piral-configs/lib/create.js

Plugin for dynamic configurations of pilets in Piral.

import { Validator } from 'jsonschema';
export function createConfigsApi(config = {}) {
    const readConfig = (name, defaultConfig) => {
        const key = `config-${name}`;
        const current = config.retrieve?.(key);
        if (typeof current === 'object') {
            return {
                ...defaultConfig,
                ...current,
            };
        }
        else if (typeof current !== 'undefined') {
            return current;
        }
        else {
            return undefined;
        }
    };
    const validate = (schema, proposedConfig, defaultConfig) => {
        const validator = new Validator();
        const result = validator.validate(proposedConfig, schema);
        if (!result.valid) {
            console.warn(`The given configuration does not match the provided schema. Taking the default configuration.`, proposedConfig, result);
            return defaultConfig;
        }
        return proposedConfig;
    };
    return (ctx) => (_, meta) => ({
        defineConfigSchema(schema, defaultConfig) {
            const proposedConfig = readConfig(meta.name, defaultConfig);
            const current = proposedConfig ? validate(schema, proposedConfig, defaultConfig) : defaultConfig;
            ctx.dispatch((state) => ({
                ...state,
                configs: {
                    ...state.configs,
                    [meta.name]: current,
                },
            }));
            return current;
        },
        getCurrentConfig() {
            return ctx.readState((s) => s.configs[meta.name]) ?? {};
        },
    });
}
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