|
| 1 | +import * as crypto from "crypto"; |
| 2 | +import { parse as multiPartParse } from "parse-multipart-data"; |
| 3 | +import type { R2Bucket } from "@cloudflare/workers-types"; |
| 4 | +import { |
| 5 | + categories, |
| 6 | + DiceValue, |
| 7 | + getScoreSheetScore, |
| 8 | + isScoreSheet, |
| 9 | + isScoreSheetFinished, |
| 10 | +} from "../gameRules/types"; |
| 11 | +import { getScore } from "../gameRules/getScore"; |
| 12 | +import { nDice } from "../gameRules/game"; |
| 13 | + |
| 14 | +const handler = async (req: Request, env: Env) => { |
| 15 | + const contentType = req.headers.get("content-type"); |
| 16 | + if (!contentType?.startsWith("multipart/form-data;")) |
| 17 | + return new Response("Expect multipart", { status: 400 }); |
| 18 | + |
| 19 | + const boundary = contentType.split("boundary=")[1].trim(); |
| 20 | + |
| 21 | + const params = multiPartParse(Buffer.from(await req.arrayBuffer()), boundary); |
| 22 | + |
| 23 | + const screenshots = new Map<string, string>(); |
| 24 | + for (const category of categories) { |
| 25 | + const param = params.find((p) => p.name === category); |
| 26 | + |
| 27 | + if (!param) |
| 28 | + return new Response(`missing screenshot for category "${category}"`, { |
| 29 | + status: 400, |
| 30 | + }); |
| 31 | + |
| 32 | + const extension = |
| 33 | + (param.type === "image/jpeg" && ".jpeg") || |
| 34 | + (param.type === "image/png" && ".png") || |
| 35 | + (param.type === "image/webp" && ".webp"); |
| 36 | + |
| 37 | + if (param.data.byteLength > 18_000 || !extension) |
| 38 | + return new Response("unexpected image format", { status: 400 }); |
| 39 | + |
| 40 | + const hash = crypto |
| 41 | + .createHash("md5") |
| 42 | + .update(new Uint8Array(param.data)) |
| 43 | + .digest("base64") |
| 44 | + .replaceAll(/[\/\+]/g, "") |
| 45 | + .padEnd(16, "=") |
| 46 | + .slice(0, 16) |
| 47 | + .toLowerCase(); |
| 48 | + |
| 49 | + const key = hash + extension; |
| 50 | + await env.images_bucket.put(key, param.data, { |
| 51 | + customMetadata: { |
| 52 | + "cache-control": "public, max-age=31536000, immutable", |
| 53 | + }, |
| 54 | + }); |
| 55 | + |
| 56 | + screenshots.set(category, key); |
| 57 | + } |
| 58 | + |
| 59 | + const gameParam = params.find((p) => p.name === "game"); |
| 60 | + if (!gameParam) return new Response(`missing entry "game"`, { status: 400 }); |
| 61 | + const game = JSON.parse(gameParam.data.toString()); |
| 62 | + |
| 63 | + const scoreSheet = game.scoreSheet; |
| 64 | + if (!isScoreSheet(scoreSheet, nDice) || !isScoreSheetFinished(scoreSheet)) |
| 65 | + return new Response(`missing finished scoresheet"`, { status: 400 }); |
| 66 | + |
| 67 | + const isUser = (x: any): x is { name: string; uri?: string } => |
| 68 | + (x && typeof x.name === "string" && !x.uri) || |
| 69 | + (typeof x.uri === "string" && |
| 70 | + ["https://github.com", "https://bsky.app"].some( |
| 71 | + (origin) => origin === new URL(x.uri).origin |
| 72 | + )); |
| 73 | + const user = game.user; |
| 74 | + if (!isUser(user)) |
| 75 | + return new Response(`missing valid user"`, { status: 400 }); |
| 76 | + |
| 77 | + const dicesToUnicode = (dices: DiceValue[]) => |
| 78 | + dices |
| 79 | + .map( |
| 80 | + (d) => |
| 81 | + (d === 1 && "⚀") || |
| 82 | + (d === 2 && "⚁") || |
| 83 | + (d === 3 && "⚂") || |
| 84 | + (d === 4 && "⚃") || |
| 85 | + (d === 5 && "⚄") || |
