1package cache
2
3import (
4 "strings"
5
6 "github.com/MichaelMure/git-bug/bug"
7)
8
9// Filter is a predicate that match a subset of bugs
10type Filter func(repoCache *RepoCache, excerpt *BugExcerpt) bool
11
12// StatusFilter return a Filter that match a bug status
13func StatusFilter(query string) (Filter, error) {
14 status, err := bug.StatusFromString(query)
15 if err != nil {
16 return nil, err
17 }
18
19 return func(repoCache *RepoCache, excerpt *BugExcerpt) bool {
20 return excerpt.Status == status
21 }, nil
22}
23
24// AuthorFilter return a Filter that match a bug author
25func AuthorFilter(query string) Filter {
26 return func(repoCache *RepoCache, excerpt *BugExcerpt) bool {
27 query = strings.ToLower(query)
28
29 // Normal identity
30 if excerpt.AuthorId != "" {
31 author, ok := repoCache.identitiesExcerpts[excerpt.AuthorId]
32 if !ok {
33 panic("missing identity in the cache")
34 }
35
36 return strings.Contains(strings.ToLower(author.Name), query) ||
37 strings.Contains(strings.ToLower(author.Login), query)
38 }
39
40 // Legacy identity support
41 return strings.Contains(strings.ToLower(excerpt.LegacyAuthor.Name), query) ||
42 strings.Contains(strings.ToLower(excerpt.LegacyAuthor.Login), query)
43 }
44}
45
46// LabelFilter return a Filter that match a label
47func LabelFilter(label string) Filter {
48 return func(repoCache *RepoCache, excerpt *BugExcerpt) bool {
49 for _, l := range excerpt.Labels {
50 if string(l) == label {
51 return true
52 }
53 }
54 return false
55 }
56}
57
58// ActorFilter return a Filter that match a bug actor
59func ActorFilter(query string) Filter {
60 return func(repoCache *RepoCache, excerpt *BugExcerpt) bool {
61 query = strings.ToLower(query)
62
63 for _, id := range excerpt.Actors {
64 identityExcerpt, ok := repoCache.identitiesExcerpts[id]
65 if !ok {
66 panic("missing identity in the cache")
67 }
68
69 if strings.Contains(strings.ToLower(identityExcerpt.Name), query) ||
70 query == identityExcerpt.Id || query == strings.ToLower(identityExcerpt.Login) {
71 return true
72 }
73 }
74
75 return false
76 }
77}
78
79// ParticipantFilter return a Filter that match a bug participant
80func ParticipantFilter(query string) Filter {
81 return func(repoCache *RepoCache, excerpt *BugExcerpt) bool {
82 query = strings.ToLower(query)
83
84 for _, id := range excerpt.Participants {
85 identityExcerpt, ok := repoCache.identitiesExcerpts[id]
86 if !ok {
87 panic("missing identity in the cache")
88 }
89
90 if strings.Contains(strings.ToLower(identityExcerpt.Name), query) ||
91 query == identityExcerpt.Id || query == strings.ToLower(identityExcerpt.Login) {
92 return true
93 }
94 }
95
96 return false
97 }
98}
99
100// TitleFilter return a Filter that match if the title contains the given query
101func TitleFilter(query string) Filter {
102 return func(repo *RepoCache, excerpt *BugExcerpt) bool {
103 return strings.Contains(
104 strings.ToLower(excerpt.Title),
105 strings.ToLower(query),
106 )
107 }
108}
109
110// NoLabelFilter return a Filter that match the absence of labels
111func NoLabelFilter() Filter {
112 return func(repoCache *RepoCache, excerpt *BugExcerpt) bool {
113 return len(excerpt.Labels) == 0
114 }
115}
116
117// Filters is a collection of Filter that implement a complex filter
118type Filters struct {
119 Status []Filter
120 Author []Filter
121 Actor []Filter
122 Participant []Filter
123 Label []Filter
124 Title []Filter
125 NoFilters []Filter
126}
127
128// Match check if a bug match the set of filters
129func (f *Filters) Match(repoCache *RepoCache, excerpt *BugExcerpt) bool {
130 if match := f.orMatch(f.Status, repoCache, excerpt); !match {
131 return false
132 }
133
134 if match := f.orMatch(f.Author, repoCache, excerpt); !match {
135 return false
136 }
137
138 if match := f.orMatch(f.Participant, repoCache, excerpt); !match {
139 return false
140 }
141
142 if match := f.orMatch(f.Actor, repoCache, excerpt); !match {
143 return false
144 }
145
146 if match := f.andMatch(f.Label, repoCache, excerpt); !match {
147 return false
148 }
149
150 if match := f.andMatch(f.NoFilters, repoCache, excerpt); !match {
151 return false
152 }
153
154 if match := f.andMatch(f.Title, repoCache, excerpt); !match {
155 return false
156 }
157
158 return true
159}
160
161// Check if any of the filters provided match the bug
162func (*Filters) orMatch(filters []Filter, repoCache *RepoCache, excerpt *BugExcerpt) bool {
163 if len(filters) == 0 {
164 return true
165 }
166
167 match := false
168 for _, f := range filters {
169 match = match || f(repoCache, excerpt)
170 }
171
172 return match
173}
174
175// Check if all of the filters provided match the bug
176func (*Filters) andMatch(filters []Filter, repoCache *RepoCache, excerpt *BugExcerpt) bool {
177 if len(filters) == 0 {
178 return true
179 }
180
181 match := true
182 for _, f := range filters {
183 match = match && f(repoCache, excerpt)
184 }
185
186 return match
187}