gitea/modules/issue/template/unmarshal.go
6543 77e29e0c39
Extend issue template yaml engine (#29274)
Add new option:

`visible`: witch can hide a specific field of the form or the created
content afterwards

It is a string array witch can contain `form` and `content`. If only
`form` is present, it wont show up in the created issue afterwards and
the other way around. By default it sets both except for markdown

As they are optional and github don't have any similar thing, it is non
breaking and also do not conflict with it.

With this you can:
- define "post issue creation" elements like a TODO list to track an
issue state
- make sure to have a checkbox that reminds the user to check for a
thing but dont have it in the created issue afterwards
- define markdown for the created issue (was the downside of using yaml
instead of md in the past)
 - ...

## Demo

```yaml
name: New Contribution
description: External Contributor creating a pull

body:
- type: checkboxes
  id: extern-todo
  visible: [form]
  attributes:
    label: Contribution Guidelines
    options:
      - label: I checked there exist no similar feature to be extended
        required: true
      - label: I did read the CONTRIBUTION.MD 
        required: true
- type: checkboxes
  id: intern-todo
  visible: [content]
  attributes:
    label: Maintainer Check-List
    options:
      - label: Does this pull follow the KISS principe
      - label: Checked if internal bord was notifyed  
# ....
```
[Demo
Video](https://cloud.obermui.de/s/tm34fSAbJp9qw9z/download/vid-20240220-152751.mkv)


---
*Sponsored by Kithara Software GmbH*

---------

Co-authored-by: John Olheiser <john.olheiser@gmail.com>
Co-authored-by: delvh <dev.lh@web.de>
2024-03-04 01:37:00 +01:00

148 lines
4.3 KiB
Go

// Copyright 2022 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package template
import (
"fmt"
"io"
"path"
"strconv"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/markup/markdown"
"code.gitea.io/gitea/modules/setting"
api "code.gitea.io/gitea/modules/structs"
"code.gitea.io/gitea/modules/util"
"gopkg.in/yaml.v3"
)
// CouldBe indicates a file with the filename could be a template,
// it is a low cost check before further processing.
func CouldBe(filename string) bool {
it := &api.IssueTemplate{
FileName: filename,
}
return it.Type() != ""
}
// Unmarshal parses out a valid template from the content
func Unmarshal(filename string, content []byte) (*api.IssueTemplate, error) {
it, err := unmarshal(filename, content)
if err != nil {
return nil, err
}
if err := Validate(it); err != nil {
return nil, err
}
return it, nil
}
// UnmarshalFromEntry parses out a valid template from the blob in entry
func UnmarshalFromEntry(entry *git.TreeEntry, dir string) (*api.IssueTemplate, error) {
return unmarshalFromEntry(entry, path.Join(dir, entry.Name())) // Filepaths in Git are ALWAYS '/' separated do not use filepath here
}
// UnmarshalFromCommit parses out a valid template from the commit
func UnmarshalFromCommit(commit *git.Commit, filename string) (*api.IssueTemplate, error) {
entry, err := commit.GetTreeEntryByPath(filename)
if err != nil {
return nil, fmt.Errorf("get entry for %q: %w", filename, err)
}
return unmarshalFromEntry(entry, filename)
}
// UnmarshalFromRepo parses out a valid template from the head commit of the branch
func UnmarshalFromRepo(repo *git.Repository, branch, filename string) (*api.IssueTemplate, error) {
commit, err := repo.GetBranchCommit(branch)
if err != nil {
return nil, fmt.Errorf("get commit on branch %q: %w", branch, err)
}
return UnmarshalFromCommit(commit, filename)
}
func unmarshalFromEntry(entry *git.TreeEntry, filename string) (*api.IssueTemplate, error) {
if size := entry.Blob().Size(); size > setting.UI.MaxDisplayFileSize {
return nil, fmt.Errorf("too large: %v > MaxDisplayFileSize", size)
}
r, err := entry.Blob().DataAsync()
if err != nil {
return nil, fmt.Errorf("data async: %w", err)
}
defer r.Close()
content, err := io.ReadAll(r)
if err != nil {
return nil, fmt.Errorf("read all: %w", err)
}
return Unmarshal(filename, content)
}
func unmarshal(filename string, content []byte) (*api.IssueTemplate, error) {
it := &api.IssueTemplate{
FileName: filename,
}
// Compatible with treating description as about
compatibleTemplate := &struct {
About string `yaml:"description"`
}{}
if typ := it.Type(); typ == api.IssueTemplateTypeMarkdown {
if templateBody, err := markdown.ExtractMetadata(string(content), it); err != nil {
// The only thing we know here is that we can't extract metadata from the content,
// it's hard to tell if metadata doesn't exist or metadata isn't valid.
// There's an example template:
//
// ---
// # Title
// ---
// Content
//
// It could be a valid markdown with two horizontal lines, or an invalid markdown with wrong metadata.
it.Content = string(content)
it.Name = path.Base(it.FileName) // paths in Git are always '/' separated - do not use filepath!
it.About, _ = util.SplitStringAtByteN(it.Content, 80)
} else {
it.Content = templateBody
if it.About == "" {
if _, err := markdown.ExtractMetadata(string(content), compatibleTemplate); err == nil && compatibleTemplate.About != "" {
it.About = compatibleTemplate.About
}
}
}
} else if typ == api.IssueTemplateTypeYaml {
if err := yaml.Unmarshal(content, it); err != nil {
return nil, fmt.Errorf("yaml unmarshal: %w", err)
}
if it.About == "" {
if err := yaml.Unmarshal(content, compatibleTemplate); err == nil && compatibleTemplate.About != "" {
it.About = compatibleTemplate.About
}
}
for i, v := range it.Fields {
// set default id value
if v.ID == "" {
v.ID = strconv.Itoa(i)
}
// set default visibility
if v.Visible == nil {
v.Visible = []api.IssueFormFieldVisible{api.IssueFormFieldVisibleForm}
// markdown is not submitted by default
if v.Type != api.IssueFormFieldTypeMarkdown {
v.Visible = append(v.Visible, api.IssueFormFieldVisibleContent)
}
}
}
}
return it, nil
}