package wecom

import (
	"bytes"
	"context"
	"crypto/aes"
	"crypto/cipher"
	"crypto/sha1"
	"encoding/base64"
	"encoding/binary"
	"encoding/json"
	"encoding/xml"
	"fmt"
	"net/http"
	"net/http/httptest"
	"sort"
	"strings"
	"testing"

	"github.com/sipeed/picoclaw/pkg/bus"
	"github.com/sipeed/picoclaw/pkg/config"
)

// generateTestAESKey generates a valid test AES key
func generateTestAESKey() string {
	// AES key needs to be 32 bytes (256 bits) for AES-256
	key := make([]byte, 32)
	for i := range key {
		key[i] = byte(i)
	}
	// Return base64 encoded key without padding
	return base64.StdEncoding.EncodeToString(key)[:43]
}

// encryptTestMessage encrypts a message for testing (AIBOT JSON format)
func encryptTestMessage(message, aesKey string) (string, error) {
	// Decode AES key
	key, err := base64.StdEncoding.DecodeString(aesKey + "=")
	if err != nil {
		return "", err
	}

	// Prepare message: random(16) + msg_len(4) + msg + receiveid
	random := make([]byte, 0, 16)
	for i := range 16 {
		random = append(random, byte(i))
	}

	msgBytes := []byte(message)
	receiveID := []byte("test_aibot_id")

	msgLen := uint32(len(msgBytes))
	lenBytes := make([]byte, 4)
	binary.BigEndian.PutUint32(lenBytes, msgLen)

	plainText := append(random, lenBytes...)
	plainText = append(plainText, msgBytes...)
	plainText = append(plainText, receiveID...)

	// PKCS7 padding
	blockSize := aes.BlockSize
	padding := blockSize - len(plainText)%blockSize
	padText := bytes.Repeat([]byte{byte(padding)}, padding)
	plainText = append(plainText, padText...)

	// Encrypt
	block, err := aes.NewCipher(key)
	if err != nil {
		return "", err
	}

	mode := cipher.NewCBCEncrypter(block, key[:aes.BlockSize])
	cipherText := make([]byte, len(plainText))
	mode.CryptBlocks(cipherText, plainText)

	return base64.StdEncoding.EncodeToString(cipherText), nil
}

// generateSignature generates a signature for testing
func generateSignature(token, timestamp, nonce, msgEncrypt string) string {
	params := []string{token, timestamp, nonce, msgEncrypt}
	sort.Strings(params)
	str := strings.Join(params, "")
	hash := sha1.Sum([]byte(str))
	return fmt.Sprintf("%x", hash)
}

func TestNewWeComBotChannel(t *testing.T) {
	msgBus := bus.NewMessageBus()

	t.Run("missing token", func(t *testing.T) {
		cfg := config.WeComConfig{
			Token:      "",
			WebhookURL: "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
		}
		_, err := NewWeComBotChannel(cfg, msgBus)
		if err == nil {
			t.Error("expected error for missing token, got nil")
		}
	})

	t.Run("missing webhook_url", func(t *testing.T) {
		cfg := config.WeComConfig{
			Token:      "test_token",
			WebhookURL: "",
		}
		_, err := NewWeComBotChannel(cfg, msgBus)
		if err == nil {
			t.Error("expected error for missing webhook_url, got nil")
		}
	})

	t.Run("valid config", func(t *testing.T) {
		cfg := config.WeComConfig{
			Token:      "test_token",
			WebhookURL: "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
			AllowFrom:  []string{"user1", "user2"},
		}
		ch, err := NewWeComBotChannel(cfg, msgBus)
		if err != nil {
			t.Fatalf("unexpected error: %v", err)
		}
		if ch.Name() != "wecom" {
			t.Errorf("Name() = %q, want %q", ch.Name(), "wecom")
		}
		if ch.IsRunning() {
			t.Error("new channel should not be running")
		}
	})
}

func TestWeComBotChannelIsAllowed(t *testing.T) {
	msgBus := bus.NewMessageBus()

