package llamaswap

import (
	"context"
	"io"
	"net/http"
	"net/http/httptest"
	"testing"

	"gitea.stevedudenhoeffer.com/steve/majordomo/audio"
)

func TestSpeakWithReferenceUsesCloneRoute(t *testing.T) {
	var gotPath, gotInput, gotVoice, gotFilename string
	var gotRef []byte
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		gotPath = r.URL.Path
		if err := r.ParseMultipartForm(1 << 20); err != nil {
			t.Fatalf("parse multipart: %v", err)
		}
		gotInput = r.FormValue("input")
		gotVoice = r.FormValue("voice")
		f, hdr, err := r.FormFile("voice_file")
		if err != nil {
			t.Fatalf("voice_file part: %v", err)
		}
		defer f.Close()
		gotRef, _ = io.ReadAll(f)
		gotFilename = hdr.Filename
		w.Header().Set("Content-Type", "audio/wav")
		_, _ = w.Write(wavFixture())
	}))
	defer srv.Close()

	p := New(WithBaseURL(srv.URL), WithHTTPClient(srv.Client()))
	sm, _ := p.SpeechModel("chatterbox")
	res, err := sm.Speak(context.Background(),
		audio.SpeechRequest{Input: "hello in my voice", Voice: "narrator"},
		audio.WithReferenceAudio([]byte("REFWAV"), "audio/wav"))
	if err != nil {
		t.Fatalf("Speak: %v", err)
	}
	if gotPath != "/upstream/chatterbox/v1/audio/speech/upload" {
		t.Errorf("path = %q, want clone route", gotPath)
	}
	if gotInput != "hello in my voice" || gotVoice != "narrator" {
		t.Errorf("input/voice = %q/%q", gotInput, gotVoice)
	}
	if string(gotRef) != "REFWAV" || gotFilename != "audio.wav" {
		t.Errorf("ref = %q name = %q", gotRef, gotFilename)
	}
	if res.MIME != "audio/wav" || len(res.Audio) == 0 {
		t.Errorf("result = %q/%d bytes", res.MIME, len(res.Audio))
	}
}

func TestSpeakWithReferenceDefaultsToWavMIME(t *testing.T) {
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if err := r.ParseMultipartForm(1 << 20); err != nil {
			t.Fatalf("parse multipart: %v", err)
		}
		for _, k := range []string{"voice", "response_format", "speed"} {
			if v, ok := r.MultipartForm.Value[k]; ok {
				t.Errorf("unset request sent %q = %v, want omitted", k, v)
			}
		}
		w.Header()["Content-Type"] = nil // no declared type at all
		_, _ = w.Write([]byte("RAWAUDIO"))
	}))
	defer srv.Close()

	p := New(WithBaseURL(srv.URL), WithHTTPClient(srv.Client()))
	sm, _ := p.SpeechModel("chatterbox")
	res, err := sm.Speak(context.Background(),
		audio.SpeechRequest{Input: "hi"},
		audio.WithReferenceAudio([]byte("REF"), ""))
	if err != nil {
		t.Fatalf("Speak: %v", err)
	}
	// The clone route's default container is wav, not the JSON route's mp3.
	if res.MIME != "audio/wav" {
		t.Errorf("MIME = %q, want audio/wav fallback", res.MIME)
	}
}

func TestSpeakWithoutReferenceKeepsJSONRoute(t *testing.T) {
	var gotPath, gotContentType string
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		gotPath = r.URL.Path
		gotContentType = r.Header.Get("Content-Type")
		_, _ = w.Write([]byte("MP3"))
	}))
	defer srv.Close()

	p := New(WithBaseURL(srv.URL), WithHTTPClient(srv.Client()))
	sm, _ := p.SpeechModel("chatterbox")
	if _, err := sm.Speak(context.Background(), audio.SpeechRequest{Input: "hi"}); err != nil {
		t.Fatalf("Speak: %v", err)
	}
	if gotPath != "/v1/audio/speech" || gotContentType != "application/json" {
		t.Errorf("path/content-type = %q/%q, want JSON route", gotPath, gotContentType)
	}
}

func TestTranscribeTranslateForcesAutoLanguage(t *testing.T) {
	var gotTranslate, gotLanguage string
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if err := r.ParseMultipartForm(1 << 20); err != nil {
			t.Fatalf("parse multipart: %v", err)
		}
		gotTranslate = r.FormValue("translate")
		gotLanguage = r.FormValue("language")
		_, _ = w.Write([]byte(`{"text":"hello"}`))
	}))
	defer srv.Close()

	p := New(WithBaseURL(srv.URL), WithHTTPClient(srv.Client()))
	tm, _ := p.TranscriptionModel("whisper-large-v3-turbo")
	res, err := tm.Transcribe(context.Background(),
		audio.TranscriptionRequest{Audio: []byte("AUDIO")},
		audio.WithTranslate())
	if err != nil {
		t.Fatalf("Transcribe: %v", err)
	}
	// whisper.cpp's server default language is "en", which would skip
	// translation — translate must force auto-detection when no explicit
	// language hint was given.
	if gotTranslate != "true" || gotLanguage != "auto" {
		t.Errorf("translate/language = %q/%q, want true/auto", gotTranslate, gotLanguage)
	}
	if res.Text != "hello" {
		t.Errorf("text = %q", res.Text)
	}
}

func TestTranscribeTranslateKeepsExplicitLanguage(t *testing.T) {
	var gotTranslate, gotLanguage string
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if err := r.ParseMultipartForm(1 << 20); err != nil {
			t.Fatalf("parse multipart: %v", err)
		}
		gotTranslate = r.FormValue("translate")
		gotLanguage = r.FormValue("language")
		_, _ = w.Write([]byte(`{"text":"hello"}`))
	}))
	defer srv.Close()

	p := New(WithBaseURL(srv.URL), WithHTTPClient(srv.Client()))
	tm, _ := p.TranscriptionModel("whisper-large-v3-turbo")
	if _, err := tm.Transcribe(context.Background(),
		audio.TranscriptionRequest{Audio: []byte("AUDIO"), Language: "de", Translate: true}); err != nil {
		t.Fatalf("Transcribe: %v", err)
	}
	if gotTranslate != "true" || gotLanguage != "de" {
		t.Errorf("translate/language = %q/%q, want true/de", gotTranslate, gotLanguage)
	}
}

func TestTranscribeWithoutTranslateOmitsFields(t *testing.T) {
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if err := r.ParseMultipartForm(1 << 20); err != nil {
			t.Fatalf("parse multipart: %v", err)
		}
		for _, k := range []string{"translate", "language"} {
			if v, ok := r.MultipartForm.Value[k]; ok {
				t.Errorf("unset request sent %q = %v, want omitted", k, v)
			}
		}
		_, _ = w.Write([]byte(`{"text":"hi"}`))
	}))
	defer srv.Close()

	p := New(WithBaseURL(srv.URL), WithHTTPClient(srv.Client()))
	tm, _ := p.TranscriptionModel("whisper-large-v3-turbo")
	if _, err := tm.Transcribe(context.Background(),
		audio.TranscriptionRequest{Audio: []byte("AUDIO")}); err != nil {
		t.Fatalf("Transcribe: %v", err)
	}
}