openlark-communication 0.16.0

//! openlark-communication 链式调用入口（meta 风格，偏"模块入口"）
//!
//! 说明：
//! - 本文件放在 `common/` 下，避免被 strict API 校验脚本计入"额外实现文件"。
//! - communication 模块 API 规模较大（IM/Contact/Moments 等）。为避免为大量 API 手写方法，
//!   这里先提供"bizTag 级入口 + Config 透传"。
//! - 具体 API 调用仍使用各 `*RequestBuilder/*Request` 的 `new(config)` / `execute(...)`。

use std::sync::Arc;

use openlark_core::config::Config;
#[cfg(any(feature = "im", feature = "contact"))]
use openlark_core::error::business_error;
#[cfg(feature = "im")]
use openlark_core::validate_required;
#[cfg(any(feature = "im", feature = "contact"))]
use openlark_core::{SDKResult, error::validation_error};

#[cfg(feature = "contact")]
use crate::contact::contact::v3::user::{
    create::UserResponse,
    get::GetUserRequest,
    models::{DepartmentIdType, UserIdType as ContactUserIdType},
};
#[cfg(feature = "contact")]
use crate::contact::contact_search::old::default::v1::user::SearchUserRequest;
#[cfg(feature = "im")]
use crate::im::v1::message::{
    create::{CreateMessageBody, CreateMessageRequest},
    models::ReceiveIdType,
    reply::{ReplyMessageBody, ReplyMessageRequest},
};
#[cfg(feature = "im")]
use crate::im::v1::thread::forward::{ForwardThreadBody, ForwardThreadRequest};
#[cfg(feature = "im")]
use crate::im::v1::{
    chat::{get::GetChatRequest, search::SearchChatsRequest},
    message::models::UserIdType as ImUserIdType,
};
#[cfg(feature = "im")]
use crate::im::v1::{
    file::{
        create::{CreateFileBody, CreateFileRequest},
        models::CreateFileResponse,
    },
    image::{
        create::CreateImageRequest,
        models::{CreateImageResponse, ImageType},
    },
};

/// 消息接收者 helper。
///
/// 统一接收者 ID 与 `receive_id_type`，避免文本/卡片等消息 helper
/// 每次都分别传两个参数。
#[cfg(feature = "im")]
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct MessageRecipient {
    /// 接收者 ID。
    pub receive_id: String,
    /// 接收者 ID 类型。
    pub receive_id_type: ReceiveIdType,
}

#[cfg(feature = "im")]
impl MessageRecipient {
    /// 使用指定接收者 ID 和类型创建 helper。
    pub fn new(receive_id: impl Into<String>, receive_id_type: ReceiveIdType) -> Self {
        Self {
            receive_id: receive_id.into(),
            receive_id_type,
        }
    }

    /// 创建使用 `open_id` 的接收者。
    pub fn open_id(receive_id: impl Into<String>) -> Self {
        Self::new(receive_id, ReceiveIdType::OpenId)
    }

    /// 创建使用 `user_id` 的接收者。
    pub fn user_id(receive_id: impl Into<String>) -> Self {
        Self::new(receive_id, ReceiveIdType::UserId)
    }

    /// 创建使用邮箱的接收者。
    pub fn email(receive_id: impl Into<String>) -> Self {
        Self::new(receive_id, ReceiveIdType::Email)
    }

    /// 创建使用群 ID 的接收者。
    pub fn chat_id(receive_id: impl Into<String>) -> Self {
        Self::new(receive_id, ReceiveIdType::ChatId)
    }
}

/// 富文本（post）消息 helper。
///
/// 当前只覆盖最常见的“标题 + 单段文本”结构，不试图抽象完整消息 DSL。
#[cfg(feature = "im")]
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct PostMessage {
    /// 语言区域。
    pub locale: String,
    /// 标题。
    pub title: String,
    /// 文本内容。
    pub text: String,
}

#[cfg(feature = "im")]
impl PostMessage {
    /// 创建中文富文本消息 helper。
    pub fn zh_cn(title: impl Into<String>, text: impl Into<String>) -> Self {
        Self {
            locale: "zh_cn".to_string(),
            title: title.into(),
            text: text.into(),
        }
    }

    fn into_content(self) -> SDKResult<String> {
        let title = self.title.trim().to_string();
        let text = self.text.trim().to_string();
        if title.is_empty() {
            return Err(validation_error("title", "title 不能为空"));
        }
        if text.is_empty() {
            return Err(validation_error("text", "text 不能为空"));
        }

