private string GetDownloadURL(DateTime time, eSAType type)
{
string targetTimeStr = time.ToString("HHmmss");
string targetYearStr = time.ToString("yyyy");
string targetMonthStr = time.ToString("MM");
string targetDayStr = time.ToString("dd");
string resultURL = string.Format(FORMAT_SAT_IMG_URL, CONST_STR_LEVEL, CONST_INT_WIDTH, targetYearStr, targetMonthStr, targetDayStr, targetTimeStr);
return(resultURL);
}
/// <summary>
/// 위성 배경사진 다운로드 후 저장까지 해주는 함수
/// </summary>
/// <param name="time">대상 시간 (UTC 필수)</param>
/// <param name="type">위성 종류</param>
/// <returns></returns>
public string DownloadSATWallpaper(DateTime time, eSAType type)
{
onProgressDownload?.Invoke(eProgress.START, true);
string resultFilePath = "";
DateTime targetTime = time.AddSeconds(-time.Second).AddMinutes(-30).AddMinutes(-(time.Minute % 10));
string targetURL = "";
// 파일이 정확히 있나 없나 테스트
do
{
targetURL = GetDownloadURL(targetTime, type);
string testUrl = targetURL + "_0_0.png"; //string.Format(FORMAT_SAT_IMG_URL, CONST_STR_LEVEL, CONST_INT_WIDTH, targetYearStr, targetMonthStr, targetDayStr, targetTimeStr);
bool testResult = false;
try
{
WebRequest request = WebRequest.Create(testUrl);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
HttpStatusCode httpStatus = response.StatusCode;
if (httpStatus == HttpStatusCode.OK)
{
testResult = true;
onProgressDownload?.Invoke(eProgress.CONNECT, true);
}
response.Close();
}
catch
{
testResult = false;
}
if (testResult)
{
break;
}
else
{
targetTime = targetTime.AddHours(-1);
}
} while (true);
string saveFileName = "latest.png";
string saveFolderPath = Environment.GetFolderPath(Environment.SpecialFolder.MyPictures) + "\\Himawari8\\";
if (!Directory.Exists(saveFolderPath))
{
Directory.CreateDirectory(saveFolderPath);
}
//저장 경로
resultFilePath = saveFolderPath + saveFileName;
Bitmap image = new Bitmap(CONST_INT_WIDTH * CONST_INT_NUM_BLOCKS, CONST_INT_WIDTH * CONST_INT_NUM_BLOCKS);
Graphics graphics = Graphics.FromImage(image);
graphics.Clear(Color.Black);
for (int i = 0; i < CONST_INT_NUM_BLOCKS; ++i)
{
for (int j = 0; j < CONST_INT_NUM_BLOCKS; ++j)
{
string partImageURL = string.Format("{0}_{1}_{2}.png", targetURL, i, j);
//Console.WriteLine("Downloading: " + partImageURL);
try
{
WebRequest request = WebRequest.Create(partImageURL);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
HttpStatusCode httpStatus = response.StatusCode;
if (httpStatus == HttpStatusCode.OK)
{
Image imgblock = Image.FromStream(response.GetResponseStream());
graphics.DrawImage(imgblock, i * CONST_INT_WIDTH, j * CONST_INT_WIDTH, CONST_INT_WIDTH, CONST_INT_WIDTH);
imgblock.Dispose();
response.Close();
onProgressDownload?.Invoke(eProgress.WRITE_IMAGE, true);
}
}
catch (Exception e)
{
string errorMsg = string.Format("Failed! {0}", e.Message);
}
}
}
//이미지 코덱 지정
ImageCodecInfo pngCodecInfo = null;
ImageCodecInfo[] encodersArray = ImageCodecInfo.GetImageEncoders();
for (int i = 0; i < encodersArray.Length; i++)
{
if (encodersArray[i].MimeType == "image/png")
{
pngCodecInfo = encodersArray[i];
break;
}
}
EncoderParameters encoderParams = new EncoderParameters(1);
encoderParams.Param[0] = new EncoderParameter(Encoder.Quality, 90L);
if (pngCodecInfo != null)
{
image.Save(resultFilePath, pngCodecInfo, encoderParams);
onProgressDownload?.Invoke(eProgress.SAVE_IMAGE, true);
}
else
{
//실패 했으니 저장 패스 빈 값으로 처리해서 문제가 있음을 알린다
resultFilePath = "";
}
onProgressDownload?.Invoke(eProgress.COMPLETE, true);
return(resultFilePath);
}