| 86 | + (d === 6 && "⚅") || |
| 87 | + "\xa0" |
| 88 | + ) |
| 89 | + .join(""); |
| 90 | + |
| 91 | + const markdownUser = (() => { |
| 92 | + let m; |
| 93 | + if ((m = user.uri?.match(/^https:\/\/github\.com\/([^\/]+)\/?$/))) |
| 94 | + return `@${m[1]}`; |
| 95 | + if (user.uri) return `[${user.name}](${user.uri})`; |
| 96 | + return user.name; |
| 97 | + })(); |
| 98 | + |
| 99 | + const markdownBlock = |
| 100 | + `## ${getScoreSheetScore(scoreSheet)} by ${markdownUser}\n` + |
| 101 | + "|Combination|Score|Screenshot|\n" + |
| 102 | + "|--|--|--|\n" + |
| 103 | + categories |
| 104 | + .map( |
| 105 | + (category) => |
| 106 | + "| " + |
| 107 | + category.padEnd( |
| 108 | + Math.max(...categories.map((c) => c.length)), |
| 109 | + "\xa0" |
| 110 | + ) + |
| 111 | + " | " + |
| 112 | + getScore(category, scoreSheet[category]) |
| 113 | + .toString() |
| 114 | + .padStart(2, "\xa0") + |
| 115 | + " " + |
| 116 | + dicesToUnicode(scoreSheet[category]) + |
| 117 | + " | " + |
| 118 | + `<img width="50px" height="30px" src="${ |
| 119 | + env.IMAGES_BUCKET_PUBLIC_URL + screenshots.get(category) |
| 120 | + }"/>` + |
| 121 | + " |" |
| 122 | + ) |
| 123 | + .join("\n"); |
| 124 | + |
| 125 | + const { entries, id } = await getLeaderboard(env); |
| 126 | + |
| 127 | + if (entries.some((e) => e.block === markdownBlock)) |
| 128 | + return new Response(`already submitted"`, { status: 400 }); |
| 129 | + |
| 130 | + entries.push({ score: getScoreSheetScore(scoreSheet), block: markdownBlock }); |
| 131 | + entries.sort((a, b) => b.score - a.score); |
| 132 | + |
| 133 | + while (entries.length > 6) entries.pop(); |
| 134 | + |
| 135 | + await setLeaderboard(env, id, entries); |
| 136 | + |
| 137 | + const isTopScore = entries.some((b) => b.block === markdownBlock); |
| 138 | + const leaderboardUrl = `https://github.com/${env.LEADER_BOARD_REPOSITORY}/issues/${env.LEADER_BOARD_ISSUE_NUMBER}`; |
| 139 | + |
| 140 | + return new Response(JSON.stringify({ isTopScore, leaderboardUrl }), { |
| 141 | + status: 200, |
| 142 | + headers: { "Content-Type": "application/json" }, |
| 143 | + }); |
| 144 | +}; |
| 145 | + |
| 146 | +const getLeaderboard = async (env: Env) => { |
| 147 | + const query = /* GraphQL */ ` |
| 148 | + query ( |
| 149 | + $repository_owner: String! |
| 150 | + $repository_name: String! |
| 151 | + $issue_number: Int! |
| 152 | + ) { |
| 153 | + repository(name: $repository_name, owner: $repository_owner) { |
| 154 | + issue(number: $issue_number) { |
| 155 | + body |
| 156 | + id |
| 157 | + } |
| 158 | + } |
| 159 | + } |
| 160 | + `; |
| 161 | + const [repository_owner, repository_name] = |
| 162 | + env.LEADER_BOARD_REPOSITORY.split("/"); |
| 163 | + const variables = { |
| 164 | + repository_owner, |
| 165 | + repository_name, |
| 166 | + issue_number: +env.LEADER_BOARD_ISSUE_NUMBER, |
| 167 | + }; |
| 168 | + |
| 169 | + const data = await githubGraphQLRequest<any>(env, query, variables); |
| 170 | + |
| 171 | + const body = data.repository.issue.body as string; |
| 172 | + const id = data.repository.issue.id as string; |
| 173 | + const entries = [ |
| 174 | + ...body.matchAll(/## (\d+)[^\n]*\n(\|[^\n]*\|\n?){3,}/g), |
| 175 | + ].map(([block, score]) => ({ block, score: +score })); |
| 176 | + |
| 177 | + return { entries, id }; |
| 178 | +}; |
| 179 | + |
| 180 | +const setLeaderboard = async ( |
