/* Forgehouse address move. Runs before the app on every page. Old address: hand saved browser data to the new address, then redirect. New address: on the first visit, check the old address once for saved data. Data never leaves the browser. Nothing is deleted from the old address. */ (function () { var MAP = { // Older addresses first; the last entry per new address is the one checked // for saved data (the vercel.app address the app most recently lived at). "forge-apps-hub-jam4-apparel.vercel.app": "myforgehouse.com", "forge-tonesmith-jam4-apparel.vercel.app": "dotsmith.myforgehouse.com", "forge-tumblerforge-jam4-apparel.vercel.app": "spinforge.myforgehouse.com", "forge-patchforge-jam4-apparel.vercel.app": "hideforge.myforgehouse.com", "forge-vectorforge-jam4-apparel.vercel.app": "linesmith.myforgehouse.com", "forge-nestsmith-jam4-apparel.vercel.app": "nestforge.myforgehouse.com", "forge-mappsmith-jam4-apparel.vercel.app": "mapsmith.myforgehouse.com", "forge-settings-jam4-apparel.vercel.app": "anvil.myforgehouse.com", "forgehouse-jam4-apparel.vercel.app": "myforgehouse.com", "forge-dotsmith-jam4-apparel.vercel.app": "dotsmith.myforgehouse.com", "forge-spinforge-jam4-apparel.vercel.app": "spinforge.myforgehouse.com", "forge-hideforge-jam4-apparel.vercel.app": "hideforge.myforgehouse.com", "forge-linesmith-jam4-apparel.vercel.app": "linesmith.myforgehouse.com", "forge-nestforge-jam4-apparel.vercel.app": "nestforge.myforgehouse.com", "forge-mapsmith-jam4-apparel.vercel.app": "mapsmith.myforgehouse.com", "forge-anvil-jam4-apparel.vercel.app": "anvil.myforgehouse.com", "forge-linkforge-jam4-apparel.vercel.app": "linkforge.myforgehouse.com" }; var PAGE = "/forge-migrate.html"; var MOVED = "__fh_moved"; // old address: data handed over var CHECKED = "__fh_checked"; // new address: old address already checked var KEY = "__fh_import="; var SMALL = 1500000; // largest payload sent in the URL var host = location.hostname; var OLD = {}; for (var o in MAP) OLD[MAP[o]] = o; var onPage = location.pathname === PAGE; var qs = new URLSearchParams(location.search); function ls(k, v) { try { if (v === undefined) return localStorage.getItem(k); localStorage.setItem(k, v); return v; } catch (e) { return null; } } function storageWorks() { ls("__fh_t", "1"); return ls("__fh_t") === "1"; } function here() { return location.pathname + location.search + location.hash; } function safePath(p) { return p && p.charAt(0) === "/" && p.charAt(1) !== "/" ? p : "/"; } var hidden = false; function hide() { if (onPage || hidden) return; hidden = true; document.documentElement.style.visibility = "hidden"; setTimeout(show, 6000); } function show() { hidden = false; document.documentElement.style.visibility = ""; } /* ---------- encoding (JSON with tags for binary values) ---------- */ function toB64(bytes) { var s = "", c = 0x8000; for (var i = 0; i < bytes.length; i += c) s += String.fromCharCode.apply(null, bytes.subarray(i, i + c)); return btoa(s); } function fromB64(s) { var b = atob(s), u = new Uint8Array(b.length); for (var i = 0; i < b.length; i++) u[i] = b.charCodeAt(i); return u; } function enc(v) { if (v === null || typeof v !== "object") return Promise.resolve(v); if (v instanceof Date) return Promise.resolve({ __fh: "date", v: v.getTime() }); if (typeof Blob !== "undefined" && v instanceof Blob) { return v.arrayBuffer().then(function (ab) { return { __fh: "blob", type: v.type, name: v.name || null, file: typeof File !