package whisperx

import (
	"context"
	"errors"
	"sync"
	"testing"
)

func TestFakeClientCapturesRequestAndReturnsPath(t *testing.T) {
	fake := &FakeClient{}
	req := TranscribeRequest{SpeakerID: "alice", AudioPath: "audio/alice.flac", OutputRawTranscriptPath: "transcripts/raw/alice.json"}

	res, err := fake.Transcribe(context.Background(), req)
	if err != nil {
		t.Fatalf("Transcribe() error = %v", err)
	}
	requests := fake.RequestsSnapshot()
	if len(requests) != 1 || requests[0].SpeakerID != "alice" {
		t.Fatalf("requests = %#v, want one alice request", requests)
	}
	if res.OutputRawTranscriptPath != req.OutputRawTranscriptPath {
		t.Fatalf("output path = %q, want %q", res.OutputRawTranscriptPath, req.OutputRawTranscriptPath)
	}
}

func TestFakeClientError(t *testing.T) {
	fake := &FakeClient{Err: errors.New("boom")}
	_, err := fake.Transcribe(context.Background(), TranscribeRequest{})
	if err == nil {
		t.Fatal("expected error, got nil")
	}
}

func TestFakeClientRequestsSnapshotSupportsConcurrentCalls(t *testing.T) {
	fake := &FakeClient{}
	const callers = 16
	var group sync.WaitGroup
	group.Add(callers)
	for i := 0; i < callers; i++ {
		go func() {
			defer group.Done()
			if _, err := fake.Transcribe(context.Background(), TranscribeRequest{}); err != nil {
				t.Errorf("Transcribe() error = %v", err)
			}
		}()
	}
	group.Wait()
	if got := len(fake.RequestsSnapshot()); got != callers {
		t.Fatalf("captured requests = %d, want %d", got, callers)
	}
}