package main

import "C"
import (
    "encoding/json"
    "time"

    "github.com/Akilan1999/p2p-rendering-computation/abstractions"
    "github.com/Akilan1999/p2p-rendering-computation/p2p/frp"
)

// The Client package where data-types
// are manually converted to the
// to a string so that it can
// be export

// --------------------------------- Container Control ----------------------------------------

//export StartContainer
func StartContainer(IP string) (output *C.char) {
    container, err := abstractions.StartContainer(IP)
    if err != nil {
        return C.CString(err.Error())
    }
    return ConvertStructToJSONString(container)
}

//export RemoveContainer
func RemoveContainer(IP string, ID string) (output *C.char) {
    err := abstractions.RemoveContainer(IP, ID)
    if err != nil {
        return C.CString(err.Error())
    }
    return C.CString("Success")
}

// --------------------------------- Plugin Control ----------------------------------------

// DEPRECATED
////export ViewPlugin
//func ViewPlugin() (output *C.char) {
//	plugins, err := plugin.DetectPlugins()
//	if err != nil {
//		return C.CString(err.Error())
//	}
//	return ConvertStructToJSONString(plugins)
//}
//
////export PullPlugin
//func PullPlugin(pluginUrl string) (output *C.char) {
//	err := plugin.DownloadPlugin(pluginUrl)
//	if err != nil {
//		return C.CString(err.Error())
//	}
//	return C.CString("Success")
//}
//
////export DeletePlugin
//func DeletePlugin(pluginName string) (output *C.char) {
//	err := plugin.DeletePlugin(pluginName)
//	if err != nil {
//		return C.CString(err.Error())
//	}
//	return C.CString("Success")
//}
//
////export ExecutePlugin
//func ExecutePlugin(pluginname string, ContainerID string) (output *C.char) {
//	err := plugin.RunPluginContainer(pluginname, ContainerID)
//	if err != nil {
//		return C.CString(err.Error())
//	}
//	return C.CString("Success")
//}

// --------------------------------- Get Specs ----------------------------------------

//export GetSpecs
func GetSpecs(IP string) (output *C.char) {
    specs, err := abstractions.GetSpecs(IP)
    if err != nil {
        return C.CString(err.Error())
    }
    return ConvertStructToJSONString(specs)
}

//export Init
func Init(customConfig string) (output *C.char) {
    init, err := abstractions.Init(customConfig)
    if err != nil {
        return C.CString(err.Error())
    }
    return ConvertStructToJSONString(init)

}

// --------------------------------- P2P Controls -----------------------------------

//export ViewIPTable
func ViewIPTable() (output *C.char) {
    table, err := abstractions.ViewIPTable()
    if err != nil {
        return C.CString(err.Error())
    }
    return ConvertStructToJSONString(table)
}

//export UpdateIPTable
func UpdateIPTable() (output *C.char) {
    err := abstractions.UpdateIPTable()
    if err != nil {
        return C.CString(err.Error())
    }
    return C.CString("Success")
}

//export EscapeFirewall
func EscapeFirewall(HostOutsideNATIP string, HostOutsideNATPort string, internalPort string) (output *C.char) {
    // Get free port from P2PRC server node
    serverPort, err := frp.GetFRPServerPort("http://" + HostOutsideNATIP + ":" + HostOutsideNATPort)

    if err != nil {
        return C.CString(err.Error())
    }

    time.Sleep(5 * time.Second)

    ExposedPort, err := frp.StartFRPClientForServer(HostOutsideNATIP+":"+HostOutsideNATPort, serverPort, internalPort, "")
    if err != nil {
        return C.CString(err.Error())
    }

    return C.CString(ExposedPort)
}

//export MapPort
func MapPort(Port string, DomainName string, ServerAddress string) *C.char {
    Address, err := abstractions.MapPort(Port, DomainName, ServerAddress)
    if err != nil {
        return C.CString(err.Error())
    }
    return C.CString(Address.EntireAddress)
}

//export CustomInformation
func CustomInformation(CustomInformation string) *C.char {
    err := abstractions.AddCustomInformation(CustomInformation)
    if err != nil {
        return C.CString(err.Error())
    }
    return C.CString("Success")
}

// --------------------------------- Controlling Server  ----------------------------------------

//export Server
func Server() (output *C.char) {
    _, err := abstractions.Start()
    if err != nil {
        return C.CString(err.Error())
    }

    return ConvertStructToJSONString("")
}

// --------------------------------- Helper Functions  ----------------------------------------

func ConvertStructToJSONString(Struct interface{}) *C.char {
    jsonBytes, err := json.Marshal(Struct)
    if err != nil {
        return C.CString(err.Error())
    }

    // Convert the JSON bytes to a string
    return C.CString(string(jsonBytes))
}

func main() {}