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// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using JetBrains.Annotations;
using Microsoft.Data.Entity.Design.Utilities;
using Microsoft.Data.Entity.Migrations.Infrastructure;
using Microsoft.Data.Entity.Relational;
using Microsoft.Framework.ConfigurationModel;
namespace Microsoft.Data.Entity.Design
{
// TODO: Add logging.
public class Program
{
public enum CommandCode
{
CommitConfiguration,
CreateMigration,
ListMigrations,
GenerateScript,
UpdateDatabase
}
private readonly IServiceProvider _serviceProvider;
protected Program()
{
}
public Program([NotNull] IServiceProvider serviceProvider)
{
Check.NotNull(serviceProvider, "serviceProvider");
_serviceProvider = serviceProvider;
}
public virtual void Main([CanBeNull] string[] args)
{
try
{
Run(args);
}
catch (Exception exception)
{
Console.WriteLine(exception.Message);
}
}
public virtual void Run([CanBeNull] params string[] args)
{
string command = null;
string[] commandArgs = null;
if (args != null
&& args.Any())
{
command = args.First();
commandArgs = args.Skip(1).ToArray();
}
Run(command, commandArgs);
}
public virtual void Run([CanBeNull] string command, [CanBeNull] params string[] commandArgs)
{
if (string.Equals(command, "config", StringComparison.OrdinalIgnoreCase))
{
CommitConfiguration(commandArgs);
}
else if (string.Equals(command, "create", StringComparison.OrdinalIgnoreCase))
{
CreateMigration(commandArgs);
}
else if (string.Equals(command, "list", StringComparison.OrdinalIgnoreCase))
{
ListMigrations(commandArgs);
}
else if (string.Equals(command, "script", StringComparison.OrdinalIgnoreCase))
{
GenerateScript(commandArgs);
}
else if (string.Equals(command, "apply", StringComparison.OrdinalIgnoreCase))
{
UpdateDatabase(commandArgs);
}
else
{
throw new InvalidOperationException(Strings.ToolUsage);
}
}
public virtual void CommitConfiguration([NotNull] string[] commandArgs)
{
Check.NotNull(commandArgs, "commandArgs");
var tool = CreateMigrationTool();
var configuration = CreateConfiguration(tool, CommandCode.CommitConfiguration, commandArgs);
tool.CommitConfiguration(configuration);
}
public virtual void CreateMigration([NotNull] string[] commandArgs)
{
Check.NotNull(commandArgs, "commandArgs");
var tool = CreateMigrationTool();
var configuration = CreateConfiguration(tool, CommandCode.CreateMigration, commandArgs);
tool.CreateMigration(configuration);
}
public virtual void ListMigrations([NotNull] string[] commandArgs)
{
Check.NotNull(commandArgs, "commandArgs");
var tool = CreateMigrationTool();
var configuration = CreateConfiguration(tool, CommandCode.ListMigrations, commandArgs);
OutputMigrations(tool.GetMigrations(configuration));
}
protected virtual void OutputMigrations(IReadOnlyList<IMigrationMetadata> migrations)
{
foreach (var migration in migrations)
{
Console.WriteLine(migration.MigrationId);
}
}
public virtual void GenerateScript([NotNull] string[] commandArgs)
{
Check.NotNull(commandArgs, "commandArgs");
var tool = CreateMigrationTool();
var configuration = CreateConfiguration(tool, CommandCode.GenerateScript, commandArgs);
OutputScript(tool.GenerateScript(configuration));
}
protected virtual void OutputScript(IReadOnlyList<SqlStatement> statements)
{
foreach (var statement in statements)
{
Console.WriteLine(statement.Sql);
}
}
public virtual void UpdateDatabase([NotNull] string[] commandArgs)
{
Check.NotNull(commandArgs, "commandArgs");
var tool = CreateMigrationTool();
var configuration = CreateConfiguration(tool, CommandCode.UpdateDatabase, commandArgs);
tool.UpdateDatabase(configuration);
}
protected virtual IConfigurationSourceContainer CreateConfiguration(
MigrationTool tool, CommandCode commandCode, string[] commandArgs)
{
var configuration = CreateConfiguration();
CommandLineConfigurationSource commandLineConfigSource;
string configFile;
if (commandArgs != null
&& commandArgs.Any())
{
commandLineConfigSource = new CommandLineConfigurationSource(commandArgs);
commandLineConfigSource.Load();
commandLineConfigSource.TryGet(MigrationTool.Constants.ConfigFileOption, out configFile);
}
else
{
commandLineConfigSource = null;
configFile = null;
}
if (commandCode != CommandCode.CommitConfiguration)
{
if (!string.IsNullOrEmpty(configFile))
{
configuration.AddIniFile(tool.ResolvePath(configFile));
}
else
{
configFile = tool.ResolvePath(MigrationTool.Constants.DefaultConfigFile);
if (File.Exists(configFile))
{
configuration.AddIniFile(configFile);
}
}
}
if (commandLineConfigSource != null)
{
configuration.Add(commandLineConfigSource);
}
return configuration;
}
protected virtual MigrationTool CreateMigrationTool()
{
return new MigrationTool();
}
protected virtual IConfigurationSourceContainer CreateConfiguration()
{
return new Configuration();
}
}
}