package ai

import (
	"context"
	"os/exec"
	"strings"
	"testing"
)

func TestTTSRejectsExcessPendingAudioWithoutRetry(t *testing.T) {
	if _, err := exec.LookPath("ffmpeg"); err != nil {
		t.Skip("Bailian audio conversion requires ffmpeg")
	}
	task, providers := currentFixture(t, "full_ai")
	task = changeCurrentAgent(t, task, func(agent map[string]any) {
		conversation := agent["conversation"].(map[string]any)
		conversation["sentence_max_chars"] = 2
		conversation["max_pending_audio_chunks"] = 1
	})
	endpoint, requests := mockBailianTTS(t, []byte{1, 0}, nil)
	p := providers["tts-example"]
	p.Endpoint = endpoint
	providers[p.ProviderRef] = p
	bound, err := Bind(task, providers)
	if err != nil {
		t.Fatal(err)
	}
	if _, err := bound.SynthesizeReply(context.Background(), "你好世界"); err == nil || !strings.Contains(err.Error(), "pending audio") || strings.Contains(err.Error(), p.Credential) {
		t.Fatalf("explicit pending-audio bound was ignored or leaked credentials: %v", err)
	}
	if requests.Load() != 1 {
		t.Fatalf("provider must not retry/bill a second time: requests=%d", requests.Load())
	}
}

func TestReplyChunksUnicodeByApprovedSentenceLimit(t *testing.T) {
	if _, err := exec.LookPath("ffmpeg"); err != nil {
		t.Skip("Bailian audio conversion requires ffmpeg")
	}
	task, providers := currentFixture(t, "full_ai")
	task = changeCurrentAgent(t, task, func(agent map[string]any) {
		conversation := agent["conversation"].(map[string]any)
		conversation["sentence_max_chars"] = 3
		conversation["max_pending_audio_chunks"] = 3
	})
	texts := make(chan string, 3)
	endpoint, requests := mockBailianTTS(t, []byte{1, 0}, func(text string) { texts <- text })
	p := providers["tts-example"]
	p.Endpoint = endpoint
	providers[p.ProviderRef] = p
	bound, err := Bind(task, providers)
	if err != nil {
		t.Fatal(err)
	}
	audio, err := bound.SynthesizeReply(context.Background(), "你好世界，再见")
	if err != nil || len(audio) != 6 || requests.Load() != 3 {
		t.Fatalf("reply must synthesize all bounded chunks: len=%d requests=%d err=%v", len(audio), requests.Load(), err)
	}
	for _, want := range []string{"你好世", "界，再", "见"} {
		if got := <-texts; got != want {
			t.Fatalf("Unicode reply was lost/reordered while splitting: got=%q want=%q", got, want)
		}
	}
}