@okaryo/gatsby-remark-link-card
Version:
Gatsby Remark plugin to embed link card
179 lines (178 loc) • 8.6 kB
JavaScript
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g = Object.create((typeof Iterator === "function" ? Iterator : Object).prototype);
return g.next = verb(0), g["throw"] = verb(1), g["return"] = verb(2), typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (g && (g = 0, op[0] && (_ = 0)), _) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
import client from "open-graph-scraper";
import sanitizeHtml from "sanitize-html";
import { visit } from "unist-util-visit";
var faviconImageSrc = function (url) { return __awaiter(void 0, void 0, void 0, function () {
var faviconUrl, res;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
faviconUrl = "https://www.google.com/s2/favicons?domain=".concat(url.hostname, "&sz=14");
return [4 /*yield*/, fetch(faviconUrl, { method: "HEAD" })];
case 1:
res = _a.sent();
if (!res.ok)
return [2 /*return*/, ""];
return [2 /*return*/, faviconUrl];
}
});
}); };
var h = function (type, attrs, children) {
if (attrs === void 0) { attrs = {}; }
if (children === void 0) { children = []; }
return {
type: "element",
tagName: type,
data: {
hName: type,
hProperties: attrs,
hChildren: children,
},
properties: attrs,
children: children,
};
};
var text = function (value) {
if (value === void 0) { value = ""; }
var sanitized = sanitizeHtml(value);
return {
type: "text",
value: sanitized,
};
};
var className = function (value) {
var prefix = "gatsby-remark-link-card";
return "".concat(prefix, "__").concat(value);
};
var createLinkCardNode = function (title, description, faviconUrl, url, ogImageUrl) {
return h("div", { className: className("container") }, [
h("a", {
className: className("link"),
href: url.toString(),
rel: "noreferrer noopener",
target: "_blank",
}, [
h("div", { className: className("main") }, [
h("div", { className: className("content") }, [
h("div", { className: className("title") }, [text(title)]),
h("div", { className: className("description") }, [
text(description),
]),
]),
h("div", { className: className("meta") }, [
faviconUrl
? h("img", {
className: className("favicon"),
src: faviconUrl,
width: 14,
height: 14,
alt: "favicon",
})
: h("div"),
h("span", { className: className("url") }, [text(url.hostname)]),
]),
]),
ogImageUrl
? h("div", { className: className("thumbnail") }, [
h("img", {
src: ogImageUrl,
className: className("image"),
alt: "ogImage",
}),
])
: h("div"),
]),
]);
};
export default (function (_a) { return __awaiter(void 0, [_a], void 0, function (_b) {
var transformers;
var markdownAST = _b.markdownAST;
return __generator(this, function (_c) {
switch (_c.label) {
case 0:
transformers = [];
visit(markdownAST, "paragraph", function (paragraphNode, _, parent) {
if (paragraphNode.data !== undefined ||
paragraphNode.children.length !== 1 ||
paragraphNode.children[0].type !== "link" ||
parent.type !== "root") {
return markdownAST;
}
var linkNode = paragraphNode.children[0];
if (linkNode.url !== linkNode.children[0].value) {
return markdownAST;
}
transformers.push(function () { return __awaiter(void 0, void 0, void 0, function () {
var result, url, ogImageUrl, faviconUrl, linkCard, e_1;
var _a, _b;
return __generator(this, function (_c) {
switch (_c.label) {
case 0:
_c.trys.push([0, 3, , 4]);
return [4 /*yield*/, client({ url: linkNode.url })];
case 1:
result = (_c.sent()).result;
url = new URL(linkNode.url);
ogImageUrl = "";
try {
ogImageUrl = new URL((_b = (_a = result.ogImage[0]) === null || _a === void 0 ? void 0 : _a.url) !== null && _b !== void 0 ? _b : "").toString();
}
catch (e) {
ogImageUrl = "";
}
return [4 /*yield*/, faviconImageSrc(url)];
case 2:
faviconUrl = _c.sent();
linkCard = createLinkCardNode(result.ogTitle, result.ogDescription, faviconUrl, url, ogImageUrl);
paragraphNode.children = [linkCard];
return [3 /*break*/, 4];
case 3:
e_1 = _c.sent();
return [2 /*return*/];
case 4: return [2 /*return*/];
}
});
}); });
});
return [4 /*yield*/, Promise.all(transformers.map(function (t) { return t(); }))];
case 1:
_c.sent();
return [2 /*return*/, markdownAST];
}
});
}); });