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package api
import (
"encoding/json"
"log"
"net/http"
"github.com/ponzu-cms/ponzu/system/db"
"github.com/ponzu-cms/ponzu/system/item"
)
// Deleteable accepts or rejects update POST requests to endpoints such as:
// /api/content/delete?type=Review&id=1
type Deleteable interface {
// Delete enables external clients to delete content of a specific type
Delete(http.ResponseWriter, *http.Request) error
}
func deleteContentHandler(res http.ResponseWriter, req *http.Request) {
if req.Method != http.MethodPost {
res.WriteHeader(http.StatusMethodNotAllowed)
return
}
err := req.ParseMultipartForm(1024 * 1024 * 4) // maxMemory 4MB
if err != nil {
log.Println("[Delete] error:", err)
res.WriteHeader(http.StatusInternalServerError)
return
}
t := req.URL.Query().Get("type")
if t == "" {
res.WriteHeader(http.StatusBadRequest)
return
}
p, found := item.Types[t]
if !found {
log.Println("[Delete] attempt to delete content of unknown type:", t, "from:", req.RemoteAddr)
res.WriteHeader(http.StatusNotFound)
return
}
id := req.URL.Query().Get("id")
if !db.IsValidID(id) {
log.Println("[Delete] attempt to delete content with missing or invalid id from:", req.RemoteAddr)
res.WriteHeader(http.StatusBadRequest)
return
}
post := p()
ext, ok := post.(Deleteable)
if !ok {
log.Println("[Delete] rejected non-deleteable type:", t, "from:", req.RemoteAddr)
res.WriteHeader(http.StatusBadRequest)
return
}
hook, ok := post.(item.Hookable)
if !ok {
log.Println("[Delete] error: Type", t, "does not implement item.Hookable or embed item.Item.")
res.WriteHeader(http.StatusBadRequest)
return
}
data, err := db.Content(t + ":" + id)
if err != nil {
log.Println("Error in db.Content ", t+":"+id, err)
res.WriteHeader(http.StatusBadRequest)
return
}
err = json.Unmarshal(data, post)
if err != nil {
log.Println("Error unmarshalling ", t, "=", id, err, " Hooks will be called on a zero-value.")
}
err = hook.BeforeAPIDelete(res, req)
if err != nil {
log.Println("[Delete] error calling BeforeAPIDelete:", err)
if err == ErrNoAuth {
// BeforeAPIDelete can check user.IsValid(req) for auth
res.WriteHeader(http.StatusUnauthorized)
}
return
}
err = ext.Delete(res, req)
if err != nil {
log.Println("[Delete] error calling Delete:", err)
if err == ErrNoAuth {
// Delete can check user.IsValid(req) or other forms of validation for auth
res.WriteHeader(http.StatusUnauthorized)
}
return
}
err = hook.BeforeDelete(res, req)
if err != nil {
log.Println("[Delete] error calling BeforeSave:", err)
return
}
err = db.DeleteContent(t + ":" + id)
if err != nil {
log.Println("[Delete] error calling DeleteContent:", err)
res.WriteHeader(http.StatusInternalServerError)
return
}
err = hook.AfterDelete(res, req)
if err != nil {
log.Println("[Delete] error calling AfterDelete:", err)
return
}
err = hook.AfterAPIDelete(res, req)
if err != nil {
log.Println("[Delete] error calling AfterAPIDelete:", err)
return
}
// create JSON response to send data back to client
var data = map[string]interface{}{
"id": id,
"status": "deleted",
"type": t,
}
resp := map[string]interface{}{
"data": []map[string]interface{}{
data,
},
}
j, err := json.Marshal(resp)
if err != nil {
log.Println("[Delete] error marshalling response to JSON:", err)
res.WriteHeader(http.StatusInternalServerError)
return
}
res.Header().Set("Content-Type", "application/json")
_, err = res.Write(j)
if err != nil {
log.Println("[Delete] error writing response:", err)
return
}
}
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