PaySwitch - Salary Converter
Level 4
10 Points
PaySwitch - Salary Converter
Problem Statement
A company called Insure Everyone is paying its employees in foreign currencies. But, due to legislative requirements, the salary must be converted to the local currency. Its employees are located around the world. Insure Everyone's HR department is seeking help from a talented developer to build a program to convert each employee's salary to their corresponding local currency. Insure Everyone relies on exchange rates provided by an external API.
Given the external exchange rate API, you need to write a function that takes a source currency, salary (in source currency), and the employee's local currency that will return the salary in local currency.
Currency Exchange API
The response from the external currency exchange API is given below:
Note: that the
ratesare truncated to keep the problem statement short
{
"base": "EUR",
"rates": {
"AED": 4.167972,
"AFN": 118.91123,
"ALL": 121.353306,
"AMD": 546.175542,
"ANG": 2.035384,
"AOA": 629.106987,
"ARS": 116.624363,
"AUD": 1.580224,
"AWG": 2.042846,
"AZN": 1.92923,
"BAM": 1.95468,
"BBD": 2.26981,
"BDT": 97.024176,
"BGN": 1.956957,
"BHD": 0.428175,
"BIF": 2257.462616,
"BMD": 1.134504,
"BND": 1.534691,
"BOB": 7.773946,
"BRL": 6.394753,
"BSD": 1.134916,
"BTC": 0.000027,
"BTN": 83.896824,
"BWP": 13.167125,
}
}An example request to get exchange rates for USD:
GET http://localhost:8080/rates/USD
{
"base": "USD",
"rates": {
"AED": 3.672477643818380310171368756063197,
"AFN": 104.7748962262571579872079201988508,
"ALL": 106.9266548068103418652047146893925,
"AMD": 481.2454276553169780099231576470961,
"ANG": 1.793414695824643301163693331958788,
"AOA": 554.3178661774696212335484143830275,
"ARS": 102.7598951821316197338845611280433,
"AUD": 1.392364754903645275750470737610812,
"AWG": 1.799989602800547350872880138793802,
"AZN": 1.699880432206294535038121596128717,
"BAM": 1.722304900517304728699178180683942,
"BBD": 1.999971804204874171858658003508614,
"BDT": 85.48980589838411660371074286227852,
"BGN": 1.724311207564226937381544618524109,
"BHD": 0.3772729555625457630971671155965922,
"BIF": 1989.092294529751410010035940827599,
"BMD": 0.9996325735447665520331371082216295
// omitted
}
}Constraints
- 500 <=
salary<= 10000 sourceCurrencyandtargetCurrencyare ISO currency codes (alphabetic). Test input may contain invalid currency codes.- The accuracy of the returned rate will be measured up to
5decimal points.
Definition
You have to write your code inside the following function.
# The exchange rate API base URL
configurable string apiUrl = "http://localhost:8080";
# Convert provided salary to local currency.
#
# + salary - Salary in source currency
# + sourceCurrency - Soruce currency
# + localCurrency - Employee's local currency
# + return - Salary in local currency or error
public function convertSalary(decimal salary, string sourceCurrency, string localCurrency) returns decimal|error {
// TODO: Write your code here
return 0;
}Test Environment
- You can either test it manually by running the project with
bal runor by writing unit tests and running them withbal test. The backend service will start automatically athttp://localhost:8080
Example
Example 1
Input:
- Salary: 1000
- Source Currency: USD
- Target Currency: GBP
Output:
Assuming the external currency exchange returned the following conversion rates response (omitted):
{
"base": "USD",
"rates": {
// omitted
"GBP": 0.73584,
// omitted
}
}The function must return 735.84000
Example 2
Input:
- Salary: 1000
- Source Currency: GBP
- Target Currency: USD
Output:
Assuming the external currency exchange returned following conversion rates response (omitted):
{
"base": "GBP",
"rates": {
// omitted
"USD": 1.35898,
// omitted
}
}The function must return 1358.9800
Hints
- You can convert the JSON response received to a user-defined type (more specifically an open record) for easy access. See http client data binding for more information
PaySwitch - Salary Converter
Level 4
10 Points
PaySwitch - Salary Converter
Problem Statement
A company called Insure Everyone is paying its employees in foreign currencies. But, due to legislative requirements, the salary must be converted to the local currency. Its employees are located around the world. Insure Everyone's HR department is seeking help from a talented developer to build a program to convert each employee's salary to their corresponding local currency. Insure Everyone relies on exchange rates provided by an external API.
