[API] Fix 9544 | return 200 when reaction already exist (#9550)

* add ErrReactionAlreadyExist

* extend CreateReaction

* reaction already exist = 200

* extend FindReactionsOptions

* refactor swagger options/definitions

* fix swagger-validate

* Update models/error.go

Co-Authored-By: zeripath <art27@cantab.net>

* fix test PART1

* extend FindReactionsOptions with UserID option

* catch error on test

* fix test PART2

* format ...

Co-authored-by: zeripath <art27@cantab.net>
Co-authored-by: techknowlogick <matti@mdranta.net>

routers/api/v1/swagger/issue.go

@@ -99,23 +99,16 @@ type swaggerResponseStopWatchList struct {
 	Body []api.StopWatch `json:"body"`
 }
 
-// EditReactionOption
-// swagger:response EditReactionOption
-type swaggerEditReactionOption struct {
+// Reaction
+// swagger:response Reaction
+type swaggerReaction struct {
 	// in:body
-	Body api.EditReactionOption `json:"body"`
+	Body api.Reaction `json:"body"`
 }
 
-// ReactionResponse
-// swagger:response ReactionResponse
-type swaggerReactionResponse struct {
+// ReactionList
+// swagger:response ReactionList
+type swaggerReactionList struct {
 	// in:body
-	Body api.ReactionResponse `json:"body"`
-}
-
-// ReactionResponseList
-// swagger:response ReactionResponseList
-type swaggerReactionResponseList struct {
-	// in:body
-	Body []api.ReactionResponse `json:"body"`
+	Body []api.Reaction `json:"body"`
 }

routers/api/v1/swagger/options.go

@@ -123,4 +123,7 @@ type swaggerParameterBodies struct {
 
 	// in:body
 	RepoTopicOptions api.RepoTopicOptions
+
+	// in:body
+	EditReactionOption api.EditReactionOption
 }