// adwaita's tools (novox/hq ADR 0208, research 026/05): appearance (dark or light for GTK, Qt and the
// portal at once), cursor, icons and portal-check. The predecessor's appearance script is folded into
// the first, and into the module's session line.
//
// None needs the display except setting the cursor's X resources: GSettings, the portal and the user
// manager are reached on the account's own bus, which exists whenever the operator's user manager
// runs.
package main

import (
	"context"
	"fmt"
	"os"
	"path/filepath"
	"time"

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

	"adwaita/internal/desktop"
)

func main() {
	home := desktop.Home()
	a := adwaita{
		d: desktop.Machine("i3", "sway"), home: home,
		iconDirs:   []string{filepath.Join(home, ".local", "share", "icons"), filepath.Join(home, ".icons"), "/usr/local/share/icons", "/usr/share/icons"},
		portalDirs: []string{"/usr/share/xdg-desktop-portal/portals"},
		uid:        os.Getuid(),
	}
	if err := stdio.Serve("", tools(a)); 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(a adwaita) []stdio.Tool {
	return []stdio.Tool{
		{
			Name: "adwaita_appearance",
			Description: "Dark or light, as each audience sees it now: GSettings (which the portal serves to " +
				"Electron, Firefox and flatpaks), the portal's own answer, the GTK settings files, Qt's palette " +
				"and the theme words in the user manager's environment. With mode, switch GSettings for the " +
				"running session and answer which audiences follow live and which keep the module's dark " +
				"default until it is a setting.",
			Input: desktop.Schema(map[string]any{"mode": desktop.Enum("switch to (optional)", "dark", "light")}),
			Run:   call(a.appearance),
		},
		{
			Name: "adwaita_cursor",
			Description: "The cursor theme and size in force (GSettings, the X resources, XCURSOR_* in the user " +
				"manager) and the cursor themes installed. With theme and/or size, set them for windows opened " +
				"from now on; the module's defaults return at the next login.",
			Input: desktop.Schema(map[string]any{
				"theme": desktop.Str("an installed cursor theme"),
				"size":  desktop.Int("pixels, 8 to 256"),
			}),
			Run: call(a.cursor),
		},
		{
			Name: "adwaita_icons",
			Description: "The icon themes installed (name, where, what each inherits, whether it carries cursors) " +
				"and the one GTK and Qt are set to use.",
			Input: desktop.Schema(map[string]any{}),
			Run:   call(a.icons),
		},
		{
			Name: "adwaita_portal_check",
			Description: "Which xdg-desktop-portal backend answers which interface for this desktop: the backends " +
				"installed and what they implement, the portals.conf that decides (and which one won), the " +
				"resulting backend per interface, whether the portal and each backend are running on the " +
				"account's bus, and the colour scheme the portal answers.",
			Input: desktop.Schema(map[string]any{}),
			Run:   call(a.portalCheck),
		},
	}
}