tank/code/rest/base_controller.go
2019-05-07 02:21:39 +08:00

113 lines
3.0 KiB
Go

package rest
import (
"fmt"
"github.com/eyebluecn/tank/code/core"
"github.com/eyebluecn/tank/code/tool/i18n"
"github.com/eyebluecn/tank/code/tool/result"
"github.com/eyebluecn/tank/code/tool/util"
"github.com/json-iterator/go"
"go/types"
"net/http"
)
type BaseController struct {
BaseBean
userDao *UserDao
sessionDao *SessionDao
}
func (this *BaseController) Init() {
this.BaseBean.Init()
b := core.CONTEXT.GetBean(this.userDao)
if b, ok := b.(*UserDao); ok {
this.userDao = b
}
b = core.CONTEXT.GetBean(this.sessionDao)
if b, ok := b.(*SessionDao); ok {
this.sessionDao = b
}
}
func (this *BaseController) RegisterRoutes() map[string]func(writer http.ResponseWriter, request *http.Request) {
return make(map[string]func(writer http.ResponseWriter, request *http.Request))
}
//handle some special routes, eg. params in the url.
func (this *BaseController) HandleRoutes(writer http.ResponseWriter, request *http.Request) (func(writer http.ResponseWriter, request *http.Request), bool) {
return nil, false
}
//wrap the handle method.
func (this *BaseController) Wrap(f func(writer http.ResponseWriter, request *http.Request) *result.WebResult, qualifiedRole string) func(w http.ResponseWriter, r *http.Request) {
return func(writer http.ResponseWriter, request *http.Request) {
var webResult *result.WebResult = nil
//if the api not annotated with GUEST. login is required.
if qualifiedRole != USER_ROLE_GUEST {
user := this.checkUser(request)
if user.Status == USER_STATUS_DISABLED {
//check user's status
webResult = result.CustomWebResultI18n(request, result.USER_DISABLED, i18n.UserDisabled)
} else {
if qualifiedRole == USER_ROLE_ADMINISTRATOR && user.Role != USER_ROLE_ADMINISTRATOR {
webResult = result.ConstWebResult(result.UNAUTHORIZED)
} else {
webResult = f(writer, request)
}
}
} else {
webResult = f(writer, request)
}
//if webResult not nil. response a json. if webResult is nil, return empty body or binary content.
if webResult != nil {
writer.Header().Set("Content-Type", "application/json;charset=UTF-8")
b, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(webResult)
this.PanicError(err)
writer.WriteHeader(result.FetchHttpStatus(webResult.Code))
_, err = fmt.Fprintf(writer, string(b))
this.PanicError(err)
}
}
}
//response a success result. 1.string 2. WebResult 3.nil pointer 4.any type
func (this *BaseController) Success(data interface{}) *result.WebResult {
var webResult *result.WebResult = nil
if value, ok := data.(string); ok {
//a simple message
webResult = &result.WebResult{Code: result.OK.Code, Msg: value}
} else if value, ok := data.(*result.WebResult); ok {
//a webResult
webResult = value
} else if _, ok := data.(types.Nil); ok {
//nil pointer means OK.
webResult = result.ConstWebResult(result.OK)
} else {
//other type.
webResult = &result.WebResult{Code: result.OK.Code, Data: data}
}
return webResult
}
//allow cors.
func (this *BaseController) allowCORS(writer http.ResponseWriter) {
util.AllowCORS(writer)
}