refacto: vide-coding to get a terminal look

This commit is contained in:
Gauvain B
2026-04-21 11:49:33 +02:00
parent 4a98c30f09
commit e088991b5d
10 changed files with 1231 additions and 130 deletions

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# About Me
Hello — I'm **Gauvain Boiché**, a computer science student and developer based in France.
I build things at the intersection of systems programming, web technology, and good design. This terminal is itself a small project: a static portfolio that navigates like a Unix filesystem.
---
## Background
I started programming by taking apart old software and curiosity about how things work at a low level. That thread has run through everything since — from writing bare-metal code to designing distributed systems to crafting interfaces that feel just right.
## Education
- **Master's in Computer Science** — in progress
- Coursework: algorithms & complexity, operating systems, distributed computing, machine learning fundamentals
- Strong academic record with particular interest in systems and compilers
## What Drives Me
> The best technology disappears. You stop thinking about the tool and start thinking about the problem.
I care deeply about **correctness**, **performance**, and **clarity** — in code, in interfaces, and in communication. I prefer to understand things from first principles rather than cargo-cult patterns.
---
## Outside the Terminal
When I'm not at a keyboard, I'm probably reading about computing history, tinkering with vintage hardware, or trying to convince someone that Vim is not that complicated.
---
*Navigate with ↑↓ and ENTER — press Q or ESC to go back.*

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# Contact
I'm open to collaborations, internship opportunities, and interesting conversations about technology.
---
## How to Reach Me
**Email**
`gauvain.boiche [at] gmail [dot] com`
**GitHub**
`github.com/gauvainboiche`
**LinkedIn**
`linkedin.com/in/gauvainboiche`
---
## What I'm Looking For
- **Internships / apprenticeships** in systems engineering, backend development, or ML infrastructure
- **Open source collaboration** — especially on compilers, tools, or developer infrastructure
- **Freelance work** — web applications, APIs, automation scripts
---
## Response Time
I typically respond within 48 hours. If you're reaching out about a time-sensitive opportunity, please mention it in the subject line.
---
## A Note on This Site
This portfolio is intentionally low-tech: a single HTML file, one CSS file, one JS file, and a folder of Markdown. No framework, no build step, no tracking. The source is on GitHub if you're curious.
---
*Press Q or ESC to return.*

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{
"name": "~",
"type": "dir",
"children": [
{
"name": "about.md",
"type": "file",
"path": "content/about.md"
},
{
"name": "skills.md",
"type": "file",
"path": "content/skills.md"
},
{
"name": "projects",
"type": "dir",
"children": [
{
"name": "web_dev.md",
"type": "file",
"path": "content/projects/web_dev.md"
},
{
"name": "systems.md",
"type": "file",
"path": "content/projects/systems.md"
},
{
"name": "ai_ml.md",
"type": "file",
"path": "content/projects/ai_ml.md"
}
]
},
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"name": "contact.md",
"type": "file",
"path": "content/contact.md"
}
]
}

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# AI & Machine Learning Projects
Experiments at the boundary of classical algorithms and modern deep learning.
---
## Handwritten Digit Classifier
A convolutional neural network trained on MNIST, built from scratch using **PyTorch** without relying on pretrained weights.
**Architecture:**
```
Input (1×28×28)
→ Conv2d(1, 32, 3) + ReLU + MaxPool
→ Conv2d(32, 64, 3) + ReLU + MaxPool
→ Dropout(0.25)
→ Linear(64×5×5 → 128) + ReLU
→ Dropout(0.5)
→ Linear(128 → 10)
→ LogSoftmax
```
**Results:** 99.2 % test accuracy after 10 epochs on a single CPU.
---
## Sentence Similarity Engine
A small semantic search tool that encodes sentences into embeddings and retrieves the most similar entries from a knowledge base.
**Approach:**
- Sentence embeddings via a fine-tuned BERT variant (`sentence-transformers`)
- FAISS index for approximate nearest-neighbour search at scale
- CLI interface — `search.py "your query"`
**Use case:** powering a private personal knowledge base search over Markdown notes.
---
## Reinforcement Learning: Grid World
A from-scratch implementation of Q-Learning and SARSA applied to a configurable grid-world environment.
**Implemented:**
- Tabular Q-learning with ε-greedy exploration
- SARSA (on-policy variant)
- Policy iteration and value iteration for comparison
- Visualiser showing the learned value function as a heatmap
**Written in pure Python + NumPy** — no RL libraries — for learning purposes.
---
## Anomaly Detection on Time Series
A pipeline for detecting anomalies in server metric data (CPU, memory, latency).