Given the external exchange rate API, you need to write a function that takes a source currency, salary (in source currency), and the employee's local currency that will return the salary in local currency.
Currency Exchange API
The response from the external currency exchange API is given below:
Note: that the
ratesare truncated to keep the problem statement short
{
"base": "EUR",
"rates": {
"AED": 4.167972,
"AFN": 118.91123,
"ALL": 121.353306,
"AMD": 546.175542,
"ANG": 2.035384,
"AOA": 629.106987,
"ARS": 116.624363,
"AUD": 1.580224,
"AWG": 2.042846,
"AZN": 1.92923,
"BAM": 1.95468,
"BBD": 2.26981,
"BDT": 97.024176,
"BGN": 1.956957,
"BHD": 0.428175,
"BIF": 2257.462616,
"BMD": 1.134504,
"BND": 1.534691,
"BOB": 7.773946,
"BRL": 6.394753,
"BSD": 1.134916,
"BTC": 0.000027,
"BTN": 83.896824,
"BWP": 13.167125,
}
}An example request to get exchange rates for USD:
GET http://localhost:8080/rates/USD
{
"base": "USD",
"rates": {
"AED": 3.672477643818380310171368756063197,
"AFN": 104.7748962262571579872079201988508,
"ALL": 106.9266548068103418652047146893925,
"AMD": 481.2454276553169780099231576470961,
"ANG": 1.793414695824643301163693331958788,
"AOA": 554.3178661774696212335484143830275,
"ARS": 102.7598951821316197338845611280433,
"AUD": 1.392364754903645275750470737610812,
"AWG": 1.799989602800547350872880138793802,
"AZN": 1.699880432206294535038121596128717,
"BAM": 1.722304900517304728699178180683942,
"BBD": 1.999971804204874171858658003508614,
"BDT": 85.48980589838411660371074286227852,
"BGN": 1.724311207564226937381544618524109,
"BHD": 0.3772729555625457630971671155965922,
"BIF": 1989.092294529751410010035940827599,
"BMD": 0.9996325735447665520331371082216295
// omitted
}
}Constraints
- 500 <=
salary<= 10000 sourceCurrencyandtargetCurrencyare ISO currency codes (alphabetic). Test input may contain invalid currency codes.- The accuracy of the returned rate will be measured up to
5decimal points.
Definition
You have to write your code inside the following function.
# The exchange rate API base URL
configurable string apiUrl = "http://localhost:8080";
# Convert provided salary to local currency.
#
# + salary - Salary in source currency
# + sourceCurrency - Soruce currency
# + localCurrency - Employee's local currency
# + return - Salary in local currency or error
public function convertSalary(decimal salary, string sourceCurrency, string localCurrency) returns decimal|error {
// TODO: Write your code here
return 0;
}Test Environment
- You can either test it manually by running the project with
bal runor by writing unit tests and running them withbal test. The backend service will start automatically athttp://localhost:8080
Example
Example 1
Input:
- Salary: 1000
- Source Currency: USD
- Target Currency: GBP
Output:
Assuming the external currency exchange returned the following conversion rates response (omitted):
{
"base": "USD",
"rates": {
// omitted
"GBP": 0.73584,
// omitted
}
}The function must return 735.84000
Example 2
Input:
- Salary: 1000
- Source Currency: GBP
- Target Currency: USD
Output:
Assuming the external currency exchange returned following conversion rates response (omitted):
{
"base": "GBP",
"rates": {
// omitted
"USD": 1.35898,
// omitted
}
}The function must return 1358.9800
Hints
- You can convert the JSON response received to a user-defined type (more specifically an open record) for easy access. See http client data binding for more information