spacebar/util/src/util/Config.ts
2021-10-09 17:33:28 +02:00

68 lines
1.5 KiB
TypeScript

import "missing-native-js-functions";
import { ConfigValue, ConfigEntity, DefaultConfigOptions } from "../entities/Config";
var config: ConfigValue;
var pairs: ConfigEntity[];
// TODO: use events to inform about config updates
// Config keys are separated with _
export const Config = {
init: async function init() {
if (config) return config;
pairs = await ConfigEntity.find();
config = pairsToConfig(pairs);
return this.set((config || {}).merge(DefaultConfigOptions));
},
get: function get() {
return config;
},
set: function set(val: Partial<ConfigValue>) {
if (!config || !val) return;
config = val.merge(config);
return applyConfig(config);
},
};
function applyConfig(val: ConfigValue) {
async function apply(obj: any, key = ""): Promise<any> {
if (typeof obj === "object" && obj !== null)
return Promise.all(Object.keys(obj).map((k) => apply(obj[k], key ? `${key}_${k}` : k)));
let pair = pairs.find((x) => x.key === key);
if (!pair) pair = new ConfigEntity();
pair.key = key;
pair.value = obj;
return pair.save();
}
return apply(val);
}
function pairsToConfig(pairs: ConfigEntity[]) {
var value: any = {};
pairs.forEach((p) => {
const keys = p.key.split("_");
let obj = value;
let prev = "";
let prevObj = obj;
let i = 0;
for (const key of keys) {
if (!isNaN(Number(key)) && !prevObj[prev]?.length) prevObj[prev] = obj = [];
if (i++ === keys.length - 1) obj[key] = p.value;
else if (!obj[key]) obj[key] = {};
prev = key;
prevObj = obj;
obj = obj[key];
}
});
return value as ConfigValue;
}