**Methods compared:**
- Z-score baseline
- Isolation Forest
- LSTM autoencoder (reconstruction error threshold)
**Outcome:** LSTM autoencoder outperformed statistical methods by ~18 % precision on labelled incidents from a personal homelab dataset.
---
*Press Q or ESC to return.*

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# Systems Programming Projects
Low-level work: operating systems, compilers, networking, and performance engineering.
---
## Tiny HTTP/1.1 Server (C)
A from-scratch HTTP server written in C that handles concurrent connections using `epoll` on Linux.
**What it does:**
- Serves static files with correct MIME types
- Handles `keep-alive` connections
- Parses request headers manually (no third-party parser)
- ~1,200 lines of C — intentionally minimal
**Interesting problems solved:**
- Non-blocking I/O with an event loop
- Incremental parsing of chunked request bodies
- Safe path traversal (no `../` escapes from the document root)
---
## Shell Implementation (C)
A POSIX-compatible shell (`mysh`) supporting pipelines, redirections, background jobs, and a small built-in set.
**Supported features:**
- Pipelines: `cmd1 | cmd2 | cmd3`
- I/O redirections: `>`, `>>`, `<`, `2>`
- Background jobs: `cmd &`
- Job control: `fg`, `bg`, `jobs`
- Signal handling (SIGINT, SIGTSTP, SIGHUP)
**Focus areas:** `fork/exec` model, `waitpid`, file descriptor management, signal masking.
---
## Memory Allocator
A drop-in `malloc` replacement using `mmap`-backed free lists with coalescing.
**Algorithms implemented:**
- First-fit and best-fit strategies (switchable at compile time)
- Boundary-tag coalescing to reduce fragmentation
- Thread-local caches for small allocations (reduces lock contention)
**Benchmarked** against `glibc malloc` on synthetic workloads — within 2× for mixed-size allocations.
---
## Bytecode Interpreter (Python → C)
A small virtual machine that executes a simple bytecode format, written in C. The front-end compiler is written in Python and produces `.bco` files.
**VM features:**
- Stack-based architecture (inspired by CPython)
- 30 opcodes: arithmetic, comparisons, jumps, function calls, closures
- Mark-and-sweep garbage collector
- Disassembler for debugging (`--disasm` flag)
---
*Press Q or ESC to return.*

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# Web Development Projects
A selection of web projects — from small tools to more complete applications.
---
## Terminal Portfolio *(this site)*
> The page you are currently reading was itself a project.
A fully static portfolio designed to look and behave like a Unix terminal. No framework, no build step — just HTML, CSS, and vanilla JavaScript.
**Key features:**
- CRT aesthetics: scanlines, flicker animation, bloom/glow on text
- Blinking rectangular cursor that follows mouse clicks
- Markdown content tree loaded from a manifest — add `.md` files without touching `index.html`
- Keyboard navigation (arrows, Enter, Escape, Q) + mouse
- Dynamically sized terminal window (responds to viewport changes)
**Stack:** HTML · CSS (animations, custom properties) · JavaScript (ES2020) · marked.js
---
## Personal Finance Tracker
A small single-page application to track income and expenses with monthly breakdowns.
**Highlights:**
- No backend — all data stored in `localStorage` with a clean JSON schema
- CSV import/export for moving data to spreadsheets
- Chart visualisation using the Canvas API (no libraries)
- Fully keyboard-navigable
**Stack:** JavaScript · CSS Grid · Canvas API
---
## REST API Boilerplate
A reusable Node.js/Express skeleton with authentication, request validation, and structured logging built in — designed to be forked and extended.
**Features:**
- JWT-based auth with refresh tokens
- Zod schema validation on all endpoints
- Structured JSON logs (pino)
- Docker Compose stack (app + PostgreSQL)
- OpenAPI spec auto-generated from route definitions
**Stack:** Node.js · Express · PostgreSQL · Docker · Zod
---
*Press Q or ESC to return.*

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# Skills
A snapshot of the tools and technologies I work with regularly, and where I place my confidence.
