1package bug
 2
 3import (
 4	"fmt"
 5	"io"
 6	"strings"
 7
 8	"github.com/MichaelMure/git-bug/util/text"
 9)
10
11type Color struct {
12	red uint8
13	green uint8
14	blue uint8
15}
16
17type Label string
18
19func (l Label) String() string {
20	return string(l)
21}
22
23func (l Label) Color() Color {
24	label := string(l)
25	id := 0
26
27	// colors from: https://material-ui.com/style/color/
28	colors := []Color{
29		Color{red: 244, green: 67, blue: 54}, // red
30		Color{red: 233, green: 30, blue: 99}, // pink
31		Color{red: 156, green: 39, blue: 176}, // purple
32		Color{red: 103, green: 58, blue: 183}, // deepPurple
33		Color{red: 63, green: 81, blue: 181}, // indigo
34		Color{red: 33, green: 150, blue: 243}, // blue
35		Color{red: 3, green: 169, blue: 244}, // lightBlue
36		Color{red: 0, green: 188, blue: 212}, // cyan
37		Color{red: 0, green: 150, blue: 136}, // teal
38		Color{red: 76, green: 175, blue: 80}, // green
39		Color{red: 139, green: 195, blue: 74}, // lightGreen
40		Color{red: 205, green: 220, blue: 57}, // lime
41		Color{red: 255, green: 235, blue: 59}, // yellow
42		Color{red: 255, green: 193, blue: 7}, // amber
43		Color{red: 255, green: 152, blue: 0}, // orange
44		Color{red: 255, green: 87, blue: 34}, // deepOrange
45		Color{red: 121, green: 85, blue: 72}, // brown
46		Color{red: 158, green: 158, blue: 158}, // grey
47		Color{red: 96, green: 125, blue: 139}, // blueGrey
48	}
49
50	for pos, char := range label {
51		id = (pos + id + int(char)) % len(colors)
52	}
53
54	return colors[id]
55}
56
57// UnmarshalGQL implements the graphql.Unmarshaler interface
58func (l *Label) UnmarshalGQL(v interface{}) error {
59	_, ok := v.(string)
60	if !ok {
61		return fmt.Errorf("labels must be strings")
62	}
63
64	*l = v.(Label)
65
66	return nil
67}
68
69// MarshalGQL implements the graphql.Marshaler interface
70func (l Label) MarshalGQL(w io.Writer) {
71	_, _ = w.Write([]byte(`"` + l.String() + `"`))
72}
73
74func (l Label) Validate() error {
75	str := string(l)
76
77	if text.Empty(str) {
78		return fmt.Errorf("empty")
79	}
80
81	if strings.Contains(str, "\n") {
82		return fmt.Errorf("should be a single line")
83	}
84
85	if !text.Safe(str) {
86		return fmt.Errorf("not fully printable")
87	}
88
89	return nil
90}