	}
	return ret
}

func (m *MsgGatewayCmd) Exec() error {
	return m.Execute()
}

func (m *MsgGatewayCmd) runE() error {
	m.msgGatewayConfig.Index = config.Index(m.Index())
	rpc := m.msgGatewayConfig.MsgGateway.RPC
	// 从配置读取 Prometheus，避免空配置导致的下标越界
	prometheus := m.msgGatewayConfig.MsgGateway.Prometheus

	b, err := json.Marshal(prometheus)
	if err != nil {
		return err
	}
	fmt.Println(string(b))
	log.CInfo(m.ctx, "prometheus", "prometheus", string(b))
	// 调试日志：打印关键启动参数
	log.CInfo(m.ctx, "msg-gateway starting",
		"autoSetPorts", rpc.AutoSetPorts,
		"rpcPorts", rpc.Ports,
		"prometheusEnable", prometheus.Enable,
		"prometheusPorts", prometheus.Ports,
		"index", int(m.msgGatewayConfig.Index),
		"listenIP", rpc.ListenIP,
		"registerIP", rpc.RegisterIP,
	)

	if !rpc.AutoSetPorts && (len(rpc.Ports) == 0) {
		log.ZWarn(m.ctx, "rpc ports is empty while autoSetPorts=false", nil)
	}
	if prometheus.Enable && len(prometheus.Ports) == 0 {
		log.ZWarn(m.ctx, "prometheus enabled but ports is empty", nil)
	}
	return startrpc.Start(
		m.ctx, &m.msgGatewayConfig.Discovery,
		&m.msgGatewayConfig.MsgGateway.CircuitBreaker,
		&m.msgGatewayConfig.MsgGateway.RateLimiter,
		&prometheus,
		rpc.ListenIP, rpc.RegisterIP,
		rpc.AutoSetPorts,
		rpc.Ports, int(m.msgGatewayConfig.Index),
		m.msgGatewayConfig.Discovery.RpcService.MessageGateway,
		nil,
		m.msgGatewayConfig,
		[]string{},
		[]string{},
		msggateway.Start,
	)
}