        Ok(serde_json::json!({
            "post": {
                self.locale: {
                    "title": title,
                    "content": [[{"tag": "text", "text": text}]]
                }
            }
        })
        .to_string())
    }
}

/// 回复上下文 helper。
///
/// 统一回复目标消息与是否在话题内回复的上下文参数。
#[cfg(feature = "im")]
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct ReplyTarget {
    /// 目标消息 ID。
    pub message_id: String,
    /// 是否以话题形式回复。
    pub reply_in_thread: bool,
}

#[cfg(feature = "im")]
impl ReplyTarget {
    /// 创建普通回复目标。
    pub fn direct(message_id: impl Into<String>) -> Self {
        Self {
            message_id: message_id.into(),
            reply_in_thread: false,
        }
    }

    /// 创建话题内回复目标。
    pub fn in_thread(message_id: impl Into<String>) -> Self {
        Self {
            message_id: message_id.into(),
            reply_in_thread: true,
        }
    }
}

/// 图片上传 helper。
///
/// 默认按消息图片上传，调用方只需传入二进制内容；
/// 如有需要，可额外补充文件名或切换为头像上传。
#[cfg(feature = "im")]
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct MediaImageUpload {
    /// 图片用途类型。
    pub image_type: ImageType,
    /// 文件名。
    pub file_name: Option<String>,
    /// 图片二进制内容。
    pub bytes: Vec<u8>,
}

#[cfg(feature = "im")]
impl MediaImageUpload {
    /// 使用图片字节创建上传 helper。
    pub fn new(bytes: Vec<u8>) -> Self {
        Self {
            image_type: ImageType::Message,
            file_name: None,
            bytes,
        }
    }

    /// 将图片类型切换为头像。
    pub fn avatar(mut self) -> Self {
        self.image_type = ImageType::Avatar;
        self
    }

    /// 设置上传文件名。
    pub fn file_name(mut self, file_name: impl Into<String>) -> Self {
        self.file_name = Some(file_name.into());
        self
    }
}

/// 文件上传 helper。
///
/// 默认根据文件名后缀推断 `file_type`，必要时允许调用方显式覆盖。
#[cfg(feature = "im")]
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct MediaFileUpload {
    /// 文件名。
    pub file_name: String,
    /// 文件类型。
    pub file_type: String,
    /// 时长，通常用于音视频。
    pub duration: Option<i32>,
    /// 文件二进制内容。
    pub bytes: Vec<u8>,
}

#[cfg(feature = "im")]
impl MediaFileUpload {
    /// 使用文件名和内容创建上传 helper。
    pub fn new(file_name: impl Into<String>, bytes: Vec<u8>) -> Self {
        let file_name = file_name.into();
        let file_type = infer_file_type(&file_name);
        Self {
            file_name,
            file_type,
            duration: None,
            bytes,
        }
    }

    /// 显式覆盖文件类型。
    pub fn file_type(mut self, file_type: impl Into<String>) -> Self {
        self.file_type = file_type.into();
        self
    }

    /// 设置媒体时长。
    pub fn duration(mut self, duration: i32) -> Self {
        self.duration = Some(duration);
        self
    }
}

/// 用户查找 helper。
///
/// 统一承载搜索用户接口里最常用的字段，避免调用方直接处理原始 JSON。
#[cfg(feature = "contact")]
#[derive(Debug, Clone, serde::Deserialize, PartialEq, Eq)]
pub struct UserLookupItem {
    /// 用户名称。
    pub name: String,
    /// 用户 open_id。
    pub open_id: String,
    /// 用户 user_id。
    #[serde(default)]
    pub user_id: Option<String>,
    /// 用户所在部门 ID 列表。
    #[serde(default)]
    pub department_ids: Vec<String>,
}

/// 群查找 helper。
///
/// 统一承载群搜索结果里最常用的字段。
#[cfg(feature = "im")]
#[derive(Debug, Clone, serde::Deserialize, PartialEq, Eq)]
pub struct ChatLookupItem {
    /// 群 ID。
    pub chat_id: String,
    /// 群名称。
    pub name: String,
    /// 群描述。
    #[serde(default)]
    pub description: Option<String>,
    /// 群主 ID。
    #[serde(default)]
    pub owner_id: Option<String>,
    /// 群主 ID 类型。
    #[serde(default)]
    pub owner_id_type: Option<String>,
    /// 是否外部群。
    #[serde(default)]
    pub external: bool,
    /// 租户 key。
    #[serde(default)]
    pub tenant_key: Option<String>,
    /// 群状态。
    #[serde(default)]
    pub chat_status: Option<String>,
}

