Files
filestash/server/common/response.go
2023-02-09 08:09:17 +11:00

182 lines
5.1 KiB
Go

package common
import (
"bytes"
"compress/gzip"
"encoding/json"
"net/http"
"strings"
)
const IndentSize = " "
type APISuccessResult struct {
Status string `json:"status"`
Result interface{} `json:"result,omitempty"`
}
type APISuccessResults struct {
Status string `json:"status"`
Results interface{} `json:"results"`
}
type APISuccessResultsWithMetadata struct {
Status string `json:"status"`
Results interface{} `json:"results"`
Metadata interface{} `json:"permissions,omitempty"`
}
type APIErrorMessage struct {
Status string `json:"status"`
Message string `json:"message,omitempty"`
}
func SendSuccessResult(res http.ResponseWriter, data interface{}) {
encoder := json.NewEncoder(res)
encoder.SetEscapeHTML(false)
if shouldIndentResponse(res) {
encoder.SetIndent("", IndentSize)
}
encoder.Encode(APISuccessResult{"ok", data})
}
func SendSuccessResultWithEtagAndGzip(res http.ResponseWriter, req *http.Request, data interface{}) {
var dataToSend []byte
var err error
if shouldIndentResponse(res) {
if dataToSend, err = json.MarshalIndent(APISuccessResult{"ok", data}, "", IndentSize); err != nil {
Log.Warning("common::response Marshal %s", err.Error())
dataToSend = []byte("{}")
}
} else {
if dataToSend, err = json.Marshal(APISuccessResult{"ok", data}); err != nil {
Log.Warning("common::response Marshal %s", err.Error())
dataToSend = []byte("{}")
}
}
mode := "normal"
if strings.Contains(req.Header.Get("Accept-Encoding"), "gzip") == true {
mode = "gzip"
}
hash := QuickHash(mode+string(dataToSend), 20)
if req.Header.Get("If-None-Match") == hash {
res.WriteHeader(http.StatusNotModified)
return
}
head := res.Header()
head.Set("Etag", hash)
if mode == "gzip" {
head.Set("Content-Encoding", "gzip")
var b bytes.Buffer
w, _ := gzip.NewWriterLevel(&b, 1)
w.Write(dataToSend)
w.Close()
dataToSend = b.Bytes()
}
res.Write(dataToSend)
}
func SendSuccessResults(res http.ResponseWriter, data interface{}) {
encoder := json.NewEncoder(res)
encoder.SetEscapeHTML(false)
if shouldIndentResponse(res) {
encoder.SetIndent("", IndentSize)
}
encoder.Encode(APISuccessResults{"ok", data})
}
func SendSuccessResultsWithMetadata(res http.ResponseWriter, data interface{}, p interface{}) {
encoder := json.NewEncoder(res)
encoder.SetEscapeHTML(false)
if shouldIndentResponse(res) {
encoder.SetIndent("", IndentSize)
}
encoder.Encode(APISuccessResultsWithMetadata{"ok", data, p})
}
func SendErrorResult(res http.ResponseWriter, err error) {
encoder := json.NewEncoder(res)
encoder.SetEscapeHTML(false)
if shouldIndentResponse(res) {
encoder.SetIndent("", IndentSize)
}
obj, ok := err.(interface{ Status() int })
if ok == true {
res.WriteHeader(obj.Status())
} else {
res.WriteHeader(http.StatusInternalServerError)
}
m := func(r string) string {
if r == "" {
return r
}
return strings.ToUpper(string(r[0])) + string(r[1:])
}(err.Error())
encoder.Encode(APIErrorMessage{"error", m})
}
func SendRaw(res http.ResponseWriter, data interface{}) {
encoder := json.NewEncoder(res)
encoder.SetEscapeHTML(false)
if shouldIndentResponse(res) {
encoder.SetIndent("", IndentSize)
}
encoder.Encode(data)
}
func Page(stuff string) string {
return `<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" name="viewport">
<title>` + Config.Get("general.name").String() + `</title>
<style>
html { background: #f2f3f5; font-size: 16px; font-family: "San Francisco","Roboto","Arial",sans-serif; }
body { text-align: center; padding-top: 50px; text-align: center; margin: 0; }
h1 { font-weight: 200; line-height: 1em; font-size: 40px; }
p { opacity: 0.8; font-size: 1.05em; }
form { max-width: 450px; margin: 0 auto; padding: 0 10px; text-align: left; }
button { padding: 11px 0px; width: 100%; background: #466372; color: white; margin-top: 10px; cursor: pointer; font-weight: bold; border: none; border-radius: 2px; box-shadow: 2px 2px 2px rgb(0 0 0 / 15%); }
input, textarea { display: block; margin: 8px 0; border: none; outline: none; padding: 13px 15px; box-shadow: 2px 2px 2px rgb(0 0 0 / 5%); min-width: 100%; max-width: 100%; max-height: 80px; box-sizing: border-box; border-radius: 2px; }
input, textarea, body { color: #313538; }
input, textarea, button { font-size: inherit; }
</style>
</head>
<body class="common_response_page">
` + stuff + `
<style>
` + Hooks.Get.CSS() + `
` + Config.Get("general.custom_css").String() + `
</style>
</body>
</html>`
}
func RedirectPage(url string) string {
return `<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Refresh" content="0; url=` + url + `" />
</head>
<body>
<script>
location.href = "` + url + `"
</script>
</body>
</html>
`
}
func shouldIndentResponse(res http.ResponseWriter) bool {
reqID := res.Header().Get("X-Request-Id")
if reqID == "" {
return false
} else if strings.HasPrefix(reqID, "API") == false {
return false
}
return true
}