79 lines
2.3 KiB
Go
79 lines
2.3 KiB
Go
package engine
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import (
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"fmt"
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"strings"
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)
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// HandlerFunc is the handler type for a menu item
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type HandlerFunc func(*Session)
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// Exit is a built-in handler that terminates the session
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var Exit HandlerFunc = func(s *Session) { s.Quit = true }
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type menuItem struct {
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Key string
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Label string
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Color string
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Handler HandlerFunc
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}
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// Menu defines the BBS main menu using a declarative DSL
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type Menu struct {
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title string
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items []menuItem
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}
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// Title sets the menu header
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func (m *Menu) Title(t string) {
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m.title = t
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}
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// Item adds a menu entry (key, display label, ANSI color, handler)
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func (m *Menu) Item(key, label, color string, handler HandlerFunc) {
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m.items = append(m.items, menuItem{
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Key: strings.ToUpper(key),
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Label: label,
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Color: color,
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Handler: handler,
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})
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}
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// Dispatch finds and calls the handler for the given key
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func (m *Menu) Dispatch(s *Session, key string) {
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key = strings.ToUpper(strings.TrimSpace(key))
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for _, item := range m.items {
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if item.Key == key {
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item.Handler(s)
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return
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}
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}
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}
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// Render returns the rendered menu string
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func (m *Menu) Render(p *Printer, lang T, username string) string {
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headerLine := strings.Repeat("═", W)
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l1 := p.PadLine(fmt.Sprintf(" %s%s%s %s@%s%s", COLOR_YELLOW, m.title, COLOR_RESET, COLOR_GRAY, username, COLOR_RESET), W)
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var rows []string
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for i := 0; i < len(m.items); i += 2 {
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if i+1 < len(m.items) {
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left := p.PadLine(fmt.Sprintf(" %s[%s]%s %s", m.items[i].Color, m.items[i].Key, COLOR_RESET, m.items[i].Label), W/2)
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right := p.PadLine(fmt.Sprintf(" %s[%s]%s %s", m.items[i+1].Color, m.items[i+1].Key, COLOR_RESET, m.items[i+1].Label), W/2)
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rows = append(rows, left+right)
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} else {
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rows = append(rows, p.PadLine(fmt.Sprintf(" %s[%s]%s %s", m.items[i].Color, m.items[i].Key, COLOR_RESET, m.items[i].Label), W))
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}
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}
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var sb strings.Builder
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sb.WriteString(fmt.Sprintf("\n%s╔%s╗%s\n", COLOR_WHITE, headerLine, COLOR_RESET))
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sb.WriteString(fmt.Sprintf("%s║%s%s║%s\n", COLOR_WHITE, l1, COLOR_WHITE, COLOR_RESET))
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sb.WriteString(fmt.Sprintf("%s╠%s╣%s\n", COLOR_WHITE, headerLine, COLOR_RESET))
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for _, row := range rows {
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sb.WriteString(fmt.Sprintf("%s║%s%s║%s\n", COLOR_WHITE, row, COLOR_WHITE, COLOR_RESET))
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}
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sb.WriteString(fmt.Sprintf("%s╚%s╝%s\n%s", COLOR_WHITE, headerLine, COLOR_RESET, lang["Choice"]))
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return sb.String()
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}
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