98 lines
2.4 KiB
JavaScript
98 lines
2.4 KiB
JavaScript
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/* ------------------------------ Chrome Stuff ------------------------------ */
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const openAndSend = ({url, message, timeout, callback=() => {}}) =>
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chrome.tabs.create({url: url})
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.then(tab =>
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setTimeout(() =>
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chrome.tabs.sendMessage(tab.id, message, callback),
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timeout
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));
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/* ----------------------------- Boolean Algebra ---------------------------- */
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const openBoolean = msg =>
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openAndSend({
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url: "https://boolean-algebra.com",
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message: {type: "bool_alg", content: msg},
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timeout: 5000,
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callback: (res) =>
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openAndSend({
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url: "pages/answer/answer.html",
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message: {type: "bool_alg_ans", content: res.content},
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timeout: 1000,
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})
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});
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/* ----------------------------- Induction Proof ---------------------------- */
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openInduction = msg =>
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openAndSend({
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url: "https://www.wolframalpha.com/input/?i=" + encodeURIComponent(msg.expression),
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message: {type: "induction", content: msg},
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timeout: 15000,
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callback: (res) =>
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openAndSend({
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url: "pages/answer/answer.html",
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message: {type: "induction_ans", content: res.content},
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timeout: 1000,
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})
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});
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/* ------------------------ Permutation, Combination ------------------------ */
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const fac = (n) => {
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let val=1;
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for (let i = 2; i <= n; i++)
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val = val * i;
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return val;
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}
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const perm = (n, r) => fac(n) / fac(n - r);
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const comb = (n, r) => fac(n) / (fac(n - r) * fac(r));
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const openPerm = msg =>
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openAndSend({
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url: "pages/answer/answer.html",
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message: {type: "perms_ans", content: `\\[ \\nPr{${msg.n}}{${msg.r}} = ${perm(msg.n, msg.r)} \\]`},
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timeout: 1000,
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});
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const openComb = msg =>
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openAndSend({
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url: "pages/answer/answer.html",
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message: {type: "combs_ans", content: `\\[ \\nCr{${msg.n}}{${msg.r}} = ${comb(msg.n, msg.r)} \\]`},
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timeout: 1000,
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})
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/* ----------------------------- Message switch ----------------------------- */
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chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
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console.log("Message recieved!");
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console.log("Checking message type!");
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switch (message.type) {
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case "bool_alg":
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openBoolean(message.content);
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break;
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case "induction":
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openInduction(message.content);
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break;
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case "perm":
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openPerm(message.content);
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break;
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case "comb":
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openComb(message.content);
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break;
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default:
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console.error("Couldn't recognize message!");
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break;
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}
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});
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