import * as yaml from 'yaml'
import * as fs from 'fs'
import * as path from 'path'
import * as globby from 'globby'

export async function loadConfigurationFromGlob(cwd: string, glob: string[]): Promise<any> {
    const files = await globby(glob, {
        cwd,
        absolute: true,
        onlyFiles: true,
    });
    // Merge configs at the first level so they don't overwrite
    const result: any = {}
    for (const file of files) {
        const config: any = loadConfigurationFromFile(file)
        merge(result, config)
    }
    return result
}

export function merge(result: any, config: any) {
    for (const key in config) {
        result[key] = {
            ...result[key],
            ...config[key],
        }
    }
}

function loadConfigurationFromFile(file: string): any {
    // console.log('loadConfigurationFromFile', file)
    const content = fs.readFileSync(path.join(file), 'utf8')
    if (file.match('\.ya?ml$')) {
        return yaml.parse(content)
    }
    return JSON.parse(content)
}