Support Issue forms and PR forms (#20987)

* feat: extend issue template for yaml

* feat: support yaml template

* feat: render form to markdown

* feat: support yaml template for pr

* chore: rename to Fields

* feat: template unmarshal

* feat: split template

* feat: render to markdown

* feat: use full name as template file name

* chore: remove useless file

* feat: use dropdown of fomantic ui

* feat: update input style

* docs: more comments

* fix: render text without render

* chore: fix lint error

* fix: support use description as about in markdown

* fix: add field class in form

* chore: generate swagger

* feat: validate template

* feat: support is_nummber and regex

* test: fix broken unit tests

* fix: ignore empty body of md template

* fix: make multiple easymde editors work in one page

* feat: better UI

* fix: js error in pr form

* chore: generate swagger

* feat: support regex validation

* chore: generate swagger

* fix: refresh each markdown editor

* chore: give up required validation

* fix: correct issue template candidates

* fix: correct checkboxes style

* chore: ignore .hugo_build.lock in docs

* docs: separate out a new doc for merge templates

* docs: introduce syntax of yaml template

* feat: show a alert for invalid templates

* test: add case for a valid template

* fix: correct attributes of required checkbox

* fix: add class not-under-easymde for dropzone

* fix: use more back-quotes

* chore: remove translation in zh-CN

* fix EasyMDE statusbar margin

* fix: remove repeated blocks

* fix: reuse regex for quotes

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

1 files changed, 49 insertions, 11 deletions

diff --git a/modules/structs/issue.go b/modules/structs/issue.go
index c72487fe4d..27ec81f728 100644
--- a/modules/structs/issue.go
+++ b/modules/structs/issue.go
@@ -5,7 +5,7 @@
 package structs
 
 import (
-	"strings"
+	"path/filepath"
 	"time"
 )
 
@@ -120,19 +120,57 @@ type IssueDeadline struct {
 	Deadline *time.Time `json:"due_date"`
 }
 
+// IssueFormFieldType defines issue form field type, can be "markdown", "textarea", "input", "dropdown" or "checkboxes"
+type IssueFormFieldType string
+
+const (
+	IssueFormFieldTypeMarkdown   IssueFormFieldType = "markdown"
+	IssueFormFieldTypeTextarea   IssueFormFieldType = "textarea"
+	IssueFormFieldTypeInput      IssueFormFieldType = "input"
+	IssueFormFieldTypeDropdown   IssueFormFieldType = "dropdown"
+	IssueFormFieldTypeCheckboxes IssueFormFieldType = "checkboxes"
+)
+
+// IssueFormField represents a form field
+// swagger:model
+type IssueFormField struct {
+	Type        IssueFormFieldType     `json:"type" yaml:"type"`
+	ID          string                 `json:"id" yaml:"id"`
+	Attributes  map[string]interface{} `json:"attributes" yaml:"attributes"`
+	Validations map[string]interface{} `json:"validations" yaml:"validations"`
+}
+
 // IssueTemplate represents an issue template for a repository
 // swagger:model
 type IssueTemplate struct {
-	Name     string   `json:"name" yaml:"name"`
-	Title    string   `json:"title" yaml:"title"`
-	About    string   `json:"about" yaml:"about"`
-	Labels   []string `json:"labels" yaml:"labels"`
-	Ref      string   `json:"ref" yaml:"ref"`
-	Content  string   `json:"content" yaml:"-"`
-	FileName string   `json:"file_name" yaml:"-"`
+	Name     string            `json:"name" yaml:"name"`
+	Title    string            `json:"title" yaml:"title"`
+	About    string            `json:"about" yaml:"about"` // Using "description" in a template file is compatible
+	Labels   []string          `json:"labels" yaml:"labels"`
+	Ref      string            `json:"ref" yaml:"ref"`
+	Content  string            `json:"content" yaml:"-"`
+	Fields   []*IssueFormField `json:"body" yaml:"body"`
+	FileName string            `json:"file_name" yaml:"-"`
 }
 
-// Valid checks whether an IssueTemplate is considered valid, e.g. at least name and about
-func (it IssueTemplate) Valid() bool {
-	return strings.TrimSpace(it.Name) != "" && strings.TrimSpace(it.About) != ""
+// IssueTemplateType defines issue template type
+type IssueTemplateType string
+
+const (
+	IssueTemplateTypeMarkdown IssueTemplateType = "md"
+	IssueTemplateTypeYaml     IssueTemplateType = "yaml"
+)
+
+// Type returns the type of IssueTemplate, can be "md", "yaml" or empty for known
+func (it IssueTemplate) Type() IssueTemplateType {
+	if it.Name == "config.yaml" || it.Name == "config.yml" {
+		// ignore config.yaml which is a special configuration file
+		return ""
+	}
+	if ext := filepath.Ext(it.FileName); ext == ".md" {
+		return IssueTemplateTypeMarkdown
+	} else if ext == ".yaml" || ext == ".yml" {
+		return "yaml"
+	}
+	return IssueTemplateTypeYaml
 }