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package bug
import (
"crypto/sha1"
"fmt"
"image/color"
"strings"
"github.com/MichaelMure/git-bug/util/text"
)
type Label string
func (l Label) String() string {
return string(l)
}
type LabelColor color.RGBA
// RGBA from a Label computed in a deterministic way
func (l Label) Color() LabelColor {
id := 0
hash := sha1.Sum([]byte(l))
// colors from: https://material-ui.com/style/color/
colors := []LabelColor{
LabelColor{R: 244, G: 67, B: 54, A: 255}, // red
LabelColor{R: 233, G: 30, B: 99, A: 255}, // pink
LabelColor{R: 156, G: 39, B: 176, A: 255}, // purple
LabelColor{R: 103, G: 58, B: 183, A: 255}, // deepPurple
LabelColor{R: 63, G: 81, B: 181, A: 255}, // indigo
LabelColor{R: 33, G: 150, B: 243, A: 255}, // blue
LabelColor{R: 3, G: 169, B: 244, A: 255}, // lightBlue
LabelColor{R: 0, G: 188, B: 212, A: 255}, // cyan
LabelColor{R: 0, G: 150, B: 136, A: 255}, // teal
LabelColor{R: 76, G: 175, B: 80, A: 255}, // green
LabelColor{R: 139, G: 195, B: 74, A: 255}, // lightGreen
LabelColor{R: 205, G: 220, B: 57, A: 255}, // lime
LabelColor{R: 255, G: 235, B: 59, A: 255}, // yellow
LabelColor{R: 255, G: 193, B: 7, A: 255}, // amber
LabelColor{R: 255, G: 152, B: 0, A: 255}, // orange
LabelColor{R: 255, G: 87, B: 34, A: 255}, // deepOrange
LabelColor{R: 121, G: 85, B: 72, A: 255}, // brown
LabelColor{R: 158, G: 158, B: 158, A: 255}, // grey
LabelColor{R: 96, G: 125, B: 139, A: 255}, // blueGrey
}
for _, char := range hash {
id = (id + int(char)) % len(colors)
}
return colors[id]
}
func (lc LabelColor) RGBA() color.RGBA {
return color.RGBA(lc)
}
type Term256 int
func (lc LabelColor) Term256() Term256 {
red := Term256(lc.R) * 6 / 256
green := Term256(lc.G) * 6 / 256
blue := Term256(lc.B) * 6 / 256
return red*36 + green*6 + blue + 16
}
func (t Term256) Escape() string {
return fmt.Sprintf("\x1b[38;5;%dm", t)
}
func (t Term256) Unescape() string {
return "\x1b[0m"
}
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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