[API] Add Reactions (#9220)

* reject reactions wich ar not allowed

* dont duble check CreateReaction now throw ErrForbiddenIssueReaction

* add /repos/{owner}/{repo}/issues/comments/{id}/reactions endpoint

* add Find Functions

* fix some swagger stuff + add issue reaction endpoints + GET ReactionList now use FindReactions...

* explicite Issue Only Reaction for FindReactionsOptions with "-1" commentID

* load issue; load user ...

* return error again

* swagger def canged after LINT

* check if user has ben loaded

* add Tests

* better way of comparing results

* add suggestion

* use different issue for test
(dont interfear with integration test)

* test dont compare Location on timeCompare

* TEST: add forbidden dubble add

* add comments in code to explain

* add settings.UI.ReactionsMap
so if !setting.UI.ReactionsMap[opts.Type] works

modules/setting/setting.go

@@ -171,6 +171,7 @@ var (
 		DefaultTheme          string
 		Themes                []string
 		Reactions             []string
+		ReactionsMap          map[string]bool
 		SearchRepoDescription bool
 		UseServiceWorker      bool
 
@@ -985,6 +986,11 @@ func NewContext() {
 	U2F.AppID = sec.Key("APP_ID").MustString(strings.TrimRight(AppURL, "/"))
 
 	zip.Verbose = false
+
+	UI.ReactionsMap = make(map[string]bool)
+	for _, reaction := range UI.Reactions {
+		UI.ReactionsMap[reaction] = true
+	}
 }
 
 func loadInternalToken(sec *ini.Section) string {

modules/structs/issue_reaction.go

@@ -0,0 +1,22 @@
+// Copyright 2019 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package structs
+
+import (
+	"time"
+)
+
+// EditReactionOption contain the reaction type
+type EditReactionOption struct {
+	Reaction string `json:"content"`
+}
+
+// ReactionResponse contain one reaction
+type ReactionResponse struct {
+	User     *User  `json:"user"`
+	Reaction string `json:"content"`
+	// swagger:strfmt date-time
+	Created time.Time `json:"created_at"`
+}