479 lines
12 KiB
JavaScript
479 lines
12 KiB
JavaScript
/* jslint node: true */
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'use strict';
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let msgDb = require('./database.js').dbs.message;
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let wordWrapText = require('./word_wrap.js').wordWrapText;
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let ftnUtil = require('./ftn_util.js');
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let createNamedUUID = require('./uuid_util.js').createNamedUUID;
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let uuid = require('node-uuid');
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let async = require('async');
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let _ = require('lodash');
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let assert = require('assert');
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let moment = require('moment');
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const iconvEncode = require('iconv-lite').encode;
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module.exports = Message;
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const ENIGMA_MESSAGE_UUID_NAMESPACE = uuid.parse('154506df-1df8-46b9-98f8-ebb5815baaf8');
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function Message(options) {
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options = options || {};
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this.messageId = options.messageId || 0; // always generated @ persist
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this.areaTag = options.areaTag || Message.WellKnownAreaTags.Invalid;
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if(options.uuid) {
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// note: new messages have UUID generated @ time of persist. See also Message.createMessageUUID()
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this.uuid = options.uuid;
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}
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this.replyToMsgId = options.replyToMsgId || 0;
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this.toUserName = options.toUserName || '';
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this.fromUserName = options.fromUserName || '';
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this.subject = options.subject || '';
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this.message = options.message || '';
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if(_.isDate(options.modTimestamp) || moment.isMoment(options.modTimestamp)) {
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this.modTimestamp = moment(options.modTimestamp);
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} else if(_.isString(options.modTimestamp)) {
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this.modTimestamp = moment(options.modTimestamp);
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}
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this.viewCount = options.viewCount || 0;
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this.meta = {
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System : {}, // we'll always have this one
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};
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if(_.isObject(options.meta)) {
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_.defaultsDeep(this.meta, options.meta);
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}
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if(options.meta) {
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this.meta = options.meta;
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}
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this.hashTags = options.hashTags || [];
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this.isValid = function() {
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// :TODO: validate as much as possible
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return true;
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};
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this.isPrivate = function() {
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return Message.isPrivateAreaTag(this.areaTag);
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};
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this.getMessageTimestampString = function(ts) {
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ts = ts || moment();
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return ts.format('YYYY-MM-DDTHH:mm:ss.SSSZ');
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};
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}
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Message.WellKnownAreaTags = {
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Invalid : '',
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Private : 'private_mail',
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Bulletin : 'local_bulletin',
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};
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Message.isPrivateAreaTag = function(areaTag) {
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return areaTag.toLowerCase() === Message.WellKnownAreaTags.Private;
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};
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Message.SystemMetaNames = {
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LocalToUserID : 'local_to_user_id',
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LocalFromUserID : 'local_from_user_id',
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StateFlags0 : 'state_flags0', // See Message.StateFlags0
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};
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Message.StateFlags0 = {
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None : 0x00000000,
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Imported : 0x00000001, // imported from foreign system
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Exported : 0x00000002, // exported to foreign system
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};
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Message.FtnPropertyNames = {
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FtnOrigNode : 'ftn_orig_node',
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FtnDestNode : 'ftn_dest_node',
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FtnOrigNetwork : 'ftn_orig_network',
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FtnDestNetwork : 'ftn_dest_network',
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FtnAttrFlags : 'ftn_attr_flags',
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FtnCost : 'ftn_cost',
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FtnOrigZone : 'ftn_orig_zone',
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FtnDestZone : 'ftn_dest_zone',
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FtnOrigPoint : 'ftn_orig_point',
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FtnDestPoint : 'ftn_dest_point',
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FtnAttribute : 'ftn_attribute',
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FtnTearLine : 'ftn_tear_line', // http://ftsc.org/docs/fts-0004.001
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FtnOrigin : 'ftn_origin', // http://ftsc.org/docs/fts-0004.001
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FtnArea : 'ftn_area', // http://ftsc.org/docs/fts-0004.001
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FtnSeenBy : 'ftn_seen_by', // http://ftsc.org/docs/fts-0004.001
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};
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// Note: kludges are stored with their names as-is
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Message.prototype.setLocalToUserId = function(userId) {
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this.meta.System.local_to_user_id = userId;
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};
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Message.prototype.setLocalFromUserId = function(userId) {
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this.meta.System.local_from_user_id = userId;
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};
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Message.createMessageUUID = function(areaTag, modTimestamp, subject, body) {
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assert(_.isString(areaTag));
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assert(_.isDate(modTimestamp) || moment.isMoment(modTimestamp));
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assert(_.isString(subject));
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assert(_.isString(body));
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if(!moment.isMoment(modTimestamp)) {
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modTimestamp = moment(modTimestamp);
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}
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areaTag = iconvEncode(areaTag.toUpperCase(), 'CP437');
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modTimestamp = iconvEncode(modTimestamp.format('DD MMM YY HH:mm:ss'), 'CP437');
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subject = iconvEncode(subject.toUpperCase().trim(), 'CP437');
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body = iconvEncode(body.replace(/\r\n|[\n\v\f\r\x85\u2028\u2029]/g, '').trim(), 'CP437');
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return uuid.unparse(createNamedUUID(ENIGMA_MESSAGE_UUID_NAMESPACE, Buffer.concat( [ areaTag, modTimestamp, subject, body ] )));
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}
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Message.getMessageIdByUuid = function(uuid, cb) {
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msgDb.get(
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`SELECT message_id
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FROM message
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WHERE message_uuid = ?
