import { getDictionary } from '@/api/system/dictbiz';
import { processDelete, processSubmit } from '@/api/system/business-process';
import { ElMessage } from 'element-plus';

export const MK_BIZ = {
  'customer-archive': {
    dictName: '提交客商审核流',
    subjectPrefix: '客商准入审批',
    rejected: ['rejected'],
  },
  'project-apply': {
    dictName: '提交项目审核流',
    subjectPrefix: '项目审批',
    rejected: ['rejected', 'change_rejected', 'withdrawn'],
  },
  'contract-manage': {
    dictName: '提交合同审核流',
    subjectPrefix: '合同审批',
    rejected: ['rejected', 'change_rejected', 'withdrawn'],
  },
  'waybill-manage': {
    dictName: '提交运单审核流',
    subjectPrefix: '运单审批',
    rejected: ['rejected', 'returned'],
  },
  'pre-settlement': {
    dictName: '提交预结算审核流',
    subjectPrefix: '预结算审批',
    rejected: ['returned'],
  },
  'formal-settlement': {
    dictName: '提交正式结算审核流',
    subjectPrefix: '正式结算审批',
    rejected: ['returned'],
  },
  'payment-application': {
    dictName: '提交付款审核流',
    subjectPrefix: '付款审批',
    rejected: ['returned'],
  },
};

const MK_SWITCH_NAME = '开启MK';

async function loadMkTemplateList() {
  const res = await getDictionary({ code: 'mk_template' });
  return res?.data?.data || [];
}

/** 业务字典 mk_template：名称「开启MK」且键值为 1 时才请求 MK */
export function isMkEnabled(list = []) {
  const matched = list.find(item => String(item.dictValue || '').trim() === MK_SWITCH_NAME);
  return String(matched?.dictKey ?? '').trim() === '1';
}

export async function resolveMkTemplateCode(dictName, list) {
  const dictList = list || (await loadMkTemplateList());
  const matched = dictList.find(item => String(item.dictValue || '').trim() === dictName);
  const templateCode = matched?.dictKey;
  if (!templateCode) {
    ElMessage.warning(`未配置业务字典 mk_template「${dictName}」，无法提交审核流`);
    return Promise.reject(new Error(`未配置业务字典 mk_template「${dictName}」`));
  }
  return String(templateCode);
}

export async function submitMkApprovalFlow({
  bizType,
  formInstanceId,
  subjectName = '',
  approvalStatus = '',
}) {
  const conf = MK_BIZ[bizType];
  if (!conf) {
    return Promise.reject(new Error(`不支持的MK业务类型：${bizType}`));
  }
  const list = await loadMkTemplateList();
  if (!isMkEnabled(list)) {
    return;
  }
  if ((conf.rejected || []).includes(approvalStatus)) {
    await processDelete({ formInstanceId: String(formInstanceId) });
  }
  const templateCode = await resolveMkTemplateCode(conf.dictName, list);
  const subject = subjectName
    ? `${conf.subjectPrefix}：${subjectName}`
    : `${conf.subjectPrefix}：${formInstanceId}`;
  return processSubmit({
    templateCode,
    formInstanceId: String(formInstanceId),
    subject,
    bizType,
  });
}