"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
Object.defineProperty(exports, "__esModule", { value: true });
const ssh2_1 = require("ssh2");
const path = require("path");
const fs = require("fs");
const util_1 = require("./util");
const queuifiedSftp_1 = require("./queuifiedSftp");
const syncTable_1 = require("./syncTable");
/**
 * Creates a new SftpDeploy instance
 * @class
 */
class SftpSync {
    /**
     * Constructor
     */
    constructor(config, options) {
        /**
         * Whether a SSH2 connection has been made or not
         */
        this.connected = false;
        this.config = config;
        this.options = Object.assign({ dryRun: false, exclude: [], excludeMode: 'remove', concurrency: 100 }, options);
        this.client = new ssh2_1.Client;
        this.localRoot = util_1.chomp(path.resolve(this.config.localDir), path.sep);
        this.remoteRoot = util_1.chomp(this.config.remoteDir, path.posix.sep);
    }
    /**
     * Make SSH2 connection
     */
    connect() {
        let privKeyRaw;
        if (this.config.privateKey) {
            try {
                privKeyRaw = fs.readFileSync(this.config.privateKey);
            }
            catch (err) {
                throw new Error(`Local Error: Private key file not found ${this.config.privateKey}`);
            }
        }
        return new Promise((resolve, reject) => {
            this.client
                .on('ready', () => {
                this.connected = true;
                resolve();
            })
                .on('error', err_1 => {
                reject(new Error(`Connection Error: ${err_1.message}`));
            })
                .connect({
                host: this.config.host,
                port: this.config.port || 22,
                username: this.config.username,
                password: this.config.password,
                passphrase: this.config.passphrase,
                privateKey: privKeyRaw,
                agent: this.config.agent
            });
        });
    }
    /**
     * Close SSH2 connection
     */
    close() {
        this.connected = false;
        this.client.end();
    }
    /**
     * Sync with specified path
     */
    sync(relativePath = '', isRootTask = true) {
        return __awaiter(this, void 0, void 0, function* () {
            const table = yield this.buildSyncTable(relativePath);
            yield Promise.all(table.all.map((entry) => __awaiter(this, void 0, void 0, function* () {
                const task = entry.getTask();
                const args = [entry.path, false];
                if (this.options.dryRun) {
                    entry.dryRunLog();
                    if (task.method === 'sync') {
                        return this.sync(entry.path, false);
                    }
                    return;
                }
                if (task.removeRemote) {
                    yield this.removeRemote(entry.path, false);
                }
                if (task.method === 'sync' && entry.remoteStat !== 'dir') {
                    yield this.createRemoteDirectory(entry.path);
                }
                yield this[task.method].apply(this, args);
                entry.liveRunLog();
            })));
            if (isRootTask)
                this.close();
        });
    }
    /**
     * Upload file/directory
     */
    upload(relativePath, isRootTask = true) {
        return __awaiter(this, void 0, void 0, function* () {
            if (!this.queuifiedSftp) {
                yield this.initQueuifiedSftp();
                return this.upload(relativePath, isRootTask);
            }
            const localPath = this.localFullPath(relativePath);
            const remotePath = this.remoteFullPath(relativePath);
            const stat = fs.lstatSync(localPath);
            if (stat.isDirectory()) {
                const files = fs.readdirSync(localPath);
                if (files && files.length) {
                    yield Promise.all(files.map(filename => this.upload(path.posix.join(relativePath, filename), false)));
                }
            }
            else {
                try {
                    // const buffer = fs.readFileSync(localPath);
                    // const handle = await this.queuifiedSftp.open(remotePath, 'r+');
                    // await this.queuifiedSftp.writeData(handle, buffer, 0, buffer.length, 0);
                    // await this.queuifiedSftp.close(handle);
                    yield this.queuifiedSftp.fastPut(localPath, remotePath);
                }
                catch (err) {
                    switch (err.code) {
                        case ssh2_1.SFTP_STATUS_CODE.NO_SUCH_FILE: {
                            throw new Error(`Remote Error: Cannot upload file ${remotePath}`);
                        }
                        case ssh2_1.SFTP_STATUS_CODE.PERMISSION_DENIED: {
                            throw new Error(`Remote Error: Cannot upload file. Permission denied ${remotePath}`);
                        }
                        case ssh2_1.SFTP_STATUS_CODE.FAILURE: {
                            throw new Error(`Remote Error: Unknown error while uploading file ${remotePath}`);
                        }
                        default: throw err;
                    }
                }
            }
            if (isRootTask)
                this.close();
        });
    }
    /**
     * Remove a remote file or directory
     */
    removeRemote(relativePath, isRootTask = true) {
        return __awaiter(this, void 0, void 0, function* () {
            if (!this.queuifiedSftp) {
                yield this.initQueuifiedSftp();
                return this.removeRemote(relativePath, isRootTask);
            }
            const remotePath = this.remoteFullPath(relativePath);
            const stat = yield this.queuifiedSftp.lstat(remotePath);
            if (stat.isDirectory()) {
                const files = yield this.queuifiedSftp.readdir(remotePath);
                yield Promise.all(files.map(file => this.removeRemote(path.posix.join(relativePath, file.filename), false)));
                yield this.queuifiedSftp.rmdir(remotePath);
            }
            else {
                return this.queuifiedSftp.unlink(remotePath);
            }
            if (isRootTask)
                this.close();
        });
    }
    /**