---
## Languages
| Language | Proficiency | Notes |
|------------|-------------|--------------------------------------------|
| C | ★★★★★ | Systems, embedded, performance-critical code |
| Python | ★★★★★ | Scripting, data pipelines, ML prototyping |
| JavaScript | ★★★★☆ | Full-stack, Node.js, browser APIs |
| Rust | ★★★☆☆ | Learning — memory safety, async runtimes |
| Java | ★★★☆☆ | Coursework, Spring ecosystem |
| Bash / Zsh | ★★★★☆ | Automation, CI scripting |
---
## Systems & Infrastructure
- **Operating Systems** — Linux administration, kernel concepts, process/memory management
- **Networking** — TCP/IP, HTTP, DNS, socket programming
- **Containerisation** — Docker, Docker Compose
- **Version Control** — Git (including rebase, worktrees, bisect)
- **CI/CD** — GitHub Actions, basic pipeline design
---
## Web Development
- **Frontend** — Vanilla JS/CSS, React (functional, hooks), accessible HTML
- **Backend** — Node.js/Express, Python/FastAPI, REST API design
- **Databases** — PostgreSQL, SQLite, basic Redis usage
---
## Other
- **Algorithms & Data Structures** — competitive-programming level
- **Compilers** — lexing, parsing, AST construction (hobby project)
- **Machine Learning** — PyTorch, scikit-learn, classical + deep methods
---
*Press Q or ESC to return.*

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<!DOCTYPE html> <!DOCTYPE html>
<html lang="fr"> <html lang="en">
<head> <head>
<meta charset="UTF-8"> <meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Gauvain Boiché - Portfolio</title> <title>Gauvain Boiché Portfolio</title>
<link rel="stylesheet" href="./resources/css/index.css"> <link rel="preconnect" href="https://fonts.googleapis.com">
<link href="https://fonts.googleapis.com/css2?family=Inconsolata:wght@400;700&display=swap" rel="stylesheet">
<link rel="stylesheet" href="resources/css/index.css">
</head> </head>
<body> <body>
<header> <div id="terminal">
<h1>Bienvenue sur mon Portfolio Informatique</h1> <div id="titlebar">
<nav> <span id="titlebar-title">GAUVAIN BOICHÉ — PORTFOLIO TERMINAL</span>
<ul> <span id="current-path">~</span>
<li><a href="#projets">Projets</a></li> </div>
<li><a href="#competences">Compétences</a></li> <div id="terminal-body">
<li><a href="#contact">Contact</a></li> <div id="tree-view" class="view"></div>
</ul> <div id="page-view" class="view hidden">
</nav> <div id="page-header"></div>
</header> <div id="page-scroll-area">
<div id="page-content"></div>
</div>
</div>
</div>
<div id="statusbar">
<span id="status-left"></span>
<span id="status-right"></span>
</div>
</div>
<div id="cursor-block"></div>
<section id="projets"> <script src="https://cdn.jsdelivr.net/npm/marked@9.1.6/marked.min.js"></script>
<h2>Mes Projets</h2> <script src="resources/js/terminal.js"></script>
<p>Voici quelques-uns de mes projets récents :</p>
<ul>
<li>Projet 1: Description du projet 1.</li>
<li>Projet 2: Description du projet 2.</li>
<li>Projet 3: Description du projet 3.</li>
</ul>
</section>
<section id="competences">
<h2>Mes Compétences</h2>
<p>Je maîtrise les technologies suivantes :</p>
<ul>
<li>HTML, CSS, JavaScript</li>
<li>Python, Java, C++</li>
<li>Frameworks: React, Angular, Django</li>
</ul>
</section>
<section id="contact">
<h2>Contactez-moi</h2>
<p>Pour toute question ou collaboration, n'hésitez pas à me contacter :</p>
<form action="#" method="post">
<label for="name">Nom:</label><br>
<input type="text" id="name" name="name" required><br><br>
<label for="email">Email:</label><br>
<input type="email" id="email" name="email" required><br><br>
<input type="submit" value="Envoyer">
</form>
</section>
<footer>
<p>&copy; 2023 Mon Portfolio Informatique. Tous droits réservés.</p>
</footer>
</body> </body>
</html> </html>

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/* Global aspect */ /* ============================================================
TERMINAL PORTFOLIO — CSS
Golden CRT aesthetic with flicker, bloom, scanlines
============================================================ */
:root {
--gold: #e8c200;
--gold-bright: #ffe060;
--gold-glow: #ffcf00;
--gold-dim: #a88a18;
