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api_media_extended_description.go
249 lines (174 loc) · 5.38 KB
/
api_media_extended_description.go
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// Image notes API
package main
import (
"encoding/json"
"fmt"
"net/http"
"os"
"strconv"
"github.com/gorilla/mux"
)
type ExtendedDescriptionSetBody struct {
ExtendedDescription string `json:"ext_desc"`
}
type ExtendedDescriptionSetResponse struct {
Url string `json:"url"`
}
func api_setExtendedDescription(response http.ResponseWriter, request *http.Request) {
session := GetSessionFromRequest(request)
if session == nil {
ReturnAPIError(response, 401, "UNAUTHORIZED", "You must provide a valid active session to use this API.")
return
}
if !session.write {
ReturnAPIError(response, 403, "ACCESS_DENIED", "Your current session does not have permission to make use of this API.")
return
}
vars := mux.Vars(request)
media_id, err := strconv.ParseUint(vars["mid"], 10, 64)
if err != nil {
response.WriteHeader(400)
return
}
var p ExtendedDescriptionSetBody
err = json.NewDecoder(request.Body).Decode(&p)
if err != nil {
response.WriteHeader(400)
return
}
assetData := []byte(p.ExtendedDescription)
result := ThumbnailAPIResponse{
Url: "",
}
if len(assetData) > 0 {
// Encrypt the description file
desc_encrypted_file, err := EncryptAssetData(assetData, session.key)
if err != nil {
LogError(err)
ReturnAPIError(response, 500, "INTERNAL_ERROR", "Internal server error, Check the logs for details.")
return
}
// Put the description into the media assets
media := GetVault().media.AcquireMediaResource(media_id)
if media == nil {
os.Remove(desc_encrypted_file)
ReturnAPIError(response, 404, "NOT_FOUND", "Media not found")
return
}
meta, err := media.StartWrite(session.key)
if err != nil {
LogError(err)
os.Remove(desc_encrypted_file)
GetVault().media.ReleaseMediaResource(media_id)
ReturnAPIError(response, 500, "INTERNAL_ERROR", "Internal server error, Check the logs for details.")
return
}
if meta == nil {
media.CancelWrite()
os.Remove(desc_encrypted_file)
GetVault().media.ReleaseMediaResource(media_id)
ReturnAPIError(response, 404, "NOT_FOUND", "Media not found")
return
}
desc_asset := meta.NextAssetID
meta.NextAssetID++
success, asset_path, asset_lock := media.AcquireAsset(desc_asset, ASSET_SINGLE_FILE)
if !success {
media.CancelWrite()
os.Remove(desc_encrypted_file)
GetVault().media.ReleaseMediaResource(media_id)
ReturnAPIError(response, 404, "NOT_FOUND", "Media not found")
return
}
asset_lock.RequestWrite()
asset_lock.StartWrite()
// Move temp file
err = RenameAndReplace(desc_encrypted_file, asset_path)
asset_lock.EndWrite()
media.ReleaseAsset(desc_asset)
if err != nil {
LogError(err)
media.CancelWrite()
os.Remove(desc_encrypted_file)
GetVault().media.ReleaseMediaResource(media_id)
ReturnAPIError(response, 500, "INTERNAL_ERROR", "Internal server error, Check the logs for details.")
return
}
// Change metadata
if meta.HasExtendedDescription {
// Remove old asset
oldAsset := meta.ExtendedDescriptionAsset
success, asset_path, asset_lock = media.AcquireAsset(oldAsset, ASSET_SINGLE_FILE)
if success {
asset_lock.RequestWrite()
asset_lock.StartWrite()
os.Remove(asset_path)
asset_lock.EndWrite()
media.ReleaseAsset(oldAsset)
}
}
meta.HasExtendedDescription = true
meta.ExtendedDescriptionAsset = desc_asset
result.Url = "/assets/b/" + fmt.Sprint(media_id) + "/" + fmt.Sprint(desc_asset) + "/ext_desc.txt" + "?fp=" + GetVault().credentials.GetFingerprint()
// Save
err = media.EndWrite(meta, session.key, false)
if err != nil {
LogError(err)
GetVault().media.ReleaseMediaResource(media_id)
ReturnAPIError(response, 500, "INTERNAL_ERROR", "Internal server error, Check the logs for details.")
return
}
GetVault().media.ReleaseMediaResource(media_id)
} else {
// Put the description into the media assets
media := GetVault().media.AcquireMediaResource(media_id)
if media == nil {
ReturnAPIError(response, 404, "NOT_FOUND", "Media not found")
return
}
meta, err := media.StartWrite(session.key)
if err != nil {
LogError(err)
GetVault().media.ReleaseMediaResource(media_id)
ReturnAPIError(response, 500, "INTERNAL_ERROR", "Internal server error, Check the logs for details.")
return
}
if meta == nil {
media.CancelWrite()
GetVault().media.ReleaseMediaResource(media_id)
ReturnAPIError(response, 404, "NOT_FOUND", "Media not found")
return
}
// Change metadata
if meta.HasExtendedDescription {
// Remove old asset
oldAsset := meta.ExtendedDescriptionAsset
success, asset_path, asset_lock := media.AcquireAsset(oldAsset, ASSET_SINGLE_FILE)
if success {
asset_lock.RequestWrite()
asset_lock.StartWrite()
os.Remove(asset_path)
asset_lock.EndWrite()
media.ReleaseAsset(oldAsset)
}
}
meta.HasExtendedDescription = false
// Save
err = media.EndWrite(meta, session.key, false)
if err != nil {
LogError(err)
GetVault().media.ReleaseMediaResource(media_id)
ReturnAPIError(response, 500, "INTERNAL_ERROR", "Internal server error, Check the logs for details.")
return
}
GetVault().media.ReleaseMediaResource(media_id)
}
// Response
jsonResult, err := json.Marshal(result)
if err != nil {
LogError(err)
ReturnAPIError(response, 500, "INTERNAL_ERROR", "Internal server error, Check the logs for details.")
return
}
ReturnAPI_JSON(response, request, jsonResult)
}