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migrate.js
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migrate.js
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// Mastodon migration script
// https://docs.joinmastodon.org/api
// NOTICE: You will need to customize this script to fit the instance it will be migrating to
// Search this file for "REQUIRED:" to find the lines that need to be changed from their defaults and information on how to change them
// Settings, instance
const timeout = 60;
const instance = "mastodon.social"; // REQUIRED: You must specify the name of the instance you are migrating to
const token = ""; // REQUIRED: Set this to the access token of the application configured in your account
// Settings, timer
const interval_seconds = 1; // seconds (lag added)
const interval_probability = 0.25; // execution probability per attempt
const interval_bias = 0.5; // 0 = always reblog, 1 = always favourite
// Settings, files
const filename_path = "./mastodon.social/"; // REQUIRED: Set this to the subdirectory of the instance containing the archive
const filename_favourites = filename_path + "likes.json";
const filename_favourites_history = filename_path + "history_likes.json";
const filename_reblogs = filename_path + "outbox.json";
const filename_reblogs_history = filename_path + "history_outbox.json";
const mixed_check = true; // if true, reblog calls are checked in favourite scans, and vice versa
// Require dependency modules
const fs = require("fs");
const mastodon = require("mastodon");
var statuses_reblogs = statuses_favourites = []; // contains status objects
var history_reblogs = history_favourites = []; // contains status URL's
// Mastodon server
var server = new mastodon({
access_token: token,
timeout_ms: timeout * 1000,
api_url: "https://" + instance + "/api/v1/",
});
// Message logging
function message(text) {
const date = new Date();
console.log(date.toUTCString() + ": " + text);
}
// Data posting
function data_post(url, do_reblog, do_favourite) {
try {
server.get("search", {q: url}).then(function(response) {
// Get the local ID of the remote post
const id = response["data"] && response["data"]["statuses"] && response["data"]["statuses"][0] && response["data"]["statuses"][0]["id"];
if(typeof id != "string")
return;
if(do_reblog) {
try {
server.post("statuses/" + id + "/reblog").then(function(response) {
message("Reblogged status: " + id);
});
} catch(error) {
message("Error: Cound not reblog status " + id + " on the local instance, skipping this status.");
}
}
if(do_favourite) {
try {
server.post("statuses/" + id + "/favourite").then(function(response) {
message("Favourited status: " + id);
});
} catch(error) {
message("Error: Cound not favourite status " + id + " on the local instance, skipping this status.");
}
}
});
} catch(error) {
message("Error: Cound not fetch status url " + url + " from its remote instance, skipping this status.");
}
}
// Data fetching
function data_fetch(scan_reblog) {
// If scan_reblog is true, reblogs are the primary category and favourites are secondary, otherwise the other way around
// Entries in the primary category are scanned for statuses, while their actions are guaranteed to be preformed
// Entries in the secondary category are scanned alternatively, to also preform their actions if they exist on that category's list
const primary_statuses = scan_reblog ? statuses_reblogs : statuses_favourites;
const primary_history = scan_reblog ? history_reblogs : history_favourites;
const secondary_statuses = scan_reblog ? statuses_favourites : statuses_reblogs;
const secondary_history = scan_reblog ? history_favourites : history_reblogs;
var do_secondary = false;
// Scan the primary category
for(var primary_item in primary_statuses) {
var primary_url = primary_statuses[primary_item];
if(typeof primary_url == "object")
primary_url = primary_url["object"]; // URL is stored in the object entry (reblogs)
if(typeof primary_url != "string")
continue; // Not a valid item
if(primary_url.substring(0, 4) != "http")
continue; // Not a valid status URL
if(primary_history.indexOf(primary_url) >= 0)
continue; // Exists in the history
if(mixed_check) {
// Scan the secondary category
for(var secondary_item in secondary_statuses) {
var secondary_url = secondary_statuses[secondary_item];
if(typeof secondary_url == "object")
