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// gomuks - A terminal Matrix client written in Go.
// Copyright (C) 2019 Tulir Asokan
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package widget
import (
"fmt"
"hash/fnv"
"maunium.net/go/tcell"
)
var colorNames = []string{
"maroon",
"green",
"olive",
"navy",
"purple",
"teal",
"silver",
"gray",
"red",
"lime",
"yellow",
"blue",
"fuchsia",
"aqua",
"white",
"aliceblue",
"antiquewhite",
"aquamarine",
"azure",
"beige",
"bisque",
"blanchedalmond",
"blueviolet",
"brown",
"burlywood",
"cadetblue",
"chartreuse",
"chocolate",
"coral",
"cornflowerblue",
"cornsilk",
"crimson",
"darkblue",
"darkcyan",
"darkgoldenrod",
"darkgray",
"darkgreen",
"darkkhaki",
"darkmagenta",
"darkolivegreen",
"darkorange",
"darkorchid",
"darkred",
"darksalmon",
"darkseagreen",
"darkslateblue",
"darkslategray",
"darkturquoise",
"darkviolet",
"deeppink",
"deepskyblue",
"dimgray",
"dodgerblue",
"firebrick",
"floralwhite",
"forestgreen",
"gainsboro",
"ghostwhite",
"gold",
"goldenrod",
"greenyellow",
"honeydew",
"hotpink",
"indianred",
"indigo",
"ivory",
"khaki",
"lavender",
"lavenderblush",
"lawngreen",
"lemonchiffon",
"lightblue",
"lightcoral",
"lightcyan",
"lightgoldenrodyellow",
"lightgray",
"lightgreen",
"lightpink",
"lightsalmon",
"lightseagreen",
"lightskyblue",
"lightslategray",
"lightsteelblue",
"lightyellow",
"limegreen",
"linen",
"mediumaquamarine",
"mediumblue",
"mediumorchid",
"mediumpurple",
"mediumseagreen",
"mediumslateblue",
"mediumspringgreen",
"mediumturquoise",
"mediumvioletred",
"midnightblue",
"mintcream",
"mistyrose",
"moccasin",
"navajowhite",
"oldlace",
"olivedrab",
"orange",
"orangered",
"orchid",
"palegoldenrod",
"palegreen",
"paleturquoise",
"palevioletred",
"papayawhip",
"peachpuff",
"peru",
"pink",
"plum",
"powderblue",
"rebeccapurple",
"rosybrown",
"royalblue",
"saddlebrown",
"salmon",
"sandybrown",
"seagreen",
"seashell",
"sienna",
"skyblue",
"slateblue",
"slategray",
"snow",
"springgreen",
"steelblue",
"tan",
"thistle",
"tomato",
"turquoise",
"violet",
"wheat",
"whitesmoke",
"yellowgreen",
"grey",
"dimgrey",
"darkgrey",
"darkslategrey",
"lightgrey",
"lightslategrey",
"slategrey",
}
// GetHashColorName gets a color name for the given string based on its FNV-1 hash.
//
// The array of possible color names are the alphabetically ordered color
// names specified in tcell.ColorNames.
//
// The algorithm to get the color is as follows:
// colorNames[ FNV1(string) % len(colorNames) ]
//
// With the exception of the three special cases:
// --> = green
// <-- = red
// --- = yellow
func GetHashColorName(s string) string {
switch s {
case "-->":
return "green"
case "<--":
return "red"
case "---":
return "yellow"
default:
h := fnv.New32a()
_, _ = h.Write([]byte(s))
return colorNames[h.Sum32()%uint32(len(colorNames))]
}
}
// GetHashColor gets the tcell Color value for the given string.
//
// GetHashColor calls GetHashColorName() and gets the Color value from the tcell.ColorNames map.
func GetHashColor(s string) tcell.Color {
return tcell.ColorNames[GetHashColorName(s)]
}
// AddColor adds tview color tags to the given string.
func AddColor(s, color string) string {
return fmt.Sprintf("[%s]%s[white]", color, s)
}
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