	t.Run("empty allowlist allows all", func(t *testing.T) {
		cfg := config.WeComConfig{
			Token:      "test_token",
			WebhookURL: "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
			AllowFrom:  []string{},
		}
		ch, _ := NewWeComBotChannel(cfg, msgBus)
		if !ch.IsAllowed("any_user") {
			t.Error("empty allowlist should allow all users")
		}
	})

	t.Run("allowlist restricts users", func(t *testing.T) {
		cfg := config.WeComConfig{
			Token:      "test_token",
			WebhookURL: "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
			AllowFrom:  []string{"allowed_user"},
		}
		ch, _ := NewWeComBotChannel(cfg, msgBus)
		if !ch.IsAllowed("allowed_user") {
			t.Error("allowed user should pass allowlist check")
		}
		if ch.IsAllowed("blocked_user") {
			t.Error("non-allowed user should be blocked")
		}
	})
}

func TestWeComBotVerifySignature(t *testing.T) {
	msgBus := bus.NewMessageBus()
	cfg := config.WeComConfig{
		Token:      "test_token",
		WebhookURL: "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
	}
	ch, _ := NewWeComBotChannel(cfg, msgBus)

	t.Run("valid signature", func(t *testing.T) {
		timestamp := "1234567890"
		nonce := "test_nonce"
		msgEncrypt := "test_message"
		expectedSig := generateSignature("test_token", timestamp, nonce, msgEncrypt)

		if !verifySignature(ch.config.Token, expectedSig, timestamp, nonce, msgEncrypt) {
			t.Error("valid signature should pass verification")
		}
	})

	t.Run("invalid signature", func(t *testing.T) {
		timestamp := "1234567890"
		nonce := "test_nonce"
		msgEncrypt := "test_message"

		if verifySignature(ch.config.Token, "invalid_sig", timestamp, nonce, msgEncrypt) {
			t.Error("invalid signature should fail verification")
		}
	})

	t.Run("empty token rejects verification (fail-closed)", func(t *testing.T) {
		cfgEmpty := config.WeComConfig{
			Token:      "",
			WebhookURL: "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
		}
		chEmpty := &WeComBotChannel{
			config: cfgEmpty,
		}

		if verifySignature(chEmpty.config.Token, "any_sig", "any_ts", "any_nonce", "any_msg") {
			t.Error("empty token should reject verification (fail-closed)")
		}
	})
}

func TestWeComBotDecryptMessage(t *testing.T) {
	msgBus := bus.NewMessageBus()

	t.Run("decrypt without AES key", func(t *testing.T) {
		cfg := config.WeComConfig{
			Token:          "test_token",
			WebhookURL:     "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
			EncodingAESKey: "",
		}
		ch, _ := NewWeComBotChannel(cfg, msgBus)

		// Without AES key, message should be base64 decoded only
		plainText := "hello world"
		encoded := base64.StdEncoding.EncodeToString([]byte(plainText))

		result, err := decryptMessage(encoded, ch.config.EncodingAESKey)
		if err != nil {
			t.Fatalf("unexpected error: %v", err)
		}
		if result != plainText {
			t.Errorf("decryptMessage() = %q, want %q", result, plainText)
		}
	})

	t.Run("decrypt with AES key", func(t *testing.T) {
		aesKey := generateTestAESKey()
		cfg := config.WeComConfig{
			Token:          "test_token",
			WebhookURL:     "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
			EncodingAESKey: aesKey,
		}
		ch, _ := NewWeComBotChannel(cfg, msgBus)

		originalMsg := "<xml><Content>Hello</Content></xml>"
		encrypted, err := encryptTestMessage(originalMsg, aesKey)
		if err != nil {
			t.Fatalf("failed to encrypt test message: %v", err)
		}

		result, err := decryptMessage(encrypted, ch.config.EncodingAESKey)
		if err != nil {
			t.Fatalf("unexpected error: %v", err)
		}
		if result != originalMsg {
			t.Errorf("WeComDecryptMessage() = %q, want %q", result, originalMsg)
		}
	})

	t.Run("invalid base64", func(t *testing.T) {
		cfg := config.WeComConfig{
			Token:          "test_token",
			WebhookURL:     "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
			EncodingAESKey: "",
		}
		ch, _ := NewWeComBotChannel(cfg, msgBus)

