package controller

import (
	"encoding/json"
	"fmt"
	"time"

	"github.com/mhsanaei/3x-ui/v3/database/model"
	"github.com/mhsanaei/3x-ui/v3/web/service"
	"github.com/mhsanaei/3x-ui/v3/web/websocket"

	"github.com/gin-gonic/gin"
)

func notifyClientsChanged() {
	websocket.BroadcastInvalidate(websocket.MessageTypeClients)
}

type ClientController struct {
	clientService  service.ClientService
	inboundService service.InboundService
	xrayService    service.XrayService
}

func NewClientController(g *gin.RouterGroup) *ClientController {
	a := &ClientController{}
	a.initRouter(g)
	return a
}

func (a *ClientController) initRouter(g *gin.RouterGroup) {
	g.GET("/list", a.list)
	g.GET("/get/:email", a.get)
	g.GET("/traffic/:email", a.getTrafficByEmail)
	g.GET("/subLinks/:subId", a.getSubLinks)
	g.GET("/links/:email", a.getClientLinks)

	g.POST("/add", a.create)
	g.POST("/update/:email", a.update)
	g.POST("/del/:email", a.delete)
	g.POST("/:email/attach", a.attach)
	g.POST("/:email/detach", a.detach)
	g.POST("/resetAllTraffics", a.resetAllTraffics)
	g.POST("/delDepleted", a.delDepleted)
	g.POST("/resetTraffic/:email", a.resetTrafficByEmail)
	g.POST("/updateTraffic/:email", a.updateTrafficByEmail)
	g.POST("/ips/:email", a.getIps)
	g.POST("/clearIps/:email", a.clearIps)
	g.POST("/onlines", a.onlines)
	g.POST("/lastOnline", a.lastOnline)
}

func (a *ClientController) list(c *gin.Context) {
	rows, err := a.clientService.List()
	if err != nil {
		jsonMsg(c, I18nWeb(c, "pages.inbounds.toasts.obtain"), err)
		return
	}
	jsonObj(c, rows, nil)
}

func (a *ClientController) get(c *gin.Context) {
	email := c.Param("email")
	rec, err := a.clientService.GetRecordByEmail(nil, email)
	if err != nil {
		jsonMsg(c, I18nWeb(c, "get"), err)
		return
	}
	inboundIds, err := a.clientService.GetInboundIdsForRecord(rec.Id)
	if err != nil {
		jsonMsg(c, I18nWeb(c, "get"), err)
		return
	}
	jsonObj(c, gin.H{"client": rec, "inboundIds": inboundIds}, nil)
}

func (a *ClientController) create(c *gin.Context) {
	var payload service.ClientCreatePayload
	if err := c.ShouldBindJSON(&payload); err != nil {
		jsonMsg(c, I18nWeb(c, "somethingWentWrong"), err)
		return
	}
	needRestart, err := a.clientService.Create(&a.inboundService, &payload)
	if err != nil {
		jsonMsg(c, I18nWeb(c, "somethingWentWrong"), err)
		return
	}
	jsonMsg(c, I18nWeb(c, "pages.inbounds.toasts.inboundClientAddSuccess"), nil)
	if needRestart {
		a.xrayService.SetToNeedRestart()
	}
	notifyClientsChanged()
}

func (a *ClientController) update(c *gin.Context) {
	email := c.Param("email")
	var updated model.Client
	if err := c.ShouldBindJSON(&updated); err != nil {
		jsonMsg(c, I18nWeb(c, "somethingWentWrong"), err)
		return
	}
	needRestart, err := a.clientService.UpdateByEmail(&a.inboundService, email, updated)
	if err != nil {
		jsonMsg(c, I18nWeb(c, "somethingWentWrong"), err)
		return
	}
	jsonMsg(c, I18nWeb(c, "pages.inbounds.toasts.inboundClientUpdateSuccess"), nil)
	if needRestart {
		a.xrayService.SetToNeedRestart()
	}
	notifyClientsChanged()
}

func (a *ClientController) delete(c *gin.Context) {
	email := c.Param("email")
	keepTraffic := c.Query("keepTraffic") == "1"
	needRestart, err := a.clientService.DeleteByEmail(&a.inboundService, email, keepTraffic)
	if err != nil {
		jsonMsg(c, I18nWeb(c, "somethingWentWrong"), err)
		return
	}
	jsonMsg(c, I18nWeb(c, "pages.inbounds.toasts.inboundClientDeleteSuccess"), nil)
	if needRestart {
		a.xrayService.SetToNeedRestart()
	}
	notifyClientsChanged()
}

type attachDetachBody struct {
	InboundIds []int `json:"inboundIds"`
}

func (a *ClientController) attach(c *gin.Context) {
	email := c.Param("email")
	var body attachDetachBody
	if err := c.ShouldBindJSON(&body); err != nil {
		jsonMsg(c, I18nWeb(c, "somethingWentWrong"), err)
		return
	}
	needRestart, err := a.clientService.AttachByEmail(&a.inboundService, email, body.InboundIds)
	if err != nil {
		jsonMsg(c, I18nWeb(c, "somethingWentWrong"), err)
		return
	}
	jsonMsg(c, I18nWeb(c, "pages.inbounds.toasts.inboundClientAddSuccess"), nil)
	if needRestart {
		a.xrayService.SetToNeedRestart()
	}
	notifyClientsChanged()
}

func (a *ClientController) resetAllTraffics(c *gin.Context) {
	needRestart, err := a.clientService.ResetAllTraffics()
	if err != nil {
		jsonMsg(c, I18nWeb(c, "somethingWentWrong"), err)
		return
	}
	jsonMsg(c, I18nWeb(c, "pages.inbounds.toasts.resetAllClientTrafficSuccess"), nil)
	if needRestart {
		a.xrayService.SetToNeedRestart()
	}
	notifyClientsChanged()
}

