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/*******************************************************************************
 * Name		: Repository.BranchSpec.cs
 *
 * Author	: wjb
 *
 * Description	: BranchSpec operations for the Repository.
 *
 ******************************************************************************/
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;

namespace Perforce.P4
{
	public partial class Repository
	{
		/// <summary>
		/// Create a new branch in the repository.
		/// </summary>
		/// <param name="branch">Branch specification for the new branch</param>
		/// <param name="options">The '-i' flag is required when creating a new branch </param>
        /// <returns>The Branch object if new branch was created, null if creation failed</returns>
        /// <remarks>
		/// <br/>
		/// <br/><b>p4 help branch</b>
		/// <br/> 
		/// <br/>     branch -- Create, modify, or delete a branch view specification
		/// <br/> 
		/// <br/>     p4 branch [-f] name
		/// <br/>     p4 branch -d [-f] name
		/// <br/>     p4 branch [ -S stream ] [ -P parent ] -o name
		/// <br/>     p4 branch -i [-f]
		/// <br/> 
		/// <br/> 	A branch specification ('spec') is a named, user-defined mapping of
		/// <br/> 	depot files to depot files. It can be used with most of the commands
		/// <br/> 	that operate on two sets of files ('copy', 'merge', 'integrate',
		/// <br/> 	'diff2', etc.)
		/// <br/> 
		/// <br/> 	Creating a branch spec does not branch files.  To branch files, use
		/// <br/> 	'p4 copy', with or without a branch spec.
		/// <br/> 	
		/// <br/> 	The 'branch' command puts the branch spec into a temporary file and
		/// <br/> 	invokes the editor configured by the environment variable $P4EDITOR.
		/// <br/> 	Saving the file creates or modifies the branch spec.
		/// <br/> 
		/// <br/> 	The branch spec contains the following fields:
		/// <br/> 
		/// <br/> 	Branch:      The branch spec name (read only).
		/// <br/> 
		/// <br/> 	Owner:       The user who created this branch spec. Can be changed.
		/// <br/> 
		/// <br/> 	Update:      The date this branch spec was last modified.
		/// <br/> 
		/// <br/> 	Access:      The date of the last command used with this spec.
		/// <br/> 
		/// <br/> 	Description: A description of the branch spec (optional).
		/// <br/> 
		/// <br/> 	Options:     Flags to change the branch spec behavior. The defaults
		/// <br/> 		     are marked with *.
		/// <br/> 
		/// <br/> 		locked   	Permits only the owner to change the spec.
		/// <br/> 		unlocked *	Prevents the branch spec from being deleted.
		/// <br/> 
		/// <br/> 	View:        Lines mapping of one view of depot files to another.
		/// <br/> 		     Both the left and right-hand sides of the mappings refer
		/// <br/> 		     to the depot namespace.  See 'p4 help views' for more on
		/// <br/> 		     view syntax.
		/// <br/> 
		/// <br/> 	New branch specs are created with a default view that maps all depot
		/// <br/> 	files to themselves.  This view must be changed before the branch
		/// <br/> 	spec can be saved.
		/// <br/> 
		/// <br/> 	The -d flag deletes the named branch spec.
		/// <br/> 
		/// <br/> 	The -o flag writes the branch spec to standard output. The user's
		/// <br/> 	editor is not invoked.
		/// <br/> 
		/// <br/> 	The -i flag causes a branch spec to be read from the standard input.
		/// <br/> 	The user's editor is not invoked.
		/// <br/> 
		/// <br/> 	The -f flag enables a user with 'admin' privilege to delete the spec
		/// <br/> 	or set the 'last modified' date.  By default, specs can be deleted
		/// <br/> 	only by their owner.
		/// <br/> 
		/// <br/> 	A branch spec can also be used to expose the internally generated
		/// <br/> 	mapping of a stream to its parent. (See 'p4 help stream' and 'p4
		/// <br/> 	help streamintro'.)
		/// <br/> 
		/// <br/> 	The -S stream flag will expose the internally generated mapping.
		/// <br/> 	The -P flag may be used with -S to treat the stream as if it were a
		/// <br/> 	child of a different parent. The -o flag is required with -S.
		/// <br/> 
		/// <br/> 
		/// </remarks>
		/// <example>
		///		To create a branch spec [-i]:
		///		<code>
		///	
		///			BranchSpec newBranchSpec = new BranchSpec();
		///			newBranchSpec.Id = "newBranchSpec";
		///			newBranchSpec.Owner = "admin";
		///			newBranchSpec.Description = " created by perforce";
		///			newBranchSpec.ViewMap = new ViewMap();
		///			string v0 = "//depot/main/... //depot/rel1/...";
		///			string v1 = "//depot/main/... //depot/rel2/...";
		///			string v2 = "//depot/dev/... //depot/main/...";
		///			newBranchSpec.ViewMap.Add(v0);
		///			newBranchSpec.ViewMap.Add(v1);
		///			newBranchSpec.ViewMap.Add(v2);
		///			Options opts = new Options(BranchSpecCmdFlags.Input);
		///			_repository.CreateBranchSpec(newBranchSpec, opts);
		///	
		///		</code>
		/// </example>
		/// <seealso cref="BranchSpecCmdFlags"/>
        public BranchSpec CreateBranchSpec(BranchSpec branch, Options options)
		{
			if (branch == null)
			{
				throw new ArgumentNullException("branch");

