gitech

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// Copyright 2015 The Gogs Authors. All rights reserved.
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// Copyright 2019 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package git
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import (
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	"bytes"
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	"os"
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	"strings"
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	"time"
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)
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// CommitTreeOpts represents the possible options to CommitTree
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type CommitTreeOpts struct {
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	Parents    []string
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	Message    string
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	KeyID      string
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	NoGPGSign  bool
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	AlwaysSign bool
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}
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// CommitTree creates a commit from a given tree id for the user with provided message
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func (repo *Repository) CommitTree(author, committer *Signature, tree *Tree, opts CommitTreeOpts) (ObjectID, error) {
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	commitTimeStr := time.Now().Format(time.RFC3339)
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	// Because this may call hooks we should pass in the environment
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	env := append(os.Environ(),
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		"GIT_AUTHOR_NAME="+author.Name,
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		"GIT_AUTHOR_EMAIL="+author.Email,
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		"GIT_AUTHOR_DATE="+commitTimeStr,
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		"GIT_COMMITTER_NAME="+committer.Name,
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		"GIT_COMMITTER_EMAIL="+committer.Email,
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		"GIT_COMMITTER_DATE="+commitTimeStr,
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	)
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	cmd := NewCommand(repo.Ctx, "commit-tree").AddDynamicArguments(tree.ID.String())
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	for _, parent := range opts.Parents {
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		cmd.AddArguments("-p").AddDynamicArguments(parent)
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	}
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	messageBytes := new(bytes.Buffer)
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	_, _ = messageBytes.WriteString(opts.Message)
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	_, _ = messageBytes.WriteString("\n")
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	if opts.KeyID != "" || opts.AlwaysSign {
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		cmd.AddOptionFormat("-S%s", opts.KeyID)
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	}
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	if opts.NoGPGSign {
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		cmd.AddArguments("--no-gpg-sign")
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	}
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	stdout := new(bytes.Buffer)
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	stderr := new(bytes.Buffer)
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	err := cmd.Run(&RunOpts{
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		Env:    env,
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		Dir:    repo.Path,
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		Stdin:  messageBytes,
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		Stdout: stdout,
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		Stderr: stderr,
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	})
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	if err != nil {
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		return nil, ConcatenateError(err, stderr.String())
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	}
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	return NewIDFromString(strings.TrimSpace(stdout.String()))
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}
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