const { replacementRegex, replaceInObject } = require('./shared')

class RequestCache {
    constructor() {
        this.$cache = {}
    }

    exists(key) {
        return typeof this.$cache[key] !== 'undefined'
    }

    add(key, value) {
        this.$cache[key] = value
    }

    get(path) {
        let result = this.$cache
        path.split('.').forEach((part) => {
            if (result[part] === undefined) {
                throw new Error(`${path} not found in cache.`)
            }

            result = result[part]
        })

        return result
    }

    parse(item) {
        if (item === null) {
            return null
        }

        return replaceInObject(item, (item) =>
            item.replace(replacementRegex, (match, key) => {
                if (match.startsWith('\\')) {
                    return match.replace('\\$', '$')
                }

                return this.get(key)
            })
        )
    }
}

module.exports = RequestCache