#[cfg(feature = "contact")]
#[derive(Debug, Clone, serde::Deserialize)]
struct UserLookupResponse {
    #[serde(default)]
    has_more: bool,
    #[serde(default)]
    page_token: Option<String>,
    #[serde(default)]
    users: Vec<UserLookupItem>,
}

#[cfg(feature = "im")]
#[derive(Debug, Clone, serde::Deserialize)]
struct ChatLookupResponse {
    #[serde(default)]
    has_more: bool,
    #[serde(default)]
    page_token: Option<String>,
    #[serde(default)]
    items: Vec<ChatLookupItem>,
}

/// Communication 链式入口：`communication.im` / `communication.contact` / `communication.moments`
#[derive(Debug, Clone)]
pub struct CommunicationClient {
    config: Arc<Config>,

    #[cfg(feature = "im")]
    /// IM helper 入口。
    pub im: ImClient,

    #[cfg(feature = "contact")]
    /// 通讯录 helper 入口。
    pub contact: ContactClient,

    #[cfg(feature = "moments")]
    /// Moments helper 入口。
    pub moments: MomentsClient,
}

impl CommunicationClient {
    /// 使用配置创建 communication 链式入口。
    pub fn new(config: Config) -> Self {
        let config = Arc::new(config);
        Self {
            config: config.clone(),
            #[cfg(feature = "im")]
            im: ImClient::new(config.clone()),
            #[cfg(feature = "contact")]
            contact: ContactClient::new(config.clone()),
            #[cfg(feature = "moments")]
            moments: MomentsClient::new(config),
        }
    }

    /// 返回底层共享配置。
    pub fn config(&self) -> &Config {
        &self.config
    }
}

#[cfg(feature = "im")]
/// IM 链式 helper 入口。
#[derive(Debug, Clone)]
pub struct ImClient {
    config: Arc<Config>,
}

#[cfg(feature = "im")]
impl ImClient {
    fn new(config: Arc<Config>) -> Self {
        Self { config }
    }

    /// 返回底层共享配置。
    pub fn config(&self) -> &Config {
        &self.config
    }

    /// 发送文本消息 helper。
    pub async fn send_text(
        &self,
        recipient: MessageRecipient,
        text: impl Into<String>,
    ) -> SDKResult<serde_json::Value> {
        let body = Self::build_text_body(recipient, text.into())?;
        Self::create_message_request(self.config.clone(), body.receive_id_type())
            .execute(body.into())
            .await
    }

    /// 发送富文本（post）消息 helper。
    pub async fn send_post(
        &self,
        recipient: MessageRecipient,
        post: PostMessage,
    ) -> SDKResult<serde_json::Value> {
        let body = Self::build_post_body(recipient, post)?;
        Self::create_message_request(self.config.clone(), body.receive_id_type())
            .execute(body.into())
            .await
    }

    /// 回复文本消息 helper。
    pub async fn reply_text(
        &self,
        target: ReplyTarget,
        text: impl Into<String>,
    ) -> SDKResult<serde_json::Value> {
        let body = Self::build_reply_text_body(target, text.into())?;
        Self::create_reply_request(self.config.clone(), body.message_id())
            .execute(body.into())
            .await
    }

    /// 回复富文本（post）消息 helper。
    pub async fn reply_post(
        &self,
        target: ReplyTarget,
        post: PostMessage,
    ) -> SDKResult<serde_json::Value> {
        let body = Self::build_reply_post_body(target, post)?;
        Self::create_reply_request(self.config.clone(), body.message_id())
            .execute(body.into())
            .await
    }

    /// 转发话题 helper。
    pub async fn forward_thread(
        &self,
        thread_id: impl Into<String>,
        recipient: MessageRecipient,
    ) -> SDKResult<serde_json::Value> {
        let request = ForwardThreadRequest::new(self.config.as_ref().clone())
            .thread_id(thread_id)
            .receive_id_type(recipient.receive_id_type);
        request
            .execute(ForwardThreadBody::new(recipient.receive_id))
            .await
    }