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LIMIT 1;`,
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[ uuid ],
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(err, row) => {
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if(err) {
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cb(err);
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} else {
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const success = (row && row.message_id);
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cb(success ? null : new Error('No match'), success ? row.message_id : null);
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}
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}
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);
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};
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Message.getMessageIdsByMetaValue = function(category, name, value, cb) {
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msgDb.all(
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`SELECT message_id
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FROM message_meta
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WHERE meta_category = ? AND meta_name = ? AND meta_value = ?;`,
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[ category, name, value ],
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(err, rows) => {
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if(err) {
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cb(err);
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} else {
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cb(null, rows.map(r => parseInt(r.message_id))); // return array of ID(s)
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}
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}
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);
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};
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Message.getMetaValuesByMessageId = function(messageId, category, name, cb) {
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const sql =
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`SELECT meta_value
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FROM message_meta
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WHERE message_id = ? AND meta_category = ? AND meta_name = ?;`;
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msgDb.all(sql, [ messageId, category, name ], (err, rows) => {
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if(err) {
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return cb(err);
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}
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if(0 === rows.length) {
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return cb(new Error('No value for category/name'));
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}
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// single values are returned without an array
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if(1 === rows.length) {
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return cb(null, rows[0].meta_value);
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}
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cb(null, rows.map(r => r.meta_value)); // map to array of values only
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});
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};
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Message.getMetaValuesByMessageUuid = function(uuid, category, name, cb) {
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async.waterfall(
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[
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function getMessageId(callback) {
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Message.getMessageIdByUuid(uuid, (err, messageId) => {
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callback(err, messageId);
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});
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},
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function getMetaValues(messageId, callback) {
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Message.getMetaValuesByMessageId(messageId, category, name, (err, values) => {
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callback(err, values);
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});
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}
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],
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(err, values) => {
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cb(err, values);
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}
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);
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};
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Message.prototype.loadMeta = function(cb) {
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/*
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Example of loaded this.meta:
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meta: {
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System: {
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local_to_user_id: 1234,
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},
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FtnProperty: {
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ftn_seen_by: [ "1/102 103", "2/42 52 65" ]
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}
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}
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*/
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const sql =
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`SELECT meta_category, meta_name, meta_value
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FROM message_meta
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WHERE message_id = ?;`;
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let self = this;
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msgDb.each(sql, [ this.messageId ], (err, row) => {
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if(!(row.meta_category in self.meta)) {
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self.meta[row.meta_category] = { };
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self.meta[row.meta_category][row.meta_name] = row.meta_value;
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} else {
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if(!(row.meta_name in self.meta[row.meta_category])) {
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self.meta[row.meta_category][row.meta_name] = row.meta_value;
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} else {
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if(_.isString(self.meta[row.meta_category][row.meta_name])) {
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self.meta[row.meta_category][row.meta_name] = [ self.meta[row.meta_category][row.meta_name] ];
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}
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self.meta[row.meta_category][row.meta_name].push(row.meta_value);
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}
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}
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}, err => {
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cb(err);
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});
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};
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Message.prototype.load = function(options, cb) {
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assert(_.isString(options.uuid));
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var self = this;
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async.series(
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[
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function loadMessage(callback) {
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msgDb.get(
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'SELECT message_id, area_tag, message_uuid, reply_to_message_id, to_user_name, from_user_name, subject, ' +
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'message, modified_timestamp, view_count ' +
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'FROM message ' +
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'WHERE message_uuid=? ' +
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'LIMIT 1;',
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[ options.uuid ],
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(err, msgRow) => {
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if(err) {
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return callback(err);
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}
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if(!msgRow) {
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return callback(new Error('Message (no longer) available'));
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}
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self.messageId = msgRow.message_id;
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self.areaTag = msgRow.area_tag;
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self.messageUuid = msgRow.message_uuid;
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self.replyToMsgId = msgRow.reply_to_message_id;
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self.toUserName = msgRow.to_user_name;
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self.fromUserName = msgRow.from_user_name;
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self.subject = msgRow.subject;
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self.message = msgRow.message;
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self.modTimestamp = moment(msgRow.modified_timestamp);
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self.viewCount = msgRow.view_count;
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callback(err);
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}
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);
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},
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function loadMessageMeta(callback) {
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self.loadMeta(err => {
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callback(err);
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});
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},
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function loadHashTags(callback) {
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// :TODO:
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callback(null);
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}
