feat: initial release

web/static/css/style.css

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+:root {
+    --bg: #0d1117;
+    --fg: #adbac7;
+    --accent: #4493f8;
+    --border: #30363d;
+    --success: #3fb950;
+    --header-white: #f0f6fc;
+}
+
+body {
+    background: var(--bg);
+    color: var(--fg);
+    font-family: -apple-system, system-ui, sans-serif;
+    margin: 0;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    min-height: 100vh;
+}
+
+.container {
+    width: 100%;
+    max-width: 600px;
+    padding: 20px;
+}
+
+.header {
+    margin-bottom: 30px;
+    border-left: 3px solid var(--accent);
+    padding-left: 16px;
+}
+
+.upload-area {
+    border: 2px dashed var(--border);
+    border-radius: 12px;
+    padding: 60px 20px;
+    text-align: center;
+    cursor: pointer;
+    background: #161b22;
+    transition: 0.2s;
+}
+
+.upload-area:hover,
+.upload-area.dragover {
+    border-color: var(--accent);
+    background: #1c2128;
+}
+
+.progress-bar {
+    height: 6px;
+    background: var(--border);
+    border-radius: 10px;
+    margin: 25px 0;
+    overflow: hidden;
+    display: none;
+}
+
+.progress-fill {
+    height: 100%;
+    background: var(--accent);
+    width: 0%;
+    transition: width 0.3s;
+}
+
+.copy-box {
+    display: flex;
+    margin-top: 20px;
+    gap: 8px;
+}
+
+input[type="text"] {
+    flex: 1;
+    background: #0d1117;
+    border: 1px solid var(--border);
+    color: var(--success);
+    padding: 12px;
+    border-radius: 6px;
+    font-family: monospace;
+    outline: none;
+}
+
+button {
+    background: var(--accent);
+    color: white;
+    border: none;
+    padding: 10px 20px;
+    border-radius: 6px;
+    cursor: pointer;
+    font-weight: 600;
+}
+
+.reset-btn {
+    background: transparent;
+    color: var(--fg);
+    text-decoration: underline;
+    margin-top: 20px;
+    border: none;
+    cursor: pointer;
+    opacity: 0.7;
+}
+
+.dim {
+    color: #768390;
+    font-size: 13px;
+}
+
+.error-text {
+    color: #f85149;
+    margin-bottom: 10px;
+}

web/static/js/app.js

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+const $ = (id) => document.getElementById(id);
+const dropZone = $("drop-zone");
+const fileInput = $("file-input");
+
+if (dropZone) {
+  dropZone.onclick = () => {
+    if ($("idle-state").style.display !== "none") fileInput.click();
+  };
+
+  fileInput.onchange = () => {
+    if (fileInput.files[0]) handleUpload(fileInput.files[0]);
+  };
+
+  ["dragenter", "dragover"].forEach((n) =>
+    dropZone.addEventListener(n, (e) => {
+      e.preventDefault();
+      dropZone.classList.add("dragover");
+    }),
+  );
+
+  ["dragleave", "drop"].forEach((n) =>
+    dropZone.addEventListener(n, (e) => {
+      e.preventDefault();
+      dropZone.classList.remove("dragover");
+    }),
+  );
+
+  dropZone.addEventListener("drop", (e) => {
+    e.preventDefault();
+    if (e.dataTransfer.files.length) handleUpload(e.dataTransfer.files[0]);
+  });
+}
+
+async function handleUpload(file) {
+  $("idle-state").style.display = "none";
+  $("busy-state").style.display = "block";
+
+  const uploadID = Math.random().toString(36).substring(2, 15);
+  const chunkSize = 1024 * 1024 * 8;
+  const total = Math.ceil(file.size / chunkSize);
+
+  try {
+    for (let i = 0; i < total; i++) {
+      const fd = new FormData();
+      fd.append("upload_id", uploadID);
+      fd.append("index", i);
+      fd.append("chunk", file.slice(i * chunkSize, (i + 1) * chunkSize));
+      const res = await fetch("/upload/chunk", { method: "POST", body: fd });
+      if (!res.ok) throw new Error();
+      $("p-fill").style.width = ((i + 1) / total) * 100 + "%";
+    }
+
+    const finalFd = new FormData();
+    finalFd.append("upload_id", uploadID);
+    finalFd.append("filename", file.name);
+    finalFd.append("total", total);
+
+    const res = await fetch("/upload/finish", {
+      method: "POST",
+      body: finalFd,
+      headers: { "X-Requested-With": "XMLHttpRequest" },
+    });
+
+    $("busy-state").style.display = "none";
+    $("result-state").innerHTML = await res.text();
+  } catch (e) {
+    $("busy-state").style.display = "none";
+    $("result-state").innerHTML = `<div class="error-text">Upload Failed</div><button class="reset-btn" onclick="resetUI()">Try again</button>`;
+  }
+}
+
+function copyToClipboard(btn) {
+  const input = $("share-url");
+  input.select();
+  const fullUrl = window.location.protocol + "//" + input.value;
+  navigator.clipboard.writeText(fullUrl);
+  btn.innerText = "Copied!";
+  setTimeout(() => (btn.innerText = "Copy"), 2000);
+}
+
+function resetUI() {
+  location.reload();
+}

web/templates/base.html

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+{{define "base"}}
+<!doctype html>
+<html lang="en">
+    <head>
+        <meta charset="UTF-8" />
+        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+        <title>safebin</title>
+        <link rel="stylesheet" href="/static/css/style.css" />
+    </head>
+    <body>
+        <div class="container">
+            <header class="header">
+                <h2 style="margin: 0; color: var(--header-white)">safebin</h2>
+                <div class="dim">Encrypted Temporary File Storage</div>
+            </header>
+
+            {{template "content" .}}
+
+            <section style="margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--border)">
+                <div class="dim" style="text-transform: uppercase; font-size: 11px; font-weight: 700; letter-spacing: 1px">CLI Usage</div>
+                <pre style="background: #161b22; padding: 16px; border-radius: 8px; font-size: 13px; overflow-x: auto; border: 1px solid var(--border)">
+curl -F file=@yourfile {{.Host}}</pre
+                >
+            </section>
+        </div>
+
+        <input type="file" id="file-input" style="display: none" />
+        <script src="/static/js/app.js"></script>
+    </body>
+</html>
+{{end}}

web/templates/index.html

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+{{define "content"}}
+<main class="upload-area" id="drop-zone">
+    <div id="idle-state">
+        <div style="font-size: 32px; color: var(--accent)">↑</div>
+        <div style="font-weight: 500; color: var(--header-white)">Click or drag to upload</div>
+        <div class="dim">Max size: {{.MaxMB}}MB</div>
+    </div>
+
+    <div id="busy-state" style="display: none">
+        <div id="status-msg" style="font-weight: 500">Uploading...</div>
+        <div class="progress-bar" id="p-bar-container" style="display: block">
+            <div class="progress-fill" id="p-fill"></div>
+        </div>
+    </div>
+
+    <div id="result-state"></div>
+</main>
+{{end}}