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import { isNothing, isSome } from "@jet/environment/types/optional";
/**
* An object which allows buy parameters to be operated on like a hash map.
*/
export class BuyParameters {
/**
* Create a buy parameters object with an optional string representation.
*
* @param buyParams A string containing buy parameters.
*/
constructor(buyParams) {
this._values = {};
if (isSome(buyParams) && buyParams.length > 0) {
const pairs = buyParams.split("&");
for (const pair of pairs) {
const [encodedKey, encodedValue] = pair.split("=");
const key = decodeURIComponent(encodedKey);
const value = isNothing(encodedValue) ? "" : decodeURIComponent(encodedValue);
this._values[key] = value;
}
}
}
/**
* Determine the search key to use for the given parameters.
*
* @param key The key to determine the search value for.
* @param prefix An optional prefix to prepend to `key`.
* @returns A key which can be used to store and retrieve
* values in this buy parameters object.
*/
_searchKey(key, prefix) {
if (key.length === 0) {
throw new Error("key may not be zero length");
}
if (isNothing(prefix) || prefix.length === 0) {
return key;
}
else {
return `${prefix}${key.charAt(0).toUpperCase()}${key.slice(1)}`;
}
}
/**
* Returns the value associated with a given key.
*
* @param key The key to retrieve the associated value for.
* @param keyPrefix The prefix to add to the key. Defaults to `mt`.
* @returns The value associated with `key`, or `undefined` is none is found.
*/
get(key, keyPrefix = "mt") {
const searchKey = this._searchKey(key, keyPrefix);
return this._values[searchKey];
}
/**
* Add a given key-value pair to this buy parameters.
*
* If a value was previously associated with `key`,
* it will be replaced with `value`.
*
* @param key The key to associate `value` with in these buy parameters.
* @param value The value to add to the buy parameters. If value is `undefined`
* or `null`, any values previously associated with `key` will be removed.
* @param keyPrefix The prefix to add to the key. Defaults to `mt`.
* @returns `this`
*/
set(key, value, keyPrefix = "mt") {
const searchKey = this._searchKey(key, keyPrefix);
if (isNothing(value)) {
delete this._values[searchKey];
}
else {
this._values[searchKey] = value;
}
return this;
}
/**
* Convert this buy parameters to its string representation.
*/
toString() {
let buyParams = "";
for (const key of Object.keys(this._values)) {
const value = this._values[key];
if (buyParams.length > 0) {
buyParams += "&";
}
buyParams += encodeURIComponent(key);
buyParams += "=";
buyParams += encodeURIComponent(value);
}
return buyParams;
}
/**
* Convert the buy params into a map representation, in which
* the keys and values are encoded.
*/
toEncodedMap() {
const map = {};
for (const key of Object.keys(this._values)) {
const value = this._values[key];
const encodedKey = encodeURIComponent(key);
const encodedValue = encodeURIComponent(value);
map[encodedKey] = encodedValue;
}
return map;
}
/**
* Buy params in a raw (non url encoded) map representation.
*/
toRawMap() {
return { ...this._values };
}
}
//# sourceMappingURL=buy-parameters.js.map
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