package test

import (
	"context"
	"testing"
	"time"

	"github.com/noahlann/nnet/internal/codec"
	"github.com/noahlann/nnet/internal/request"
	"github.com/noahlann/nnet/internal/response"
	ctxpkg "github.com/noahlann/nnet/pkg/context"
)

func TestContext(t *testing.T) {
	parentCtx := context.Background()
	conn := &mockConnection{id: "test-conn"}

	// 创建 mock Request 和 Response
	req := request.New([]byte("test request"), nil)
	codecRegistry := codec.NewRegistry()
	resp := response.New(conn, nil, codecRegistry, "json")

	ctx := ctxpkg.New(parentCtx, conn, req, resp)

	// 测试 Set 和 Get
	ctx.Set("key1", "value1")
	val := ctx.Get("key1")
	if val == nil {
		t.Error("Expected key1 to be found")
	}
	if val.(string) != "value1" {
		t.Error("Expected 'value1', got:", val)
	}

	// 测试 GetString
	strVal := ctx.GetString("key1")
	if strVal != "value1" {
		t.Error("Expected 'value1', got:", strVal)
	}

	// 测试 GetInt
	ctx.Set("int1", 42)
	intVal := ctx.GetInt("int1")
	if intVal != 42 {
		t.Error("Expected 42, got:", intVal)
	}

	// 测试 GetBool
	ctx.Set("bool1", true)
	boolVal := ctx.GetBool("bool1")
	if !boolVal {
		t.Error("Expected true, got:", boolVal)
	}

	// 测试 Request
	if string(ctx.Request().Raw()) != "test request" {
		t.Error("Expected 'test request'")
	}

	// 测试 Response
	if ctx.Response() == nil {
		t.Error("Expected Response to be non-nil")
	}

	// 测试 Connection
	if ctx.Connection().ID() != "test-conn" {
		t.Error("Expected 'test-conn'")
	}

	// 测试 MustGet
	val = ctx.MustGet("key1")
	if val.(string) != "value1" {
		t.Error("Expected 'value1'")
	}

	// 测试 MustGet panic
	func() {
		defer func() {
			if r := recover(); r == nil {
				t.Error("Expected panic for missing key")
			}
		}()
		ctx.MustGet("nonexistent")
	}()

	// 测试 Value (context.Context interface)
	val = ctx.Value("key1")
	if val == nil {
		t.Error("Expected key1 to be found via Value")
	}
}

func TestContextWithTimeout(t *testing.T) {
	parentCtx, cancel := context.WithTimeout(context.Background(), 100*time.Millisecond)
	defer cancel()

	conn := &mockConnection{id: "test-conn"}
	req := request.New([]byte("test"), nil)
	codecRegistry := codec.NewRegistry()
	resp := response.New(conn, nil, codecRegistry, "json")

	ctx := ctxpkg.New(parentCtx, conn, req, resp)

	// 测试 Deadline
	deadline, ok := ctx.Deadline()
	if !ok {
		t.Error("Expected deadline to be set")
	}
	if deadline.IsZero() {
		t.Error("Expected deadline to be non-zero")
	}

	// 测试 Done
	select {
	case <-ctx.Done():
		t.Error("Context should not be done yet")
	case <-time.After(50 * time.Millisecond):
		// OK
	}

	// 等待超时
	time.Sleep(150 * time.Millisecond)
	select {
	case <-ctx.Done():
		// OK
	default:
		t.Error("Context should be done after timeout")
	}

	// 测试 Err
	if ctx.Err() == nil {
		t.Error("Expected error after timeout")
	}
}

func TestContextGetIntTypes(t *testing.T) {
	parentCtx := context.Background()
	conn := &mockConnection{id: "test-conn"}
	req := request.New([]byte("test"), nil)
	codecRegistry := codec.NewRegistry()
	resp := response.New(conn, nil, codecRegistry, "json")

	ctx := ctxpkg.New(parentCtx, conn, req, resp)

	// 测试 int32
	ctx.Set("int32", int32(32))
	if ctx.GetInt("int32") != 32 {
		t.Error("Expected 32 for int32")
	}

	// 测试 int64
	ctx.Set("int64", int64(64))
	if ctx.GetInt("int64") != 64 {
		t.Error("Expected 64 for int64")
	}

	// 测试无效类型
	ctx.Set("invalid", "not an int")
	if ctx.GetInt("invalid") != 0 {
		t.Error("Expected 0 for invalid type")
	}
}

func TestContextGetStringInvalidType(t *testing.T) {
	parentCtx := context.Background()
	conn := &mockConnection{id: "test-conn"}
	req := request.New([]byte("test"), nil)
	codecRegistry := codec.NewRegistry()
	resp := response.New(conn, nil, codecRegistry, "json")

	ctx := ctxpkg.New(parentCtx, conn, req, resp)

	// 测试无效类型
	ctx.Set("invalid", 123)
	if ctx.GetString("invalid") != "" {
		t.Error("Expected empty string for invalid type")
	}
}

func TestContextGetBoolInvalidType(t *testing.T) {
	parentCtx := context.Background()
	conn := &mockConnection{id: "test-conn"}
	req := request.New([]byte("test"), nil)
	codecRegistry := codec.NewRegistry()
	resp := response.New(conn, nil, codecRegistry, "json")

	ctx := ctxpkg.New(parentCtx, conn, req, resp)

	// 测试无效类型
	ctx.Set("invalid", "not a bool")
	if ctx.GetBool("invalid") {
		t.Error("Expected false for invalid type")
	}
}

func TestContextValue(t *testing.T) {
	// 使用非字符串 key 测试父 context
	parentKey := struct{ name string }{"parent_key"}
	parentCtx := context.WithValue(context.Background(), parentKey, "parent_value")
	conn := &mockConnection{id: "test-conn"}
	req := request.New([]byte("test"), nil)
	codecRegistry := codec.NewRegistry()
	resp := response.New(conn, nil, codecRegistry, "json")

	ctx := ctxpkg.New(parentCtx, conn, req, resp)

	// 测试字符串 key（从内部 values map 获取）
	ctx.Set("ctx_key", "ctx_value")
	val := ctx.Value("ctx_key")
	if val == nil {
		t.Error("Expected ctx_key to be found")
	}
	if val.(string) != "ctx_value" {
		t.Errorf("Expected 'ctx_value', got: %v", val)
	}

	// 测试非字符串 key（应该从父 context 获取）
	val = ctx.Value(parentKey)
	if val == nil {
		t.Error("Expected parent_key to be found from parent context")
	}
	if val.(string) != "parent_value" {
		t.Errorf("Expected 'parent_value', got: %v", val)
	}
}

// mockConnection 模拟连接
type mockConnection struct {
	id string
}

func (m *mockConnection) ID() string {
	return m.id
}

func (m *mockConnection) RemoteAddr() string {
	return "127.0.0.1:6995"
}

func (m *mockConnection) LocalAddr() string {
	return "127.0.0.1:6995"
}

func (m *mockConnection) Write(data []byte) error {
	return nil
}

func (m *mockConnection) Close() error {
	return nil
}