import { WriteFileOptions, ReadFileOptions, MkDirOptions, RmDirOptions, UnLinkOptions, ReadDirOptions, AccessOptions, RenameOptions, GetFileInfoOptions, CopyFileOptions, StatOptions } from "../interface.uts"
import { ReadFileSuccessResult, FileManagerSuccessResult, ReadDirSuccessResult, GetFileInfoSuccessResult, StatSuccessResult, FileStats, Stats } from "../interface.uts"
import { GetFileSystemManager, FileSystemManager } from "../interface.uts"
import { UniErrorSubject, UniErrors } from "../unierror.uts"
export { Stats,FileStats } from '../interface.uts'

class InnerStats implements Stats {
	/**
		 * 文件的类型和存取的权限，对应 POSIX stat.st_mode
		 * 注意android中，文件类型只包含是否是目录与文件，
		 * 另外在android中这里的权限指的是当前进程对文件或者文件夹是否有读，写，执行的权限，
		 * 这里没有与 POSIX stat.st_mode对应的组，其他人等相关权限的数据返回,只有所有者的相关权限
		 */
	mode : number = 0;
	/**
	 * 文件大小，单位：B，对应 POSIX stat.st_size
	 */
	size : number = 0;
	/**
	 * 文件最近一次被存取或被执行的时间，UNIX 时间戳，对应 POSIX stat.st_atime
	 * 注意：android中由于系统限制无法获取该数据
	 */
	lastAccessedTime : number = 0;
	/**
	 * 文件最后一次被修改的时间，UNIX 时间戳，对应 POSIX stat.st_mtime
	 */
	lastModifiedTime : number = 0;
	/**
	 * @internal
	 */
	mIsFile : boolean = false;
	
	constructor() {
	}
	/**
	 * 判断当前文件是否一个目录
	 */
	isDirectory() : boolean {
		return !this.mIsFile
	}
	/**
	 * 判断当前文件是否一个普通文件
	 */
	isFile() : boolean {
		return this.mIsFile
	}
	/**
	 * @internal
	 */
	override toLog() : any | null {
		return this.toJSON()
	}
	/**
	 * @internal
	 */
	override toJSON() : any | null {
		let jsonRet = new UTSJSONObject()
		jsonRet.set("mode", this.mode)
		jsonRet.set("size", this.size)
		jsonRet.set("lastAccessedTime", this.lastAccessedTime)
		jsonRet.set("lastModifiedTime", this.lastModifiedTime)
		return jsonRet
	}

}

function wrapFileStats(nativeStats) : FileStats {
	let stats = new InnerStats()
	stats.mIsFile = nativeStats.isFile
	stats.mode = nativeStats.mode
	stats.size = nativeStats.size
	stats.lastAccessedTime = nativeStats.lastAccessedTime
	stats.lastModifiedTime = nativeStats.lastModifiedTime
	return new FileStats({ path: nativeStats.path, stats: stats })
}

function wrapStatsArgument(nativeStats) : FileStats {
	// if ( nativeStats.length == 1 ){
	// 	return wrapFileStats(nativeStats[0])
	// }
	return nativeStats.map( item => {
		return wrapFileStats(item)
	})
}

class JsFileSystemManager implements FileSystemManager {
	public stat(options : StatOptions) {
		nativeFileManager.stat(options.path,
			options.recursive,
			function (res) {
				var ret = new StatSuccessResult({ stats: wrapStatsArgument(res), "errMsg": "stat:ok" });
				options.success?.(ret)
				options.complete?.(ret)
			},
			function (code) {
				let err = new UniError(UniErrorSubject, code, UniErrors.get(code)! + ":" + options.path);
				options.fail?.(err)
				options.complete?.(err)
			})
	}

	public getFileInfo(options : GetFileInfoOptions) {
		if(options.digestAlgorithm == null || options.digestAlgorithm == undefined){
			options.digestAlgorithm = "md5"
		} else if (options.digestAlgorithm!.toLowerCase() != 'md5' && options.digestAlgorithm!.toLowerCase() != 'sha1') {
			let err = new UniError(UniErrorSubject, 1300022, UniErrors.get(1300022)! + ":invalid digestAlgorithm " + options.digestAlgorithm);
			options.fail?.(err)
			options.complete?.(err)
			return
		}
		
		nativeFileManager.getFileInfo(options.filePath,
			options.digestAlgorithm,
			function (res) {
				var ret = new GetFileInfoSuccessResult({ size: res.size, digest: res.digest, errMsg: "getFileInfo:ok" });
				options.success?.(ret)
				options.complete?.(ret)
			},
			function (code) {
				let err = new UniError(UniErrorSubject, code, UniErrors.get(code)! + ":" + options.filePath);
				options.fail?.(err)
				options.complete?.(err)
			})
	}

