// The dmenu module's tool (novox/hq research 026/04, 026/05): show the operator a menu of choices in
// the graphical session and answer the one chosen — the dmenu-compatible command as a tool. A Go
// bundle the node's runtime launches over stdio (ADR 0188, ADR 0193). It runs as the operator account
// and reaches the account's X session as session.go finds it; with no session, it says so.
package main

import (
	"fmt"
	"os"

	stdio "git.novox.be/novox/mesh-sdk/go"
)

var providedBy = map[string]string{
	"dmenu": "the dmenu package, which this module installs",
}

func main() {
	if err := stdio.Serve("", tools()); err != nil {
		fmt.Fprintln(os.Stderr, err)
		os.Exit(1)
	}
}

func tools() []stdio.Tool {
	return []stdio.Tool{
		{
			Name: "dmenu_menu",
			Description: "Show the operator a menu of choices on their screen and answer the line chosen, its index, or " +
				"that the menu was dismissed or not answered in time (default 20 s, at most 25). The operator may also " +
				"type a line that is not a choice. Needs the operator's graphical session. (d)",
			Input: map[string]any{
				"choices":          map[string]any{"type": "array", "items": map[string]any{"type": "string"}, "description": "the lines to choose from, at most 1000, none with a line break"},
				"prompt":           map[string]any{"type": "string", "description": "a prompt shown left of the input"},
				"lines":            map[string]any{"type": "integer", "description": "show the choices as a vertical list of this many lines (default 0: one horizontal line; at most 40)"},
				"case_insensitive": map[string]any{"type": "boolean", "description": "match what is typed regardless of case (default true)"},
				"timeout_seconds":  map[string]any{"type": "integer", "description": "close the menu unanswered after this long (default 20, at most 25)"},
			},
			Run: func(args map[string]any) (any, error) {
				choices, err := optList(args, "choices")
				if err != nil {
					return nil, err
				}
				prompt, err := optText(args, "prompt", "")
				if err != nil {
					return nil, err
				}
				n, err := optWhole(args, "lines", 0, 0, 40)
				if err != nil {
					return nil, err
				}
				ci, err := optFlag(args, "case_insensitive", true)
				if err != nil {
					return nil, err
				}
				timeout, err := optWhole(args, "timeout_seconds", 20, 1, MostWait)
				if err != nil {
					return nil, err
				}
				return Menu(Ask{Choices: choices, Prompt: prompt, Lines: n, CaseInsensitive: ci, Timeout: timeout})
			},
		},
		{
			Name:        "dmenu_session",
			Description: "Which X session the menu would appear in and how it was found, or why there is none; and dmenu's version. (r)",
			Input:       map[string]any{},
			Run:         func(map[string]any) (any, error) { return SessionCheck() },
		},
	}
}