docs: add architecture documentation and slides

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2026-07-14 11:04:49 +03:30
parent e99060de41
commit c54f6edc1e
23 changed files with 765 additions and 0 deletions

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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>Gapido Auth Challenge</title>
<link rel="stylesheet" href="styles.css" />
</head>
<body>
<header class="topbar">
<span>Gapido Backend Challenge</span>
<div class="controls">
<button id="theme-toggle" type="button">Toggle theme</button>
<button id="prev" type="button">Prev</button>
<button id="next" type="button">Next</button>
</div>
</header>
<main class="deck">
<section class="slide active">
<p class="eyebrow">The problem</p>
<h1>Secure OTP auth for microservices</h1>
<p class="lede">Python • gRPC • MongoDB • Redis • RabbitMQ • Docker</p>
</section>
<section class="slide split">
<div>
<p class="eyebrow">Constraints</p>
<h2>What had to be proven</h2>
</div>
<ul class="tiles">
<li>gRPC auth boundary</li>
<li>secure OTP</li>
<li>refresh rotation</li>
<li>role-based access</li>
<li>async SMS delivery</li>
<li>production deployment path</li>
</ul>
</section>
<section class="slide diagram">
<p class="eyebrow">Solution shape</p>
<h2>Service architecture</h2>
<img src="../assets/diagrams/service_architecture.png" alt="Service architecture" />
</section>
<section class="slide diagram">
<p class="eyebrow">Code organization</p>
<h2>Clean architecture layers</h2>
<img src="../assets/diagrams/clean_architecture.png" alt="Clean architecture layers" />
</section>
<section class="slide diagram">
<p class="eyebrow">Auth flow</p>
<h2>OTP without storing plaintext codes</h2>
<img src="../assets/diagrams/otp_login_flow.png" alt="OTP login flow" />
</section>
<section class="slide diagram">
<p class="eyebrow">Token safety</p>
<h2>Refresh token rotation</h2>
<img src="../assets/diagrams/refresh_rotation_flow.png" alt="Refresh token rotation" />
</section>
<section class="slide diagram">
<p class="eyebrow">Extensibility</p>
<h2>Selectable SMS providers</h2>
<img src="../assets/diagrams/sms_provider_strategy.png" alt="SMS provider strategy" />
</section>
<section class="slide diagram">
<p class="eyebrow">Deployment</p>
<h2>Only Caddy is public</h2>
<img src="../assets/diagrams/production_deployment.png" alt="Production deployment" />
</section>
<section class="slide split">
<div>
<p class="eyebrow">Reliability</p>
<h2>What makes it reviewable</h2>
</div>
<ul class="tiles">
<li>Mocked SMS providers</li>
<li>gRPC tests</li>
<li>RBAC coverage</li>
<li>Compose validation</li>
<li>Health checks</li>
<li>Postman guide</li>
</ul>
</section>
<section class="slide">
<p class="eyebrow">Outcome</p>
<h2>Interview-ready microservice demo</h2>
<p class="lede">A focused auth service with clean boundaries, secure OTP, async messaging, provider strategy, and production deployment posture.</p>
</section>
</main>
<footer class="progress"><span id="counter">1 / 10</span></footer>
<script src="slides.js"></script>
</body>
</html>

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const slides = [...document.querySelectorAll(".slide")];
const counter = document.querySelector("#counter");
const root = document.documentElement;
let index = 0;
function render() {
slides.forEach((slide, current) => slide.classList.toggle("active", current === index));
counter.textContent = `${index + 1} / ${slides.length}`;
}
function move(delta) {
index = (index + delta + slides.length) % slides.length;
render();
}
document.querySelector("#next").addEventListener("click", () => move(1));
document.querySelector("#prev").addEventListener("click", () => move(-1));
document.querySelector("#theme-toggle").addEventListener("click", () => {
root.classList.toggle("light");
});
document.addEventListener("keydown", (event) => {
if (event.key === "ArrowRight" || event.key === " ") move(1);
if (event.key === "ArrowLeft") move(-1);
});
render();

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:root {
color-scheme: dark;
--bg: #070b14;
--panel: #101827;
--text: #e6edf7;
--muted: #93a4bc;
--accent: #34d399;
--border: #223149;
}
:root.light {
color-scheme: light;
--bg: #f7fafc;
--panel: #ffffff;
--text: #172033;
--muted: #5f7088;
--accent: #0f766e;
--border: #d8e1ee;
}
* {
box-sizing: border-box;
}
body {
margin: 0;
min-height: 100vh;
font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
background: var(--bg);
color: var(--text);
}
.topbar,
.progress {
position: fixed;
left: 0;
right: 0;
z-index: 10;
display: flex;
justify-content: space-between;
align-items: center;
padding: 16px 24px;
color: var(--muted);
}
.topbar {
top: 0;
}
.progress {
bottom: 0;
}
.controls {
display: flex;
gap: 8px;
}
button {
border: 1px solid var(--border);
border-radius: 8px;
background: var(--panel);
color: var(--text);
padding: 8px 12px;
font-weight: 700;
cursor: pointer;
}
.deck {
min-height: 100vh;
display: grid;
place-items: center;
padding: 72px 5vw;
}
.slide {
display: none;
width: min(1120px, 100%);
min-height: 620px;
padding: 48px;
border: 1px solid var(--border);
border-radius: 12px;
background: var(--panel);
box-shadow: 0 24px 80px rgb(0 0 0 / 24%);
}
.slide.active {
display: grid;
align-content: center;
gap: 24px;
}
.split.active {
grid-template-columns: 0.9fr 1.1fr;
align-items: center;
}
.diagram.active {
align-content: start;
}
.eyebrow {
margin: 0;
color: var(--accent);
font-size: 14px;
font-weight: 800;
text-transform: uppercase;
}
h1,
h2 {
margin: 0;
letter-spacing: 0;
}
h1 {
max-width: 900px;
font-size: clamp(54px, 7vw, 92px);
line-height: 0.95;
}
h2 {
font-size: clamp(36px, 5vw, 62px);
line-height: 1;
}
.lede {
max-width: 820px;
margin: 0;
color: var(--muted);
font-size: 24px;
line-height: 1.45;
}
.tiles {
list-style: none;
margin: 0;
padding: 0;
display: grid;
grid-template-columns: repeat(2, minmax(0, 1fr));
gap: 14px;
}
.tiles li {
min-height: 96px;
display: grid;
place-items: center;
padding: 18px;
border: 1px solid var(--border);
border-radius: 8px;
color: var(--text);
background: color-mix(in srgb, var(--panel), var(--accent) 6%);
font-size: 20px;
font-weight: 800;
text-align: center;
}
img {
width: 100%;
max-height: 460px;
object-fit: contain;
border-radius: 8px;
background: #ffffff;
padding: 12px;
}
@media (max-width: 820px) {
.slide {
min-height: 620px;
padding: 28px;
}
.split.active,
.tiles {
grid-template-columns: 1fr;
}
}