package llm

import (
	"context"
	"testing"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

// --- ProviderManager tests ---

func TestNewProviderManager_Cov2(t *testing.T) {
	m := NewProviderManager()
	assert.NotNil(t, m)
}

func TestProviderManager_SetAccountModelResolver_Cov2(t *testing.T) {
	m := NewProviderManager()
	m.SetAccountModelResolver(nil)
	// Should not panic
}

func TestProviderManager_Configure_Empty_Cov2(t *testing.T) {
	m := NewProviderManager()
	err := m.Configure(RuntimeProviderConfig{})
	// May error due to no providers configured
	_ = err
}

func TestWithAccountFeature_Cov2(t *testing.T) {
	ctx := WithAccountFeature(context.Background(), 1, "copilot")
	assert.NotNil(t, ctx)
}

func TestWithTemperatureOverride_Cov2(t *testing.T) {
	ctx := WithTemperatureOverride(context.Background(), 0.7)
	assert.NotNil(t, ctx)
}

// --- AnthropicProvider tests ---

func TestNewAnthropicProvider_Cov2(t *testing.T) {
	p := NewAnthropicProvider(AnthropicProviderConfig{
		APIKey: "test-key",
		Model:  "claude-3-opus",
	})
	assert.NotNil(t, p)
}

func TestNewAnthropicProvider_Defaults_Cov2(t *testing.T) {
	p := NewAnthropicProvider(AnthropicProviderConfig{
		APIKey: "test-key",
	})
	assert.NotNil(t, p)
}

// --- EinoProvider tests ---

func TestNewEinoProvider_Cov2(t *testing.T) {
	p := NewEinoProvider(nil, nil)
	assert.NotNil(t, p)
}

func TestEinoProvider_SetFallbackEmbedder_Cov2(t *testing.T) {
	p := NewEinoProvider(nil, nil)
	p.SetFallbackEmbedder(nil)
	// Should not panic
}

// --- OpenAIProvider tests ---

func TestNewOpenAIProvider_Cov2(t *testing.T) {
	p := NewOpenAIProvider(OpenAIProviderConfig{
		APIKey:  "test-key",
		BaseURL: "http://localhost:8080",
		Model:   "gpt-4",
	})
	assert.NotNil(t, p)
}

func TestNewOpenAIProvider_Defaults_Cov2(t *testing.T) {
	p := NewOpenAIProvider(OpenAIProviderConfig{
		APIKey: "test-key",
	})
	assert.NotNil(t, p)
}

// --- ChatRequest / ChatResponse tests ---

func TestChatRequest_Struct_Cov2(t *testing.T) {
	req := ChatRequest{
		Messages: []ChatMessage{
			{Role: "user", Content: "hello"},
		},
		Temperature: 0.7,
		MaxTokens:   100,
	}
	assert.Len(t, req.Messages, 1)
	assert.Equal(t, 0.7, req.Temperature)
}

func TestChatResponse_Struct_Cov2(t *testing.T) {
	resp := &ChatResponse{
		ID:     "test-id",
		Object: "chat.completion",
		Model:  "test-model",
	}
	assert.Equal(t, "test-id", resp.ID)
}

// --- normalizeRuntimeProviderConfig tests ---

func TestNormalizeRuntimeProviderConfig_Cov2(t *testing.T) {
	cfg := normalizeRuntimeProviderConfig(RuntimeProviderConfig{})
	// Should not panic and return normalized config
	_ = cfg
}

// --- buildProviderSnapshot tests ---

func TestBuildProviderSnapshot_Empty_Cov2(t *testing.T) {
	_, err := buildProviderSnapshot(RuntimeProviderConfig{})
	// Will likely error due to no providers
	_ = err
}

// --- FakeProvider additional tests ---

func TestFakeProvider_ChatCompletionStream_Cov2(t *testing.T) {
	p := NewFakeLLMProvider()
	err := p.ChatCompletionStream(context.Background(), ChatRequest{}, func(chunk StreamChunk) error {
		require.NotNil(t, chunk)
		return nil
	})
	assert.NoError(t, err)
}

func TestFakeProvider_CreateEmbedding_Cov2(t *testing.T) {
	p := NewFakeLLMProvider()
	resp, err := p.CreateEmbedding(context.Background(), EmbeddingRequest{
		Input: []string{"hello"},
	})
	require.NoError(t, err)
	assert.NotNil(t, resp)
}