restructure ef core migrations

-added different context for production environments
-added migrations for both dev and production databases
-added config values ``ProdDbProvider`` and ``ProdDbConnection`` (since most likely production environment will use PGSQL or MySQL, although PGSQL migrations are not provided but can be made)

src/Configuration/ApiServerConfig.cs

@@ -9,8 +9,10 @@ public class ApiServerConfig {
     public bool LoadNonSoDData  { get; set; } = false;
 
     public DbProviders DbProvider { get; set; } = DbProviders.SQLite;
+    public DbProviders ProdDbProvider {  get; set; } = DbProviders.MySQL;
     public string DbPath { get; set; } = string.Empty;
     public string DbConnection { get; set; } = string.Empty;
+    public string ProdDbConnection { get; set; } = string.Empty;
 }
 
 public enum DbProviders {

src/Model/ProductionDBContext.cs

@@ -0,0 +1,34 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Options;
+using sodoff.Configuration;
+
+namespace sodoff.Model
+{
+    public class ProductionDBContext : DBContext
+    {
+        private readonly IOptions<ApiServerConfig> config;
+        public ProductionDBContext(IOptions<ApiServerConfig> config) : base(config)
+        {
+            this.config = config;
+        }
+
+        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+        {
+            #if USE_POSTGRESQL
+            if (config.Value.ProdDbProvider == DbProviders.PostgreSQL)
+            {
+                optionsBuilder.UseNpgsql(config.Value.ProdDbConnection).UseLazyLoadingProxies();
+                return;
+            }
+            #endif
+            #if USE_MYSQL
+            if (config.Value.ProdDbProvider == DbProviders.MySQL)
+            {
+                optionsBuilder.UseMySQL(config.Value.ProdDbConnection).UseLazyLoadingProxies();
+                return;
+            }
+            #endif
+            throw new Exception($"Unsupported Production DbProvider {config.Value.ProdDbProvider}");
+        }
+    }
+}

src/Program.cs

@@ -21,6 +21,7 @@ builder.Services.AddControllers(options => {
     options.Filters.Add<LogRequestOnError>();
 });
 builder.Services.AddDbContext<DBContext>();
+builder.Services.AddDbContext<ProductionDBContext>();
 
 // create Modding Service singleton here ... do this before start http server to avoid serve invalid assets list
 builder.Services.AddSingleton<ModdingService>(new ModdingService());
@@ -63,11 +64,10 @@ var app = builder.Build();
 
 using var scope = app.Services.CreateScope();
 
-if(app.Environment.IsDevelopment())
-{
-    var migrations = scope.ServiceProvider.GetRequiredService<DBContext>().Database.GetPendingMigrations();
-    if (migrations != null) await scope.ServiceProvider.GetRequiredService<DBContext>().Database.MigrateAsync();
-}
+if (app.Environment.IsDevelopment())
+    scope.ServiceProvider.GetRequiredService<DBContext>().Database.Migrate();
+else
+    scope.ServiceProvider.GetRequiredService<ProductionDBContext>().Database.Migrate();
 
 // Configure the HTTP request pipeline.
 

src/appsettings.json

@@ -63,13 +63,19 @@
         "// DbProvider": "Select database backend to use: SQLite, PostgreSQL, MySQL (availability may depend on build options)",
         "DbProvider": "SQLite",
 
+        "// ProdDbProvider": "Select production database backend to use: PostgreSQL, MySQL (availability may depend on build options)",
+        "ProdDbProvider": "MySQL",
+
         "// DbPath": "Path to SQLite database file. If empty, \"sodoff.db\" from current directory will be used.",
         "DbPath": "",
 
         "// DbConnection": "Database connection string for PostgreSQL and MySQL",
         "// DbConnection PostgreSQL Example": "Host=127.0.0.1;Database=sodoffdb;Username=sodoffuser;Password=secret",
         "// DbConnection MySQL Example": "Server=127.0.0.1;Database=sodoffdb;Uid=sodoffuser;Pwd=secret;Allow User Variables=True",
-    "DbConnection": ""
+        "DbConnection": "",
+
+        "// ProdDbConnection": "Database connection string for PostgreSQL and MySQL (examples above)",
+        "ProdDbConnection": "Server=172.21.0.3;Database=sodoffdb;Uid=sodoffuser;Pwd=8s7IvsrMQWASTXs;Allow User Variables=True"
     },
   "Logging": {
     "LogLevel": {

src/sodoff.csproj

@@ -168,5 +168,7 @@
 
   <ItemGroup>
     <Folder Include="Dlls\" />
+    <Folder Include="Migrations\ProductionMigrations\" />
+    <Folder Include="Migrations\DevMigrations\" />
   </ItemGroup>
 </Project>