import { defineStore } from 'pinia';
import { ref } from 'vue';
import axios from 'axios';

export const useHistoryStore = defineStore('history', () => {
  // State
  const historyItems = ref([]);
  const isLoading = ref(false);

  // Getters
  const getHistoryItems = () => historyItems.value;
  const getHistoryById = (id) => historyItems.value.find((item) => item.id === id);

  // Actions
  /**
   * 加载历史会话列表
   */
  async function loadHistorySessions() {
    console.log('[historyStore] 开始加载历史会话...');
    isLoading.value = true;
    try {
      const baseUrl = window.__opencodeBaseUrl || 'http://127.0.0.1:4096';
      console.log('[historyStore] baseUrl:', baseUrl);
      const response = await axios.get(`${baseUrl}/session`);
      console.log('[historyStore] 响应数据:', response.data);
      const sessions = response.data || [];
      console.log('[historyStore] 会话数量:', sessions.length);

      // 将会话列表转换为历史记录格式
      historyItems.value = sessions.map((session) => ({
        id: session.id,
        name: session.title || `会话 ${session.slug || session.id.slice(0, 8)}...`,
        slug: session.slug,
        created: session.time?.created,
        updated: session.time?.updated,
      }));
      console.log('[historyStore] 转换后的历史记录:', historyItems.value);
    } catch (err) {
      console.error('[historyStore] 加载历史会话失败:', err);
      historyItems.value = [];
    } finally {
      isLoading.value = false;
    }
  }

  /**
   * 清空历史记录
   */
  function clearHistory() {
    historyItems.value = [];
  }

  /**
   * 添加单个历史记录项（用于新创建的会话）
   */
  function addHistoryItem(item) {
    // 检查是否已存在
    const exists = historyItems.value.find((h) => h.id === item.id);
    if (!exists) {
      historyItems.value.unshift({
        id: item.id,
        name: item.title || `会话 ${item.slug || item.id.slice(0, 8)}...`,
        slug: item.slug,
        created: item.time?.created,
        updated: item.time?.updated,
      });
    }
  }

  /**
   * 创建新会话
   * @param {string} title - 会话标题
   * @returns {Promise<Object>} 创建的会话对象
   */
  async function createSession(title) {
    console.log('[historyStore] 创建新会话，title:', title);
    try {
      const session = await window.opencode.createSession({ title });
      console.log('[historyStore] 创建会话成功:', session);

      // 添加到历史记录
      addHistoryItem(session);

      return session;
    } catch (err) {
      console.error('[historyStore] 创建会话失败:', err);
      throw err;
    }
  }

  return {
    // State
    historyItems,
    isLoading,
    // Getters
    getHistoryItems,
    getHistoryById,
    // Actions
    loadHistorySessions,
    clearHistory,
    addHistoryItem,
    createSession,
  };
});