     * No operation
     */
    noop() {
        return __awaiter(this, void 0, void 0, function* () {
            return;
        });
    }
    /**
     * Create a directory on a remote host
     */
    createRemoteDirectory(relativePath) {
        return __awaiter(this, void 0, void 0, function* () {
            if (!this.queuifiedSftp) {
                yield this.initQueuifiedSftp();
                return this.createRemoteDirectory(relativePath);
            }
            const remotePath = this.remoteFullPath(relativePath);
            try {
                yield this.queuifiedSftp.mkdir(remotePath);
            }
            catch (err) {
                switch (err.code) {
                    case ssh2_1.SFTP_STATUS_CODE.NO_SUCH_FILE: {
                        throw new Error(`Remote Error: Cannot create directory ${remotePath}`);
                    }
                    case ssh2_1.SFTP_STATUS_CODE.PERMISSION_DENIED: {
                        throw new Error(`Remote Error: Cannot create directory. Permission denied ${remotePath}`);
                    }
                    case ssh2_1.SFTP_STATUS_CODE.FAILURE: {
                        throw new Error(`Remote Error: Unknown error while creating directory ${remotePath}`);
                    }
                    default: throw err;
                }
            }
        });
    }
    /**
     * Build a local and remote files status report for the specified path
     */
    buildSyncTable(relativePath) {
        return __awaiter(this, void 0, void 0, function* () {
            if (!this.queuifiedSftp) {
                yield this.initQueuifiedSftp();
                return this.buildSyncTable(relativePath);
            }
            const localPath = this.localFullPath(relativePath);
            const remotePath = this.remoteFullPath(relativePath);
            const table = new syncTable_1.SyncTable(relativePath, this.options);
            const readLocal = () => __awaiter(this, void 0, void 0, function* () {
                let files;
                try {
                    files = fs.readdirSync(localPath);
                }
                catch (err) {
                    switch (err.code) {
                        case 'ENOENT': throw new Error(`Local Error: No such directory ${localPath}`);
                        case 'ENOTDIR': throw new Error(`Local Error: Not a directory ${localPath}`);
                        case 'EPERM': throw new Error(`Local Error: Cannot read directory. Permission denied ${localPath}`);
                        default: throw err;
                    }
                }
                if (!files || !files.length)
                    return;
                yield Promise.all(files.map((filename) => __awaiter(this, void 0, void 0, function* () {
                    const fullPath = path.join(localPath, filename);
                    let stat;
                    try {
                        fs.accessSync(fullPath, fs.constants.R_OK);
                        stat = fs.lstatSync(fullPath);
                    }
                    catch (err) {
                        if (err.code === 'EPERM' || err.code === 'EACCES') {
                            table.set(filename, { localStat: 'error', localTimestamp: null });
                        }
                        return;
                    }
                    const mtime = Math.floor(new Date(stat.mtime).getTime() / 1000);
                    table.set(filename, {
                        localStat: stat.isDirectory() ? 'dir' : 'file',
                        localTimestamp: mtime
                    });
                })));
            });
            const readRemote = () => __awaiter(this, void 0, void 0, function* () {
                let files;
                try {
                    files = yield this.queuifiedSftp.readdir(remotePath);
                }
                catch (err) { }
                if (!files || !files.length)
                    return;
                yield Promise.all(files.map((file) => __awaiter(this, void 0, void 0, function* () {
                    const fullPath = path.posix.join(remotePath, file.filename);
                    let stat;
                    try {
                        stat = yield this.queuifiedSftp.lstat(fullPath);
                        if (stat.isDirectory()) {
                            yield this.queuifiedSftp.readdir(fullPath);
                        }
                        else {
                            const buffer = yield this.queuifiedSftp.open(fullPath, 'r+');
                            yield this.queuifiedSftp.close(buffer);
                        }
                    }
                    catch (err) {
                        if (err.code === ssh2_1.SFTP_STATUS_CODE.PERMISSION_DENIED) {
                            table.set(file.filename, { remoteStat: 'error', remoteTimestamp: null });
                        }
                        return;
                    }
                    if (stat) {
                        table.set(file.filename, {
                            remoteStat: stat.isDirectory() ? 'dir' : 'file',
                            remoteTimestamp: stat.mtime
                        });
                    }
                })));
            });
            yield Promise.all([readLocal(), readRemote()]);
            return table.forEach(entry => entry.detectExclusion());
        });
    }
    /**
     * Get an async version of sftp stream
     */
    initQueuifiedSftp(concurrency = this.options.concurrency) {
        return __awaiter(this, void 0, void 0, function* () {
            if (this.queuifiedSftp) {
                return this.queuifiedSftp;
            }
            if (!this.connected) {
                yield this.connect();
                return this.initQueuifiedSftp(concurrency);
            }
            this.queuifiedSftp = yield queuifiedSftp_1.QueuifiedSFTP.init(this.client, concurrency);
            return this.queuifiedSftp;
        });
    }
    /**
     * Get a full path of a local file or directory
     */
    localFullPath(relativePath) {
        return path.join(this.localRoot, relativePath);
    }
    /**
     * Get a full path of a remote file or directory
     */
    remoteFullPath(relativePath) {
        return path.posix.join(this.remoteRoot, relativePath);
    }
}
exports.SftpSync = SftpSync;