package api

import (
	"encoding/base64"
	"fmt"
	"mayfly-go/internal/common/consts"
	"mayfly-go/internal/machine/api/form"
	"mayfly-go/internal/machine/api/vo"
	"mayfly-go/internal/machine/application"
	"mayfly-go/internal/machine/config"
	"mayfly-go/internal/machine/domain/entity"
	tagapp "mayfly-go/internal/tag/application"
	"mayfly-go/pkg/biz"
	"mayfly-go/pkg/errorx"
	"mayfly-go/pkg/ginx"
	"mayfly-go/pkg/model"
	"mayfly-go/pkg/req"
	"mayfly-go/pkg/utils/anyx"
	"mayfly-go/pkg/utils/collx"
	"mayfly-go/pkg/ws"
	"os"
	"path"
	"strconv"
	"strings"

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

type Machine struct {
	MachineApp       application.Machine       `inject:""`
	MachineTermOpApp application.MachineTermOp `inject:""`
	TagApp           tagapp.TagTree            `inject:"TagTreeApp"`
}

func (m *Machine) Machines(rc *req.Ctx) {
	condition, pageParam := ginx.BindQueryAndPage(rc.GinCtx, new(entity.MachineQuery))

	// 不存在可访问标签id，即没有可操作数据
	codes := m.TagApp.GetAccountResourceCodes(rc.GetLoginAccount().Id, consts.TagResourceTypeMachine, condition.TagPath)
	if len(codes) == 0 {
		rc.ResData = model.EmptyPageResult[any]()
		return
	}
	condition.Codes = codes

	res, err := m.MachineApp.GetMachineList(condition, pageParam, new([]*vo.MachineVO))
	biz.ErrIsNil(err)
	if res.Total == 0 {
		rc.ResData = res
		return
	}

	for _, mv := range *res.List {
		if machineStats, err := m.MachineApp.GetMachineStats(mv.Id); err == nil {
			mv.Stat = collx.M{
				"cpuIdle":      machineStats.CPU.Idle,
				"memAvailable": machineStats.MemInfo.Available,
				"memTotal":     machineStats.MemInfo.Total,
				"fsInfos":      machineStats.FSInfos,
			}
		}
	}
	rc.ResData = res
}

func (m *Machine) MachineStats(rc *req.Ctx) {
	cli, err := m.MachineApp.GetCli(GetMachineId(rc.GinCtx))
	biz.ErrIsNilAppendErr(err, "获取客户端连接失败: %s")
	rc.ResData = cli.GetAllStats()
}

// 保存机器信息
func (m *Machine) SaveMachine(rc *req.Ctx) {
	machineForm := new(form.MachineForm)
	me := ginx.BindJsonAndCopyTo(rc.GinCtx, machineForm, new(entity.Machine))

	machineForm.Password = "******"
	rc.ReqParam = machineForm

	biz.ErrIsNil(m.MachineApp.SaveMachine(rc.MetaCtx, me, machineForm.TagId...))
}

func (m *Machine) TestConn(rc *req.Ctx) {
	me := ginx.BindJsonAndCopyTo(rc.GinCtx, new(form.MachineForm), new(entity.Machine))
	// 测试连接
	biz.ErrIsNilAppendErr(m.MachineApp.TestConn(me), "该机器无法连接: %s")
}

func (m *Machine) ChangeStatus(rc *req.Ctx) {
	g := rc.GinCtx
	id := uint64(ginx.PathParamInt(g, "machineId"))
	status := int8(ginx.PathParamInt(g, "status"))
	rc.ReqParam = collx.Kvs("id", id, "status", status)
	biz.ErrIsNil(m.MachineApp.ChangeStatus(rc.MetaCtx, id, status))
}

func (m *Machine) DeleteMachine(rc *req.Ctx) {
	idsStr := ginx.PathParam(rc.GinCtx, "machineId")
	rc.ReqParam = idsStr
	ids := strings.Split(idsStr, ",")

	for _, v := range ids {
		value, err := strconv.Atoi(v)
		biz.ErrIsNilAppendErr(err, "string类型转换为int异常: %s")
		m.MachineApp.Delete(rc.MetaCtx, uint64(value))
	}
}

