Implemented importing and exporting of stars

MoonlightServers.ApiServer/Services/StarImportExportService.cs

@@ -0,0 +1,156 @@
+using System.Text.Json;
+using Microsoft.EntityFrameworkCore;
+using MoonCore.Attributes;
+using MoonCore.Exceptions;
+using MoonCore.Extended.Abstractions;
+using MoonlightServers.ApiServer.Database.Entities;
+using MoonlightServers.ApiServer.Models.Stars;
+
+namespace MoonlightServers.ApiServer.Services;
+
+[Scoped]
+public class StarImportExportService
+{
+    private readonly DatabaseRepository<Star> StarRepository;
+    private readonly ILogger<StarImportExportService> Logger;
+
+    public StarImportExportService(DatabaseRepository<Star> starRepository, ILogger<StarImportExportService> logger)
+    {
+        StarRepository = starRepository;
+        Logger = logger;
+    }
+
+    public async Task<string> Export(int id)
+    {
+        var star = StarRepository
+            .Get()
+            .Include(x => x.DockerImages)
+            .Include(x => x.Variables)
+            .FirstOrDefault(x => x.Id == id);
+
+        if (star == null)
+            throw new HttpApiException("No star with this id found", 404);
+
+        var exportModel = new StarExportModel()
+        {
+            Name = star.Name,
+            Author = star.Author,
+            Version = star.Version,
+            DonateUrl = star.DonateUrl,
+            UpdateUrl = star.UpdateUrl,
+            InstallScript = star.InstallScript,
+            InstallShell = star.InstallShell,
+            InstallDockerImage = star.InstallDockerImage,
+            OnlineDetection = star.OnlineDetection,
+            StopCommand = star.StopCommand,
+            StartupCommand = star.StartupCommand,
+            ParseConfiguration = star.ParseConfiguration,
+            RequiredAllocations = star.RequiredAllocations,
+            AllowDockerImageChange = star.AllowDockerImageChange,
+            Variables = star.Variables.Select(x => new StarExportModel.StarVariableExportModel()
+            {
+                Name = x.Name,
+                Type = x.Type,
+                Description = x.Description,
+                Filter = x.Filter,
+                Key = x.Key,
+                AllowEditing = x.AllowEditing,
+                AllowViewing = x.AllowViewing,
+                DefaultValue = x.DefaultValue
+            }).ToArray(),
+            DockerImages = star.DockerImages.Select(x => new StarExportModel.StarDockerImageExportModel()
+            {
+                Identifier = x.Identifier,
+                AutoPulling = x.AutoPulling,
+                DisplayName = x.DisplayName
+            }).ToArray()
+        };
+
+        var json = JsonSerializer.Serialize(exportModel, new JsonSerializerOptions()
+        {
+            WriteIndented = true
+        });
+
+        return json;
+    }
+
+    public async Task<Star> Import(string json)
+    {
+        // Determine which importer to use based on simple patterns
+        if (json.Contains("RequiredAllocations"))
+            return await ImportStar(json);
+        else if (json.Contains("AllocationsNeeded"))
+            return await ImportImage(json);
+        else if (json.Contains("_comment"))
+            return await ImportEgg(json);
+        else
+            throw new HttpApiException("Unable to determine the format of the imported star/image/egg", 400);
+    }
+
+    public async Task<Star> ImportStar(string json)
+    {
+        try
+        {
+            var model = JsonSerializer.Deserialize<StarExportModel>(json, new JsonSerializerOptions()
+            {
+                PropertyNameCaseInsensitive = true
+            });
+            
+            ArgumentNullException.ThrowIfNull(model);
+
+            var star = new Star()
+            {
+                Name = model.Name,
+                Author = model.Author,
+                Version = model.Version,
+                DonateUrl = model.DonateUrl,
+                UpdateUrl = model.UpdateUrl,
+                InstallScript = model.InstallScript,
+                InstallShell = model.InstallShell,
+                InstallDockerImage = model.InstallDockerImage,
+                OnlineDetection = model.OnlineDetection,
+                StopCommand = model.StopCommand,
+                StartupCommand = model.StartupCommand,
+                ParseConfiguration = model.ParseConfiguration,
+                RequiredAllocations = model.RequiredAllocations,
+                AllowDockerImageChange = model.AllowDockerImageChange,
+                Variables = model.Variables.Select(x => new StarVariable()
+                {
+                    DefaultValue = x.DefaultValue,
+                    Description = x.Description,
+                    Filter = x.Filter,
+                    Key = x.Key,
+                    AllowEditing = x.AllowEditing,
+                    AllowViewing = x.AllowViewing,
+                    Type = x.Type,
+                    Name = x.Name
+                }).ToList(),
+                DockerImages = model.DockerImages.Select(x => new StarDockerImage()
+                {
+                    DisplayName = x.DisplayName,
+                    AutoPulling = x.AutoPulling,
+                    Identifier = x.Identifier
+                }).ToList()
+            };
+
+            var finalStar = StarRepository.Add(star);
+
+            return finalStar;
+        }
+        catch (Exception e)
+        {
+            Logger.LogError("An unhandled error occured while importing star: {e}", e);
+            throw new HttpApiException("An unhandled error occured while importing the star", 400);
+        }
+    }
+
+    public async Task<Star> ImportImage(string json)
+    {
+        throw new NotImplementedException();
+    }
+
+    public async Task<Star> ImportEgg(string json)
+    {
+        throw new NotImplementedException();
+    }
+}