package main

import (
	"github.com/gorilla/websocket"
	uuid "github.com/satori/go.uuid"
	"math/rand"
	"strconv"
	"strings"
	"time"
)

type MonfloManagement struct {
	clients []*ClientInfo
}

type ClientInfo struct {
	UserName     string   `json:"user_name"`
	Metadata     string   `json:"metadata"`
	Name         string   `json:"name"`
	PrivateAddr  string   `json:"private_addr"`
	PublicAddr   string   `json:"public_addr"`
	Key          string   `json:"key"`
	Bitrate      int      `json:"bitrate"`
	Formats      []string `json:"formats"` //h264 h265
	Stream       string   `json:"stream"`
	ClientStatus string   `json:"client_status"` //online offline
	StreamStatus string   `json:"stream_status"` //ready busy
	CreatedAt    int64    `json:"created_at"`    //1599031125
	ApiKey       string   `json:"apikey"`        //"apikey-af461547-da12-5e33-9a99-c63d9000762b"
	MacAddress   string   `json:"mac_address"`   //"04ea56b3f380"
	Fingerprint  string   `json:"fingerprint"`   //"fingerprint": "45c9dd6c-6925-a994-3fc3-c26cdec786ce",
	Id           string   `json:"id"`            // "id": "device-4d4c9fba-4d11-5b10-b3b3-05346a7bd4d2",
	Client       string   `json:"client"`        //"client": "client-8c220f6e-3432-5f41-80f2-b830f7b60658",
	wsConn       *websocket.Conn
	StreamId     string `json:"stream_id"`   //40832596627
	ClientType   string `json:"client_type"` //client server
}

func (m *MonfloManagement) checkExist(userName string, fingerprint string) bool {
	if m.clients == nil {
		return false
	}
	for _, client := range m.clients {
		if client.Fingerprint == fingerprint && client.UserName == userName {
			return true
		}
	}
	return false
}

func (m *MonfloManagement) getClient(userName string, fingerprint string) *ClientInfo {

	for _, client := range m.clients {
		if client.Fingerprint == fingerprint && client.UserName == userName {
			return client
		}
	}
	return nil
}

func (m *MonfloManagement) getClientByApiKey(apiKey string) *ClientInfo {
	for _, client := range m.clients {
		if client.ApiKey == apiKey {
			return client
		}
	}
	return nil
}

func (m *MonfloManagement) getClientByFingerprint(fingerprint string) *ClientInfo {

	for _, client := range m.clients {
		if client.Fingerprint == fingerprint {
			return client
		}
	}
	return nil
}

func (m *MonfloManagement) addClient(userName string, fingerprint string) {
	if !m.checkExist(userName, fingerprint) {
		client := &ClientInfo{
			UserName:     userName,
			CreatedAt:    time.Now().Unix(),
			ApiKey:       "apikey-" + fingerprint,
			Fingerprint:  fingerprint,
			Id:           "device-" + fingerprint,
			Client:       "client-" + fingerprint,
			ClientStatus: "offline",
		}
		m.clients = append(m.clients, client)
	}
}

func (m *MonfloManagement) addServer(clientStr string) *ClientInfo {
	for _, c := range m.clients {
		if c.Client == clientStr {
			return c
		}
	}
	client := &ClientInfo{
		Client:    clientStr,
		CreatedAt: time.Now().Unix(),
	}
	m.clients = append(m.clients, client)
	return client
}

func (m *MonfloManagement) addDevice(request AddDeviceRequest) {
	client := m.getClientByFingerprint(request.Fingerprint)
	client.Name = request.Name
	client.Fingerprint = request.Fingerprint
	client.Metadata = request.Metadata
	client.MacAddress = request.MacAddress
	if strings.Contains(request.Metadata, "\"streamer\":\"1\",") {
		client.ClientType = "server"
	} else {
		client.ClientType = "client"
	}
}

func (m *MonfloManagement) getPeers(userName string) map[string]PeerInfo {
	peers := make(map[string]PeerInfo)

	if m.clients == nil {
		return peers
	}
	for _, client := range m.clients {
		if client.UserName == userName {
			streams := make(map[string]StreamInfo)
			var formats = []string{"h264", "h265"}
			if client.Stream != "" {
				streams[client.Stream] = StreamInfo{
					Id:          client.Stream,
					Status:      client.StreamStatus,
					OwnerClient: client.Client,
					Name:        client.Name,
					PrivateAddr: client.PrivateAddr,
					PublicAddr:  client.PublicAddr,
					Key:         client.Key,
					Bitrate:     500000,
					Formats:     formats,
				}
			}
			peers[client.Client] = PeerInfo{
				Name:   client.Name,
				Status: client.ClientStatus, //online;offline
				LastIP: IPInfo{
					PrivateAddr: client.PrivateAddr,
					PublicAddr:  client.PublicAddr,
				},
				Streams: streams,
			}

		}
	}
	return peers
}

func (m *MonfloManagement) getDevices(userName string) []LoginResponse {
	var devices []LoginResponse

	if m.clients == nil {
		return devices
	}
	for _, client := range m.clients {
		if client.UserName == userName {
			device := LoginResponse{
				CreatedAt:   client.CreatedAt,
				ApiKey:      client.ApiKey,
				MacAddress:  client.MacAddress,
				Metadata:    client.Metadata,
				Fingerprint: client.Fingerprint,
				Id:          client.Id,
				Client:      client.Client,
				Name:        client.Name,
			}
			devices = append(devices, device)
		}
	}
	return devices
}

func (m *MonfloManagement) genId(client *ClientInfo) {
	id := 10000000009 + 8*rand.Int63n(5)
	for {
		if !m.checkIdExist(strconv.FormatInt(id, 10)) {
			break
		}
		id = 10000000009 + 8*rand.Int63n(5)
	}
	client.StreamId = strconv.FormatInt(id, 10)
}

func (m *MonfloManagement) genStream(client *ClientInfo) {
	uid, _ := uuid.NewV4()
	client.Stream = "stream-" + uid.String()
	client.StreamStatus = "ready"
}

func (m *MonfloManagement) checkIdExist(id string) bool {
	for _, c := range m.clients {
		if c.Id == id {
			return true
		}
	}
	return false
}

func (m *MonfloManagement) setOffline(clientId string) {
	del := -1
	for i, c := range m.clients {
		if c.Client == clientId {
			if c.ApiKey == "" && c.Id == "" {
				del = i
			}
			c.ClientStatus = "offline"
		}
	}
	if del >= 0 {
		m.clients = append(m.clients[:del], m.clients[del+1:]...)
	}
}

func (m *MonfloManagement) getClientStream(stream string) *ClientInfo {
	for _, c := range m.clients {
		if c.Stream == stream {
			return c
		}
	}
	return nil
}

func (m *MonfloManagement) getClientStreamId(streamId string) *ClientInfo {
	for _, c := range m.clients {
		if c.StreamId == streamId {
			return c
		}
	}
	return nil
}

func (m *MonfloManagement) getUserAllClient(userName string) []*ClientInfo {
	var clients []*ClientInfo
	for _, c := range m.clients {
		if c.UserName == userName {
			clients = append(clients, c)
		}
	}
	return clients
}