// 获取进程列表信息
func (m *Machine) GetProcess(rc *req.Ctx) {
	g := rc.GinCtx
	cmd := "ps -aux "
	sortType := g.Query("sortType")
	if sortType == "2" {
		cmd += "--sort -pmem "
	} else {
		cmd += "--sort -pcpu "
	}

	pname := g.Query("name")
	if pname != "" {
		cmd += fmt.Sprintf("| grep %s ", pname)
	}

	count := ginx.QueryInt(g, "count", 10)
	cmd += "| head -n " + fmt.Sprintf("%d", count)

	cli, err := m.MachineApp.GetCli(GetMachineId(rc.GinCtx))
	biz.ErrIsNilAppendErr(err, "获取客户端连接失败: %s")
	biz.ErrIsNilAppendErr(m.TagApp.CanAccess(rc.GetLoginAccount().Id, cli.Info.TagPath...), "%s")

	res, err := cli.Run(cmd)
	biz.ErrIsNilAppendErr(err, "获取进程信息失败: %s")
	rc.ResData = res
}

// 终止进程
func (m *Machine) KillProcess(rc *req.Ctx) {
	pid := rc.GinCtx.Query("pid")
	biz.NotEmpty(pid, "进程id不能为空")

	cli, err := m.MachineApp.GetCli(GetMachineId(rc.GinCtx))
	biz.ErrIsNilAppendErr(err, "获取客户端连接失败: %s")
	biz.ErrIsNilAppendErr(m.TagApp.CanAccess(rc.GetLoginAccount().Id, cli.Info.TagPath...), "%s")

	res, err := cli.Run("sudo kill -9 " + pid)
	biz.ErrIsNil(err, "终止进程失败: %s", res)
}

func (m *Machine) WsSSH(g *gin.Context) {
	wsConn, err := ws.Upgrader.Upgrade(g.Writer, g.Request, nil)
	defer func() {
		if wsConn != nil {
			if err := recover(); err != nil {
				wsConn.WriteMessage(websocket.TextMessage, []byte(anyx.ToString(err)))
			}
			wsConn.Close()
		}
	}()
	biz.ErrIsNilAppendErr(err, "升级websocket失败: %s")
	wsConn.WriteMessage(websocket.TextMessage, []byte("Connecting to host..."))

	// 权限校验
	rc := req.NewCtxWithGin(g).WithRequiredPermission(req.NewPermission("machine:terminal"))
	if err = req.PermissionHandler(rc); err != nil {
		panic(errorx.NewBiz("\033[1;31m您没有权限操作该机器终端,请重新登录后再试~\033[0m"))
	}

	cli, err := m.MachineApp.NewCli(GetMachineId(g))
	biz.ErrIsNilAppendErr(err, "获取客户端连接失败: %s")
	defer cli.Close()
	biz.ErrIsNilAppendErr(m.TagApp.CanAccess(rc.GetLoginAccount().Id, cli.Info.TagPath...), "%s")

	cols := ginx.QueryInt(g, "cols", 80)
	rows := ginx.QueryInt(g, "rows", 32)

	// 记录系统操作日志
	rc.WithLog(req.NewLogSave("机器-终端操作"))
	rc.ReqParam = cli.Info
	req.LogHandler(rc)

	err = m.MachineTermOpApp.TermConn(rc.MetaCtx, cli, wsConn, rows, cols)
	biz.ErrIsNilAppendErr(err, "\033[1;31m连接失败: %s\033[0m")
}

func (m *Machine) MachineTermOpRecords(rc *req.Ctx) {
	mid := GetMachineId(rc.GinCtx)
	res, err := m.MachineTermOpApp.GetPageList(&entity.MachineTermOp{MachineId: mid}, ginx.GetPageParam(rc.GinCtx), new([]entity.MachineTermOp))
	biz.ErrIsNil(err)
	rc.ResData = res
}

func (m *Machine) MachineTermOpRecord(rc *req.Ctx) {
	recId, _ := strconv.Atoi(rc.GinCtx.Param("recId"))
	termOp, err := m.MachineTermOpApp.GetById(new(entity.MachineTermOp), uint64(recId))
	biz.ErrIsNil(err)

	bytes, err := os.ReadFile(path.Join(config.GetMachine().TerminalRecPath, termOp.RecordFilePath))
	biz.ErrIsNilAppendErr(err, "读取终端操作记录失败: %s")
	rc.ResData = base64.StdEncoding.EncodeToString(bytes)
}

func GetMachineId(g *gin.Context) uint64 {
	machineId, _ := strconv.Atoi(g.Param("machineId"))
	biz.IsTrue(machineId != 0, "machineId错误")
	return uint64(machineId)
}