		_, err := decryptMessage("invalid_base64!!!", ch.config.EncodingAESKey)
		if err == nil {
			t.Error("expected error for invalid base64, got nil")
		}
	})

	t.Run("invalid AES key", func(t *testing.T) {
		cfg := config.WeComConfig{
			Token:          "test_token",
			WebhookURL:     "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
			EncodingAESKey: "invalid_key",
		}
		ch, _ := NewWeComBotChannel(cfg, msgBus)

		_, err := decryptMessage(base64.StdEncoding.EncodeToString([]byte("test")), ch.config.EncodingAESKey)
		if err == nil {
			t.Error("expected error for invalid AES key, got nil")
		}
	})
}

func TestWeComBotPKCS7Unpad(t *testing.T) {
	tests := []struct {
		name     string
		input    []byte
		expected []byte
	}{
		{
			name:     "empty input",
			input:    []byte{},
			expected: []byte{},
		},
		{
			name:     "valid padding 3 bytes",
			input:    append([]byte("hello"), bytes.Repeat([]byte{3}, 3)...),
			expected: []byte("hello"),
		},
		{
			name:     "valid padding 16 bytes (full block)",
			input:    append([]byte("123456789012345"), bytes.Repeat([]byte{16}, 16)...),
			expected: []byte("123456789012345"),
		},
		{
			name:     "invalid padding larger than data",
			input:    []byte{20},
			expected: nil, // should return error
		},
		{
			name:     "invalid padding zero",
			input:    append([]byte("test"), byte(0)),
			expected: nil, // should return error
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			result, err := pkcs7Unpad(tt.input)
			if tt.expected == nil {
				// This case should return an error
				if err == nil {
					t.Errorf("pkcs7Unpad() expected error for invalid padding, got result: %v", result)
				}
				return
			}
			if err != nil {
				t.Errorf("pkcs7Unpad() unexpected error: %v", err)
				return
			}
			if !bytes.Equal(result, tt.expected) {
				t.Errorf("pkcs7Unpad() = %v, want %v", result, tt.expected)
			}
		})
	}
}

func TestWeComBotHandleVerification(t *testing.T) {
	msgBus := bus.NewMessageBus()
	aesKey := generateTestAESKey()
	cfg := config.WeComConfig{
		Token:          "test_token",
		EncodingAESKey: aesKey,
		WebhookURL:     "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
	}
	ch, _ := NewWeComBotChannel(cfg, msgBus)

	t.Run("valid verification request", func(t *testing.T) {
		echostr := "test_echostr_123"
		encryptedEchostr, _ := encryptTestMessage(echostr, aesKey)
		timestamp := "1234567890"
		nonce := "test_nonce"
		signature := generateSignature("test_token", timestamp, nonce, encryptedEchostr)

		req := httptest.NewRequest(
			http.MethodGet,
			"/webhook/wecom?msg_signature="+signature+"&timestamp="+timestamp+"&nonce="+nonce+"&echostr="+encryptedEchostr,
			nil,
		)
		w := httptest.NewRecorder()

		ch.handleVerification(context.Background(), w, req)

		if w.Code != http.StatusOK {
			t.Errorf("status code = %d, want %d", w.Code, http.StatusOK)
		}
		if w.Body.String() != echostr {
			t.Errorf("response body = %q, want %q", w.Body.String(), echostr)
		}
	})

	t.Run("missing parameters", func(t *testing.T) {
		req := httptest.NewRequest(http.MethodGet, "/webhook/wecom?msg_signature=sig&timestamp=ts", nil)
		w := httptest.NewRecorder()

		ch.handleVerification(context.Background(), w, req)

		if w.Code != http.StatusBadRequest {
			t.Errorf("status code = %d, want %d", w.Code, http.StatusBadRequest)
		}
	})

	t.Run("invalid signature", func(t *testing.T) {
		echostr := "test_echostr"
		encryptedEchostr, _ := encryptTestMessage(echostr, aesKey)
		timestamp := "1234567890"
		nonce := "test_nonce"

