/**
 * elFinder transport to support old protocol.
 *
 * @example
 * $('selector').elfinder({
 *   ....
 *   transport : new elFinderSupportVer1()
 * })
 *
 * @author Dmitry (dio) Levashov
 **/
window.elFinderSupportVer1 = function(upload) {
"use strict";
var self = this,
dateObj, today, yesterday,
getDateString = function(date) {
return date.replace('Today', today).replace('Yesterday', yesterday);
};

dateObj = new Date();
today = dateObj.getFullYear() + '/' + (dateObj.getMonth() + 1) + '/' + dateObj.getDate();
dateObj = new Date(Date.now() - 86400000);
yesterday = dateObj.getFullYear() + '/' + (dateObj.getMonth() + 1) + '/' + dateObj.getDate();

this.upload = upload || 'auto';

this.init = function(fm) {
this.fm = fm;
this.fm.parseUploadData = function(text) {
var data;

if (!$.trim(text)) {
return {error : ['errResponse', 'errDataEmpty']};
}

try {
data = JSON.parse(text);
} catch (e) {
return {error : ['errResponse', 'errDataNotJSON']};
}

return self.normalize('upload', data);
};
};


this.send = function(opts) {
var self = this,
fm = this.fm,
dfrd = $.Deferred(),
cmd = opts.data.cmd,
args = [],
_opts = {},
data,
xhr;

dfrd.abort = function() {
if (xhr.state() == 'pending') {
xhr.quiet = true;
xhr.abort();
}
};

switch (cmd) {
case 'open':
opts.data.tree = 1;
break;
case 'parents':
case 'tree':
return dfrd.resolve({tree : []});
case 'get':
opts.data.cmd = 'read';
opts.data.current = fm.file(opts.data.target).phash;
break;
case 'put':
opts.data.cmd = 'edit';
opts.data.current = fm.file(opts.data.target).phash;
break;
case 'archive':
case 'rm':
opts.data.current = fm.file(opts.data.targets[0]).phash;
break;
case 'extract':
case 'rename':
case 'resize':
opts.data.current = fm.file(opts.data.target).phash;
break;
case 'duplicate':
_opts = $.extend(true, {}, opts);

$.each(opts.data.targets, function(i, hash) {
$.ajax(Object.assign(_opts, {data : {cmd : 'duplicate', target : hash, current : fm.file(hash).phash}}))
.fail(function(error) {
fm.error(fm.res('error', 'connect'));
})
.done(function(data) {
data = self.normalize('duplicate', data);
if (data.error) {
fm.error(data.error);
} else if (data.added) {
fm.trigger('add', {added : data.added});
}
});
});
return dfrd.resolve({});

case 'mkdir':
case 'mkfile':
opts.data.current = opts.data.target;
break;
case 'paste':
opts.data.current = opts.data.dst;
if (! opts.data.tree) {
$.each(opts.data.targets, function(i, h) {
if (fm.file(h) && fm.file(h).mime === 'directory') {
opts.data.tree = '1';
return false;
}
});
}
break;

case 'size':
return dfrd.resolve({error : fm.res('error', 'cmdsupport')});
case 'search':
return dfrd.resolve({error : fm.res('error', 'cmdsupport')});

case 'file':
opts.data.cmd = 'open';
opts.data.current = fm.file(opts.data.target).phash;
break;
}
// cmd = opts.data.cmd

xhr = $.ajax(opts)
.fail(function(error) {
dfrd.reject(error);
})
.done(function(raw) {
data = self.normalize(cmd, raw);
dfrd.resolve(data);
});

return dfrd;
};

// fix old connectors errors messages as possible
// this.errors = {
// 'Unknown command'                                  : 'Unknown command.',
// 'Invalid backend configuration'                    : 'Invalid backend configuration.',
// 'Access denied'                                    : 'Access denied.',
// 'PHP JSON module not installed'                    : 'PHP JSON module not installed.',
// 'File not found'                                   : 'File not found.',
// 'Invalid name'                                     : 'Invalid file name.',
// 'File or folder with the same name already exists' : 'File named "$1" already exists in this location.',
// 'Not allowed file type'                            : 'Not allowed file type.',
// 'File exceeds the maximum allowed filesize'        : 'File exceeds maximum allowed size.',
// 'Unable to copy into itself'                       : 'Unable to copy "$1" into itself.',
// 'Unable to create archive'                         : 'Unable to create archive.',
// 'Unable to extract files from archive'             : 'Unable to extract files from "$1".'
// }

this.normalize = function(cmd, data) {
var self = this,
fm   = this.fm,
files = {},
filter = function(file) { return file && file.hash && file.name && file.mime ? file : null; },
getDirs = function(items) {
return $.grep(items, function(i) {
return i && i.mime && i.mime === 'directory'? true : false;
});
},
getTreeDiff = function(files) {
var dirs = getDirs(files);
treeDiff = fm.diff(dirs, null, ['date', 'ts']);
if (treeDiff.added.length) {
treeDiff.added = getDirs(treeDiff.added);
}
if (treeDiff.changed.length) {
treeDiff.changed = getDirs(treeDiff.changed);
}
if (treeDiff.removed.length) {
var removed = [];
$.each(treeDiff.removed, function(i, h) {
var item;
if ((item = fm.file(h)) && item.mime === 'directory') {
removed.push(h);
}
});
treeDiff.removed = removed;
}
return treeDiff;
},
phash, diff, isCwd, treeDiff;

