package windsurf

import "strings"

// SanitizePath scrubs server-internal filesystem paths from model output.
// /tmp/windsurf-workspace/foo → [unmounted-workspace]/foo, /opt/windsurf/… → [internal].
func SanitizePath(s string) string {
	if s == "" {
		return s
	}
	s = replacePathPrefix(s, "/tmp/windsurf-workspace", "[unmounted-workspace]")
	s = replacePathPrefix(s, "/opt/windsurf", "[internal]")
	s = replacePathPrefix(s, "/root/WindsurfAPI", "[internal]")
	return s
}

func replacePathPrefix(s, prefix, replacement string) string {
	for {
		idx := strings.Index(s, prefix)
		if idx < 0 {
			return s
		}
		end := idx + len(prefix)
		if end < len(s) && s[end] == '/' {
			s = s[:idx] + replacement + s[end:]
		} else if end == len(s) || isPathTerminator(s[end]) {
			s = s[:idx] + replacement + s[end:]
		} else {
			s = s[:idx] + replacement + s[end:]
		}
	}
}

func isPathTerminator(b byte) bool {
	switch b {
	case ' ', '"', '\'', '`', '<', '>', ')', '}', ']', ',', '*', ';', '\n', '\r', '\t':
		return true
	}
	return false
}