		req := httptest.NewRequest(
			http.MethodGet,
			"/webhook/wecom?msg_signature=invalid_sig&timestamp="+timestamp+"&nonce="+nonce+"&echostr="+encryptedEchostr,
			nil,
		)
		w := httptest.NewRecorder()

		ch.handleVerification(context.Background(), w, req)

		if w.Code != http.StatusForbidden {
			t.Errorf("status code = %d, want %d", w.Code, http.StatusForbidden)
		}
	})
}

func TestWeComBotHandleMessageCallback(t *testing.T) {
	msgBus := bus.NewMessageBus()
	aesKey := generateTestAESKey()
	cfg := config.WeComConfig{
		Token:          "test_token",
		EncodingAESKey: aesKey,
		WebhookURL:     "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
	}
	ch, _ := NewWeComBotChannel(cfg, msgBus)

	runBotMessageCallback := func(t *testing.T, jsonMsg string) *httptest.ResponseRecorder {
		t.Helper()
		encrypted, _ := encryptTestMessage(jsonMsg, aesKey)
		encryptedWrapper := struct {
			XMLName xml.Name `xml:"xml"`
			Encrypt string   `xml:"Encrypt"`
		}{
			Encrypt: encrypted,
		}
		wrapperData, _ := xml.Marshal(encryptedWrapper)
		timestamp := "1234567890"
		nonce := "test_nonce"
		signature := generateSignature("test_token", timestamp, nonce, encrypted)
		req := httptest.NewRequest(
			http.MethodPost,
			"/webhook/wecom?msg_signature="+signature+"&timestamp="+timestamp+"&nonce="+nonce,
			bytes.NewReader(wrapperData),
		)
		w := httptest.NewRecorder()
		ch.handleMessageCallback(context.Background(), w, req)
		return w
	}

	t.Run("valid direct message callback", func(t *testing.T) {
		w := runBotMessageCallback(t, `{
			"msgid": "test_msg_id_123",
			"aibotid": "test_aibot_id",
			"chattype": "single",
			"from": {"userid": "user123"},
			"response_url": "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
			"msgtype": "text",
			"text": {"content": "Hello World"}
		}`)
		if w.Code != http.StatusOK {
			t.Errorf("status code = %d, want %d", w.Code, http.StatusOK)
		}
		if w.Body.String() != "success" {
			t.Errorf("response body = %q, want %q", w.Body.String(), "success")
		}
	})

	t.Run("valid group message callback", func(t *testing.T) {
		w := runBotMessageCallback(t, `{
			"msgid": "test_msg_id_456",
			"aibotid": "test_aibot_id",
			"chatid": "group_chat_id_123",
			"chattype": "group",
			"from": {"userid": "user456"},
			"response_url": "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
			"msgtype": "text",
			"text": {"content": "Hello Group"}
		}`)
		if w.Code != http.StatusOK {
			t.Errorf("status code = %d, want %d", w.Code, http.StatusOK)
		}
		if w.Body.String() != "success" {
			t.Errorf("response body = %q, want %q", w.Body.String(), "success")
		}
	})

	t.Run("missing parameters", func(t *testing.T) {
		req := httptest.NewRequest(http.MethodPost, "/webhook/wecom?msg_signature=sig", nil)
		w := httptest.NewRecorder()

		ch.handleMessageCallback(context.Background(), w, req)

		if w.Code != http.StatusBadRequest {
			t.Errorf("status code = %d, want %d", w.Code, http.StatusBadRequest)
		}
	})

	t.Run("invalid XML", func(t *testing.T) {
		timestamp := "1234567890"
		nonce := "test_nonce"
		signature := generateSignature("test_token", timestamp, nonce, "")

		req := httptest.NewRequest(
			http.MethodPost,
			"/webhook/wecom?msg_signature="+signature+"&timestamp="+timestamp+"&nonce="+nonce,
			strings.NewReader("invalid xml"),
		)
		w := httptest.NewRecorder()

		ch.handleMessageCallback(context.Background(), w, req)

		if w.Code != http.StatusBadRequest {
			t.Errorf("status code = %d, want %d", w.Code, http.StatusBadRequest)
		}
	})

