/**
* In chrome, open the console in the developer tools extension
* Select the mailbox folder which you want to clean
* Run this code in the console
* Goto the next page (max mails/page = 200) and execute the code again
* Repeat from the start until no more duplicate entities are logged anymore
*
* Troubleshooting:
*   - If you get failing authentications in the network tab: try updating the token below
*   - If the "Deleted Items" folder does not exist, change the name below
*/

var url = 'https://example.com/roundcube/';
//Get X-Roundcube-Request token from another request header
var token = 'BP2IKZwXkqmxXOcucCDK71ujILrH87vw';

//Create an array with the messages
//remove the header row
//map the data
var mails = [...rcmail.message_list.list.rows].slice(1).map((mail, idx) => { return { 
	idx: idx, 
	uid: mail.uid, 
	sub: mail.innerText,
	deleted: false
} } );
mails.forEach(m => {
	//Compare on subject (sender, time, subject)
	var dups = mails.filter(m2 => m.sub === m2.sub && m2.deleted === false);
	if(dups.length > 1) {
		console.log(m.uid, m.sub, {_uid: `${m.uid}`});
	    	//Set deleted to true so one message remains
		m.deleted = true;
		//Move the mail to "Deleted Items"
		fetch(url + '?_task=mail&_action=move', {
			method: 'post',
			mode: 'same-origin',
			headers: {
      			"Content-type": "application/x-www-form-urlencoded; charset=UTF-8",
      			"X-Roundcube-Request": token
    		},
    		body: `_target_mbox=Deleted+Items&_uid=${m.uid}&_mbox=Sent+Items&_remote=1&_unlock=loading1580853415186`
		});
	}
});