package host

import (
    "gopkg.in/macaron.v1"
    "github.com/ouqiang/gocron/models"
    "github.com/ouqiang/gocron/modules/utils"
    "github.com/ouqiang/gocron/modules/logger"
    "strconv"
    "github.com/ouqiang/gocron/modules/ssh"
    "github.com/ouqiang/gocron/service"
    "github.com/Unknwon/paginater"
    "fmt"
    "html/template"
    "github.com/ouqiang/gocron/routers/base"
)

func Index(ctx *macaron.Context)  {
    hostModel := new(models.Host)
    queryParams := parseQueryParams(ctx)
    total, err := hostModel.Total(queryParams)
    hosts, err := hostModel.List(queryParams)
    if err != nil {
        logger.Error(err)
    }
    name, ok := queryParams["name"].(string)
    var safeNameHTML = ""
    if ok {
        safeNameHTML = template.HTMLEscapeString(name)
    }
    PageParams := fmt.Sprintf("id=%d&name=%s&page_size=%d",
        queryParams["Id"],  safeNameHTML, queryParams["PageSize"]);
    queryParams["PageParams"] = template.URL(PageParams)
    p := paginater.New(int(total), queryParams["PageSize"].(int), queryParams["Page"].(int), 5)
    ctx.Data["Pagination"] = p
    ctx.Data["Title"] = "主机列表"
    ctx.Data["Hosts"] = hosts
    ctx.Data["Params"] = queryParams
    ctx.HTML(200, "host/index")
}

func Create(ctx *macaron.Context)  {
    ctx.Data["Title"] = "添加主机"
    ctx.HTML(200, "host/host_form")
}

func Edit(ctx *macaron.Context)  {
    ctx.Data["Title"] = "编辑主机"
    hostModel := new(models.Host)
    id := ctx.ParamsInt(":id")
    err := hostModel.Find(id)
    if err != nil {
        logger.Errorf("获取主机详情失败#主机id-%d", id)
    }
    ctx.Data["Host"] = hostModel
    ctx.HTML(200, "host/host_form")
}

func Ping(ctx *macaron.Context) string  {
    id := ctx.ParamsInt(":id")
    hostModel := new(models.Host)
    err := hostModel.Find(id)
    json := utils.JsonResponse{}
    if err != nil || hostModel.Id <= 0{
        return json.CommonFailure("主机不存在", err)
    }

    sshConfig := ssh.SSHConfig{}
    sshConfig.User = hostModel.Username
    sshConfig.Host = hostModel.Name
    sshConfig.Port = hostModel.Port
    sshConfig.ExecTimeout = 5
    sshConfig.AuthType = hostModel.AuthType
    var password string
    var privateKey string
    if hostModel.AuthType == ssh.HostPassword {
        password, err = hostModel.GetPasswordByHost(hostModel.Name)
        if err != nil {
            return json.CommonFailure(err.Error(), err)
        }
        sshConfig.Password = password
    } else {
        privateKey, err = hostModel.GetPrivateKeyByHost(hostModel.Name)
        if err != nil {
            return json.CommonFailure(err.Error(), err)
        }
        sshConfig.PrivateKey = privateKey
    }

    _, err = ssh.Exec(sshConfig, "pwd")
    if err != nil {
        return json.CommonFailure("连接失败-" + err.Error(), err)
    }

    return json.Success("连接成功", nil)
}

type HostForm struct {
    Id int16
    Name string `binding:"Required;MaxSize(100)"`
    Alias string `binding:"Required;MaxSize(32)"`
    Username string `binding:"Required;MaxSize(32)"`
    Port int `binding:"Required;Range(1-65535)"`
    AuthType ssh.HostAuthType `binding:"Required:Range(1,2)"`
    Remark string
}

func Store(ctx *macaron.Context, form HostForm) string  {
    json := utils.JsonResponse{}
    hostModel := new(models.Host)
    id := form.Id
    nameExist, err := hostModel.NameExists(form.Name, form.Id)
    if err != nil {
        return json.CommonFailure("操作失败", err)
    }
    if nameExist {
        return json.CommonFailure("主机名已存在")
    }

    hostModel.Name = form.Name
    hostModel.Alias = form.Alias
    hostModel.Username = form.Username
    hostModel.Port = form.Port
    hostModel.Remark = form.Remark
    hostModel.AuthType = form.AuthType
    isCreate := false
    if id > 0 {
        _, err = hostModel.UpdateBean(id)
    } else {
        isCreate = true
        id, err = hostModel.Create()
    }
    if err != nil {
        return json.CommonFailure("保存失败", err)
    }

    taskModel := new(models.TaskHost)
    tasks, err := taskModel.ActiveListByHostId(id)
    if  err != nil {
        return json.CommonFailure("刷新任务主机信息失败", err)
    }
    if !isCreate && len(tasks) > 0 {
        serviceTask := new(service.Task)
        serviceTask.BatchAdd(tasks)
    }

    return json.Success("保存成功", nil)
}

func Remove(ctx *macaron.Context) string  {
    id, err := strconv.Atoi(ctx.Params(":id"))
    json := utils.JsonResponse{}
    if err != nil {
        return json.CommonFailure("参数错误", err)
    }
    taskModel := new(models.Task)
    exist,err := taskModel.HostIdExist(int16(id))
    if err != nil {
        return json.CommonFailure("操作失败", err)
    }
    if exist {
        return json.CommonFailure("有任务引用此主机，不能删除")
    }

    hostModel := new(models.Host)
    _, err =hostModel.Delete(id)
    if err != nil {
        return json.CommonFailure("操作失败", err)
    }

    return json.Success("操作成功", nil)
}

// 解析查询参数
func parseQueryParams(ctx *macaron.Context) (models.CommonMap) {
    var params models.CommonMap = models.CommonMap{}
    params["Id"] = ctx.QueryInt("id")
    params["Name"] = ctx.QueryTrim("name")
    base.ParsePageAndPageSize(ctx, params)

    return params
}