--gold-dark: #5c4800;
--bg: #060400;
--bg-surface: #0e0900;
--font: 'Inconsolata', 'Courier New', monospace;
--item-h: 28px;
}
* { * {
box-sizing: border-box; /* permet de calculer les bordures dans les tailles affichées */ box-sizing: border-box;
margin: 0;
padding: 0;
} }
/* THEME VERT
:root {
--primary-color: #34cc26;
--secondary-color: #1fe743;
--primary-text-color: #FFFFFF;
--secondary-text-color: #4bb04b;
--background-color: #214e21;
--font-family: 'Inconsolata', monospace;
}
*/
:root { html,
--primary-color: #ccb626; body {
--secondary-color: #e7b21f; width: 100%;
--primary-text-color: #FFFFFF; height: 100%;
--secondary-text-color: #b0954b; overflow: hidden;
--background-color: #454019; background: #000;
--font-family: 'Inconsolata', monospace;
} }
body { body {
background: var(--background-color); font-family: var(--font);
background: radial-gradient(circle,var(--background-color) 0%, black 100%); font-size: 16px;
background-size: cover; line-height: 1.6;
color: var(--primary-text-color); color: var(--gold);
text-shadow: 0 0 5px var(--secondary-color); background: radial-gradient(ellipse at 50% 35%, #1a1100 0%, #090600 45%, #000 100%);
font: 1rem Inconsolata, monospace; position: relative;
height: 100vh;
width: 800px;
display: grid;
grid-template-columns: repeat(2, 400px);
} }
/* ── Scanlines overlay ─────────────────────────────────────── */
body::before {
content: '';
position: fixed;
inset: 0;
background: repeating-linear-gradient(to bottom,
transparent 0px,
transparent 2px,
rgba(0, 0, 0, 0.10) 2px,
rgba(0, 0, 0, 0.10) 3px);
pointer-events: none;
z-index: 900;
}
/* ── CRT vignette ──────────────────────────────────────────── */
body::after { body::after {
content: ""; content: '';
position: fixed;
inset: 0;
background:
radial-gradient(ellipse at center, transparent 48%, rgba(0, 0, 0, 0.65) 100%);
pointer-events: none;
z-index: 901;
}
/* ── Terminal window ───────────────────────────────────────── */
#terminal {
position: fixed;
top: 14px;
left: 14px;
right: 14px;
bottom: 14px;
display: flex;
flex-direction: column;
border: 3px solid var(--gold);
background: radial-gradient(ellipse at 50% 28%, var(--bg-surface) 0%, var(--bg) 100%);
z-index: 10;
box-shadow: inset 0 0 40px rgba(0, 0, 0, 0.7);
}
/* ── Title bar ─────────────────────────────────────────────── */
#titlebar {
display: flex;
justify-content: space-between;
align-items: center;
padding: 6px 18px;
border-bottom: 2px solid var(--gold-dim);
font-size: 13px;
font-weight: 700;
letter-spacing: 3px;
text-transform: uppercase;
color: var(--gold-glow);
flex-shrink: 0;
background: rgba(255, 183, 0, 0.025);
user-select: none;
}
#current-path {
color: var(--gold-dim);
letter-spacing: 1px;
font-weight: 400;
font-size: 13px;
}
/* ── Terminal body ─────────────────────────────────────────── */
#terminal-body {
flex: 1;
overflow: hidden;
position: relative;
}
.view {
position: absolute;
inset: 0;
display: flex;
flex-direction: column;
padding: 8px 16px;
}
.view.hidden {
display: none;
}
/* ── Tree view ─────────────────────────────────────────────── */
#tree-view {
/* populated by JS */
}
.tree-prompt {
color: var(--gold-glow);
font-weight: 700;
flex-shrink: 0;
white-space: pre;
font-size: 15px;
margin-bottom: 4px;
user-select: none;
}
.tree-sep {
border: none;
border-top: 1px solid var(--gold-dim);
flex-shrink: 0;
margin: 3px 0;
opacity: 0.6;
}
.tree-items-wrap {
flex: 1;
overflow: hidden;
position: relative;
}
.tree-items-inner {
position: absolute; position: absolute;
top: 0; top: 0;
left: 0; left: 0;
width: 100vw; right: 0;
height: 100vh; /* translateY controlled by JS for scrolling */
background: repeating-linear-gradient(
0deg,
rgba(0, 0, 0, 0.15),
rgba(0, 0, 0, 0.15) 1px,
transparent 1px,
transparent 2px
);
pointer-events: none;
} }
.tree-item {
height: var(--item-h);
line-height: var(--item-h);
padding: 0 8px;
white-space: pre;
cursor: pointer;
color: var(--gold);
font-size: 15px;
user-select: none;
transition: background 0.05s;
}
.tree-item.item-dir {
color: var(--gold-bright);
font-weight: 700;
}
.tree-item.item-parent {
color: var(--gold-dim);
}
.tree-item:hover:not(.selected) {