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],
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function complete(err) {
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cb(err);
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}
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);
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};
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Message.prototype.persistMetaValue = function(category, name, value, cb) {
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const metaStmt = msgDb.prepare(
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`INSERT INTO message_meta (message_id, meta_category, meta_name, meta_value)
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VALUES (?, ?, ?, ?);`);
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if(!_.isArray(value)) {
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value = [ value ];
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}
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let self = this;
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async.each(value, (v, next) => {
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metaStmt.run(self.messageId, category, name, v, err => {
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next(err);
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});
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}, err => {
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cb(err);
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});
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};
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Message.startTransaction = function(cb) {
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msgDb.run('BEGIN;', err => {
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cb(err);
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});
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};
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Message.endTransaction = function(hadError, cb) {
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msgDb.run(hadError ? 'ROLLBACK;' : 'COMMIT;', err => {
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cb(err);
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});
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};
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Message.prototype.persist = function(cb) {
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if(!this.isValid()) {
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return cb(new Error('Cannot persist invalid message!'));
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}
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const self = this;
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async.series(
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[
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function beginTransaction(callback) {
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Message.startTransaction(err => {
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return callback(err);
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});
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},
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function storeMessage(callback) {
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// generate a UUID for this message if required (general case)
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const msgTimestamp = moment();
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if(!self.uuid) {
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self.uuid = Message.createMessageUUID(
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self.areaTag,
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msgTimestamp,
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self.subject,
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self.message);
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}
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msgDb.run(
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`INSERT INTO message (area_tag, message_uuid, reply_to_message_id, to_user_name, from_user_name, subject, message, modified_timestamp)
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VALUES (?, ?, ?, ?, ?, ?, ?, ?);`,
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[ self.areaTag, self.uuid, self.replyToMsgId, self.toUserName, self.fromUserName, self.subject, self.message, self.getMessageTimestampString(msgTimestamp) ],
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function inserted(err) { // use non-arrow function for 'this' scope
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if(!err) {
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self.messageId = this.lastID;
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}
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return callback(err);
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}
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);
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},
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function storeMeta(callback) {
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if(!self.meta) {
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return callback(null);
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}
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/*
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Example of self.meta:
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meta: {
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System: {
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local_to_user_id: 1234,
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},
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FtnProperty: {
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ftn_seen_by: [ "1/102 103", "2/42 52 65" ]
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}
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}
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*/
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async.each(Object.keys(self.meta), (category, nextCat) => {
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async.each(Object.keys(self.meta[category]), (name, nextName) => {
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self.persistMetaValue(category, name, self.meta[category][name], err => {
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nextName(err);
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});
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}, err => {
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nextCat(err);
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});
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}, err => {
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callback(err);
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});
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},
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function storeHashTags(callback) {
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// :TODO: hash tag support
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return callback(null);
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}
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],
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err => {
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Message.endTransaction(err, transErr => {
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return cb(err ? err : transErr, self.messageId);
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});
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}
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);
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};
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Message.prototype.getFTNQuotePrefix = function(source) {
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source = source || 'fromUserName';
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return ftnUtil.getQuotePrefix(this[source]);
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};
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Message.prototype.getQuoteLines = function(width, options) {
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// :TODO: options.maxBlankLines = 1
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options = options || {};
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//
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// Include FSC-0032 style quote prefixes?
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//
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// See http://ftsc.org/docs/fsc-0032.001
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//
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if(!_.isBoolean(options.includePrefix)) {
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options.includePrefix = true;
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}
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var quoteLines = [];
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var origLines = this.message
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.trim()
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.replace(/\b/g, '')
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.split(/\r\n|[\n\v\f\r\x85\u2028\u2029]/g);
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var quotePrefix = ''; // we need this init even if blank
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if(options.includePrefix) {
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quotePrefix = this.getFTNQuotePrefix(options.prefixSource || 'fromUserName');
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}
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var wrapOpts = {
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width : width - quotePrefix.length,
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tabHandling : 'expand',
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tabWidth : 4,
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};
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function addPrefix(l) {
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return quotePrefix + l;
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}
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var wrapped;
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for(var i = 0; i < origLines.length; ++i) {
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wrapped = wordWrapText(origLines[i], wrapOpts).wrapped;
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Array.prototype.push.apply(quoteLines, _.map(wrapped, addPrefix));
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}
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return quoteLines;
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};
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