== "undefined" && v instanceof File, lm: v.lastModified || 0, d: toB64(new Uint8Array(ab)) }; }); } if (v instanceof ArrayBuffer) return Promise.resolve({ __fh: "ab", d: toB64(new Uint8Array(v)) }); if (ArrayBuffer.isView(v)) { return Promise.resolve({ __fh: "view", c: v.constructor.name, d: toB64(new Uint8Array(v.buffer, v.byteOffset, v.byteLength)) }); } if (v instanceof Map) return enc(Array.from(v.entries())).then(function (e) { return { __fh: "map", e: e }; }); if (v instanceof Set) return enc(Array.from(v.values())).then(function (e) { return { __fh: "set", e: e }; }); if (Array.isArray(v)) return Promise.all(v.map(enc)); var keys = Object.keys(v); return Promise.all(keys.map(function (k) { return enc(v[k]); })).then(function (vals) { var out = {}; keys.forEach(function (k, i) { out[k] = vals[i]; }); return out; }); } function dec(v) { if (v === null || typeof v !== "object") return v; if (Array.isArray(v)) return v.map(dec); if (v.__fh === "date") return new Date(v.v); if (v.__fh === "blob") { var bytes = fromB64(v.d); return v.file ? new File([bytes], v.name || "file", { type: v.type, lastModified: v.lm }) : new Blob([bytes], { type: v.type }); } if (v.__fh === "ab") return fromB64(v.d).buffer; if (v.__fh === "view") { var u = fromB64(v.d), C = self[v.c]; if (v.c === "DataView") return new DataView(u.buffer); return C && C.BYTES_PER_ELEMENT ? new C(u.buffer) : u; } if (v.__fh === "map") return new Map(dec(v.e)); if (v.__fh === "set") return new Set(dec(v.e)); var out = {}; for (var k in v) out[k] = dec(v[k]); return out; } function pipe(bytes, stream) { return new Response(new Blob([bytes]).stream().pipeThrough(stream)).arrayBuffer().then(function (b) { return new Uint8Array(b); }); } function pack(p) { return enc(p).then(function (e) { var bytes = new TextEncoder().encode(JSON.stringify(e)); if (typeof CompressionStream === "undefined") return "r" + toB64(bytes); return pipe(bytes, new CompressionStream("gzip")).then(function (z) { return "z" + toB64(z); }); }).then(function (s) { return s.replace(/\+/g, "-").replace(/\//g, "_").replace(/=+$/, ""); }); } function unpack(s) { var b = s.slice(1).replace(/-/g, "+").replace(/_/g, "/"); var bytes = fromB64(b); var p = s.charAt(0) === "z" ? pipe(bytes, new DecompressionStream("gzip")) : Promise.resolve(bytes); return p.then(function (u) { return dec(JSON.parse(new TextDecoder().decode(u))); }); } /* ---------- reading and writing browser storage ---------- */ function req(r) { return new Promise(function (res, rej) { r.onsuccess = function () { res(r.result); }; r.onerror = function () { rej(r.error); }; }); } function dumpDb(name) { return new Promise(function (res) { var created = false; var r = indexedDB.open(name); r.onupgradeneeded = function () { created = true; }; r.onerror = function () { res(null); }; r.onsuccess = function () { var db = r.result; var names = Array.prototype.slice.call(db.objectStoreNames); var out = { name: name, version: db.version, stores: [], n: 0 }; if (created || !names.length) { db.close(); if (created) indexedDB.deleteDatabase(name); res(created ? null : out); return; } var tx = db.transaction(names, "readonly"); names.forEach(function (sn) { var st = tx.objectStore(sn); var s = { name: sn, keyPath: st.keyPath, autoIncrement: st.autoIncrement, rows: [], indexes: Array.prototype.slice.call(st.indexNames).map(function (i) { var x = st.index(i); return { name: i, keyPath: x.keyPath, unique: x.unique, multiEntry: x.multiEntry }; }) }; out.stores.push(s); var c = st.openCursor(); c.onsuccess = function () { var cu = c.result; if (!cu) return; s.rows.push([st.keyPath === null ? cu.key : null, cu.value]); out.n++; cu.continue(); }; }); tx.oncomplete = function () { db.close(); res(out); }; tx.onerror = tx.onabort = function () { db.close(); res(null); }; }; }); } function collect() { var p = { v: 1, ls: {}, idb: [], count: 0 }; try { for (var i = 0; i < localStorage.length; i++) { var k = localStorage.key(i); if (!k || k.indexOf("__fh") === 0) continue; p.ls[k] = localStorage.getItem(k); p.count++; } } catch (e) {} if (!self.indexedDB || !indexedDB.databases) return Promise.resolve(p); return indexedDB.databases().then(function (list) { return list.reduce(function (chain, d) { return chain.then(function () { return dumpDb(d.name).then(function (db) { if (db && db.n) { p.idb.push(db); p.count += db.n; } }); }); }, Promise.resolve()); }).then(function () { return p; }, function () { return p; }); } function restoreDb(d) { return new Promise(function (res, rej) { var fresh = false; var probe = indexedDB.open(d.name); probe.onerror = function () { rej(probe.error); }; probe.onupgradeneeded = function () { fresh = true; }; probe.onsuccess = function () { var have = probe.result.version; probe.result.close(); var go = function () { // Never raise the version past what the app itself uses. var r = fresh || have < d.version ? indexedDB.open(d.name, d.version) : indexedDB.open(d.name); r.onupgradeneeded = function () { var db = r.result, tx = r.transaction; d.stores.forEach(function (s) { var st = db.objectStoreNames.contains(s.name) ? tx.objectStore(s.name) : db.createObjectStore(s.name, { keyPath: s.keyPath, autoIncrement: s.autoIncrement }); s.indexes.forEach(function (ix) { if (!st.indexNames.contains(ix.name)) st.createIndex(ix.name, ix.keyPath, { unique: ix.unique, multiEntry: ix.multiEntry }); }); }); }; r.onerror = function () { rej(r.error); }; r.onsuccess = function () { write(r.result, d, res, rej); }; }; if (fresh) { var del = indexedDB.deleteDatabase(d.name); del.onsuccess = del.onerror = go; } else go(); }; }); } function write(db, d, res, rej) { var names = d.stores.map(function (s) { return s.name; }).filter(function (n) { return db.objectStoreNames.contains(n); }); if (!names.length) { db.close(); res(); return; } var tx = db.transaction(names, "readwrite"); d.stores.forEach(function (s) { if (names.indexOf(s.name) < 0) return; var st = tx.objectStore(s.name); s.rows.forEach(function (row) { // Keep anything already saved at the new address. var a = row[0] === null ? st.add(row[1]) : st.add(row[1], row[0]); a.onerror = function (e) { e.preventDefault(); e.stopPropagation(); }; }); }); tx.oncomplete = function () { db.close(); res(); }; tx.onabort = function () { db.close(); rej(tx.error); }; } function importAll(p) { for (var k in p.ls) { // Keep anything already saved at the new address. if (ls(k) === null) ls(k, p.ls[k]); } return (p.idb || []).reduce(function (chain, d) { return chain.then(function () { return restoreDb(d); }); }, Promise.resolve()) .then(function () { ls(CHECKED, String(Date.now())); ls("__fh_imported", String(p.count)); }); } /* ---------- the old address ---------- */ function newUrl(nh, path) { return "https://" + nh + safePath(path); } function handoff(nh, to) { if (ls(MOVED)) { location.replace(newUrl(nh, to)); return; } hide(); collect().then(function (p) { if (!p.count) { ls(MOVED, "empty"); location.replace("https://" + nh + PAGE + "?done=1&to=" + encodeURIComponent(safePath(to))); return; } return pack(p).then(function (s) { if (s.length <= SMALL) { ls(MOVED, "url"); location.replace("https://" + nh + PAGE + "?to=" + encodeURIComponent(safePath(to)) + "#" + KEY + s); } else { show(); offer(nh, to, s, p); } }); }).catch(function () { show(); }); } function offer(nh, to, s, p) { var box = document.createElement("div"); box.setAttribute("role", "dialog"); box.setAttribute("aria-label", "Forgehouse moved"); box.style.cssText = "position:fixed;inset:0;z-index:2147483647;display:flex;align-items:center;justify-content:center;background:rgba(7,8,12,.86);font:15px/1.5 system-ui,sans-serif;color:#f5f7fb"; box.innerHTML = '

