/
asset.go
107 lines (94 loc) · 2.79 KB
/
asset.go
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package handlers
import (
"net/http"
"strconv"
"github.com/swagchat/chat-api/models"
"github.com/swagchat/chat-api/storage"
"github.com/swagchat/chat-api/utils"
"github.com/go-zoo/bone"
)
func SetAssetMux() {
Mux.PostFunc(utils.AppendStrings("/", utils.API_VERSION, "/assets"), colsHandler(PostAsset))
Mux.GetFunc(utils.AppendStrings("/", utils.API_VERSION, "/assets/#assetId^[a-z0-9-]$"), GetAsset)
}
func PostAsset(w http.ResponseWriter, r *http.Request) {
err := r.ParseMultipartForm(32 << 20)
if err != nil {
problemDetail := &models.ProblemDetail{
Title: "MultipartForm parse error. (Create asset item)",
ErrorName: models.ERROR_NAME_INVALID_JSON,
}
respondErr(w, r, http.StatusBadRequest, problemDetail)
return
}
file, header, err := r.FormFile("asset")
if err != nil {
problemDetail := &models.ProblemDetail{
Title: "Form value error. (Create asset item)",
ErrorName: models.ERROR_NAME_INVALID_PARAM,
InvalidParams: []models.InvalidParam{
models.InvalidParam{
Name: "asset",
Reason: "asset is required, but it's empty.",
},
},
}
respondErr(w, r, http.StatusBadRequest, problemDetail)
return
}
defer file.Close()
var extension string
contentType := header.Header.Get("Content-Type")
switch contentType {
case "image/jpeg":
extension = ".jpg"
case "image/png":
extension = ".png"
default:
problemDetail := &models.ProblemDetail{
Title: "Unsupported file. (Create asset item)",
ErrorName: models.ERROR_NAME_INVALID_PARAM,
InvalidParams: []models.InvalidParam{
models.InvalidParam{
Name: "Content-Type",
Reason: utils.AppendStrings("Content-Type is image/jpeg or image/png, but it's ", contentType),
},
},
}
respondErr(w, r, http.StatusBadRequest, problemDetail)
return
}
storageProvider := storage.GetProvider()
assetId := utils.CreateUuid()
assetInfo := &storage.AssetInfo{
FileName: utils.AppendStrings(assetId, extension),
Data: file,
}
sourceUrl, problemDetail := storageProvider.Post(assetInfo)
if problemDetail != nil {
respondErr(w, r, problemDetail.Status, problemDetail)
return
}
asset := &models.Asset{
AssetId: assetId,
SourceUrl: sourceUrl,
Mime: header.Header.Get("Content-Type"),
}
respond(w, r, http.StatusCreated, "application/json", asset)
}
func GetAsset(w http.ResponseWriter, r *http.Request) {
assetId := bone.GetValue(r, "assetId")
storageProvider := storage.GetProvider()
assetInfo := &storage.AssetInfo{
FileName: assetId,
}
bytes, problemDetail := storageProvider.Get(assetInfo)
if problemDetail != nil {
respondErr(w, r, problemDetail.Status, problemDetail)
return
}
w.Header().Set("Content-Length", strconv.Itoa(len(bytes)))
w.Header().Set("Content-Type", http.DetectContentType(bytes))
w.WriteHeader(http.StatusOK)
w.Write(bytes)
}