// xterm's tools (novox/hq ADR 0208, research 026/05): node-terminal-emulator's verb `open`, and the
// module's own `font` and `colours`.
//
// A terminal opened by `open` is handed to the account's own service manager (internal/desktop's
// Launch), never left a child of the runtime, which the service manager empties at every restart.
package main

import (
	"context"
	"fmt"
	"os"
	"time"

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

	"xterm/internal/desktop"
)

func main() {
	if err := stdio.Serve("", tools(xterm{d: desktop.Machine("i3", "sway")})); err != nil {
		fmt.Fprintln(os.Stderr, err)
		os.Exit(1)
	}
}

func call(run func(ctx context.Context, a desktop.Args) (any, error)) func(map[string]any) (any, error) {
	return func(args map[string]any) (any, error) {
		ctx, cancel := context.WithTimeout(context.Background(), 25*time.Second)
		defer cancel()
		return run(ctx, desktop.Args(args))
	}
}

func tools(x xterm) []stdio.Tool {
	return []stdio.Tool{
		{
			Name: "node-terminal-emulator.open",
			Description: "Open a terminal window in the operator's session: the account's login shell, or a command " +
				"run through it, in a directory (the home when none is named). hold keeps the window open after " +
				"the command ends. Answers the unit it runs as.",
			Input: desktop.Schema(map[string]any{
				"command":   desktop.Str("what to run in it (optional; the login shell when absent)"),
				"directory": desktop.Str("where it starts (optional; the account's home)"),
				"title":     desktop.Str("the window's title (optional)"),
				"hold":      desktop.Flag("keep the window open after the command ends (default false)"),
			}),
			Run: call(x.open),
		},
		{
			Name: "xterm_font",
			Description: "The face and size xterm uses, and the installed font that face resolves to. With face " +
				"and/or size, set them for terminals opened from now on (an installed face only); the module's " +
				"resources set the default again at the next login.",
			Input: desktop.Schema(map[string]any{
				"face": desktop.Str("a font family, as fc-list names it"),
				"size": desktop.Num("points, 6 to 48"),
			}),
			Run: call(x.font),
		},
		{
			Name: "xterm_colours",
			Description: "xterm's colours in force: background, foreground, cursor and the sixteen palette entries, " +
				"as #rrggbb, each beside the module's default and whether it differs.",
			Input: desktop.Schema(map[string]any{}),
			Run:   call(x.colours),
		},
	}
}