' + '

This app has a new address

' + '

Your saved work (' + p.count + ' items) is in this browser at the old address. Move it to the new address? A small window opens for a moment.

' + ' ' + 'Not now

'; (document.body || document.documentElement).appendChild(box); var msg = box.querySelector('[data-a="msg"]'); var origin = "https://" + nh; box.querySelector('[data-a="skip"]').onclick = function (e) { e.preventDefault(); // From the move page, carry on to the new address without moving. if (onPage) location.replace(newUrl(nh, to)); else box.remove(); }; box.querySelector('[data-a="move"]').onclick = function () { var w = window.open(origin + PAGE + "?popup=1", "fh_move", "width=420,height=320"); if (!w) { msg.textContent = "The window was blocked. Allow pop-ups for this site and try again."; return; } msg.style.color = "#aab0bd"; msg.textContent = "Moving…"; window.addEventListener("message", function (e) { if (e.origin !== origin || e.source !== w || !e.data) return; if (e.data.fh === "ready") w.postMessage({ fh: "data", s: s }, origin); if (e.data.fh === "done") { ls(MOVED, "popup"); location.replace(newUrl(nh, to)); } if (e.data.fh === "error") { msg.style.color = "#fca5a5"; msg.textContent = "The move failed: " + e.data.m; } }); }; } /* ---------- the new address ---------- */ function receive(oh) { var origin = "https://" + oh; var to = safePath(qs.get("to")); var status = document.getElementById("fh-status"); function say(t) { if (status) status.textContent = t; } function fail(err) { say("Could not move your saved work: " + (err && err.message || err) + ". Your work is still at the old address."); var a = document.getElementById("fh-old"); if (a) { a.href = origin + to + (to.indexOf("?") < 0 ? "?" : "&") + "forge-stay=1"; a.hidden = false; } } if (qs.get("popup") === "1" && window.opener) { window.addEventListener("message", function (e) { if (e.origin !== origin || e.source !== window.opener || !e.data || e.data.fh !== "data") return; say("Moving your saved work…"); unpack(e.data.s).then(importAll).then(function () { window.opener.postMessage({ fh: "done" }, origin); say("Done."); setTimeout(function () { window.close(); }, 300); }, function (err) { window.opener.postMessage({ fh: "error", m: String(err && err.message || err) }, origin); fail(err); }); }); window.opener.postMessage({ fh: "ready" }, origin); return; } if (location.hash.indexOf("#" + KEY) === 0) { var s = location.hash.slice(KEY.length + 1); history.replaceState(null, "", location.pathname + location.search); // Only accept data that came straight from the old address. if (document.referrer.indexOf(origin + "/") !== 0) { fail("it did not come from the old address"); return; } say("Moving your saved work…"); unpack(s).then(importAll).then(function () { location.replace(to); }, fail); return; } if (qs.get("done") === "1") { ls(CHECKED, String(Date.now())); location.replace(to); return; } location.replace(to); } try { if (qs.get("forge-stay") === "1") sessionStorage.setItem("__fh_stay", "1"); var stay = sessionStorage.getItem("__fh_stay") === "1"; if (MAP[host]) { if (stay && !(onPage && qs.get("pull") === "1")) return; handoff(MAP[host], onPage ? qs.get("to") : here()); } else if (OLD[host]) { if (onPage) { receive(OLD[host]); return; } // First visit to the new address: check the old address once. if (!ls(CHECKED) && storageWorks()) { ls(CHECKED, "pending"); hide(); location.replace("https://" + OLD[host] + PAGE + "?pull=1&to=" + encodeURIComponent(here())); } } } catch (e) { show(); } })();

One pass. Every app. Free.