Email Infrastructure for Developers & SaaS platforms.

"; } function argsLine(value) { return Object.keys(value).map(function (key) { return key + " " + String(value[key]); }).join(" · "); } function setStatus(next) { form.setAttribute("data-send-demo-status", next); } function phase() { return form.getAttribute("data-send-demo-phase") || "idle"; } function setPhase(next) { form.setAttribute("data-send-demo-phase", next); sendButton.disabled = next === "sending"; sendButton.textContent = PHASE_LABEL[next]; smtpPane.hidden = next === "idle"; } function stopSmtp() { if (smtpTimer) window.clearTimeout(smtpTimer); smtpTimer = 0; } function lineOk(text) { return /^(235|250|221)(\s|$)/.test(text); } function renderTranscript(lines) { smtpLog.replaceChildren(); lines.forEach(function (line) { var item = document.createElement("li"); item.setAttribute("data-side", line.side); if (line.side === "in" && lineOk(line.text)) item.setAttribute("data-ok", ""); item.textContent = line.text; smtpLog.appendChild(item); }); smtpPane.scrollTop = smtpPane.scrollHeight; } function firstBodyLine(html) { var line = String(html || "").split(/\r?\n/)[0] || ""; if (line.length > 72) return line.slice(0, 72) + "..."; return line; } function buildTranscript(state) { var parsed = parseArgs(state.uniqueArgs); var lines = [ {side: "in", text: "220 smtp.postshiba.com ESMTP"}, {side: "out", text: "EHLO local"}, {side: "in", text: "250-STARTTLS"}, {side: "in", text: "250 AUTH PLAIN"}, {side: "out", text: "STARTTLS"}, {side: "in", text: "220 Ready to start TLS"}, {side: "out", text: "EHLO local"}, {side: "in", text: "250 AUTH PLAIN"}, {side: "out", text: "AUTH PLAIN "}, {side: "in", text: "235 2.0.0 Authenticated"}, {side: "out", text: "MAIL FROM:<" + state.from + ">"}, {side: "in", text: "250 2.1.0 OK"}, {side: "out", text: "RCPT TO:<" + state.to + ">"}, {side: "in", text: "250 2.1.5 OK"}, {side: "out", text: "DATA"}, {side: "in", text: "354 End data with ."}, {side: "out", text: "From: " + state.from}, {side: "out", text: "To: " + state.to}, {side: "out", text: "Subject: " + state.subject} ]; if (parsed.ok) { lines.push({side: "out", text: "X-Capsule-Unique-Args: " + JSON.stringify(parsed.value)}); } lines.push({side: "out", text: firstBodyLine(state.html)}); lines.push( {side: "out", text: "."}, {side: "in", text: "250 2.0.0 Queued as capsule-44"}, {side: "out", text: "QUIT"}, {side: "in", text: "221 2.0.0 Bye"} ); return lines; } function reducedMotion() { return window.matchMedia && window.matchMedia("(prefers-reduced-motion: reduce)").matches; } function finishSmtp() { setPhase("sent"); setStatus("queued"); smtpTimer = window.setTimeout(function () { smtpTimer = 0; if (phase() !== "sent") return; setPhase("idle"); setStatus("delivered"); }, 900); } function revealSmtp(count) { renderTranscript(smtpLines.slice(0, count)); if (count >= smtpLines.length) { finishSmtp(); return; } smtpTimer = window.setTimeout(function () { revealSmtp(count + 1); }, 70); } function startSmtp() { if (phase() === "sending") return; stopSmtp(); smtpLines = buildTranscript(read()); setPhase("sending"); setStatus("draft"); if (reducedMotion()) { renderTranscript(smtpLines); finishSmtp(); return; } revealSmtp(1); } function setView(view) { form.setAttribute("data-send-demo-view", view); codePane.hidden = view !== "code"; previewPane.hidden = view !== "preview"; viewButtons.forEach(function (button) { button.setAttribute("aria-selected", button.getAttribute("data-send-demo-view-btn") === view ? "true" : "false"); }); } function paint() { var state = read(); var parsed = parseArgs(state.uniqueArgs); var nextHtml = previewDocument(state.html); previewFrom.textContent = state.from; previewTo.textContent = state.to; previewSubject.textContent = state.subject; if (lastHtml !== nextHtml) { lastHtml = nextHtml; preview.srcdoc = nextHtml; } argsStatus.textContent = parsed.ok ? "Back on webhooks" : "Invalid JSON"; argsStatus.classList.toggle("is-invalid", !parsed.ok); previewArgs.hidden = !parsed.ok || !Object.keys(parsed.value).length; previewArgs.textContent = parsed.ok ? argsLine(parsed.value) : ""; statusArgs.textContent = parsed.ok && Object.keys(parsed.value).length ? argsLine(parsed.value) : "no unique args"; } function schedule() { if (frame) return; frame = requestAnimationFrame(function () { frame = 0; paint(); }); } function watchValue(textarea) { var descriptor = Object.getOwnPropertyDescriptor(HTMLTextAreaElement.prototype, "value"); Object.defineProperty(textarea, "value", { configurable: true, get: function () { return descriptor.get.call(this); }, set: function (next) { descriptor.set.call(this, next); schedule(); } }); } function takeOver() { manual = true; } form.addEventListener("submit", function (event) { event.preventDefault(); }); form.addEventListener("pointerdown", takeOver); form.addEventListener("focusin", takeOver); form.addEventListener("input", schedule); form.addEventListener("keyup", schedule); form.addEventListener("paste", schedule); viewButtons.forEach(function (button) { button.addEventListener("click", function () { setView(button.getAttribute("data-send-demo-view-btn")); }); }); sendButton.addEventListener("click", startSmtp); new MutationObserver(function () { if (manual || phase() !== "idle") return; var step = story[Number(form.getAttribute("data-step"))] || story[story.length - 1]; setView(step[0]); setStatus(step[1]); }).observe(form, {attributes: true, attributeFilter: ["data-step"]}); form.querySelectorAll("[data-diffs-root]").forEach(function (node) { new MutationObserver(schedule).observe(node, {subtree: true, characterData: true, childList: true}); }); [htmlInput, argsInput].forEach(watchValue); setView(read().view); paint(); })();