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57a889c | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 | import semver from 'semver';
import { isAddonEnabled } from '../services/adminService.js';
import type { NoticeCondition, SystemNotice } from './types.js';
interface ConditionContext {
user: { login_count: number; first_seen_version: string; role: string; noTrips: number };
currentAppVersion: string;
now: Date;
}
// Custom predicate registry — extensible without modifying this file
const customPredicates = new Map<string, (ctx: ConditionContext) => boolean>();
export function registerPredicate(id: string, fn: (ctx: ConditionContext) => boolean): void {
customPredicates.set(id, fn);
}
function evaluateOne(condition: NoticeCondition, ctx: ConditionContext): boolean {
switch (condition.kind) {
case 'always':
return true;
case 'firstLogin':
// login_count is incremented during login, so on the FIRST post-login fetch it's 1.
return ctx.user.login_count <= 1;
case 'noTrips':
return ctx.user.noTrips === 0;
case 'existingUserBeforeVersion': {
// Show to users who existed BEFORE this version was released.
// Backfilled users have first_seen_version='0.0.0', so all pass semver.lt.
const userVersion = semver.valid(ctx.user.first_seen_version) ?? '0.0.0';
const noticeVersion = semver.valid(condition.version);
if (!noticeVersion) return false;
// Strip prerelease/build metadata so '3.0.0-pre.42' is treated as '3.0.0'.
const appVersion = semver.coerce(ctx.currentAppVersion)?.version ?? '0.0.0';
return (
semver.lt(userVersion, noticeVersion) &&
semver.gte(appVersion, noticeVersion)
);
}
case 'dateWindow': {
const start = new Date(condition.startsAt);
const end = condition.endsAt ? new Date(condition.endsAt) : null;
return ctx.now >= start && (end === null || ctx.now <= end);
}
case 'role':
return condition.roles.includes(ctx.user.role as 'admin' | 'user');
case 'addonEnabled':
return isAddonEnabled(condition.addonId);
case 'custom': {
const fn = customPredicates.get(condition.id);
if (!fn) {
console.warn(`[systemNotices] unknown custom predicate: "${condition.id}"`);
return false;
}
return fn(ctx);
}
default:
return false;
}
}
/** Returns true only if ALL conditions pass (AND logic). */
export function evaluate(notice: SystemNotice, ctx: ConditionContext): boolean {
return notice.conditions.every(c => evaluateOne(c, ctx));
}
export type { ConditionContext };
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