package v5cfg

import (
	"context"
	"github.com/golang/protobuf/proto"
	core "github.com/v2fly/v2ray-core/v4"
	"github.com/v2fly/v2ray-core/v4/app/dispatcher"
	"github.com/v2fly/v2ray-core/v4/app/proxyman"
	"github.com/v2fly/v2ray-core/v4/common/serial"
	"github.com/v2fly/v2ray-core/v4/infra/conf/synthetic/log"
	"google.golang.org/protobuf/types/known/anypb"
)

func (c RootConfig) BuildV5(ctx context.Context) (proto.Message, error) {
	config := &core.Config{
		App: []*anypb.Any{
			serial.ToTypedMessage(&dispatcher.Config{}),
			serial.ToTypedMessage(&proxyman.InboundConfig{}),
			serial.ToTypedMessage(&proxyman.OutboundConfig{}),
		},
	}

	var logConfMsg *anypb.Any
	if c.LogConfig != nil {
		logConfMsg = serial.ToTypedMessage(c.LogConfig.Build())
	} else {
		logConfMsg = serial.ToTypedMessage(log.DefaultLogConfig())
	}
	// let logger module be the first App to start,
	// so that other modules could print log during initiating
	config.App = append([]*anypb.Any{logConfMsg}, config.App...)

	if c.RouterConfig != nil {
		routerConfig, err := c.RouterConfig.Build()
		if err != nil {
			return nil, err
		}
		config.App = append(config.App, serial.ToTypedMessage(routerConfig))
	}

	if c.DNSConfig != nil {
		dnsApp, err := c.DNSConfig.Build()
		if err != nil {
			return nil, newError("failed to parse DNS config").Base(err)
		}
		config.App = append(config.App, serial.ToTypedMessage(dnsApp))
	}

	for _, rawInboundConfig := range c.Inbounds {
		ic, err := rawInboundConfig.BuildV5(ctx)
		if err != nil {
			return nil, err
		}
		config.Inbound = append(config.Inbound, ic.(*core.InboundHandlerConfig))
	}

	for _, rawOutboundConfig := range c.Outbounds {
		ic, err := rawOutboundConfig.BuildV5(ctx)
		if err != nil {
			return nil, err
		}
		config.Outbound = append(config.Outbound, ic.(*core.OutboundHandlerConfig))
	}

	for serviceName, service := range c.Services {
		servicePackedConfig, err := loadHeterogeneousConfigFromRawJson("inbound", serviceName, service)
		if err != nil {
			return nil, err
		}
		config.App = append(config.App, serial.ToTypedMessage(servicePackedConfig))
	}
	return config, nil
}