[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8},"actionData","errors","root",{"_101":102,"_103":104},"routes/embed.x.$handle.$name.$",{"_9":10,"_11":12,"_13":14,"_15":16,"_17":18,"_19":20,"_21":-5},"handle","rgb","name","math-course","path","main.ts","project",{"_22":45,"_11":12,"_33":46,"_47":-5,"_48":42,"_49":50,"_51":50,"_52":53,"_54":-5,"_55":56,"_57":25,"_58":32,"_59":-5,"_60":-5,"_61":62,"_63":64,"_65":-5,"_66":-5,"_67":-5,"_68":-5,"_69":70,"_71":70,"_72":73,"_74":73,"_75":73,"_76":70,"_77":70,"_78":79,"_80":81,"_82":83,"_84":42},"file",{"_22":23,"_11":14,"_24":25,"_26":-5,"_27":28,"_29":30,"_31":32,"_33":34,"_35":36,"_37":38,"_39":40,"_41":42,"_43":12,"_13":44},"permalink","https://www.val.town/x/rgb/math-course/code/main.ts","extension","id","e3253cdf-b5cb-4b39-ac0b-14621a584903","fileId","91a543da-9e8c-11f1-8cb6-1607ee4eb77e","parentId","branchId","10b77b3e-35ba-455a-8ac5-3717876be520","branchVersion",16,"latest",true,"createdAt",["D",1787447344593],"version",3,"fileType","http","content","// From Algebra to AI — Val Town host with cloud-synced progress\n// The course HTML lives in Val Town blob storage (it exceeds the 80KB per-file\n// limit for val source files). Upload it with upload-course.sh from the Mac.\n// Progress is stored in blob storage too, so every device sees the same progress.\n//\n// Routes (all require ?key=COURSE_KEY):\n// GET / serve the course with the sync adapter injected\n// POST /api/course upload/replace the course HTML (body = the HTML file)\n// GET /api/state read saved progress\n// POST /api/state write saved progress\n//\n// Setup (see Val_Town_Setup.md for the full walkthrough):\n// 1. This file is the val's HTTP entry point (main.tsx) — the only val file.\n// 2. Add an environment variable COURSE_KEY (your private password).\n// 3. Run upload-course.sh to push math-course.html into blob storage.\n// 4. Open https://YOUR-VAL-URL/?key=YOUR-COURSE-KEY\n\nimport { blob } from \"https://esm.town/v/std/blob/main.ts\";\n\nconst COURSE_KEY = Deno.env.get(\"COURSE_KEY\");\nconst BLOB_PREFIX = \"mathcourse-state:\";\nconst COURSE_BLOB = \"mathcourse-html\";\n\n/*ADAPTER_START*/\nconst ADAPTER = ``;\n/*ADAPTER_END*/\n\nfunction page(title: string, body: string, status = 200): Response {\n return new Response(\n \"\" +\n \"\" + title +\n \"\" +\n body + \"\",\n { status, headers: { \"content-type\": \"text/html; charset=utf-8\" } },\n );\n}\n\nexport default async function (req: Request): Promise {\n const url = new URL(req.url);\n const key = url.searchParams.get(\"key\") || \"\";\n\n if (!COURSE_KEY) {\n return page(\n \"Almost there\",\n \"

Almost there

This val needs one more thing: an environment variable named COURSE_KEY. \" +\n \"In the val's left sidebar, open Environment variables, add COURSE_KEY, and give it a private \" +\n \"password of your choosing. Then open this page again as ?key=that-password.

\",\n );\n }\n\n if (key !== COURSE_KEY) {\n return page(\n \"Locked\",\n \"

🔒 Locked

This page needs your course key in the address, like \" +\n \"?key=your-course-key. Check the bookmark you saved during setup.

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The val is running, but the course file isn't in storage yet. \" +\n \"On the Mac, run upload-course.sh from the Math Course folder (see Val_Town_Setup.md), \" +\n \"then reload this page.

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