			}
			P4Command cmd = new P4Command(this, "branch", true);

			cmd.DataSet = branch.ToString();

			if (options == null)
			{
				options = new Options((BranchSpecCmdFlags.Input), null, null);
			}
			if (options.ContainsKey("-i") == false)
			{
				options["-i"] = null;
			}

			P4CommandResult results = cmd.Run(options);
			if (results.Success)
			{
				return branch;
			}
			else
			{
				P4Exception.Throw(results.ErrorList);
			}
			return null;
		}
		/// <summary>
		/// Create a new branch in the repository.
		/// </summary>
		/// <param name="branch">Branch specification for the new branch</param>
		/// <returns>The Branch object if new branch was created, null if creation failed</returns>
		/// <example>
		///		To create a basic branch spec:
		///		<code> 
		///	
		///		BranchSpec newBranchSpec = new BranchSpec();
		///		newBranchSpec.Id = "newBranchSpec";
		///		newBranchSpec.ViewMap = new ViewMap();
		///		string v0 = "//depot/main/... //depot/rel1/...";
		///		newBranchSpec.ViewMap.Add(v0);
		///		_repository.CreateBranchSpec(newBranchSpec);
		///	
		///		</code>
		/// </example>
		public BranchSpec CreateBranchSpec(BranchSpec branch)
		{
			return CreateBranchSpec(branch, null);
		}
		/// <summary>
		/// Update the record for a branch in the repository
		/// </summary>
		/// <param name="branch">Branch specification for the branch being updated</param>
		/// <returns>The Branch object if new depot was saved, null if creation failed</returns>
		/// <example>
		///		To append a view to an existing branch spec:
		///		<code> 
		///	
		///			BranchSpec updateBranchSpec = _repository.GetBranchSpec("newBranchSpec");
		///			string v0 = "\"//depot/main/a file with spaces.txt\" \"//depot/rel1/a file with spaces.txt\"";
		///			updateBranchSpec.ViewMap.Add(v0);        
		///			_repository.UpdateBranchSpec(updateBranchSpec);
		///	
		///		</code>
		///		To lock a branch spec:
		///		<code> 
		///	
		///			BranchSpec updateBranchSpec = _repository.GetBranchSpec("newBranchSpec");
		///			updateBranchSpec.Locked = true;
		///			_repository.UpdateBranchSpec(updateBranchSpec);
		///	
		///		</code>    
		/// </example>
		public BranchSpec UpdateBranchSpec(BranchSpec branch)
		{
			return CreateBranchSpec(branch, null);
		}
		/// <summary>
		/// Get the record for an existing branch from the repository.
		/// </summary>
		/// <param name="branch">Branch name</param>
		/// <returns>The Branch object if branch was found, null if creation failed</returns>
        /// <example>
		///		To get a branch spec:
		///		<code> 
		///	
		///		BranchSpec getBranchSpec = _repository.GetBranchSpec("newBranchSpec");
        ///	
		///		</code>
		/// </example>
		public BranchSpec GetBranchSpec(string branch, string stream, string parent, Options options)
		{
			if (branch == null)
			{
				throw new ArgumentNullException("branch");

			}
			P4Command cmd = new P4Command(this, "branch", true, branch);

			if (options == null)
			{
				options = new Options((BranchSpecCmdFlags.Output), stream, parent);
			}

			if (options.ContainsKey("-o") == false)
			{
				options["-o"] = null;
			}

			P4CommandResult results = cmd.Run(options);
			if (results.Success)
			{
				if ((results.TaggedOutput == null) || (results.TaggedOutput.Count <= 0))
				{
					return null;
				}

				BranchSpec value = new BranchSpec();
				value.FromBranchSpecCmdTaggedOutput(results.TaggedOutput[0]);

				return value;
			}
			else
			{
				P4Exception.Throw(results.ErrorList);
			}
			return null;
		}
		public BranchSpec GetBranchSpec(string branch)
		{
			return GetBranchSpec(branch, null, null, null);
		}