	// public copyFileSync(srcPath:string,destPath:string):number{
	// 	return 0
	// }

	public copyFile(options : CopyFileOptions) {
		nativeFileManager.copyFile(options.srcPath,
			options.destPath,
			function (res) {
				var ret = new FileManagerSuccessResult({ "errMsg": "copyFile:ok" });
				options.success?.(ret)
				options.complete?.(ret)
			},
			function (code) {
				let err = new UniError(UniErrorSubject, code, UniErrors.get(code)!);
				options.fail?.(err)
				options.complete?.(err)
			})
	}

	// public renameSync(oldPath:string,newPath:string):number{
	// 	return 0
	// }

	public rename(options : RenameOptions) {
		nativeFileManager.rename(options.oldPath,
			options.newPath,
			function (res) {
				var ret = new FileManagerSuccessResult({ "errMsg": "rename:ok" });
				options.success?.(ret)
				options.complete?.(ret)
			},
			function (code) {
				let err = new UniError(UniErrorSubject, code, UniErrors.get(code)!);
				options.fail?.(err)
				options.complete?.(err)
			})
	}

	// public accessSync(path: string):number{
	// 	return 0
	// }

	public access(options : AccessOptions) {
		nativeFileManager.access(options.path,
			function (res) {
				var ret = new FileManagerSuccessResult({ "errMsg": "access:ok" });
				options.success?.(ret)
				options.complete?.(ret)
			},
			function (code) {
				let err = new UniError(UniErrorSubject, code, UniErrors.get(code)! + ":" + options.path);
				options.fail?.(err)
				options.complete?.(err)
			})
	}

	// readdirSync(dirPath: string): string[]|null{
	// 	return null
	// }

	public readdir(options : ReadDirOptions) {
		nativeFileManager.readdir(options.dirPath,
			function (res) {
				var ret = new ReadDirSuccessResult(res);
				options.success?.(ret)
				options.complete?.(ret)
			},
			function (code) {
				let err = new UniError(UniErrorSubject, code, UniErrors.get(code)! + ":" + options.dirPath);
				options.fail?.(err)
				options.complete?.(err)
			})
	}

	// public rmdirSync(dirPath: string,recursive:boolean): number {
	// 	return 0
	// }

	// public mkdirSync(dirPath: string,recursive:boolean): number {
	// 	return 0
	// }

	public rmdir(options : RmDirOptions) {
		nativeFileManager.rmdir(options.dirPath,
			options.recursive,
			function (res) {
				var ret = new FileManagerSuccessResult({ "errMsg": "rmdir:ok" });
				options.success?.(ret)
				options.complete?.(ret)
			},
			function (code) {
				let err = new UniError(UniErrorSubject, code, UniErrors.get(code)! + ":" + options.dirPath);
				options.fail?.(err)
				options.complete?.(err)
			})
	}

	public mkdir(options : MkDirOptions) {
		nativeFileManager.mkdir(options.dirPath,
			options.recursive,
			function (res) {
				var ret = new FileManagerSuccessResult({ "errMsg": "mkdir:ok" });
				options.success?.(ret)
				options.complete?.(ret)
			},
			function (code) {
				let err = new UniError(UniErrorSubject, code, UniErrors.get(code)! + ":" + options.dirPath);
				options.fail?.(err)
				options.complete?.(err)
			})
	}

	// unlinkSync(filePath: string): number {
	// 	return 0
	// }

	public unlink(options : UnLinkOptions) {
		nativeFileManager.unlink(
			options.filePath,
			function (res) {
				var ret = new FileManagerSuccessResult({ "errMsg": "unlink:ok" });
				options.success?.(ret)
				options.complete?.(ret)
			},
			function (code) {
				let err = new UniError(UniErrorSubject, code, UniErrors.get(code)! + ":" + options.filePath);
				options.fail?.(err)
				options.complete?.(err)
			})
	}

	// public readFileSync(filePath: string,encoding:string): string|null{
	// }

	public readFile(options : ReadFileOptions) {
		nativeFileManager.readFile(options.encoding,
			options.filePath,
			function (res) {
				var ret = new ReadFileSuccessResult(res);
				options.success?.(ret)
				options.complete?.(ret)
			},
			function (code) {
				let err = new UniError(UniErrorSubject, code, UniErrors.get(code)! + ":" + options.filePath);
				options.fail?.(err)
				options.complete?.(err)
			})
	}

	// public writeFileSync(filePath: string,data:string): number{
	// 	return 0
	// }

	public writeFile(options : WriteFileOptions) {
		nativeFileManager.writeFile(options.filePath,
			options.encoding,
			options.data,
			function () {
				var ret = new FileManagerSuccessResult({ "errMsg": "writeFile:ok" });
				options.success?.(ret)
				options.complete?.(ret)
			},
			function (code) {
				let err = new UniError(UniErrorSubject, code, UniErrors.get(code)! + ":" + options.filePath);
				options.fail?.(err)
				options.complete?.(err)
			})
	}
}

export const getFileSystemManager : GetFileSystemManager = function () : FileSystemManager {
	return new JsFileSystemManager()
};