package main

import (
	"reflect"
	"strings"
	"testing"
)

// dunst's shape (novox/hq ADR 0208): it claims node-notifier serving send and history, owns its
// dunstrc and the drop-in directory other modules' rules go in, and starts nothing — D-Bus starts it
// on the first notification; the mesh only tells a running one to read its file again. It draws only once a notification arrives, through the bus's
// activation, so it requires no display of its own.

func TestItClaimsTheNotifierSeatServingSendAndHistory(t *testing.T) {
	m := readManifest(t)
	if m.Module != "dunst" || m.Seats != nil {
		t.Fatalf("module %q declares seats %v", m.Module, m.Seats)
	}
	if !reflect.DeepEqual(m.Claims, []claim{{Name: "node-notifier", Scope: "node", Serves: []string{"send", "history"}}}) {
		t.Fatalf("claims: %+v", m.Claims)
	}
	// rofi, the context menu the dunstrc calls by name, is the rofi module's package: two modules on one
	// machine may not declare the same package, and the rofi module holds node-launcher on every
	// machine dunst serves.
	if present, absent := m.packages(); !reflect.DeepEqual(present, []string{"dunst", "libnotify"}) || absent != nil {
		t.Fatalf("packages: %v, absent %v", present, absent)
	}
}

func TestItOwnsItsFileAndTheDropInDirectory(t *testing.T) {
	m := readManifest(t)
	m.sameAsSource(t, "configuration", "files/dunstrc")
	if p := m.resource(t, "configuration")["path"]; p != "${machine:account-home}/.config/dunst/dunstrc" {
		t.Fatalf("path: %v", p)
	}
	if d := m.resource(t, "dropins"); d["type"] != "directory" || d["path"] != "${machine:account-home}/.config/dunst/dunstrc.d" {
		t.Fatalf("drop-ins: %v", d)
	}
	for _, r := range m.Resources {
		if p, _ := r["path"].(string); strings.Contains(p, "dunstrc.d/") {
			t.Fatalf("a rule of another module's: %v", r)
		}
	}
}

func TestTheFileIsTheDecidedOneAndCallsRofi(t *testing.T) {
	m := readManifest(t)
	c := m.resource(t, "configuration")["content"].(string)
	for _, want := range []string{"origin = top-right", "transparency = 0", "corner_radius = 0", "font = Inter ${setting:font-size}",
		"width = ${setting:width}", "dmenu = rofi -dmenu -no-custom -p dunst"} {
		if !strings.Contains(c, "    "+want+"\n") {
			t.Errorf("lacks %q", want)
		}
	}
	// Not the node-launcher's `dmenu` in ~/.local/bin: dunst's service manager has no such directory on
	// its PATH, so that menu never opened.
	for _, never := range []string{"/usr/bin/dmenu", "dmenu = dmenu", "Hack", "icon_path", "/home/"} {
		if strings.Contains(c, never) {
			t.Errorf("names %q", never)
		}
	}
}

// A tap chooses (the operator's touchpads have no middle button): the left click is dunst's do_action
// and then close_current, so a notification with one action runs it, one with several opens the menu
// of them (dunst holds it open until the menu answers, and an Escape leaves it shown), and one without
// actions closes. Every other click is as it was.
func TestATapChoosesTheNotificationsAction(t *testing.T) {
	m := readManifest(t)
	c := m.resource(t, "configuration")["content"].(string)
	for _, want := range []string{"mouse_left_click = do_action, close_current",
		"mouse_middle_click = do_action, close_current", "mouse_right_click = close_all"} {
		if !strings.Contains(c, "    "+want+"\n") {
			t.Errorf("lacks %q", want)
		}
	}
	if strings.Count(c, "mouse_left_click") != 1 {
		t.Errorf("sets mouse_left_click more than once")
	}
}

// The key that chooses from the keyboard is a line i3 places from this contribution (novox/hq ADR
// 0212): a binding only, never a start, so the bus stays the only thing that starts dunst.
func TestTheMenuKeyIsABindingI3Places(t *testing.T) {
	m := readManifest(t)
	m.i3LinesAreSource(t, "files/i3/50-dunst.conf")
	lines := m.i3Lines()
	if !strings.Contains(lines, "bindsym $mod+n exec --no-startup-id dunstctl context\n") {
		t.Fatalf("no key for the context menu: %s", lines)
	}
	for _, l := range strings.Split(lines, "\n") {
		if l = strings.TrimSpace(l); l != "" && !strings.HasPrefix(l, "#") && !strings.HasPrefix(l, "bindsym ") {
			t.Errorf("a line that is not a key: %q", l)
		}
	}
}

// The font size and the width are preferences with today's values as their defaults (novox/hq ADR
// 0262): a machine with a denser screen sets its own, and every other machine's file is unchanged.
func TestTheFontSizeAndWidthAreSettingsWithTodaysDefaults(t *testing.T) {
	m := readManifest(t)
	want := map[string]float64{"font-size": 10, "width": 250}
	if len(m.Settings) != len(want) {
		t.Fatalf("settings: %+v", m.Settings)
	}
	for key, value := range want {
		s, ok := m.Settings[key]
		if !ok || s.Kind != "preference" || s.Default != value || strings.TrimSpace(s.Why) == "" {
			t.Errorf("%s: %+v, want a preference defaulting to %v with why", key, s, value)
		}
	}
	// Filled with the defaults, the file is the one every machine had before it took settings.
	c := m.resource(t, "configuration")["content"].(string)
	c = strings.ReplaceAll(c, "${setting:font-size}", "10")
	c = strings.ReplaceAll(c, "${setting:width}", "250")
	for _, want := range []string{"font = Inter 10", "width = 250"} {
		if !strings.Contains(c, "    "+want+"\n") {
			t.Errorf("filled with the defaults, lacks %q", want)
		}
	}
	if strings.Contains(c, "${setting:") {
		t.Errorf("asks for a setting it gives no default: %s", c)
	}
}

func TestNothingStartsItButTheBus(t *testing.T) {
	m := readManifest(t)
	if m.Shell != nil {
		t.Fatalf("a session start: %+v", m.Shell)
	}
	for _, r := range m.Resources {
		// The one unit it names is the package's own dunst.service, without a state: its lifecycle stays
		// the bus's, and the mesh only reloads it when it is running and its file changed (ADR 0117).
		if r["type"] == "process" || (r["type"] == "service" && (r["state"] != nil || r["boot"] != nil)) {
			t.Fatalf("a unit: %v", r)
		}
		if p, _ := r["path"].(string); strings.Contains(p, "autostart") || strings.Contains(p, "i3/config.d") {
			t.Fatalf("a start: %v", r)
		}
	}
}

func TestTheToolsAgreeWithTheManifest(t *testing.T) {
	m := readManifest(t)
	checkTheToolsAgree(t, m)
	checkNoSecretsOrInstallationNames(t)
}