	t.Run("invalid signature", func(t *testing.T) {
		encryptedWrapper := struct {
			XMLName xml.Name `xml:"xml"`
			Encrypt string   `xml:"Encrypt"`
		}{
			Encrypt: "encrypted_data",
		}
		wrapperData, _ := xml.Marshal(encryptedWrapper)

		timestamp := "1234567890"
		nonce := "test_nonce"

		req := httptest.NewRequest(
			http.MethodPost,
			"/webhook/wecom?msg_signature=invalid_sig&timestamp="+timestamp+"&nonce="+nonce,
			bytes.NewReader(wrapperData),
		)
		w := httptest.NewRecorder()

		ch.handleMessageCallback(context.Background(), w, req)

		if w.Code != http.StatusForbidden {
			t.Errorf("status code = %d, want %d", w.Code, http.StatusForbidden)
		}
	})
}

func TestWeComBotProcessMessage(t *testing.T) {
	msgBus := bus.NewMessageBus()
	cfg := config.WeComConfig{
		Token:      "test_token",
		WebhookURL: "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
	}
	ch, _ := NewWeComBotChannel(cfg, msgBus)

	t.Run("process direct text message", func(t *testing.T) {
		msg := WeComBotMessage{
			MsgID:       "test_msg_id_123",
			AIBotID:     "test_aibot_id",
			ChatType:    "single",
			ResponseURL: "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
			MsgType:     "text",
		}
		msg.From.UserID = "user123"
		msg.Text.Content = "Hello World"

		// Should not panic
		ch.processMessage(context.Background(), msg)
	})

	t.Run("process group text message", func(t *testing.T) {
		msg := WeComBotMessage{
			MsgID:       "test_msg_id_456",
			AIBotID:     "test_aibot_id",
			ChatID:      "group_chat_id_123",
			ChatType:    "group",
			ResponseURL: "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
			MsgType:     "text",
		}
		msg.From.UserID = "user456"
		msg.Text.Content = "Hello Group"

		// Should not panic
		ch.processMessage(context.Background(), msg)
	})

	t.Run("process voice message", func(t *testing.T) {
		msg := WeComBotMessage{
			MsgID:       "test_msg_id_789",
			AIBotID:     "test_aibot_id",
			ChatType:    "single",
			ResponseURL: "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
			MsgType:     "voice",
		}
		msg.From.UserID = "user123"
		msg.Voice.Content = "Voice message text"

		// Should not panic
		ch.processMessage(context.Background(), msg)
	})

	t.Run("skip unsupported message type", func(t *testing.T) {
		msg := WeComBotMessage{
			MsgID:       "test_msg_id_000",
			AIBotID:     "test_aibot_id",
			ChatType:    "single",
			ResponseURL: "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
			MsgType:     "video",
		}
		msg.From.UserID = "user123"

		// Should not panic
		ch.processMessage(context.Background(), msg)
	})
}

func TestWeComBotHandleWebhook(t *testing.T) {
	msgBus := bus.NewMessageBus()
	cfg := config.WeComConfig{
		Token:      "test_token",
		WebhookURL: "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
	}
	ch, _ := NewWeComBotChannel(cfg, msgBus)

	t.Run("GET request calls verification", func(t *testing.T) {
		echostr := "test_echostr"
		encoded := base64.StdEncoding.EncodeToString([]byte(echostr))
		timestamp := "1234567890"
		nonce := "test_nonce"
		signature := generateSignature("test_token", timestamp, nonce, encoded)

		req := httptest.NewRequest(
			http.MethodGet,
			"/webhook/wecom?msg_signature="+signature+"&timestamp="+timestamp+"&nonce="+nonce+"&echostr="+encoded,
			nil,
		)
		w := httptest.NewRecorder()

		ch.handleWebhook(w, req)

		if w.Code != http.StatusOK {
			t.Errorf("status code = %d, want %d", w.Code, http.StatusOK)
		}
	})

	t.Run("POST request calls message callback", func(t *testing.T) {
		encryptedWrapper := struct {
			XMLName xml.Name `xml:"xml"`
			Encrypt string   `xml:"Encrypt"`
		}{
			Encrypt: base64.StdEncoding.EncodeToString([]byte("test")),
		}
		wrapperData, _ := xml.Marshal(encryptedWrapper)

		timestamp := "1234567890"
		nonce := "test_nonce"
		signature := generateSignature("test_token", timestamp, nonce, encryptedWrapper.Encrypt)

		req := httptest.NewRequest(
			http.MethodPost,
			"/webhook/wecom?msg_signature="+signature+"&timestamp="+timestamp+"&nonce="+nonce,
			bytes.NewReader(wrapperData),
		)
		w := httptest.NewRecorder()

		ch.handleWebhook(w, req)

