/**
 * 聊天接口模块
 * Requirements: 7.1, 7.2, 7.3
 */

import { get, post } from './request'

/**
 * 获取会话列表
 * 
 * @returns {Promise<Object>} 会话列表
 */
export async function getSessions() {
  const response = await get('/chat/sessions')
  return response
}

/**
 * 获取消息列表
 * WHEN a user opens chat page, THE XiangYi_MiniApp SHALL call endpoint and display message history
 * Requirements: 7.1
 * 
 * @param {number} sessionId - 会话ID
 * @param {number} [pageIndex=1] - 页码
 * @param {number} [pageSize=20] - 每页数量
 * @returns {Promise<Object>} 消息列表
 */
export async function getMessages(sessionId, pageIndex = 1, pageSize = 20) {
  const response = await get('/chat/messages', { sessionId, pageIndex, pageSize })
  return response
}

/**
 * 发送消息
 * WHEN a user sends a text message, THE XiangYi_MiniApp SHALL call endpoint
 * Requirements: 7.2
 * 
 * @param {Object} data - 消息数据
 * @param {number} data.sessionId - 会话ID
 * @param {number} data.receiverId - 接收者ID
 * @param {number} data.messageType - 消息类型：1文本 2语音 3图片
 * @param {string} data.content - 消息内容
 * @returns {Promise<Object>} 发送结果
 */
export async function sendMessage(data) {
  const response = await post('/chat/send', data)
  return response
}

/**
 * 请求交换微信
 * WHEN a user clicks "交换微信" button, THE XiangYi_MiniApp SHALL call endpoint
 * Requirements: 7.3
 * 
 * @param {number} sessionId - 会话ID
 * @param {number} receiverId - 接收者ID
 * @returns {Promise<Object>} 交换请求结果
 */
export async function exchangeWeChat(sessionId, receiverId) {
  const response = await post('/chat/exchangeWeChat', { sessionId, receiverId })
  return response
}

/**
 * 请求交换照片
 * 
 * @param {number} sessionId - 会话ID
 * @param {number} receiverId - 接收者ID
 * @returns {Promise<Object>} 交换请求结果
 */
export async function exchangePhoto(sessionId, receiverId) {
  const response = await post('/chat/exchangePhoto', { sessionId, receiverId })
  return response
}

/**
 * 响应交换请求
 * 
 * @param {number} requestMessageId - 请求消息ID
 * @param {boolean} accept - 是否接受
 * @returns {Promise<Object>} 响应结果
 */
export async function respondExchange(requestMessageId, accept) {
  const response = await post('/chat/respondExchange', { requestMessageId, accept })
  return response
}

/**
 * 获取未读消息数
 * 
 * @returns {Promise<Object>} 未读消息数
 */
export async function getUnreadCount() {
  const response = await get('/chat/unreadCount')
  return response
}

export default {
  getSessions,
  getMessages,
  sendMessage,
  exchangeWeChat,
  exchangePhoto,
  respondExchange,
  getUnreadCount
}