import Parse from './parse-client.js';
import { checkParseDatabase } from './parse-health.service.js';

function isSchemaExistsError(msg: string): boolean {
  return (
    msg.includes('already exists')
    || msg.includes('Class already exists')
    || msg.includes('exists, cannot update')
    || msg.includes('Field already exists')
  );
}

async function ensureClassFields(
  className: string,
  fields: Record<string, 'String' | 'Number' | 'Date' | 'Array' | 'Boolean'>,
): Promise<void> {
  let added = 0;

  for (const [name, type] of Object.entries(fields)) {
    try {
      const schema = new Parse.Schema(className);
      schema.addField(name, type);
      await schema.update({ useMasterKey: true });
      added++;
    } catch (err: unknown) {
      const msg = err instanceof Error ? err.message : String(err);
      if (!isSchemaExistsError(msg)) {
        try {
          const schema = new Parse.Schema(className);
          schema.addField(name, type);
          await schema.save({ useMasterKey: true });
          added++;
        } catch (saveErr: unknown) {
          const saveMsg = saveErr instanceof Error ? saveErr.message : String(saveErr);
          if (!isSchemaExistsError(saveMsg)) {
            console.warn(`[Schema] ${className}.${name}:`, saveMsg);
          }
        }
      }
    }
  }

  console.log(`[Schema] ${className} — fields ensured (${Object.keys(fields).length} total, ${added} applied)`);
}

export async function ensureSchemas(): Promise<void> {
  const parseStatus = await checkParseDatabase();
  if (!parseStatus.connected) {
    console.warn('[Schema] Parse 不可用，跳过 Schema 检查:', parseStatus.error);
    return;
  }

  await ensureClassFields('GroupChat', {
    roomId: 'String',
    roomName: 'String',
    ownerId: 'String',
    ownerName: 'String',
    ownerRole: 'String',
    memberCount: 'Number',
    avatarUrl: 'String',
    status: 'String',
    guid: 'String',
    storeId: 'String',
    storeName: 'String',
    communityId: 'String',
    communityName: 'String',
    activityLevel: 'String',
    healthScore: 'Number',
    healthStatus: 'String',
    hasDocument: 'Boolean',
    documentPinned: 'Boolean',
    documentInNotice: 'Boolean',
    messageCountToday: 'Number',
    messageCountTotal: 'Number',
    memberChange24h: 'Number',
    lifecyclePhase: 'String',
    healthGrade: 'String',
    opsActivityScore: 'Number',
    customerActivityScore: 'Number',
  });

  await ensureClassFields('Store', {
    code: 'String',
    name: 'String',
    region: 'String',
    status: 'String',
  });

  await ensureClassFields('Community', {
    name: 'String',
    storeId: 'String',
    storeName: 'String',
    address: 'String',
    status: 'String',
    deliveryDate: 'String',
    lifecyclePhase: 'String',
    totalHouseholds: 'Number',
    avgPrice: 'Number',
    groupCount: 'Number',
  });

  await ensureClassFields('GroupMember', {
    roomId: 'String',
    userId: 'String',
    nickname: 'String',
    status: 'String',
    joinedAt: 'Date',
    leftAt: 'Date',
    guid: 'String',
  });

  await ensureClassFields('Message', {
    msgUniqueIdentifier: 'String',
    roomId: 'String',
    senderId: 'String',
    senderName: 'String',
    receiverId: 'String',
    content: 'String',
    atList: 'Array',
    msgType: 'Number',
    isGroupChat: 'Number',
    timestamp: 'Date',
    guid: 'String',
    seq: 'Number',
  });

  await ensureClassFields('_User', {
    phone: 'String',
    appSource: 'String',
    name: 'String',
    email: 'String',
    role: 'String',
    storeId: 'String',
    storeName: 'String',
    wecomUserId: 'String',
    regionCode: 'String',
    department: 'String',
    position: 'String',
  });

  await ensureClassFields('OrgDepartment', {
    partyId: 'String',
    name: 'String',
    parentPartyId: 'String',
    regionCode: 'String',
    storeId: 'String',
    orderIndex: 'Number',
    syncedAt: 'Date',
  });

  await ensureClassFields('OrgMember', {
    userId: 'String',
    name: 'String',
    partyIds: 'Array',
    mobile: 'String',
    position: 'String',
    syncedAt: 'Date',
  });

  await ensureClassFields('SystemMigration', {
    key: 'String',
    completedAt: 'Date',
    valueNumber: 'Number',
  });
}