import dayjs from 'dayjs';
import { oss } from '@/app.ts';
import { StatObjectResult } from '@kevisual/oss';
type MinioListOpt = {
  prefix: string;
  recursive?: boolean;
};
export type MinioFile = {
  name: string;
  size: number;
  lastModified: Date;
  etag: string;
};
export type MinioDirectory = {
  prefix: string;
  size: number;
};
export type MinioList = (MinioFile | MinioDirectory)[];
export const getMinioList = async <IS_FILE extends boolean>(opts: MinioListOpt): Promise<IS_FILE extends true ? MinioFile[] : MinioDirectory[]> => {
  const prefix = opts.prefix;
  const recursive = opts.recursive ?? false;
  const res = await oss.listObjects(prefix, { recursive });
  return res as IS_FILE extends true ? MinioFile[] : MinioDirectory[];
};
export const getFileStat = async (prefix: string, isFile?: boolean): Promise<StatObjectResult | null> => {
  try {
    const obj = await oss.statObject(prefix);
    if (isFile && obj?.size === 0) {
      return null;
    }
    return obj;
  } catch (e) {
    if (e.code === 'NotFound') {
      return null;
    }
    console.error('get File Stat Error not handle', e);
    return null;
  }
};

export const deleteFile = async (prefix: string): Promise<{ code: number; message: string }> => {
  try {
    const fileStat = await getFileStat(prefix);
    if (!fileStat) {
      console.warn(`File not found: ${prefix}`);
      return {
        code: 404,
        message: 'file not found',
      };
    }
    await oss.deleteObject(prefix);
    return {
      code: 200,
      message: 'delete success',
    };
  } catch (e) {
    console.error('delete File Error not handle', e);
    return {
      code: 500,
      message: 'delete failed',
    };
  }
};

// 批量删除文件
export const deleteFiles = async (prefixs: string[]): Promise<any> => {
  try {
    for (const prefix of prefixs) {
      await oss.deleteObject(prefix);
    }
    return true;
  } catch (e) {
    console.error('delete Files Error not handle', e);
    return false;
  }
};
export const deleteFileByPrefix = async (prefix: string): Promise<any> => {
  try {
    const allFiles = await getMinioList<true>({ prefix, recursive: true });
    const files = allFiles.filter((item) => item.name.startsWith(prefix));
    await deleteFiles(files.map((item) => item.name));
    return true;
  } catch (e) {
    console.error('delete File Error not handle', e);
    return false;
  }
};
type GetMinioListAndSetToAppListOpts = {
  username: string;
  appKey: string;
  version: string;
};
// 批量列出文件，并设置到appList的files中
export const getMinioListAndSetToAppList = async (opts: GetMinioListAndSetToAppListOpts) => {
  const { username, appKey, version } = opts;
  const minioList = await getMinioList({ prefix: `${username}/${appKey}/${version}`, recursive: true });
  const files = minioList;
  return files as MinioFile[];
};

/**
 * 更新文件的元数据
 * @param prefix 文件前缀
 * @param newMetadata 新的元数据
 * @returns
 */
export const updateFileStat = async (
  prefix: string,
  newMetadata: Record<string, string>,
): Promise<{
  code: number;
  data: any;
  message?: string;
}> => {
  try {
    const copyResult = await oss.replaceObject(prefix, {
      ...newMetadata
    });
    console.log('copyResult', copyResult);
    console.log(`Metadata for ${prefix} updated successfully.`);
    return {
      code: 200,
      data: copyResult,
      message: 'update metadata success',
    };
  } catch (e) {
    console.error('Error updating file stat', e);
    return {
      code: 500,
      data: null,
      message: `update metadata failed. ${e.message}`,
    };
  }
};

/**
 * 将用户A的文件移动到用户B
 * @param usernameA
 * @param usernameB
 * @param clearOldUser 是否清除用户A的文件
 */
export const mvUserAToUserB = async (usernameA: string, usernameB: string, clearOldUser = false) => {
  const oldPrefix = `${usernameA}/`;
  const newPrefix = `${usernameB}/`;
  const listSource = await getMinioList<true>({ prefix: oldPrefix, recursive: true });
  for (const item of listSource) {
    const newName = item.name.slice(oldPrefix.length);
    await oss.copyObject(item.name, `${newPrefix}${newName}`);
  }
  if (clearOldUser) {
    const files = await getMinioList<true>({ prefix: oldPrefix, recursive: true });
    for (const file of files) {
      await oss.deleteObject(file.name);
    }
  }
};
export const backupUserA = async (usernameA: string, id: string, backName?: string) => {
  const today = backName || dayjs().format('YYYY-MM-DD-HH-mm');
  const backupAllPrefix = `private/backup/${id}/`;
  const backupPrefix = `private/backup/${id}/${today}`;
  const backupList = await getMinioList<false>({ prefix: backupAllPrefix });
  const backupListSort = backupList.sort((a, b) => -a.prefix.localeCompare(b.prefix));
  if (backupListSort.length > 2) {
    const deleteBackup = backupListSort.slice(2);
    for (const item of deleteBackup) {
      const files = await getMinioList<true>({ prefix: item.prefix, recursive: true });
      for (const file of files) {
        await oss.deleteObject(file.name);
      }
    }
  }
  await mvUserAToUserB(usernameA, backupPrefix, false);
};
/**
 * 删除用户
 * @param username
 */
export const deleteUser = async (username: string) => {
  const list = await getMinioList<true>({ prefix: `${username}/`, recursive: true });
  for (const item of list) {
    await oss.deleteObject(item.name);
  }
};