		// Should not be method not allowed
		if w.Code == http.StatusMethodNotAllowed {
			t.Error("POST request should not return Method Not Allowed")
		}
	})

	t.Run("unsupported method", func(t *testing.T) {
		req := httptest.NewRequest(http.MethodPut, "/webhook/wecom", nil)
		w := httptest.NewRecorder()

		ch.handleWebhook(w, req)

		if w.Code != http.StatusMethodNotAllowed {
			t.Errorf("status code = %d, want %d", w.Code, http.StatusMethodNotAllowed)
		}
	})
}

func TestWeComBotHandleHealth(t *testing.T) {
	msgBus := bus.NewMessageBus()
	cfg := config.WeComConfig{
		Token:      "test_token",
		WebhookURL: "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
	}
	ch, _ := NewWeComBotChannel(cfg, msgBus)

	req := httptest.NewRequest(http.MethodGet, "/health/wecom", nil)
	w := httptest.NewRecorder()

	ch.handleHealth(w, req)

	if w.Code != http.StatusOK {
		t.Errorf("status code = %d, want %d", w.Code, http.StatusOK)
	}

	contentType := w.Header().Get("Content-Type")
	if contentType != "application/json" {
		t.Errorf("Content-Type = %q, want %q", contentType, "application/json")
	}

	body := w.Body.String()
	if !strings.Contains(body, "status") || !strings.Contains(body, "running") {
		t.Errorf("response body should contain status and running fields, got: %s", body)
	}
}

func TestWeComBotReplyMessage(t *testing.T) {
	msg := WeComBotReplyMessage{
		MsgType: "text",
	}
	msg.Text.Content = "Hello World"

	if msg.MsgType != "text" {
		t.Errorf("MsgType = %q, want %q", msg.MsgType, "text")
	}
	if msg.Text.Content != "Hello World" {
		t.Errorf("Text.Content = %q, want %q", msg.Text.Content, "Hello World")
	}
}

func TestWeComBotMessageStructure(t *testing.T) {
	jsonData := `{
		"msgid": "test_msg_id_123",
		"aibotid": "test_aibot_id",
		"chatid": "group_chat_id_123",
		"chattype": "group",
		"from": {"userid": "user123"},
		"response_url": "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=test",
		"msgtype": "text",
		"text": {"content": "Hello World"}
	}`

	var msg WeComBotMessage
	err := json.Unmarshal([]byte(jsonData), &msg)
	if err != nil {
		t.Fatalf("failed to unmarshal JSON: %v", err)
	}

	if msg.MsgID != "test_msg_id_123" {
		t.Errorf("MsgID = %q, want %q", msg.MsgID, "test_msg_id_123")
	}
	if msg.AIBotID != "test_aibot_id" {
		t.Errorf("AIBotID = %q, want %q", msg.AIBotID, "test_aibot_id")
	}
	if msg.ChatID != "group_chat_id_123" {
		t.Errorf("ChatID = %q, want %q", msg.ChatID, "group_chat_id_123")
	}
	if msg.ChatType != "group" {
		t.Errorf("ChatType = %q, want %q", msg.ChatType, "group")
	}
	if msg.From.UserID != "user123" {
		t.Errorf("From.UserID = %q, want %q", msg.From.UserID, "user123")
	}
	if msg.MsgType != "text" {
		t.Errorf("MsgType = %q, want %q", msg.MsgType, "text")
	}
	if msg.Text.Content != "Hello World" {
		t.Errorf("Text.Content = %q, want %q", msg.Text.Content, "Hello World")
	}
}