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// TitleFilter return a Filter that match a title
59func TitleFilter(title string) Filter {
60 return func(excerpt *BugExcerpt) bool {
61 if strings.Contains(excerpt.Title, title) {
62 return true
63 }
64 return false
65 }
66
67}
68
69// NoLabelFilter return a Filter that match the absence of labels
70func NoLabelFilter() Filter {
71 return func(repoCache *RepoCache, excerpt *BugExcerpt) bool {
72 return len(excerpt.Labels) == 0
73 }
74}
75
76// Filters is a collection of Filter that implement a complex filter
77type Filters struct {
78 Status []Filter
79 Author []Filter
80 Label []Filter
81 Title []Filter
82 NoFilters []Filter
83}
84
85// Match check if a bug match the set of filters
86func (f *Filters) Match(repoCache *RepoCache, excerpt *BugExcerpt) bool {
87 if match := f.orMatch(f.Status, repoCache, excerpt); !match {
88 return false
89 }
90
91 if match := f.orMatch(f.Author, repoCache, excerpt); !match {
92 return false
93 }
94
95 if match := f.orMatch(f.Label, repoCache, excerpt); !match {
96 return false
97 }
98
99 if match := f.andMatch(f.NoFilters, repoCache, excerpt); !match {
100 return false
101 }
102
103 if match := f.andMatch(f.Title, excerpt); !match {
104 return false
105 }
106
107 return true
108}
109
110// Check if any of the filters provided match the bug
111func (*Filters) orMatch(filters []Filter, repoCache *RepoCache, excerpt *BugExcerpt) bool {
112 if len(filters) == 0 {
113 return true
114 }
115
116 match := false
117 for _, f := range filters {
118 match = match || f(repoCache, excerpt)
119 }
120
121 return match
122}
123
124// Check if all of the filters provided match the bug
125func (*Filters) andMatch(filters []Filter, repoCache *RepoCache, excerpt *BugExcerpt) bool {
126 if len(filters) == 0 {
127 return true
128 }
129
130 match := true
131 for _, f := range filters {
132 match = match && f(repoCache, excerpt)
133 }
134
135 return match
136}