89 lines
1.9 KiB
TypeScript
89 lines
1.9 KiB
TypeScript
import {
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type LevelName,
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LogLevels,
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} from "https://deno.land/std@0.159.0/log/mod.ts";
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export interface LogConfig {
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consoleLevelName: LevelName;
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}
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export interface PostgresConfig {
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url: string;
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}
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export interface MailgunConfig {
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apiKey?: string;
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domain?: string;
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}
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export interface Config {
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log: LogConfig;
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postgres: PostgresConfig;
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mailgun: MailgunConfig;
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isDevelopmentMode: boolean;
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}
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function truthyEnv(key: string): boolean {
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return (Deno.env.get(key) || "").toString().toLowerCase().trim() in
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["true", "1"];
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}
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function isLogLevelName(s: string): s is LevelName {
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return s in LogLevels;
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}
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export let config: Readonly<Config>;
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type Logger = { warning: (s: string, ...opts: unknown[]) => void };
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export function setAll(newConfig: Config) {
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config = newConfig;
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}
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export function reload(): [
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Config,
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((logger: Logger) => void)[],
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] {
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// since we want configuration to be setup before any logging, lets save logs here until the logger is setup
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const logCalls = [];
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const envOrWarn = (key: string, fallback: string): string => {
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const val = Deno.env.get(key);
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if (!val) {
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logCalls.push((logger: Logger) =>
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logger.warning(`${key} is not set! Using fallback: ${fallback}`)
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);
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}
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return val || fallback;
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};
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const desiredLogLevel = envOrWarn("LOG_LEVEL", "INFO").toUpperCase();
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if (!isLogLevelName(desiredLogLevel)) {
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logCalls.push((logger: Logger) =>
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logger.warning(
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`Specified LOG_LEVEL '${desiredLogLevel}' is invalid. Falling back to INFO`,
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)
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);
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}
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const logLevel: LevelName = isLogLevelName(desiredLogLevel)
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? desiredLogLevel
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: "INFO";
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const config: Config = {
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log: {
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consoleLevelName: logLevel,
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},
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postgres: {
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url: envOrWarn(
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"POSTGRES_URL",
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"postgresql://postgres:@127.0.0.1:5432/lyricscreen",
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),
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},
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mailgun: {},
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isDevelopmentMode: truthyEnv("DEVELOPMENT_MODE"),
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};
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return [config, logCalls];
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}
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