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package bug
import (
"crypto/sha1"
"fmt"
"io"
"strings"
"github.com/MichaelMure/git-bug/util/text"
)
// RGBColor is a color type in the form red, green, blue
type RGBColor struct {
red uint8
green uint8
blue uint8
}
type Label string
func (l Label) String() string {
return string(l)
}
// RGBColor from a Label computed in a deterministic way
func (l Label) RGBColor() RGBColor {
id := 0
hash := sha1.Sum([]byte(l))
// colors from: https://material-ui.com/style/color/
colors := []RGBColor{
RGBColor{red: 244, green: 67, blue: 54}, // red
RGBColor{red: 233, green: 30, blue: 99}, // pink
RGBColor{red: 156, green: 39, blue: 176}, // purple
RGBColor{red: 103, green: 58, blue: 183}, // deepPurple
RGBColor{red: 63, green: 81, blue: 181}, // indigo
RGBColor{red: 33, green: 150, blue: 243}, // blue
RGBColor{red: 3, green: 169, blue: 244}, // lightBlue
RGBColor{red: 0, green: 188, blue: 212}, // cyan
RGBColor{red: 0, green: 150, blue: 136}, // teal
RGBColor{red: 76, green: 175, blue: 80}, // green
RGBColor{red: 139, green: 195, blue: 74}, // lightGreen
RGBColor{red: 205, green: 220, blue: 57}, // lime
RGBColor{red: 255, green: 235, blue: 59}, // yellow
RGBColor{red: 255, green: 193, blue: 7}, // amber
RGBColor{red: 255, green: 152, blue: 0}, // orange
RGBColor{red: 255, green: 87, blue: 34}, // deepOrange
RGBColor{red: 121, green: 85, blue: 72}, // brown
RGBColor{red: 158, green: 158, blue: 158}, // grey
RGBColor{red: 96, green: 125, blue: 139}, // blueGrey
}
for _, char := range hash {
id = (id + int(char)) % len(colors)
}
return colors[id]
}
// UnmarshalGQL implements the graphql.Unmarshaler interface
func (l *Label) UnmarshalGQL(v interface{}) error {
_, ok := v.(string)
if !ok {
return fmt.Errorf("labels must be strings")
}
*l = v.(Label)
return nil
}
// MarshalGQL implements the graphql.Marshaler interface
func (l Label) MarshalGQL(w io.Writer) {
_, _ = w.Write([]byte(`"` + l.String() + `"`))
}
func (l Label) Validate() error {
str := string(l)
if text.Empty(str) {
return fmt.Errorf("empty")
}
if strings.Contains(str, "\n") {
return fmt.Errorf("should be a single line")
}
if !text.Safe(str) {
return fmt.Errorf("not fully printable")
}
return nil
}
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