package notify

import (
	"context"
	"os"
	"path/filepath"
	"runtime"
	"strings"
	"testing"
)

// TestShowCallsNotifySend: on Linux, Show goes through notify-send; here a
// fake in PATH that records its arguments (a real process, no mock
// framework). Title and text arrive unchanged.
func TestShowCallsNotifySend(t *testing.T) {
	if runtime.GOOS != "linux" {
		t.Skip("the notify-send path exists only on Linux")
	}
	dir := t.TempDir()
	seen := filepath.Join(dir, "seen.txt")
	script := "#!/bin/sh\nprintf '%s\\n' \"$@\" > \"" + seen + "\"\n"
	if err := os.WriteFile(filepath.Join(dir, "notify-send"), []byte(script), 0o755); err != nil {
		t.Fatal(err)
	}
	t.Setenv("PATH", dir)

	if !Available() {
		t.Fatal("Available = false with fake in PATH")
	}
	if err := Show(context.Background(), "quiet hours: build done"); err != nil {
		t.Fatalf("Show: %v", err)
	}
	b, err := os.ReadFile(seen)
	if err != nil {
		t.Fatal(err)
	}
	args := strings.Split(strings.TrimSpace(string(b)), "\n")
	if args[len(args)-1] != "quiet hours: build done" || args[len(args)-2] != Title {
		t.Errorf("notify-send arguments = %q, want ... %q %q", args, Title, "quiet hours: build done")
	}
}

// TestShowWithoutTool: a missing tool is a clear error.
func TestShowWithoutTool(t *testing.T) {
	t.Setenv("PATH", t.TempDir())
	if Available() {
		t.Fatal("Available = true without tool")
	}
	if err := Show(context.Background(), "x"); err == nil {
		t.Error("Show without tool: no error")
	}
	if !strings.Contains(Describe(), "not found") {
		t.Errorf("Describe = %q", Describe())
	}
}

func TestAppleString(t *testing.T) {
	if got := appleString(`say "hello" \ bye`); got != `"say \"hello\" \\ bye"` {
		t.Errorf("appleString = %s", got)
	}
}