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| 1 | +import { default as db } from '$lib/server/database'; |
| 2 | +import { sha256 } from '$lib/utils/hash'; |
| 3 | + |
| 4 | +const EXTERNAL_API_TIMEOUT_MS = 5000; |
| 5 | + |
| 6 | +/** Calls the external API to check if the validation code appears in the user's AtCoder affiliation. */ |
| 7 | +async function confirmWithExternalApi(handle: string, validationCode: string): Promise<boolean> { |
| 8 | + const controller = new AbortController(); |
| 9 | + const timeoutId = setTimeout(() => controller.abort(), EXTERNAL_API_TIMEOUT_MS); |
| 10 | + |
| 11 | + try { |
| 12 | + const baseUrl = process.env.CONFIRM_API_URL; |
| 13 | + if (!baseUrl) { |
| 14 | + throw new Error('CONFIRM_API_URL is not set.'); |
| 15 | + } |
| 16 | + const url = `${baseUrl}?user=${handle}`; |
| 17 | + const response = await fetch(url, { signal: controller.signal }); |
| 18 | + |
| 19 | + if (!response.ok) { |
| 20 | + throw new Error('Network response was not ok.'); |
| 21 | + } |
| 22 | + |
| 23 | + try { |
| 24 | + const jsonData = await response.json(); |
| 25 | + return jsonData.contents?.some((item: string) => item === validationCode) ?? false; |
| 26 | + } catch { |
| 27 | + // Invalid JSON from external API — treat as unconfirmed |
| 28 | + return false; |
| 29 | + } |
| 30 | + } finally { |
| 31 | + clearTimeout(timeoutId); |
| 32 | + } |
| 33 | +} |
| 34 | + |
| 35 | +/** |
| 36 | + * Generates a SHA256 validation code, stores it in AtCoderAccount, and returns the code. |
| 37 | + * Creates the AtCoderAccount record if it does not exist yet. |
| 38 | + */ |
| 39 | +export async function generate(username: string, handle: string): Promise<string> { |
| 40 | + const date = new Date().toISOString(); |
| 41 | + const validationCode = await sha256(username + date); |
| 42 | + |
| 43 | + const user = await db.user.findUniqueOrThrow({ where: { username } }); |
| 44 | + |
| 45 | + await db.atCoderAccount.upsert({ |
| 46 | + where: { userId: user.id }, |
| 47 | + create: { userId: user.id, handle, validationCode, isValidated: false }, |
| 48 | + update: { handle, validationCode, isValidated: false }, |
| 49 | + }); |
| 50 | + |
| 51 | + return validationCode; |
| 52 | +} |
| 53 | + |
| 54 | +/** |
| 55 | + * Checks the external API and, if confirmed, marks the AtCoderAccount as validated. |
| 56 | + * @returns true if validation succeeded, false otherwise. |
| 57 | + */ |
| 58 | +export async function validate(username: string): Promise<boolean> { |
| 59 | + const user = await db.user.findUniqueOrThrow({ |
| 60 | + where: { username }, |
| 61 | + include: { atCoderAccount: true }, |
| 62 | + }); |
| 63 | + |
| 64 | + if (!user.atCoderAccount) { |
| 65 | + return false; |
| 66 | + } |
| 67 | + |
| 68 | + if (!user.atCoderAccount.validationCode) { |
| 69 | + return false; |
| 70 | + } |
| 71 | + |
| 72 | + let confirmed: boolean; |
| 73 | + |
| 74 | + try { |
| 75 | + confirmed = await confirmWithExternalApi( |
| 76 | + user.atCoderAccount.handle, |
| 77 | + user.atCoderAccount.validationCode, |
| 78 | + ); |
| 79 | + } catch (error) { |
| 80 | + throw new Error(`Failed to confirm AtCoder affiliation for ${username}: ${error}`); |
| 81 | + } |
| 82 | + |
| 83 | + if (!confirmed) { |
| 84 | + return false; |
| 85 | + } |
| 86 | + |
| 87 | + await db.atCoderAccount.update({ |
| 88 | + where: { userId: user.id }, |
| 89 | + data: { validationCode: '', isValidated: true }, |
| 90 | + }); |
| 91 | + |
| 92 | + return true; |
| 93 | +} |
| 94 | + |
| 95 | +/** Deletes the AtCoderAccount record, effectively resetting the verification state. */ |
| 96 | +export async function reset(username: string): Promise<void> { |
| 97 | + const user = await db.user.findUniqueOrThrow({ where: { username } }); |
| 98 | + await db.atCoderAccount.deleteMany({ where: { userId: user.id } }); |
| 99 | +} |
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