| 181 | + env: Env, |
| 182 | + id: string, |
| 183 | + entries: { block: string }[] |
| 184 | +) => { |
| 185 | + const query = /* GraphQL */ ` |
| 186 | + mutation ($body: String!, $id: ID!) { |
| 187 | + updateIssue(input: { id: $id, body: $body }) { |
| 188 | + issue { |
| 189 | + body |
| 190 | + } |
| 191 | + } |
| 192 | + } |
| 193 | + `; |
| 194 | + |
| 195 | + const variables = { |
| 196 | + id, |
| 197 | + body: |
| 198 | + entries.map((e) => e.block).join("\n") + |
| 199 | + "\n\n_This list is generated from players submission_", |
| 200 | + }; |
| 201 | + |
| 202 | + await githubGraphQLRequest(env, query, variables); |
| 203 | +}; |
| 204 | + |
| 205 | +const githubGraphQLRequest = async <T extends unknown>( |
| 206 | + { GITHUB_ACCESS_TOKEN }: { GITHUB_ACCESS_TOKEN: string }, |
| 207 | + query: string, |
| 208 | + variables: any |
| 209 | +) => { |
| 210 | + const res = await fetch("https://api.github.com/graphql", { |
| 211 | + headers: { |
| 212 | + Authorization: `bearer ${GITHUB_ACCESS_TOKEN}`, |
| 213 | + "Content-Type": "application/json", |
| 214 | + "User-Agent": "me@platane.me", |
| 215 | + }, |
| 216 | + method: "POST", |
| 217 | + body: JSON.stringify({ variables, query }), |
| 218 | + }); |
| 219 | + |
| 220 | + if (!res.ok) throw new Error(await res.text().catch(() => res.statusText)); |
| 221 | + |
| 222 | + const { data, errors } = (await res.json()) as { |
| 223 | + data: any; |
| 224 | + errors?: { message: string }[]; |
| 225 | + }; |
| 226 | + |
| 227 | + if (errors?.[0]) throw errors[0]; |
| 228 | + |
| 229 | + return data as T; |
| 230 | +}; |
| 231 | + |
| 232 | +type Env = { |
| 233 | + GITHUB_ACCESS_TOKEN: string; |
| 234 | + LEADER_BOARD_REPOSITORY: string; |
| 235 | + LEADER_BOARD_ISSUE_NUMBER: string; |
| 236 | + IMAGES_BUCKET_PUBLIC_URL: string; |
| 237 | + images_bucket: R2Bucket; |
| 238 | +}; |
| 239 | + |
| 240 | +const cors = |
| 241 | + < |
| 242 | + Headers extends { |
| 243 | + get: (v: string) => string | null; |
| 244 | + set: (name: string, value: string) => unknown; |
| 245 | + }, |
| 246 | + Req extends { headers: Headers }, |
| 247 | + Res extends { headers: Headers }, |
| 248 | + A extends Array<any> |
| 249 | + >( |
| 250 | + f: (req: Req, ...args: A) => Res | Promise<Res> |
| 251 | + ) => |
| 252 | + async (req: Req, ...args: A) => { |
| 253 | + const res = await f(req, ...args); |
| 254 | + |
| 255 | + const origin = req.headers.get("origin"); |
| 256 | + |
| 257 | + if (origin) { |
| 258 | + const { host, hostname } = new URL(origin); |
| 259 | + |
| 260 | + if (hostname === "localhost" || host === "platane.github.io") |
| 261 | + res.headers.set("Access-Control-Allow-Origin", origin); |
| 262 | + } |
| 263 | + |
| 264 | + res.headers.set("Access-Control-Allow-Methods", "POST, OPTIONS"); |
| 265 | + res.headers.set("Access-Control-Allow-Headers", "Content-Type"); |
| 266 | + return res; |
| 267 | + }; |
| 268 | + |
| 269 | +export default { |
| 270 | + fetch: cors((req: Request, env: Env) => { |
| 271 | + const url = new URL(req.url); |
| 272 | + |
| 273 | + if (req.method === "OPTIONS") return new Response(); |
| 274 | + |
| 275 | + if (req.method === "POST") return handler(req, env); |
| 276 | + |
| 277 | + return new Response("", { status: 404 }); |
| 278 | + }), |
| 279 | +}; |
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