if ((cmd == 'tmb' || cmd == 'get')) {
return data;
}

// if (data.error) {
// $.each(data.error, function(i, msg) {
// if (self.errors[msg]) {
// data.error[i] = self.errors[msg];
// }
// });
// }

if (cmd == 'upload' && data.error && data.cwd) {
data.warning = Object.assign({}, data.error);
data.error = false;
}


if (data.error) {
return data;
}

if (cmd == 'put') {

phash = fm.file(data.target.hash).phash;
return {changed : [this.normalizeFile(data.target, phash)]};
}

phash = data.cwd.hash;

isCwd = (phash == fm.cwd().hash);

if (data.tree) {
$.each(this.normalizeTree(data.tree), function(i, file) {
files[file.hash] = file;
});
}

$.each(data.cdc||[], function(i, file) {
var hash = file.hash,
mcts;

if (files[hash]) {
if (file.date) {
mcts = Date.parse(getDateString(file.date));
if (mcts && !isNaN(mcts)) {
files[hash].ts = Math.floor(mcts / 1000);
} else {
files[hash].date = file.date || fm.formatDate(file);
}
}
files[hash].locked = file.hash == phash ? true : file.rm === void(0) ? false : !file.rm;
} else {
files[hash] = self.normalizeFile(file, phash, data.tmb);
}
});

if (!data.tree) {
$.each(fm.files(), function(hash, file) {
if (!files[hash] && file.phash != phash && file.mime == 'directory') {
files[hash] = file;
}
});
}

if (cmd == 'open') {
return {
cwd     : files[phash] || this.normalizeFile(data.cwd),
files   : $.map(files, function(f) { return f; }),
options : self.normalizeOptions(data),
init    : !!data.params,
debug   : data.debug
};
}

if (isCwd) {
diff = fm.diff($.map(files, filter));
} else {
if (data.tree && cmd !== 'paste') {
diff = getTreeDiff(files);
} else {
diff = {
added   : [],
removed : [],
changed : []
};
if (cmd === 'paste') {
diff.sync = true;
}
}
}

return Object.assign({
current : data.cwd.hash,
error   : data.error,
warning : data.warning,
options : {tmb : !!data.tmb}
}, diff);

};

/**
* Convert old api tree into plain array of dirs
*
* @param  Object  root dir
* @return Array
*/
this.normalizeTree = function(root) {
var self     = this,
result   = [],
traverse = function(dirs, phash) {
var i, dir;

for (i = 0; i < dirs.length; i++) {
dir = dirs[i];
result.push(self.normalizeFile(dir, phash));
dir.dirs.length && traverse(dir.dirs, dir.hash);
}
};

traverse([root]);

return result;
};

/**
* Convert file info from old api format into new one
*
* @param  Object  file
* @param  String  parent dir hash
* @return Object
*/
this.normalizeFile = function(file, phash, tmb) {
var mime = file.mime || 'directory',
size = mime == 'directory' && !file.linkTo ? 0 : file.size,
mcts = file.date? Date.parse(getDateString(file.date)) : void 0,
info = {
url    : file.url,
hash   : file.hash,
phash  : phash,
name   : file.name,
mime   : mime,
ts     : file.ts,
size   : size,
read   : file.read,
write  : file.write,
locked : !phash ? true : file.rm === void(0) ? false : !file.rm
};

if (! info.ts) {
if (mcts && !isNaN(mcts)) {
info.ts = Math.floor(mcts / 1000);
} else {
info.date = file.date || this.fm.formatDate(file);
}
}

if (file.mime == 'application/x-empty' || file.mime == 'inode/x-empty') {
info.mime = 'text/plain';
}

if (file.linkTo) {
info.alias = file.linkTo;
}

if (file.linkTo) {
info.linkTo = file.linkTo;
}

if (file.tmb) {
info.tmb = file.tmb;
} else if (info.mime.indexOf('image/') === 0 && tmb) {
info.tmb = 1;

}

if (file.dirs && file.dirs.length) {
info.dirs = true;
}
if (file.dim) {
info.dim = file.dim;
}
if (file.resize) {
info.resize = file.resize;
}
return info;
};

this.normalizeOptions = function(data) {
var opts = {
path          : data.cwd.rel,
disabled      : $.merge((data.disabled || []), [ 'search', 'netmount', 'zipdl' ]),
tmb           : !!data.tmb,
copyOverwrite : true
};

if (data.params) {
opts.api      = 1;
opts.url      = data.params.url;
opts.archivers = {
create  : data.params.archives || [],
extract : data.params.extract || []
};
}

if (opts.path.indexOf('/') !== -1) {
opts.separator = '/';
} else if (opts.path.indexOf('\\') !== -1) {
opts.separator = '\\';
}
return opts;
};
};