background: rgba(200, 164, 0, 0.10);
}
.tree-item.selected {
background: var(--gold);
color: #000 !important;
text-shadow: none !important;
animation: none;
font-weight: 700;
}
.tree-item.item-dir.selected {
background: var(--gold-bright);
}
.tree-scroll-info {
flex-shrink: 0;
font-size: 13px;
color: var(--gold-dim);
padding: 0 8px;
height: var(--item-h);
line-height: var(--item-h);
user-select: none;
}
/* ── Page view ─────────────────────────────────────────────── */
#page-header {
flex-shrink: 0;
color: var(--gold-glow);
font-weight: 700;
font-size: 15px;
white-space: pre;
margin-bottom: 4px;
user-select: none;
}
#page-scroll-area {
flex: 1;
overflow-y: auto;
scrollbar-width: none;
-ms-overflow-style: none;
border-top: 1px solid var(--gold-dim);
padding-top: 8px;
}
#page-scroll-area::-webkit-scrollbar {
display: none;
}
#page-content {
color: var(--gold);
font-size: 15px;
line-height: 1.75;
padding-bottom: 20px;
}
/* Markdown content styling */
#page-content h1 {
font-size: 1.5em;
color: var(--gold-bright);
text-transform: uppercase;
letter-spacing: 2px;
border-bottom: 2px double var(--gold-dim);
padding-bottom: 6px;
margin-bottom: 16px;
}
#page-content h2 {
font-size: 1.2em;
color: var(--gold-glow);
letter-spacing: 1px;
margin: 20px 0 10px;
}
#page-content h3 {
font-size: 1.05em;
color: var(--gold-bright);
margin: 14px 0 6px;
}
#page-content p {
margin-bottom: 10px;
line-height: 1.65;
}
#page-content ul,
#page-content ol {
padding-left: 22px;
margin-bottom: 10px;
}
#page-content li {
margin-bottom: 3px;
}
#page-content strong {
color: var(--gold-bright);
font-weight: 700;
}
#page-content em {
color: var(--gold-glow);
font-style: italic;
}
#page-content hr {
border: none;
border-top: 1px solid var(--gold-dim);
margin: 14px 0;
opacity: 0.5;
}
#page-content a {
color: var(--gold-bright);
text-decoration: underline;
}
#page-content code {
background: rgba(200, 164, 0, 0.12);
border: 1px solid var(--gold-dark);
padding: 1px 4px;
font-family: var(--font);
color: var(--gold-bright);
font-size: 0.92em;
}
#page-content pre {
background: rgba(0, 0, 0, 0.45);
border: 1px solid var(--gold-dim);
padding: 10px;
overflow-x: auto;
margin-bottom: 12px;
}
#page-content pre code {
background: none;
border: none;
padding: 0;
color: var(--gold-glow);
}
#page-content blockquote {
border-left: 3px solid var(--gold-dim);
padding-left: 14px;
color: var(--gold-glow);
margin: 12px 0;
font-style: italic;
}
/* ── Text bloom animation ──────────────────────────────────── */
@keyframes text-bloom {
0%,
100% {
text-shadow: 0 0 7px var(--gold), 0 0 14px rgba(232, 194, 0, 0.45);
}
50% {
text-shadow: 0 0 10px var(--gold-bright), 0 0 22px var(--gold-glow), 0 0 38px rgba(255, 220, 60, 0.28);
}
}
/* ── Status bar ────────────────────────────────────────────── */
#statusbar {
display: flex;
justify-content: space-between;
align-items: center;
padding: 6px 18px;
border-top: 2px solid var(--gold-dim);
font-size: 13px;
letter-spacing: 1px;
color: var(--gold);
flex-shrink: 0;
background: rgba(255, 183, 0, 0.02);
user-select: none;
}
.key {
color: var(--gold-bright);
font-weight: 700;
cursor: pointer;
padding: 2px 7px;
border: 1px solid var(--gold);
letter-spacing: 0;
transition: background 0.1s;
}
.key:hover {
background: rgba(200, 164, 0, 0.2);
}
/* ── Rectangular cursor block ──────────────────────────────── */
#cursor-block {
position: fixed;
width: 9px;
height: 18px;
background: var(--gold-bright);
pointer-events: none;
z-index: 2000;
opacity: 0;
transform: translate(0, -9px);
}
#cursor-block.active {
animation: cursor-blink 0.52s step-end infinite;
}
@keyframes cursor-blink {
0%,
100% {
opacity: 1;
}
50% {
opacity: 0;
}
}
/* ── Boot screen ───────────────────────────────────────────── */
#boot-screen {
position: absolute;
inset: 0;
display: flex;
flex-direction: column;
justify-content: center;
padding: 30px 40px;
z-index: 50;
font-size: 16px;
line-height: 2;
color: var(--gold);
}
#boot-screen.hidden {
display: none;
}
.boot-line {
white-space: pre;
}
.boot-ok {
color: var(--gold-bright);
}
.boot-dim {
color: var(--gold-dim);
}