		/// <summary>
		/// Get a list of branches from the repository
		/// </summary>
		/// <returns>A list containing the matching branches</returns>
		/// <remarks>
		/// <br/><b>p4 help branches</b>
		/// <br/> 
		/// <br/>     branches -- Display list of branch specifications
		/// <br/> 
		/// <br/>     p4 branches [-t] [-u user] [[-e|-E] nameFilter -m max]
		/// <br/> 
		/// <br/> 	Lists branch specifications. (See 'p4 help branch'.) 
		/// <br/> 
		/// <br/> 	The -t flag displays the time as well as the date.
		/// <br/> 
		/// <br/> 	The -u user flag lists branch specs owned by the specified user.
		/// <br/> 
		/// <br/> 	The -e nameFilter flag lists branch specs with a name that matches
		/// <br/> 	the nameFilter pattern, for example: -e 'svr-dev-rel*'. -E makes
		/// <br/> 	the matching case-insensitive.
		/// <br/> 
		/// <br/> 	The -m max flag limits output to the specified number of branch specs.
		/// <br/> 
		/// <br/> 
		/// </remarks>
		/// <example>
		///		To get all branches and include timestamps [-t] (WARNING, will fetch all branches from the repository):
		///		<code> 
		///	
		///			Options opts = new Options(BranchSpecsCmdFlags.Time, "", "", -1);
		/// 		IList&#60;Branch&#62; branches = _repository.GetBranchSpecs(opts);
		///			
		///		</code>
		///		To get branches owned by 'Bob' [-u]:
		///		<code> 
		///			
		///			Options opts = new Options(BranchSpecsCmdFlags.None, "Bob", "", -1);
		///			IList&#60;Branch&#62; branches = _repository.GetBranchSpecs(opts);
		///			
		///		</code>
		///		To get the first 10 branches that start with the capital letter 'A' [-m] [-e]:
		///		<code> 
		///			
		///			Options opts = new Options(BranchSpecsCmdFlags.None, "", "A*", 10);
		///			IList&#60;Branch&#62; branches = _repository.GetBranchSpecs(opts);
		///			
		///		</code>
		///		To get the first 10 branches that start with the letter 'A' case insensitive [-m] [-E]:
		///		<code> 
		///			
		///			Options opts = new Options(BranchSpecsCmdFlags.IgnoreCase, "", "A*", 10);
		///			IList&#60;Branch&#62; branches = _repository.GetBranchSpecs(opts);
		///			
		///		</code>
		/// </example>
		/// <seealso cref="BranchSpecsCmdFlags"/>
		public IList<BranchSpec> GetBranchSpecs(Options options)
		{
			P4Command cmd = new P4Command(this, "branches", true);


			P4CommandResult results = cmd.Run(options);
			if (results.Success)
			{
				if ((results.TaggedOutput == null) || (results.TaggedOutput.Count <= 0))
				{
					return null;
				}

                bool dst_mismatch = false;
                string offset = string.Empty;

                if (Server != null && Server.Metadata != null)
                {
                    offset = Server.Metadata.DateTimeOffset;
                    dst_mismatch = FormBase.DSTMismatch(Server.Metadata);
                }

				List<BranchSpec> value = new List<BranchSpec>();
				foreach (TaggedObject obj in results.TaggedOutput)
				{
					BranchSpec branch = new BranchSpec();
					branch.FromBranchSpecsCmdTaggedOutput(obj,offset,dst_mismatch);
					value.Add(branch);
				}
				return value;
			}
			else
			{
				P4Exception.Throw(results.ErrorList);
			}
			return null;
		}

		/// <summary>
		/// Delete a branch from the repository
		/// </summary>
		/// <param name="branch">The branch to be deleted</param>
		/// <param name="options">The '-f' and '-d' flags are valid when deleting an
		/// existing branch</param>
		/// <example>
		///		To delete a branch spec owned by you [-d implied]:
		///		<code> 
		///						
		///         BranchSpec deleteBranchSpec = new BranchSpec();
		///         deleteBranchSpec.Id = "newBranchSpec";
		/// 		_repository.DeleteBranchSpec(deleteBranchSpec, null);
		///			
		///		</code>
		///		To delete a branch owned by someone other than you [-d implied] [-f requires admin privileges]:
		///		<code> 
		///						
		///         BranchSpec deleteBranchSpec = new BranchSpec();
		///         deleteBranchSpec.Id = "newBranchSpec";
		///			Options opts = new Options(BranchSpecsCmdFlags.Force);
		/// 		_repository.DeleteBranchSpec(deleteBranchSpec, opts);
		///			
		///		</code>
		/// </example>
		/// <seealso cref="BranchSpecCmdFlags"/>
		public void DeleteBranchSpec(BranchSpec branch, Options options)
		{
			if (branch == null)
			{
				throw new ArgumentNullException("branch");

			}
			P4Command cmd = new P4Command(this, "branch", true, branch.Id);

			if (options == null)
			{
				options = new Options(BranchSpecCmdFlags.Delete, null, null);
			}

			if (options.ContainsKey("-d") == false)
			{
				options["-d"] = null;
			}

			P4CommandResult results = cmd.Run(options);
			if (results.Success == false)
			{
				P4Exception.Throw(results.ErrorList);
			}
		}
	}
}