1//! Prints the link preview's card as an SVG, 1200 by 630: what Discord or Twitter shows when the
2//! site's address is pasted. `tools/build-web.sh` turns it into the PNG the page's tags point at.
3//!
4//! The look is the Jev sites' own (`jev_ui::card`): the dot field, the pink band with the site's
5//! name, and a window. What is inside the window is this site's.
6
7use jev_ui::card::{Chrome, INK, text};
8use jevhooks_web::content::{CARD_HEIGHT, CARD_WIDTH, NAME};
9
10/// What the window says, a line each, in the card's pixel type.
11const LINES: [&str; 3] = ["JEV JUDGES WHAT", "CLAUDE CODE IS", "ABOUT TO DO"];
12
13fn main() {
14    let chrome = Chrome::new(2);
15    assert_eq!((chrome.width(), chrome.height()), (CARD_WIDTH, CARD_HEIGHT), "the card is the size the page's tags declare");
16    let content = chrome.content();
17    let scale = 4 * chrome.unit();
18    // A glyph is eight units tall; a line and a half between baselines.
19    let step = 12 * scale;
20    let mut svg = chrome.background_svg("hooks.lmjtfy.fun");
21    let end = svg.rfind("</svg>").expect("a whole SVG document");
22    let mut inside = chrome.window_svg(NAME);
23    for (line, words) in LINES.iter().enumerate() {
24        inside.push_str(&text(content.x, content.y + line as u32 * step, scale, INK, words));
25    }
26    svg.insert_str(end, &inside);
27    println!("{svg}");
28}