/* ── Selection ─────────────────────────────────────────────── */
::selection { ::selection {
background: #0080FF; background: rgba(200, 164, 0, 0.35);
text-shadow: none; text-shadow: none;
} }
/* Generecis elements */
header {
grid-column: 1 / 3;
}
h1, h2, p, li, form {
width: 75%;
padding: 10px;
margin: 0 auto;
}
h1, h2 {
font-size: 2.5rem;
text-align: center;
color:var(--secondary-text-color);
border: thick double var(--secondary-text-color);
}
p {
font-size: 1.2rem;
line-height: 1.5;
width: 75%;
text-align: justify;
border: solid 1px var(--secondary-text-color);
}
a {
color: var(--primary-color);
text-decoration: none;
transition: color 0.3s ease;
}
a:hover {
color: var(--secondary-color);
text-decoration: none;
transition: color 0.3s ease;
}
/* CLASS elements */
/* ID elements */ /* ID elements */

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/* ============================================================
TERMINAL PORTFOLIO — JS
Tree navigation + Markdown page viewer
============================================================ */
'use strict';
// ── Constants ──────────────────────────────────────────────
const ITEM_H = 28; // px, must match --item-h CSS var
const SCROLL_STEP = 80; // px per arrow key in page view
const BOOT_LINES = [
{ text: 'GAUVAIN BOICHÉ PORTFOLIO TERMINAL v1.0', cls: 'boot-ok' },
{ text: '─────────────────────────────────────────', cls: 'boot-dim' },
{ text: 'Initializing display subsystem... OK', cls: '' },
{ text: 'Loading content tree... OK', cls: '' },
{ text: 'Mounting virtual filesystem... OK', cls: '' },
{ text: '─────────────────────────────────────────', cls: 'boot-dim' },
{ text: 'System ready. Use ↑↓ + ENTER to navigate.', cls: 'boot-ok' },
];
const BOOT_MS = 60; // delay between boot lines (ms)
const BOOT_HOLD = 800; // ms after last line before switching to tree
// ── State ──────────────────────────────────────────────────
const state = {
mode: 'boot', // 'boot' | 'tree' | 'page'
dirStack: [], // [{node, selectedIdx, scrollOffset}, …]
};
let manifest = null;
// ── Utility ─────────────────────────────────────────────────
function esc(str) {
return str
.replace(/&/g, '&amp;')
.replace(/</g, '&lt;')
.replace(/>/g, '&gt;')
.replace(/"/g, '&quot;');
}
function el(id) { return document.getElementById(id); }
// ── Path helpers ────────────────────────────────────────────
function buildPath() {
const parts = state.dirStack.map(d => d.node.name);
return parts.join('/').replace(/^~\//, '~/') || '~';
}
function currentDirState() {
return state.dirStack[state.dirStack.length - 1];
}
function getDirItems(dirNode, isRoot) {
const items = isRoot ? [] : [{ name: '..', type: 'parent' }];
if (dirNode.children) {
const sorted = [...dirNode.children].sort((a, b) => {
if (a.type === 'dir' && b.type !== 'dir') return -1;
if (a.type !== 'dir' && b.type === 'dir') return 1;
return a.name.localeCompare(b.name);
});
items.push(...sorted);
}
return items;
}
// ── Render dispatcher ────────────────────────────────────────
function render() {
if (state.mode === 'tree') renderTree();
else if (state.mode === 'page') renderPage();
}
// ── Tree view ────────────────────────────────────────────────
function renderTree() {
const ds = currentDirState();
const isRoot = state.dirStack.length === 1;
const items = getDirItems(ds.node, isRoot);
const path = buildPath();
el('current-path').textContent = path;
// How many items fit in the viewport
const bodyH = el('terminal-body').clientHeight;
// Rough overhead: prompt(22) + sep(10) + sep(10) + scrollinfo(22) + padding(16)
const overhead = 80;
const visible = Math.max(1, Math.floor((bodyH - overhead) / ITEM_H));
// Clamp scroll so selected item stays visible
let scroll = ds.scrollOffset || 0;
if (ds.selectedIdx < scroll) scroll = ds.selectedIdx;
if (ds.selectedIdx >= scroll + visible) scroll = ds.selectedIdx - visible + 1;
scroll = Math.max(0, Math.min(scroll, Math.max(0, items.length - visible)));
ds.scrollOffset = scroll;
const slice = items.slice(scroll, scroll + visible);
const above = scroll;
const below = Math.max(0, items.length - scroll - visible);
// Prompt line