    /// 上传消息图片 helper。
    pub async fn upload_image(&self, upload: MediaImageUpload) -> SDKResult<CreateImageResponse> {
        if upload.bytes.is_empty() {
            return Err(validation_error("image", "image 不能为空"));
        }
        let mut request =
            CreateImageRequest::new(self.config.as_ref().clone()).image_type(upload.image_type);
        if let Some(file_name) = upload.file_name {
            request = request.file_name(file_name);
        }
        request.execute(upload.bytes).await
    }

    /// 上传消息文件 helper。
    pub async fn upload_file(&self, upload: MediaFileUpload) -> SDKResult<CreateFileResponse> {
        let mut body = CreateFileBody::new(upload.file_type, upload.file_name);
        if let Some(duration) = upload.duration {
            body = body.duration(duration);
        }
        CreateFileRequest::new(self.config.as_ref().clone())
            .execute(body, upload.bytes)
            .await
    }

    /// 发送图片消息 helper。
    pub async fn send_image(
        &self,
        recipient: MessageRecipient,
        image_key: impl Into<String>,
    ) -> SDKResult<serde_json::Value> {
        let image_key = image_key.into();
        if image_key.trim().is_empty() {
            return Err(validation_error("image_key", "image_key 不能为空"));
        }
        let body = Self::build_media_body(
            recipient,
            "image",
            serde_json::json!({ "image_key": image_key }).to_string(),
        )?;
        Self::create_message_request(self.config.clone(), body.receive_id_type())
            .execute(body.into())
            .await
    }

    /// 发送文件消息 helper。
    pub async fn send_file(
        &self,
        recipient: MessageRecipient,
        file_key: impl Into<String>,
    ) -> SDKResult<serde_json::Value> {
        let file_key = file_key.into();
        if file_key.trim().is_empty() {
            return Err(validation_error("file_key", "file_key 不能为空"));
        }
        let body = Self::build_media_body(
            recipient,
            "file",
            serde_json::json!({ "file_key": file_key }).to_string(),
        )?;
        Self::create_message_request(self.config.clone(), body.receive_id_type())
            .execute(body.into())
            .await
    }

    /// 搜索可见群聊并自动处理分页。
    pub async fn search_chats_all(&self, query: impl AsRef<str>) -> SDKResult<Vec<ChatLookupItem>> {
        let query = query.as_ref().trim().to_string();
        if query.is_empty() {
            return Err(validation_error("query", "query 不能为空"));
        }

        let mut items = Vec::new();
        let mut page_token: Option<String> = None;

        loop {
            let mut request = SearchChatsRequest::new(self.config.as_ref().clone())
                .query(query.clone())
                .user_id_type(ImUserIdType::OpenId)
                .page_size(100);
            if let Some(token) = &page_token {
                request = request.page_token(token.clone());
            }

            let response: ChatLookupResponse = serde_json::from_value(request.execute().await?)
                .map_err(|e| validation_error("chat_lookup_response", e.to_string().as_str()))?;
            items.extend(response.items);

            if !response.has_more {
                break;
            }
            page_token = response.page_token;
        }

        Ok(items)
    }

    /// 按群名称唯一查找单个群聊。
    pub async fn find_chat_by_name(&self, name: &str) -> SDKResult<ChatLookupItem> {
        let items = self.search_chats_all(name).await?;
        find_unique_chat_by_name(&items, name)
    }

    /// 通过 chat_id 获取群详情。
    pub async fn get_chat_info(&self, chat_id: impl Into<String>) -> SDKResult<serde_json::Value> {
        GetChatRequest::new(self.config.as_ref().clone())
            .chat_id(chat_id)
            .user_id_type(ImUserIdType::OpenId)
            .execute()
            .await
    }

    fn create_message_request(
        config: Arc<Config>,
        receive_id_type: ReceiveIdType,
    ) -> CreateMessageRequest {
        CreateMessageRequest::new(config.as_ref().clone()).receive_id_type(receive_id_type)
    }

    fn create_reply_request(config: Arc<Config>, message_id: String) -> ReplyMessageRequest {
        ReplyMessageRequest::new(config.as_ref().clone()).message_id(message_id)
    }

    fn build_text_body(recipient: MessageRecipient, text: String) -> SDKResult<HelperMessageBody> {
        let text = text.trim().to_string();
        if text.is_empty() {
            return Err(validation_error("text", "text 不能为空"));
        }

