Show stored images to the user

[onechat] / telegram_fake_helper_test.go

diff --git a/telegram_fake_helper_test.go b/telegram_fake_helper_test.go
index 3056aa133372b3f79fb51632238609359033bc65..b71eee038ebf084da3481bd63c3643cda8600c0d 100644 (file)
--- a/telegram_fake_helper_test.go
+++ b/telegram_fake_helper_test.go
@@ -2,8 +2,10 @@ package main
 
 import (
        "encoding/json"
+       "errors"
        "fmt"
        "io"
+       "mime/multipart"
        "net/http"
        "net/http/httptest"
        "strings"
@@ -45,6 +47,7 @@ type TelegramFake struct {
        stall   func(call TelegramFakeCall) bool
        added   chan struct{}
        stopped chan struct{}
+       images  map[string][]byte
 }
 
 // Add makes update available to getUpdates.
@@ -86,7 +89,49 @@ func (f *TelegramFake) Sent() []string {
        return texts
 }
 
+func (f *TelegramFake) Image(id string, data []byte) {
+       f.mutex.Lock()
+       defer f.mutex.Unlock()
+
+       if f.images == nil {
+               f.images = make(map[string][]byte)
+       }
+
+       f.images[id] = data
+}
+
+// RoundTrip handles a request in memory, so synctest can control its timers.
+func (f *TelegramFake) RoundTrip(request *http.Request) (*http.Response, error) {
+       response := httptest.NewRecorder()
+       f.serve(response, request)
+
+       ctx := request.Context()
+       if ctx.Err() != nil {
+               return nil, ctx.Err()
+       }
+
+       return response.Result(), nil
+}
+
 func (f *TelegramFake) serve(w http.ResponseWriter, r *http.Request) {
+       id, file := strings.CutPrefix(r.URL.Path, "/file/bot"+telegramTestToken+"/")
+       if file {
+               f.mutex.Lock()
+
+               data, exists := f.images[id]
+               f.mutex.Unlock()
+
+               if !exists {
+                       http.NotFound(w, r)
+
+                       return
+               }
+
+               _, _ = w.Write(data)
+
+               return
+       }
+
        method, found := strings.CutPrefix(r.URL.Path, "/bot"+telegramTestToken+"/")
        if !found {
                http.Error(w, `{"ok":false,"error_code":404,"description":"Not Found"}`, http.StatusNotFound)
@@ -96,7 +141,38 @@ func (f *TelegramFake) serve(w http.ResponseWriter, r *http.Request) {
 
        var params map[string]any
 
-       err := json.NewDecoder(r.Body).Decode(&params)
+       var err error
+
+       if strings.HasPrefix(r.Header.Get("Content-Type"), "multipart/form-data;") {
+               err = r.ParseMultipartForm(imageMaxBytes + (1 << 20))
+               if err == nil {
+                       params = make(map[string]any)
+                       for key, values := range r.MultipartForm.Value {
+                               params[key] = values[0]
+                       }
+
+                       for key, files := range r.MultipartForm.File {
+                               var file multipart.File
+
+                               file, err = files[0].Open()
+                               if err != nil {
+                                       break
+                               }
+
+                               params[key], err = io.ReadAll(file)
+                               err = errors.Join(err, file.Close())
+                               params[key+"_name"] = files[0].Filename
+                               if err != nil {
+                                       break
+                               }
+                       }
+
+                       err = errors.Join(err, r.MultipartForm.RemoveAll())
+               }
+       } else {
+               err = json.NewDecoder(r.Body).Decode(&params)
+       }
+
        if err != nil {
                http.Error(w, err.Error(), http.StatusBadRequest)
 
@@ -146,6 +222,15 @@ func (f *TelegramFake) serve(w http.ResponseWriter, r *http.Request) {
        call.ok = true
        f.record(call)
 
+       if method == "getFile" {
+               _ = json.NewEncoder(w).Encode(map[string]any{
+                       "ok":     true,
+                       "result": map[string]any{"file_path": params["file_id"]},
+               })
+
+               return
+       }
+
        if method != "getUpdates" {
                _, _ = io.WriteString(w, `{"ok":true,"result":true}`)
                return
@@ -217,6 +302,23 @@ func newTelegramFake(t *testing.T) *TelegramFake {
        return f
 }
 
+// newTelegramLocalFake returns the same fake API without network goroutines.
+// Its RoundTrip handles requests directly for tests with fake time.
+func newTelegramLocalFake(t *testing.T) *TelegramFake {
+       t.Helper()
+
+       f := &TelegramFake{
+               Server:  &httptest.Server{URL: "https://example.com"},
+               added:   make(chan struct{}, 1),
+               stopped: make(chan struct{}),
+       }
+       t.Cleanup(func() {
+               close(f.stopped)
+       })
+
+       return f
+}
+
 // telegramOwnerMessage returns a text message of the owner in the private chat.
 func telegramOwnerMessage(text string) *TelegramMessage {
        return &TelegramMessage{