public static async Task InitLoaderAndCopyToAsync()

in src/dotnet/ReSharperPlugin.DotNetDisassembler/JitDisasm/LoaderAppManager.cs [28:90]
51 lines of code
12 McCabe index (conditional complexity)

    public static async Task InitLoaderAndCopyToAsync(string dotnetCliExePath, string tf, string dest, Action<string> logger, Version addinVersion, CancellationToken ct)
    {
        if (!Directory.Exists(dest))
            throw new InvalidOperationException($"ERROR: dest dir was not found: {dest}");

        string dir;
        try
        {
            logger("Getting SDK version...");
            dir = await GetPathToLoaderAsync(dotnetCliExePath, tf, addinVersion, ct);
        }
        catch (Exception exc)
        {
            throw new InvalidOperationException("ERROR in LoaderAppManager.GetPathToLoader: " + exc);
        }

        string csproj = Path.Combine(dir, $"{JitDisasmLoaderName}.csproj");
        string csfile = Path.Combine(dir, $"{JitDisasmLoaderName}.cs");
        string outDll = Path.Combine(dir, "out", $"{JitDisasmLoaderName}.dll");
        string outJson = Path.Combine(dir, "out", $"{JitDisasmLoaderName}.runtimeconfig.json");
        string outDllDest = Path.Combine(dest, JitDisasmLoaderName + ".dll");
        string outJsonDest = Path.Combine(dest, JitDisasmLoaderName + ".runtimeconfig.json");

        if (File.Exists(outDllDest) && File.Exists(outJsonDest))
        {
            return;
        }

        if (!Directory.Exists(dir))
        {
            Directory.CreateDirectory(dir);
        }
        else if (File.Exists(outDll) && File.Exists(outJson))
        {
            File.Copy(outDll, outDllDest, true);
            File.Copy(outJson, outJsonDest, true);
            return;
        }

        logger($"Building '{JitDisasmLoaderName}' project...");
        ct.ThrowIfCancellationRequested();

        if (!File.Exists(csfile))
            TextUtils.SaveEmbeddedResourceTo($"{JitDisasmLoaderName}.cs_template", dir);

        if (!File.Exists(csproj))
            TextUtils.SaveEmbeddedResourceTo($"{JitDisasmLoaderName}.csproj_template", dir, content => content.Replace("%tfm%", tf));

        Debug.Assert(File.Exists(csfile));
        Debug.Assert(File.Exists(csproj));

        ct.ThrowIfCancellationRequested();

        var msg = await ProcessUtils.RunProcessAsync(dotnetCliExePath, "build -c Release", workingDir: dir, cancellationToken: ct);

        if (!File.Exists(outDll) || !File.Exists(outJson))
            throw new InvalidOperationException($"ERROR: 'dotnet build' did not produce expected binaries ('{outDll}'" +
                                                $" and '{outJson}'):\n{msg.Output}\n\n{msg.Error}");

        ct.ThrowIfCancellationRequested();
        File.Copy(outDll, outDllDest, true);
        File.Copy(outJson, outJsonDest, true);
    }