package main

import (
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"os"
	"path/filepath"
	"strings"
	"testing"
)

func TestVoiceRegistryRefresh(t *testing.T) {
	dir := t.TempDir()

	// Create a voice directory
	voiceDir := filepath.Join(dir, "test-voice")
	os.MkdirAll(voiceDir, 0o755)
	info := map[string]string{"name": "test-voice", "language": "en", "type": "coqui-tts", "created_at": "2024-01-01"}
	infoData, _ := json.Marshal(info)
	os.WriteFile(filepath.Join(voiceDir, "model_info.json"), infoData, 0o644)
	os.WriteFile(filepath.Join(voiceDir, "model.pth"), []byte("fake"), 0o644)

	vr := newVoiceRegistry(dir)
	count := vr.refresh()
	if count != 1 {
		t.Errorf("refresh() = %d, want 1", count)
	}

	voice := vr.get("test-voice")
	if voice == nil {
		t.Fatal("expected voice 'test-voice'")
	}
	if voice.Language != "en" {
		t.Errorf("language = %q, want %q", voice.Language, "en")
	}
	if voice.ModelPath != filepath.Join(voiceDir, "model.pth") {
		t.Errorf("model_path = %q", voice.ModelPath)
	}

	voices := vr.listVoices()
	if len(voices) != 1 {
		t.Errorf("listVoices() len = %d, want 1", len(voices))
	}
}

func TestVoiceRegistryMissing(t *testing.T) {
	vr := newVoiceRegistry("/nonexistent/path")
	count := vr.refresh()
	if count != 0 {
		t.Errorf("refresh() = %d, want 0", count)
	}
}

func TestVoiceRegistryNoModel(t *testing.T) {
	dir := t.TempDir()
	voiceDir := filepath.Join(dir, "bad-voice")
	os.MkdirAll(voiceDir, 0o755)
	info := map[string]string{"name": "bad-voice"}
	infoData, _ := json.Marshal(info)
	os.WriteFile(filepath.Join(voiceDir, "model_info.json"), infoData, 0o644)
	// No model.pth

	vr := newVoiceRegistry(dir)
	count := vr.refresh()
	if count != 0 {
		t.Errorf("refresh() = %d, want 0", count)
	}
}

func TestSynthesizeHTTP(t *testing.T) {
	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if r.URL.Path != "/v1/audio/speech" {
			t.Errorf("unexpected path: %s", r.URL.Path)
		}
		if r.Method != http.MethodPost {
			t.Errorf("expected POST, got %s", r.Method)
		}

		var payload map[string]any
		json.NewDecoder(r.Body).Decode(&payload)
		if payload["text"] != "hello" {
			t.Errorf("unexpected text: %v", payload["text"])
		}

		w.Write([]byte{0x01, 0x02, 0x03, 0x04})
	}))
	defer ts.Close()

	// Test the XTTS synthesis HTTP call directly
	client := ts.Client()
	body := `{"text":"hello","speaker":"default","language":"en"}`
	resp, err := client.Post(ts.URL+"/v1/audio/speech", "application/json", strings.NewReader(body))
	if err != nil {
		t.Fatal(err)
	}
	defer resp.Body.Close()
	if resp.StatusCode != 200 {
		t.Errorf("status = %d, want 200", resp.StatusCode)
	}
}

func TestHelperFunctions(t *testing.T) {
	m := map[string]any{"text": "hello", "stream": true, "count": 42}

	if got := strVal(m, "text", ""); got != "hello" {
		t.Errorf("strVal(text) = %q", got)
	}
	if got := strVal(m, "missing", "def"); got != "def" {
		t.Errorf("strVal(missing) = %q", got)
	}
	if got := boolVal(m, "stream", false); !got {
		t.Errorf("boolVal(stream) = %v", got)
	}
	if got := boolVal(m, "missing", true); !got {
		t.Errorf("boolVal(missing) = %v", got)
	}
}

func TestGetEnv(t *testing.T) {
	t.Setenv("MY_TEST_VAR", "value")
	if got := getEnv("MY_TEST_VAR", "fallback"); got != "value" {
		t.Errorf("getEnv = %q", got)
	}
	if got := getEnv("NONEXISTENT_XYZ", "fallback"); got != "fallback" {
		t.Errorf("getEnv = %q", got)
	}
}

func TestGetEnvInt(t *testing.T) {
	t.Setenv("MY_PORT", "8080")
	if got := getEnvInt("MY_PORT", 3000); got != 8080 {
		t.Errorf("getEnvInt = %d", got)
	}
	if got := getEnvInt("NONEXISTENT_XYZ", 3000); got != 3000 {
		t.Errorf("getEnvInt = %d", got)
	}
}

func TestOrDefault(t *testing.T) {
	if got := orDefault("", "en"); got != "en" {
		t.Errorf("orDefault('', 'en') = %q", got)
	}
	if got := orDefault("fr", "en"); got != "fr" {
		t.Errorf("orDefault('fr', 'en') = %q", got)
	}
}