Timerix/ParadoxSaveParser
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implemented parser

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Timerix
2025-03-22 14:40:57 +05:00
parent 0e122adcff
commit 05972fa40f
6 changed files with 244 additions and 68 deletions
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ParadoxSaveParser.WebAPI/Program.cs
+70 -32
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@@ -5,7 +5,9 @@ global using System.Threading.Tasks;
global using DTLib.Demystifier;
global using ParadoxSaveParser.Lib;
using System.Collections.Concurrent;
using System.IO.Compression;
using System.Linq;
using System.Text;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Logging;
@@ -39,30 +41,12 @@ public class Program
_app.UseHttpsRedirection();
_app.MapGet("/getSaveStatus", GetSaveStatusHandler);
_app.MapPost("/uploadSave/eu4", UploadSaveHandler);
_app.MapPost("/parseSave/eu4", ParseSaveEU4Handler);
_app.Run();
}
private static async Task GetSaveStatusHandler(HttpContext httpContext)
{
httpContext.Request.Query.TryGetValue("id", out var ids);
string? id = ids.FirstOrDefault();
if (string.IsNullOrEmpty(id))
{
throw new BadHttpRequestException("No id provided",
StatusCodes.Status400BadRequest);
}
if (!_saveMetadataStorage.TryGetValue(id, out var meta))
{
throw new BadHttpRequestException($"Save with {id} not found",
StatusCodes.Status400BadRequest);
}
await httpContext.Response.WriteAsJsonAsync(meta);
}
private static async Task ParseSaveEU4Handler(HttpContext httpContext)
private static async Task UploadSaveHandler(HttpContext httpContext)
{
var remoteFile = httpContext.Request.Form.Files.FirstOrDefault();
if (remoteFile is null || !remoteFile.FileName.EndsWith(".eu4"))
@@ -84,22 +68,75 @@ public class Program
{
throw new BadHttpRequestException($"Guid collision! Can't create metadata with id {saveId}", StatusCodes.Status500InternalServerError);
}
meta.status = SaveFileProcessingStatus.Uploading;
string saveFilePath = PathHelper.GetSaveFilePath(meta.id);
await using var saveFile = File.Open(saveFilePath, FileMode.CreateNew, FileAccess.ReadWrite);
await using var remoteStream = remoteFile.OpenReadStream();
await remoteStream.CopyToAsync(saveFile);
meta.status = SaveFileProcessingStatus.Uploaded;
await httpContext.Response.WriteAsJsonAsync(meta);
}
private static SaveFileMetadata GetMetaFromRequestId(HttpContext httpContext, string requestParamName)
{
httpContext.Request.Query.TryGetValue(requestParamName, out var ids);
string? id = ids.FirstOrDefault();
if (string.IsNullOrEmpty(id))
{
throw new BadHttpRequestException($"No request parameter '{requestParamName}' provided",
StatusCodes.Status400BadRequest);
}
if (!_saveMetadataStorage.TryGetValue(id, out var meta))
{
throw new BadHttpRequestException($"Save with {id} not found",
StatusCodes.Status400BadRequest);
}
return meta;
}
private static async Task GetSaveStatusHandler(HttpContext httpContext)
{
var meta = GetMetaFromRequestId(httpContext, "id");
await httpContext.Response.WriteAsJsonAsync(meta);
}
private static async Task ParseSaveEU4Handler(HttpContext httpContext)
{
var meta = GetMetaFromRequestId(httpContext, "id");
if (meta.status == SaveFileProcessingStatus.Error)
{
httpContext.Response.StatusCode = StatusCodes.Status500InternalServerError;
await httpContext.Response.WriteAsJsonAsync(meta);
return;
}
try
{
meta.status = SaveFileProcessingStatus.Uploading;
string saveFilePath = PathHelper.GetEU4SaveFilePath(meta.id);
await using var saveFile = File.Open(saveFilePath, FileMode.CreateNew, FileAccess.ReadWrite);
await using (var remoteStream = remoteFile.OpenReadStream())
{
await Task.Delay(50000);
await remoteStream.CopyToAsync(saveFile);
}
if(meta.status != SaveFileProcessingStatus.Uploaded)
throw new Exception($"Invalid save processing status: {meta.status}");
using var zipArchive = ZipFile.Open(PathHelper.GetSaveFilePath(meta.id), ZipArchiveMode.Read);
var zipEntry = zipArchive.Entries.FirstOrDefault(e => e.Name == "gamestate");
if(zipEntry is null)
throw new Exception("Invalid save format: no gamestate file found");
string extractedGamestatePath = PathHelper.GetSaveFilePath(meta.id) + ".gamestate";
zipEntry.ExtractToFile(extractedGamestatePath);
var gamestateStream = File.Open(extractedGamestatePath, FileMode.Open, FileAccess.Read);
meta.status = SaveFileProcessingStatus.Parsing;
saveFile.Seek(0, SeekOrigin.Begin);
var parser = new ParserEU4(saveFile);
string expectedHeader = "EU4txt";
byte[] headBytes = new byte[expectedHeader.Length];
gamestateStream.ReadExactly(headBytes);
string headStr = Encoding.UTF8.GetString(headBytes);
if(headStr != expectedHeader)
throw new Exception($"Invalid gamestate header: '{headStr}'");
var parser = new Parser(gamestateStream);
var result = parser.Parse();
meta.status = SaveFileProcessingStatus.SavingResults;
string resultFilePath = PathHelper.GetParsedSaveFilePath(meta.id);
await using var resultFile = File.Open(resultFilePath, FileMode.CreateNew, FileAccess.Write);
@@ -112,7 +149,8 @@ public class Program
meta.status = SaveFileProcessingStatus.Error;
string errorMesage = ex.ToStringDemystified();
meta.errorMesage = errorMesage;
_app.Logger.Log(LogLevel.Error, "EU4SaveParse Error: {errorMesage}", errorMesage);
httpContext.Response.StatusCode = StatusCodes.Status500InternalServerError;
_app.Logger.Log(LogLevel.Error, "ParseSaveEU4 Error: {errorMesage}", errorMesage);
}
await httpContext.Response.WriteAsJsonAsync(meta);