        Ok(HelperMessageBody::new(
            recipient,
            "text",
            serde_json::json!({ "text": text }).to_string(),
        ))
    }

    fn build_post_body(
        recipient: MessageRecipient,
        post: PostMessage,
    ) -> SDKResult<HelperMessageBody> {
        Ok(HelperMessageBody::new(
            recipient,
            "post",
            post.into_content()?,
        ))
    }

    fn build_media_body(
        recipient: MessageRecipient,
        msg_type: &str,
        content: String,
    ) -> SDKResult<HelperMessageBody> {
        validate_required!(content, "content 不能为空");
        Ok(HelperMessageBody::new(recipient, msg_type, content))
    }

    fn build_reply_text_body(target: ReplyTarget, text: String) -> SDKResult<HelperReplyBody> {
        let text = text.trim().to_string();
        if text.is_empty() {
            return Err(validation_error("text", "text 不能为空"));
        }

        Ok(HelperReplyBody::new(
            target,
            "text",
            serde_json::json!({ "text": text }).to_string(),
        ))
    }

    fn build_reply_post_body(target: ReplyTarget, post: PostMessage) -> SDKResult<HelperReplyBody> {
        Ok(HelperReplyBody::new(target, "post", post.into_content()?))
    }
}

#[cfg(feature = "im")]
#[derive(Debug, Clone)]
struct HelperMessageBody {
    body: CreateMessageBody,
    receive_id_type: ReceiveIdType,
}

#[cfg(feature = "im")]
impl HelperMessageBody {
    fn new(recipient: MessageRecipient, msg_type: &str, content: String) -> Self {
        Self {
            receive_id_type: recipient.receive_id_type,
            body: CreateMessageBody {
                receive_id: recipient.receive_id,
                msg_type: msg_type.to_string(),
                content,
                uuid: None,
            },
        }
    }

    fn receive_id_type(&self) -> ReceiveIdType {
        self.receive_id_type
    }
}

#[cfg(feature = "im")]
impl From<HelperMessageBody> for CreateMessageBody {
    fn from(value: HelperMessageBody) -> Self {
        value.body
    }
}

#[cfg(feature = "im")]
#[derive(Debug, Clone)]
struct HelperReplyBody {
    body: ReplyMessageBody,
    message_id: String,
}

#[cfg(feature = "im")]
impl HelperReplyBody {
    fn new(target: ReplyTarget, msg_type: &str, content: String) -> Self {
        Self {
            message_id: target.message_id,
            body: ReplyMessageBody {
                content,
                msg_type: msg_type.to_string(),
                reply_in_thread: Some(target.reply_in_thread),
                uuid: None,
            },
        }
    }

    fn message_id(&self) -> String {
        self.message_id.clone()
    }
}

#[cfg(feature = "im")]
impl From<HelperReplyBody> for ReplyMessageBody {
    fn from(value: HelperReplyBody) -> Self {
        value.body
    }
}

#[cfg(feature = "im")]
fn infer_file_type(file_name: &str) -> String {
    std::path::Path::new(file_name)
        .extension()
        .and_then(|ext| ext.to_str())
        .map(|ext| ext.to_ascii_lowercase())
        .filter(|ext| !ext.is_empty())
        .unwrap_or_else(|| "stream".to_string())
}

#[cfg(feature = "contact")]
fn find_unique_user_by_name(users: &[UserLookupItem], name: &str) -> SDKResult<UserLookupItem> {
    let name = name.trim();
    if name.is_empty() {
        return Err(validation_error("name", "name 不能为空"));
    }

    let mut matches = users.iter().filter(|user| user.name == name).cloned();

    let first = matches
        .next()
        .ok_or_else(|| business_error(format!("未找到用户: {name}")))?;
    if matches.next().is_some() {
        return Err(business_error(format!(
            "找到多个同名用户，请缩小范围: {name}"
        )));
    }
    Ok(first)
}

#[cfg(feature = "im")]
fn find_unique_chat_by_name(chats: &[ChatLookupItem], name: &str) -> SDKResult<ChatLookupItem> {
    let name = name.trim();
    if name.is_empty() {
        return Err(validation_error("name", "name 不能为空"));
    }

    let mut matches = chats.iter().filter(|chat| chat.name == name).cloned();

    let first = matches
        .next()
        .ok_or_else(|| business_error(format!("未找到群聊: {name}")))?;
    if matches.next().is_some() {
        return Err(business_error(format!(
            "找到多个同名群聊，请缩小范围: {name}"
        )));
    }
    Ok(first)
}

#[cfg(feature = "contact")]
/// 通讯录链式 helper 入口。
#[derive(Debug, Clone)]
pub struct ContactClient {
    config: Arc<Config>,
}

