package gateway

import (
	"context"
	"encoding/base64"
	"encoding/json"
	"net/http"
	"testing"

	"git.yeij.top/AskaEth/Cyrene_v2/internal/auth"
	"git.yeij.top/AskaEth/Cyrene_v2/internal/runtime/loop"
	"git.yeij.top/AskaEth/Cyrene_v2/internal/runtime/multimodal/voice"
)

// signalVoice 是同时实现 voiceProviderReporter 的 VoiceService，使测试既能
// 控制 STT/TTS 结果，也能控制所上报的 provider 档位。
type signalVoice struct {
	text   string
	audio  voice.Audio
	rung   string
	sttErr error
	ttsErr error
}

func (s *signalVoice) STT(_ context.Context, _ voice.Audio) (string, error) {
	return s.text, s.sttErr
}

func (s *signalVoice) TTS(_ context.Context, _ string) (voice.Audio, error) {
	return s.audio, s.ttsErr
}

func (s *signalVoice) CloneVoice(_ context.Context, _, _ string) (string, error) { return "", nil }

func (s *signalVoice) STTWithProvider(_ context.Context, _ voice.Audio) (string, string, error) {
	return s.text, s.rung, s.sttErr
}

func (s *signalVoice) TTSWithProvider(_ context.Context, _ string) (voice.Audio, string, error) {
	return s.audio, s.rung, s.ttsErr
}

func TestHandleTranscribe_SilentSignal(t *testing.T) {
	env := newEnv(t, nil, false)
	env.srv.SetVoice(&signalVoice{rung: "silent"})

	token := env.token(t, auth.RoleOwner)
	resp, body := doReq(t, http.MethodPost, env.ts.URL+"/api/v1/audio/transcribe", map[string]any{
		"audio": base64.StdEncoding.EncodeToString([]byte("raw")),
	}, token)
	if resp.StatusCode != http.StatusOK {
		t.Fatalf("status = %d, body = %s", resp.StatusCode, body)
	}
	var data struct {
		Text     string `json:"text"`
		Provider string `json:"provider"`
	}
	if err := json.Unmarshal(decodeBody(t, body)["data"], &data); err != nil {
		t.Fatalf("decode data: %v (body=%s)", err, body)
	}
	if data.Text != "" || data.Provider != "silent" {
		t.Errorf("data = %+v, want empty text + provider silent", data)
	}
}

func TestHandleTranscribe_SilentFallbackWithoutReporter(t *testing.T) {
	env := newEnv(t, nil, false)
	// audioStubVoice 没有实现 voiceProviderReporter，因此处理函数仍须把
	// 空转写标为 silent。
	env.srv.SetVoice(&audioStubVoice{})

	token := env.token(t, auth.RoleOwner)
	resp, body := doReq(t, http.MethodPost, env.ts.URL+"/api/v1/audio/transcribe", map[string]any{
		"audio": base64.StdEncoding.EncodeToString([]byte("raw")),
	}, token)
	if resp.StatusCode != http.StatusOK {
		t.Fatalf("status = %d, body = %s", resp.StatusCode, body)
	}
	var data struct {
		Provider string `json:"provider"`
	}
	if err := json.Unmarshal(decodeBody(t, body)["data"], &data); err != nil {
		t.Fatalf("decode data: %v (body=%s)", err, body)
	}
	if data.Provider != "silent" {
		t.Errorf("provider = %q, want silent (body=%s)", data.Provider, body)
	}
}

func TestHandleTranscribe_SuccessOmitsProvider(t *testing.T) {
	env := newEnv(t, nil, false)
	env.srv.SetVoice(&signalVoice{text: "你好", rung: "cloud"})