const prompt = `gauvain@portfolio:${path}$ ls`;
// Build HTML
let html = `<div class="tree-prompt">${esc(prompt)}</div>`;
html += `<hr class="tree-sep">`;
html += `<div class="tree-items-wrap"><div class="tree-items-inner" id="tree-items-inner">`;
slice.forEach((item, vi) => {
const realIdx = scroll + vi;
const sel = realIdx === ds.selectedIdx;
const isDir = item.type === 'dir';
const isPar = item.type === 'parent';
const icon = isPar ? '../' : (isDir ? `${item.name}/` : item.name);
const cls = [
'tree-item',
sel ? 'selected' : '',
isDir ? 'item-dir' : '',
isPar ? 'item-parent' : '',
].filter(Boolean).join(' ');
html += `<div class="${cls}" data-idx="${realIdx}">${esc(icon)}</div>`;
});
html += `</div></div>`;
html += `<hr class="tree-sep">`;
const scrollInfo = [
above > 0 ? `${above} above` : '',
below > 0 ? `${below} below` : '',
].filter(Boolean).join(' ');
html += `<div class="tree-scroll-info">${scrollInfo}</div>`;
el('tree-view').innerHTML = html;
el('tree-view').classList.remove('hidden');
el('page-view').classList.add('hidden');
// Update status bar
el('status-left').textContent = `${items.length} item(s)`;
el('status-right').innerHTML =
`<span class="key">↑↓</span> SELECT &nbsp;` +
`<span class="key">ENTER</span> OPEN &nbsp;` +
`<span class="key">ESC</span> BACK`;
// Event delegation on items
const inner = el('tree-items-inner');
if (inner) {
inner.addEventListener('click', onTreeItemClick);
inner.addEventListener('dblclick', onTreeItemDblClick);
}
}
function onTreeItemClick(e) {
const itemEl = e.target.closest('.tree-item');
if (!itemEl) return;
const idx = parseInt(itemEl.dataset.idx, 10);
currentDirState().selectedIdx = idx;
renderTree();
}
function onTreeItemDblClick(e) {
const itemEl = e.target.closest('.tree-item');
if (!itemEl) return;
const idx = parseInt(itemEl.dataset.idx, 10);
currentDirState().selectedIdx = idx;
openSelected();
}
// ── Open selected item ────────────────────────────────────────
function openSelected() {
const ds = currentDirState();
const isRoot = state.dirStack.length === 1;
const items = getDirItems(ds.node, isRoot);
const item = items[ds.selectedIdx];
if (!item) return;
if (item.type === 'parent') {
navigateBack();
return;
}
if (item.type === 'dir') {
state.dirStack.push({ node: item, selectedIdx: 0, scrollOffset: 0 });
renderTree();
return;
}
// It's a file — load it
loadPage(item.path, item.name);
}
// ── Navigate back ─────────────────────────────────────────────
function navigateBack() {
if (state.mode === 'page') {
state.mode = 'tree';
render();
return;
}
if (state.dirStack.length > 1) {
state.dirStack.pop();
renderTree();
}
}
// ── Page view ─────────────────────────────────────────────────
async function loadPage(path, name) {
state.mode = 'page';
el('tree-view').classList.add('hidden');
el('page-view').classList.remove('hidden');
el('page-header').textContent = `gauvain@portfolio:${buildPath()}$ cat ${name}`;
el('page-content').innerHTML = `<p style="color:var(--gold-dim)">Loading…</p>`;
el('current-path').textContent = buildPath() + '/' + name;
updatePageStatus();
try {
const res = await fetch(path);
if (!res.ok) throw new Error(`HTTP ${res.status}`);
const md = await res.text();
el('page-content').innerHTML = marked.parse(md);
el('page-scroll-area').scrollTop = 0;
} catch (err) {
el('page-content').innerHTML =
`<p style="color:#a00">ERROR: Could not load <code>${esc(path)}</code><br>${esc(err.message)}</p>`;
}
updatePageStatus();
}
function renderPage() {
el('tree-view').classList.add('hidden');
el('page-view').classList.remove('hidden');
updatePageStatus();
}
function updatePageStatus() {
el('status-left').textContent = state.mode === 'page' ? 'READING' : '';
el('status-right').innerHTML =
`<span class="key" id="btn-up">↑</span> SCROLL UP &nbsp;` +
`<span class="key" id="btn-dn">↓</span> SCROLL DOWN &nbsp;` +
`<span class="key" id="btn-q">Q</span> QUIT`;
const sa = el('page-scroll-area');
const btnUp = el('btn-up');
const btnDn = el('btn-dn');
const btnQ = el('btn-q');
if (btnUp) btnUp.onclick = () => { sa.scrollBy({ top: -SCROLL_STEP, behavior: 'smooth' }); };
