enigma-bbs/core/message.js

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