secondary_url = secondary_url["object"]; // URL is stored in the object entry (reblogs)
if(typeof secondary_url != "string")
continue; // Not a valid item
if(secondary_history.indexOf(secondary_url) >= 0)
continue; // Exists in the history
if(secondary_url == primary_url) {
do_secondary = true;
break;
}
}
}
const do_reblog = scan_reblog ? true : do_secondary;
const do_favourite = !scan_reblog ? true : do_secondary;
if(do_reblog)
add_history(primary_url, true);
if(do_favourite)
add_history(primary_url, false);
data_post(primary_url, do_reblog, do_favourite);
break;
}
}
// Add to history
function add_history(item, for_reblog) {
if(for_reblog)
history_reblogs.push(item);
else
history_favourites.push(item);
const history_file = for_reblog ? filename_reblogs_history : filename_favourites_history;
const history_items = for_reblog ? history_reblogs : history_favourites;
// Write items to the history file
fs.writeFile(history_file, JSON.stringify(history_items), "utf8", function(error) {
if(error != null)
message("Error: History table could not be written to its file. Make sure the file " + history_file + " exists.");
});
}
// Initialization, history data
function initialize_data_history() {
// Reblogs: Read the items from the history file
fs.readFile(filename_reblogs_history, function(error_reblogs, data_reblogs) {
if(error_reblogs != null) {
message("Error: Reblogs table could not be read from its file. Make sure the file " + filename_reblogs_history + " exists.");
} else {
try {
// Reblogs: Update the history object
history_reblogs = JSON.parse(data_reblogs);
if(typeof history_reblogs != "object")
return;
// Favourites: Read the items from the history file
fs.readFile(filename_favourites_history, function(error_favourites, data_favourites) {
if(error_favourites != null) {
message("Error: Favourites table could not be read from its file. Make sure the file " + filename_favourites_history + " exists.");
} else {
try {
// Favourites: Update the history object
history_favourites = JSON.parse(data_favourites);
if(typeof history_favourites != "object")
return;
// Start the timer
{
message("Migration script initialized for instance " + instance + ".");
interval_set();
}
} catch(error) {
message("Error: Favourites table could not be parsed to JSON. Make sure the file " + filename_favourites_history + " contains an array (\"[]\").");
}
}
});
} catch(error) {
message("Error: Reblogs table could not be parsed to JSON. Make sure the file " + filename_reblogs_history + " contains an array (\"[]\").");
}
}
});
}
// Initialization, data
function initialize_data() {
// Reblogs: Read the items from the data file
fs.readFile(filename_reblogs, function(error_reblogs, data_reblogs) {
if(error_reblogs != null) {
message("Error: Reblogs table could not be read from its file. Make sure the file " + filename_reblogs + " exists.");
} else {
try {
// Reblogs: Update the statuses object
const json_reblogs = JSON.parse(data_reblogs);
if(typeof json_reblogs["orderedItems"] == "object")
statuses_reblogs = json_reblogs["orderedItems"];
else
return;
// Favourites: Read the items from the data file
fs.readFile(filename_favourites, function(error_favourites, data_favourites) {
if(error_favourites != null) {
message("Error: Favourites table could not be read from its file. Make sure the file " + filename_favourites + " exists.");
} else {
try {
// Favourites: Update the statuses object
const json_favourites = JSON.parse(data_favourites);
if(typeof json_favourites["orderedItems"] == "object")
statuses_favourites = json_favourites["orderedItems"];
else
return;
// Initialize the history
{
initialize_data_history();
}
} catch(error) {
message("Error: Favourites table could not be parsed to JSON. Make sure the file " + filename_favourites + " is a valid Mastodon favourites file.");
}
}
});
} catch(error) {
message("Error: Reblogs table could not be parsed to JSON. Make sure the file " + filename_reblogs + " is a valid Mastodon reblogs file.");
}
}
});
}
// Interval object
var timer = null;
// Interval function
function interval_func() {
if(Math.random() > interval_probability)
return;
if(Math.random() < interval_bias)
data_fetch(false);
else
data_fetch(true);
}
// Interval clear
function interval_clear() {
clearInterval(timer);
timer = null;
}
// Interval set
function interval_set() {
clearInterval(timer);
timer = setInterval(interval_func, interval_seconds * 1000);
}
// Initialize
initialize_data();