if (btnDn) btnDn.onclick = () => { sa.scrollBy({ top: SCROLL_STEP, behavior: 'smooth' }); };
if (btnQ) btnQ.onclick = navigateBack;
}
// ── Keyboard events ───────────────────────────────────────────
function setupKeyboard() {
document.addEventListener('keydown', (e) => {
if (state.mode === 'boot') return;
if (state.mode === 'tree') {
handleTreeKey(e);
} else if (state.mode === 'page') {
handlePageKey(e);
}
});
}
function handleTreeKey(e) {
const ds = currentDirState();
const isRoot = state.dirStack.length === 1;
const items = getDirItems(ds.node, isRoot);
switch (e.key) {
case 'ArrowUp':
e.preventDefault();
ds.selectedIdx = Math.max(0, ds.selectedIdx - 1);
renderTree();
break;
case 'ArrowDown':
e.preventDefault();
ds.selectedIdx = Math.min(items.length - 1, ds.selectedIdx + 1);
renderTree();
break;
case 'Enter':
e.preventDefault();
openSelected();
break;
case 'Escape':
case 'ArrowLeft':
e.preventDefault();
navigateBack();
break;
case 'ArrowRight':
e.preventDefault();
openSelected();
break;
}
}
function handlePageKey(e) {
const sa = el('page-scroll-area');
switch (e.key) {
case 'ArrowUp':
case 'k':
e.preventDefault();
sa.scrollBy({ top: -SCROLL_STEP, behavior: 'smooth' });
break;
case 'ArrowDown':
case 'j':
e.preventDefault();
sa.scrollBy({ top: SCROLL_STEP, behavior: 'smooth' });
break;
case 'Home':
e.preventDefault();
sa.scrollTo({ top: 0, behavior: 'smooth' });
break;
case 'End':
e.preventDefault();
sa.scrollTo({ top: sa.scrollHeight, behavior: 'smooth' });
break;
case 'PageUp':
e.preventDefault();
sa.scrollBy({ top: -(sa.clientHeight * 0.85), behavior: 'smooth' });
break;
case 'PageDown':
e.preventDefault();
sa.scrollBy({ top: (sa.clientHeight * 0.85), behavior: 'smooth' });
break;
case 'q':
case 'Q':
case 'Escape':
e.preventDefault();
navigateBack();
break;
}
}
// ── Cursor block (click simulation) ──────────────────────────
function setupCursor() {
const cursor = el('cursor-block');
let hideTimer = null;
document.addEventListener('click', (e) => {
// Skip clicks on status-bar keys (they have their own handlers)
if (e.target.classList.contains('key')) return;
cursor.style.left = e.clientX + 'px';
cursor.style.top = e.clientY + 'px';
cursor.classList.add('active');
cursor.style.opacity = '1';
clearTimeout(hideTimer);
hideTimer = setTimeout(() => {
cursor.classList.remove('active');
cursor.style.opacity = '0';
}, 2800);
});
}
// ── Boot sequence ─────────────────────────────────────────────
async function runBoot() {
// Inject a temporary boot screen inside the terminal body
const bootDiv = document.createElement('div');
bootDiv.id = 'boot-screen';
// Append to tree-view placeholder (it's empty at this point)
el('tree-view').appendChild(bootDiv);
el('tree-view').classList.remove('hidden');
for (let i = 0; i < BOOT_LINES.length; i++) {
await sleep(BOOT_MS);
const { text, cls } = BOOT_LINES[i];
const line = document.createElement('div');
line.className = 'boot-line ' + (cls || '');
line.textContent = text;
bootDiv.appendChild(line);
}
await sleep(BOOT_HOLD);
bootDiv.remove();
}
function sleep(ms) {
return new Promise(resolve => setTimeout(resolve, ms));
}
// ── Init ──────────────────────────────────────────────────────
document.addEventListener('DOMContentLoaded', async () => {
try {
// Fetch manifest first (fail fast)
const res = await fetch('content/manifest.json');
if (!res.ok) throw new Error(`Manifest HTTP ${res.status}`);
manifest = await res.json();
} catch (err) {
showFatal('Failed to load content/manifest.json — ' + err.message);
return;
}
state.dirStack = [{ node: manifest, selectedIdx: 0, scrollOffset: 0 }];
// Boot screen then tree
state.mode = 'boot';
await runBoot();
state.mode = 'tree';
renderTree();
setupKeyboard();
setupCursor();
});
function showFatal(msg) {
const treeView = el('tree-view');
treeView.classList.remove('hidden');
treeView.innerHTML = `
<div style="padding:20px;color:#c00;text-shadow:0 0 8px #a00;">
<div style="font-size:1.2em;margin-bottom:10px;">SYSTEM ERROR</div>
<div>${esc(msg)}</div>
<div style="margin-top:16px;color:var(--gold-dim)">
Make sure content/manifest.json exists and the page is served over HTTP.
</div>
</div>`;
}