package diff

import (

"github.com/getkin/kin-openapi/openapi3"

)

// TagsDiff describes the changes between a pair of lists of tag objects: https://swagger.io/specification/#tag-object

type TagsDiff struct {

Added []string `json:"added,omitempty" yaml:"added,omitempty"`

Deleted []string `json:"deleted,omitempty" yaml:"deleted,omitempty"`

Modified ModifiedTags `json:"modified,omitempty" yaml:"modified,omitempty"`

}

func newTagsDiff() *TagsDiff {

return &TagsDiff{

Added: []string{},

Deleted: []string{},

Modified: ModifiedTags{},

}

}

// ModifiedTags is map of tag names to their respective diffs

type ModifiedTags map[string]*TagDiff

// Empty indicates whether a change was found in this element

func (tagsDiff *TagsDiff) Empty() bool {

if tagsDiff == nil {

return true

}

return len(tagsDiff.Added) == 0 &&

len(tagsDiff.Deleted) == 0 &&

len(tagsDiff.Modified) == 0

}

func getTagsDiff(config *Config, tags1, tags2 openapi3.Tags) *TagsDiff {

diff := getTagsDiffInternal(config, tags1, tags2)

if diff.Empty() {

return nil

}

return diff

}

func getTagsDiffInternal(config *Config, tags1, tags2 openapi3.Tags) *TagsDiff {

result := newTagsDiff()

for _, tag1 := range tags1 {

if tag2 := tags2.Get(tag1.Name); tag2 != nil {

if diff := getTagDiff(config, tag1, tag2); !diff.Empty() {

result.Modified[tag1.Name] = diff

}

} else {

result.Deleted = append(result.Deleted, tag1.Name)

}

}

for _, tag2 := range tags2 {

if tag1 := tags1.Get(tag2.Name); tag1 == nil {

result.Added = append(result.Added, tag2.Name)

}

}

return result

}

func (tagsDiff *TagsDiff) getSummary() *SummaryDetails {

return &SummaryDetails{

Added: len(tagsDiff.Added),

Deleted: len(tagsDiff.Deleted),

Modified: len(tagsDiff.Modified),

}

}