#[cfg(feature = "contact")]
impl ContactClient {
    fn new(config: Arc<Config>) -> Self {
        Self { config }
    }

    /// 返回底层共享配置。
    pub fn config(&self) -> &Config {
        &self.config
    }

    /// 搜索用户并自动处理分页。
    pub async fn search_users_all(&self, query: impl AsRef<str>) -> SDKResult<Vec<UserLookupItem>> {
        let query = query.as_ref().trim().to_string();
        if query.is_empty() {
            return Err(validation_error("query", "query 不能为空"));
        }

        let mut users = Vec::new();
        let mut page_token: Option<String> = None;

        loop {
            let mut request = SearchUserRequest::new(self.config.as_ref().clone())
                .query(query.clone())
                .page_size(100);
            if let Some(token) = &page_token {
                request = request.page_token(token.clone());
            }

            let response: UserLookupResponse = serde_json::from_value(request.execute().await?)
                .map_err(|e| validation_error("user_lookup_response", e.to_string().as_str()))?;
            users.extend(response.users);

            if !response.has_more {
                break;
            }
            page_token = response.page_token;
        }

        Ok(users)
    }

    /// 按用户名唯一查找单个用户。
    pub async fn find_user_by_name(&self, name: &str) -> SDKResult<UserLookupItem> {
        let users = self.search_users_all(name).await?;
        find_unique_user_by_name(&users, name)
    }

    /// 通过 open_id 获取用户详情。
    pub async fn get_user_by_open_id(&self, open_id: impl Into<String>) -> SDKResult<UserResponse> {
        GetUserRequest::new(self.config.as_ref().clone())
            .user_id(open_id)
            .user_id_type(ContactUserIdType::OpenId)
            .department_id_type(DepartmentIdType::OpenDepartmentId)
            .execute()
            .await
    }
}

#[cfg(feature = "moments")]
/// Moments 链式 helper 入口。
#[derive(Debug, Clone)]
pub struct MomentsClient {
    config: Arc<Config>,
}

#[cfg(feature = "moments")]
impl MomentsClient {
    fn new(config: Arc<Config>) -> Self {
        Self { config }
    }

    /// 返回底层共享配置。
    pub fn config(&self) -> &Config {
        &self.config
    }
}

#[cfg(test)]
#[allow(unused_imports)]
mod tests {
    use super::*;

    fn create_test_config() -> Config {
        Config::builder()
            .app_id("test_app")
            .app_secret("test_secret")
            .build()
    }

    #[test]
    fn test_communication_client_creation() {
        let config = create_test_config();
        let client = CommunicationClient::new(config);
        assert_eq!(client.config().app_id(), "test_app");
    }

    #[test]
    fn test_communication_client_debug() {
        let config = create_test_config();
        let client = CommunicationClient::new(config);
        let debug_str = format!("{client:?}");
        assert!(debug_str.contains("CommunicationClient"));
    }

    #[test]
    fn test_communication_client_clone() {
        let config = create_test_config();
        let client = CommunicationClient::new(config);
        let cloned = client.clone();
        assert_eq!(cloned.config().app_id(), "test_app");
    }

    #[cfg(feature = "im")]
    #[test]
    fn test_im_client_config() {
        let config = create_test_config();
        let client = CommunicationClient::new(config);
        assert_eq!(client.im.config().app_id(), "test_app");
    }

    #[cfg(feature = "im")]
    #[test]
    fn test_message_recipient_constructors() {
        assert_eq!(
            MessageRecipient::open_id("ou_xxx"),
            MessageRecipient::new("ou_xxx", ReceiveIdType::OpenId)
        );
        assert_eq!(
            MessageRecipient::chat_id("oc_xxx"),
            MessageRecipient::new("oc_xxx", ReceiveIdType::ChatId)
        );
    }

    #[cfg(feature = "im")]
    #[test]
    fn test_post_message_serialization() {
        let content = PostMessage::zh_cn("周报", "本周已完成 3 项任务")
            .into_content()
            .expect("post content should serialize");

        let value: serde_json::Value =
            serde_json::from_str(&content).expect("content should be valid json");
        assert_eq!(value["post"]["zh_cn"]["title"], "周报");
        assert_eq!(
            value["post"]["zh_cn"]["content"][0][0]["text"],
            "本周已完成 3 项任务"
        );
    }

