import { defineStore } from 'pinia';
import { ref } from 'vue';
import $cache from '@/plugins/cache';

// 草稿数据类型
export interface ProcurementDraft {
  id: string;
  draftNumber: string;
  planName: string;
  saveTime: string;
  content: any;
}

// 保存草稿到本地存储
const saveDraftsToStorage = (drafts: ProcurementDraft[]) => {
  $cache.local.setJSON('procurementDrafts', drafts);
};

// 从本地存储获取草稿
const getDraftsFromStorage = (): ProcurementDraft[] => {
  const stored = $cache.local.getJSON('procurementDrafts');
  return stored && Array.isArray(stored) ? stored : [];
};

export const useProcurementDraftStore = defineStore('procurementDraft', () => {
  const draftList = ref<ProcurementDraft[]>(getDraftsFromStorage());

  // 保存草稿
  const saveDraft = (planName: string, content: any): ProcurementDraft => {
    const today = new Date();
    const dateStr = today.getFullYear() + '-' + 
                   String(today.getMonth() + 1).padStart(2, '0') + '-' + 
                   String(today.getDate()).padStart(2, '0');
    const randomNum = Math.floor(100 + Math.random() * 900);
    const draftNumber = `DRAFT-${dateStr}-${randomNum}`;
    
    const newDraft: ProcurementDraft = {
      id: `draft_${Date.now()}_${randomNum}`,
      draftNumber,
      planName,
      saveTime: new Date().toLocaleString(),
      content: JSON.parse(JSON.stringify(content)) // 深拷贝内容
    };
    
    // 添加到草稿列表并保存到本地存储
    draftList.value.unshift(newDraft);
    saveDraftsToStorage(draftList.value);
    
    return newDraft;
  };

  // 获取草稿列表
  const getDraftList = (): ProcurementDraft[] => {
    return draftList.value;
  };

  // 获取单个草稿
  const getDraft = (draftId: string): ProcurementDraft | undefined => {
    return draftList.value.find(draft => draft.id === draftId);
  };

  // 删除草稿
  const deleteDraft = (draftId: string): boolean => {
    const index = draftList.value.findIndex(draft => draft.id === draftId);
    if (index !== -1) {
      draftList.value.splice(index, 1);
      saveDraftsToStorage(draftList.value);
      return true;
    }
    return false;
  };

  return {
    draftList,
    saveDraft,
    getDraftList,
    getDraft,
    deleteDraft
  };
});