package main

import (
	"fmt"
	"path/filepath"
	"strings"
)

// banner is the colored startup line: name/"v"/info white-bold, version yellow,
// path green.
func banner() string {
	if useColor {
		wb := cBold + cWhite
		return fmt.Sprintf("%smgsh%s %sv%s%s%s%s %s%s,%s %s%s%s",
			wb, cReset, // mgsh
			wb, cReset, cYellow, VERSION, cReset, // v (white) + version (yellow)
			wb, INFO, cReset, // mwx'2026, (white)
			cGreen, BASE, cReset) // path (green)
	}
	return fmt.Sprintf("mgsh v%s %s, %s", VERSION, INFO, BASE)
}

func promptString() string {
	if useColor {
		return coloredPrompt()
	}
	return plainPrompt()
}

func plainPrompt() string {
	base := filepath.Base(BASE)
	if PRJ != "" && isDir(BASE+"/"+PRJ) {
		p := base + "/" + PRJ + BPLSTATE
		if BRANCH != "" {
			p += " (" + BRANCH
			if DIRTY {
				p += "*"
			}
			p += ")"
		}
		return p + " > "
	}
	return base + " > "
}

func coloredPrompt() string {
	var b strings.Builder
	b.WriteString(cBold + cViolet + "< " + cReset)
	b.WriteString(cBlue + filepath.Base(BASE) + cReset)
	if PRJ != "" && isDir(BASE+"/"+PRJ) {
		b.WriteString(cBold + cWhite + "/" + cReset + cBold + cGreen + PRJ + cReset)
		if BPLSTATE != "" {
			b.WriteString(cRed + BPLSTATE + cReset)
		}
		if BRANCH != "" {
			b.WriteString(cDark + " (" + cReset + cBlue + BRANCH + cReset)
			if DIRTY {
				b.WriteString(cRed + "*" + cReset)
			}
			b.WriteString(cDark + ")" + cReset)
		}
	}
	b.WriteString(" " + cBold + cViolet + ">" + cReset + " ")
	return b.String()
}