    #[cfg(feature = "im")]
    #[test]
    fn test_reply_target_constructors() {
        assert_eq!(
            ReplyTarget::direct("om_xxx"),
            ReplyTarget {
                message_id: "om_xxx".to_string(),
                reply_in_thread: false,
            }
        );
        assert_eq!(
            ReplyTarget::in_thread("om_xxx"),
            ReplyTarget {
                message_id: "om_xxx".to_string(),
                reply_in_thread: true,
            }
        );
    }

    #[cfg(feature = "im")]
    #[test]
    fn test_media_image_upload_defaults() {
        let upload = MediaImageUpload::new(vec![1, 2, 3]).file_name("image.png");
        assert_eq!(upload.image_type, ImageType::Message);
        assert_eq!(upload.file_name.as_deref(), Some("image.png"));
        assert_eq!(upload.bytes, vec![1, 2, 3]);
    }

    #[cfg(feature = "im")]
    #[test]
    fn test_media_file_upload_infers_type() {
        let upload = MediaFileUpload::new("report.pdf", vec![1, 2, 3]).duration(15);
        assert_eq!(upload.file_type, "pdf");
        assert_eq!(upload.file_name, "report.pdf");
        assert_eq!(upload.duration, Some(15));
    }

    #[cfg(feature = "im")]
    #[test]
    fn test_build_text_message_body() {
        let body = ImClient::build_text_body(MessageRecipient::open_id("ou_xxx"), "hello".into())
            .expect("text body should build");
        let request_body: CreateMessageBody = body.into();
        assert_eq!(request_body.msg_type, "text");
        assert_eq!(request_body.receive_id, "ou_xxx");
        assert_eq!(request_body.content, r#"{"text":"hello"}"#);
    }

    #[cfg(feature = "im")]
    #[test]
    fn test_build_post_message_body() {
        let body = ImClient::build_post_body(
            MessageRecipient::chat_id("oc_xxx"),
            PostMessage::zh_cn("项目播报", "今天完成发布"),
        )
        .expect("post body should build");
        let request_body: CreateMessageBody = body.into();
        let value: serde_json::Value =
            serde_json::from_str(&request_body.content).expect("content should be valid json");

        assert_eq!(request_body.msg_type, "post");
        assert_eq!(request_body.receive_id, "oc_xxx");
        assert_eq!(value["post"]["zh_cn"]["title"], "项目播报");
    }

    #[cfg(feature = "im")]
    #[test]
    fn test_build_media_message_body_for_image() {
        let body = ImClient::build_media_body(
            MessageRecipient::open_id("ou_xxx"),
            "image",
            serde_json::json!({ "image_key": "img_xxx" }).to_string(),
        )
        .expect("image body should build");
        let request_body: CreateMessageBody = body.into();
        assert_eq!(request_body.msg_type, "image");
        assert_eq!(request_body.content, r#"{"image_key":"img_xxx"}"#);
    }

    #[cfg(feature = "im")]
    #[test]
    fn test_build_media_message_body_for_file() {
        let body = ImClient::build_media_body(
            MessageRecipient::chat_id("oc_xxx"),
            "file",
            serde_json::json!({ "file_key": "file_xxx" }).to_string(),
        )
        .expect("file body should build");
        let request_body: CreateMessageBody = body.into();
        assert_eq!(request_body.msg_type, "file");
        assert_eq!(request_body.receive_id, "oc_xxx");
        assert_eq!(request_body.content, r#"{"file_key":"file_xxx"}"#);
    }

    #[cfg(feature = "im")]
    #[test]
    fn test_build_reply_text_message_body() {
        let body = ImClient::build_reply_text_body(ReplyTarget::direct("om_xxx"), "收到".into())
            .expect("reply text body should build");
        let request_body: ReplyMessageBody = body.into();
        assert_eq!(request_body.msg_type, "text");
        assert_eq!(request_body.reply_in_thread, Some(false));
        assert_eq!(request_body.content, r#"{"text":"收到"}"#);
    }

    #[cfg(feature = "im")]
    #[test]
    fn test_build_reply_post_message_body() {
        let body = ImClient::build_reply_post_body(
            ReplyTarget::in_thread("om_xxx"),
            PostMessage::zh_cn("进展", "线程内同步"),
        )
        .expect("reply post body should build");
        let request_body: ReplyMessageBody = body.into();
        let value: serde_json::Value =
            serde_json::from_str(&request_body.content).expect("content should be valid json");

        assert_eq!(request_body.msg_type, "post");
        assert_eq!(request_body.reply_in_thread, Some(true));
        assert_eq!(value["post"]["zh_cn"]["title"], "进展");
    }