	token := env.token(t, auth.RoleOwner)
	resp, body := doReq(t, http.MethodPost, env.ts.URL+"/api/v1/audio/transcribe", map[string]any{
		"audio": base64.StdEncoding.EncodeToString([]byte("raw")),
	}, token)
	if resp.StatusCode != http.StatusOK {
		t.Fatalf("status = %d, body = %s", resp.StatusCode, body)
	}
	var raw map[string]json.RawMessage
	if err := json.Unmarshal(decodeBody(t, body)["data"], &raw); err != nil {
		t.Fatalf("decode data: %v (body=%s)", err, body)
	}
	if _, present := raw["provider"]; present {
		t.Errorf("provider must be omitted on a non-empty transcription: %s", body)
	}
}

func TestHandleSpeech_EmptyAudioSignal(t *testing.T) {
	env := newEnv(t, nil, false)
	env.srv.SetVoice(&signalVoice{rung: "silent"})

	token := env.token(t, auth.RoleOwner)
	resp, body := doReq(t, http.MethodPost, env.ts.URL+"/api/v1/audio/speech", map[string]any{
		"text": "你好",
	}, token)
	if resp.StatusCode != http.StatusInternalServerError {
		t.Fatalf("status = %d, want 500 (body=%s)", resp.StatusCode, body)
	}
	if got := resp.Header.Get(voiceProviderHeader); got != "silent" {
		t.Errorf("%s = %q, want silent", voiceProviderHeader, got)
	}
	var env2 struct {
		Error struct {
			Code string `json:"code"`
		} `json:"error"`
	}
	if err := json.Unmarshal(body, &env2); err != nil {
		t.Fatalf("decode error: %v (body=%s)", err, body)
	}
	if env2.Error.Code != "tts_empty" {
		t.Errorf("error code = %q, want tts_empty (body=%s)", env2.Error.Code, body)
	}
}

func TestHubVoiceOutput_SilentSignal(t *testing.T) {
	t.Parallel()
	hb := newTestHub(&stubRunner{res: &loop.Result{Text: "你好", Steps: 1, StopReason: "stop"}}, nil)
	hb.voice = &signalVoice{text: "你好", rung: "silent"}
	// 自 design/11 §7.2 B 起 voice_input 是面向主人的指令，因此驱动它的连接
	// 必须携带 owner/admin claims。
	c := newOwnerConn(hb, 32)
	hb.register(c)

	c.route(wsInbound{Type: "voice_input", Data: json.RawMessage(`{"audio":"aGVsbG8=","format":"wav"}`)})
	ev := readFakeFrame(t, c)
	if ev.Type != wsVoiceOutput {
		t.Fatalf("frame type = %q, want voice_output (frame=%+v)", ev.Type, ev)
	}
	r, ok := ev.Data.(map[string]any)
	if !ok {
		t.Fatalf("data = %T, want map[string]any", ev.Data)
	}
	if r["provider"] != "silent" {
		t.Errorf("provider = %v, want silent (frame=%+v)", r["provider"], ev.Data)
	}
}

func TestHubVoiceOutput_SuccessOmitsProvider(t *testing.T) {
	t.Parallel()
	hb := newTestHub(&stubRunner{res: &loop.Result{Text: "你好", Steps: 1, StopReason: "stop"}}, nil)
	hb.voice = &signalVoice{
		text:  "你好",
		audio: voice.Audio{Format: "wav", Data: []byte("audio-bytes")},
		rung:  "edge-tts",
	}
	c := newOwnerConn(hb, 32)
	hb.register(c)

	c.route(wsInbound{Type: "voice_input", Data: json.RawMessage(`{"audio":"aGVsbG8=","format":"wav"}`)})
	ev := readFakeFrame(t, c)
	if ev.Type != wsVoiceOutput {
		t.Fatalf("frame type = %q, want voice_output (frame=%+v)", ev.Type, ev)
	}
	r, ok := ev.Data.(map[string]any)
	if !ok {
		t.Fatalf("data = %T, want map[string]any", ev.Data)
	}
	if _, present := r["provider"]; present {
		t.Errorf("provider must be omitted for non-empty audio: %+v", ev.Data)
	}
}