func (a *ClientController) delDepleted(c *gin.Context) {
	deleted, needRestart, err := a.clientService.DelDepleted(&a.inboundService)
	if err != nil {
		jsonMsg(c, I18nWeb(c, "somethingWentWrong"), err)
		return
	}
	jsonObj(c, gin.H{"deleted": deleted}, nil)
	if needRestart {
		a.xrayService.SetToNeedRestart()
	}
	notifyClientsChanged()
}

func (a *ClientController) resetTrafficByEmail(c *gin.Context) {
	email := c.Param("email")
	needRestart, err := a.clientService.ResetTrafficByEmail(&a.inboundService, email)
	if err != nil {
		jsonMsg(c, I18nWeb(c, "somethingWentWrong"), err)
		return
	}
	jsonMsg(c, I18nWeb(c, "pages.inbounds.toasts.resetInboundClientTrafficSuccess"), nil)
	if needRestart {
		a.xrayService.SetToNeedRestart()
	}
	notifyClientsChanged()
}

type trafficUpdateRequest struct {
	Upload   int64 `json:"upload"`
	Download int64 `json:"download"`
}

func (a *ClientController) updateTrafficByEmail(c *gin.Context) {
	email := c.Param("email")
	var req trafficUpdateRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		jsonMsg(c, I18nWeb(c, "somethingWentWrong"), err)
		return
	}
	if err := a.inboundService.UpdateClientTrafficByEmail(email, req.Upload, req.Download); err != nil {
		jsonMsg(c, I18nWeb(c, "somethingWentWrong"), err)
		return
	}
	jsonMsg(c, I18nWeb(c, "pages.inbounds.toasts.inboundClientUpdateSuccess"), nil)
	notifyClientsChanged()
}

func (a *ClientController) getIps(c *gin.Context) {
	email := c.Param("email")
	ips, err := a.inboundService.GetInboundClientIps(email)
	if err != nil || ips == "" {
		jsonObj(c, "No IP Record", nil)
		return
	}
	type ipWithTimestamp struct {
		IP        string `json:"ip"`
		Timestamp int64  `json:"timestamp"`
	}
	var ipsWithTime []ipWithTimestamp
	if err := json.Unmarshal([]byte(ips), &ipsWithTime); err == nil && len(ipsWithTime) > 0 {
		formatted := make([]string, 0, len(ipsWithTime))
		for _, item := range ipsWithTime {
			if item.IP == "" {
				continue
			}
			if item.Timestamp > 0 {
				ts := time.Unix(item.Timestamp, 0).Local().Format("2006-01-02 15:04:05")
				formatted = append(formatted, fmt.Sprintf("%s (%s)", item.IP, ts))
				continue
			}
			formatted = append(formatted, item.IP)
		}
		jsonObj(c, formatted, nil)
		return
	}
	var oldIps []string
	if err := json.Unmarshal([]byte(ips), &oldIps); err == nil && len(oldIps) > 0 {
		jsonObj(c, oldIps, nil)
		return
	}
	jsonObj(c, ips, nil)
}

func (a *ClientController) clearIps(c *gin.Context) {
	email := c.Param("email")
	if err := a.inboundService.ClearClientIps(email); err != nil {
		jsonMsg(c, I18nWeb(c, "pages.inbounds.toasts.updateSuccess"), err)
		return
	}
	jsonMsg(c, I18nWeb(c, "pages.inbounds.toasts.logCleanSuccess"), nil)
}

func (a *ClientController) onlines(c *gin.Context) {
	jsonObj(c, a.inboundService.GetOnlineClients(), nil)
}

func (a *ClientController) lastOnline(c *gin.Context) {
	data, err := a.inboundService.GetClientsLastOnline()
	jsonObj(c, data, err)
}

func (a *ClientController) getTrafficByEmail(c *gin.Context) {
	email := c.Param("email")
	traffic, err := a.inboundService.GetClientTrafficByEmail(email)
	if err != nil {
		jsonMsg(c, I18nWeb(c, "pages.inbounds.toasts.trafficGetError"), err)
		return
	}
	jsonObj(c, traffic, nil)
}

func (a *ClientController) getSubLinks(c *gin.Context) {
	links, err := a.inboundService.GetSubLinks(resolveHost(c), c.Param("subId"))
	if err != nil {
		jsonMsg(c, I18nWeb(c, "pages.inbounds.toasts.obtain"), err)
		return
	}
	jsonObj(c, links, nil)
}

func (a *ClientController) getClientLinks(c *gin.Context) {
	links, err := a.inboundService.GetAllClientLinks(resolveHost(c), c.Param("email"))
	if err != nil {
		jsonMsg(c, I18nWeb(c, "pages.inbounds.toasts.obtain"), err)
		return
	}
	jsonObj(c, links, nil)
}

func (a *ClientController) detach(c *gin.Context) {
	email := c.Param("email")
	var body attachDetachBody
	if err := c.ShouldBindJSON(&body); err != nil {
		jsonMsg(c, I18nWeb(c, "somethingWentWrong"), err)
		return
	}
	needRestart, err := a.clientService.DetachByEmailMany(&a.inboundService, email, body.InboundIds)
	if err != nil {
		jsonMsg(c, I18nWeb(c, "somethingWentWrong"), err)
		return
	}
	jsonMsg(c, I18nWeb(c, "pages.inbounds.toasts.inboundClientDeleteSuccess"), nil)
	if needRestart {
		a.xrayService.SetToNeedRestart()
	}
	notifyClientsChanged()
}