    #[cfg(feature = "im")]
    #[tokio::test]
    async fn test_send_image_rejects_empty_key() {
        let client = CommunicationClient::new(create_test_config());
        let error = client
            .im
            .send_image(MessageRecipient::open_id("ou_xxx"), "")
            .await
            .expect_err("empty image_key should fail");
        assert!(error.to_string().contains("image_key"));
    }

    #[cfg(feature = "im")]
    #[tokio::test]
    async fn test_send_file_rejects_empty_key() {
        let client = CommunicationClient::new(create_test_config());
        let error = client
            .im
            .send_file(MessageRecipient::chat_id("oc_xxx"), "")
            .await
            .expect_err("empty file_key should fail");
        assert!(error.to_string().contains("file_key"));
    }

    #[cfg(feature = "im")]
    #[tokio::test]
    async fn test_upload_image_rejects_empty_bytes() {
        let client = CommunicationClient::new(create_test_config());
        let error = client
            .im
            .upload_image(MediaImageUpload::new(Vec::new()))
            .await
            .expect_err("empty image bytes should fail");
        assert!(error.to_string().contains("image"));
    }

    #[cfg(feature = "contact")]
    #[test]
    fn test_user_lookup_response_deserializes() {
        let response: UserLookupResponse = serde_json::from_value(serde_json::json!({
            "has_more": true,
            "page_token": "token_1",
            "users": [
                {
                    "name": "zhangsan",
                    "open_id": "ou_xxx",
                    "user_id": "u_xxx",
                    "department_ids": ["od_1"]
                }
            ]
        }))
        .expect("user lookup response should deserialize");

        assert!(response.has_more);
        assert_eq!(response.page_token.as_deref(), Some("token_1"));
        assert_eq!(response.users[0].name, "zhangsan");
        assert_eq!(response.users[0].open_id, "ou_xxx");
    }

    #[cfg(feature = "contact")]
    #[test]
    fn test_find_unique_user_by_name_rejects_duplicates() {
        let users = vec![
            UserLookupItem {
                name: "zhangsan".to_string(),
                open_id: "ou_1".to_string(),
                user_id: None,
                department_ids: vec![],
            },
            UserLookupItem {
                name: "zhangsan".to_string(),
                open_id: "ou_2".to_string(),
                user_id: None,
                department_ids: vec![],
            },
        ];

        let error =
            find_unique_user_by_name(&users, "zhangsan").expect_err("duplicate user should fail");
        assert!(error.to_string().contains("多个同名用户"));
    }

    #[cfg(feature = "im")]
    #[test]
    fn test_chat_lookup_response_deserializes() {
        let response: ChatLookupResponse = serde_json::from_value(serde_json::json!({
            "has_more": false,
            "items": [
                {
                    "chat_id": "oc_xxx",
                    "name": "项目群",
                    "description": "研发群",
                    "owner_id": "ou_owner",
                    "owner_id_type": "open_id",
                    "external": false,
                    "tenant_key": "tenant_key",
                    "chat_status": "normal"
                }
            ]
        }))
        .expect("chat lookup response should deserialize");

        assert!(!response.has_more);
        assert_eq!(response.items[0].chat_id, "oc_xxx");
        assert_eq!(response.items[0].name, "项目群");
    }

    #[cfg(feature = "im")]
    #[test]
    fn test_find_unique_chat_by_name_rejects_duplicates() {
        let chats = vec![
            ChatLookupItem {
                chat_id: "oc_1".to_string(),
                name: "项目群".to_string(),
                description: None,
                owner_id: None,
                owner_id_type: None,
                external: false,
                tenant_key: None,
                chat_status: None,
            },
            ChatLookupItem {
                chat_id: "oc_2".to_string(),
                name: "项目群".to_string(),
                description: None,
                owner_id: None,
                owner_id_type: None,
                external: false,
                tenant_key: None,
                chat_status: None,
            },
        ];

        let error =
            find_unique_chat_by_name(&chats, "项目群").expect_err("duplicate chat should fail");
        assert!(error.to_string().contains("多个同名群聊"));
    }

    #[cfg(feature = "contact")]
    #[test]
    fn test_contact_client_config() {
        let config = create_test_config();
        let client = CommunicationClient::new(config);
        assert_eq!(client.contact.config().app_id(), "test_app");
    }
}