public async Task <List <PlanetModel> > GetAllPlanetsAsync()
{
StringBuilder url = new StringBuilder();
//base address https://swapi.co/api/
url.Append(ApiHelper.ApiClient.BaseAddress.ToString());
url.Append("planets");
using (HttpResponseMessage response = await ApiHelper.ApiClient.GetAsync(url.ToString()))
{
if (response.IsSuccessStatusCode)
{
List <PlanetModel> planets = new List <PlanetModel>();
//get first page of planets
string responseString = await response.Content.ReadAsStringAsync();
JObject results = JsonConvert.DeserializeObject <JObject>(responseString);
planets.AddRange(
results.Value <JArray>("results")
.ToObject <List <PlanetModel> >());
string next = results.GetValue("next").Value <string>();
//fetch the rest of the planet pages
while (!string.IsNullOrWhiteSpace(next) && next != "null")
{
PlanetResponseModel planetResponse = await GetPlanetPageAsync(next);
next = planetResponse.ResponseNext;
planets.AddRange(planetResponse.planets);
}
return(planets);
}
else
{
throw new Exception(response.ReasonPhrase);
}
}
}
public async Task <PlanetResponseModel> GetPlanetPageAsync(string url)
{
using (HttpResponseMessage response = await ApiHelper.ApiClient.GetAsync(url.ToString()))
{
if (response.IsSuccessStatusCode)
{
PlanetResponseModel planetResponse = new PlanetResponseModel();
string responseString = await response.Content.ReadAsStringAsync();
JObject results = JsonConvert.DeserializeObject <JObject>(responseString);
planetResponse.planets.AddRange(
results.Value <JArray>("results")
.ToObject <List <PlanetModel> >());
planetResponse.ResponseNext = results.GetValue("next").Value <string>();
return(planetResponse);
}
else
{
throw new Exception(response.ReasonPhrase);
}
}
}
