feat: main flow created

internal/tui/cmds.go

@@ -0,0 +1,47 @@
+package tui
+
+import (
+	"os/exec"
+	"time"
+
+	tea "charm.land/bubbletea/v2"
+)
+
+// --- Messages ---
+
+// Docker installation check
+type DockerCheckedMsg struct{ Installed bool }
+type DockerInstalledMsg struct{ Err error }
+type TickMsg struct{}
+
+// Image downloading
+type ImageDownloadFinishedMsg struct {
+	Err error
+}
+type DownloadTickMsg struct{}
+
+// --- Commands ---
+
+func CheckDockerCmd() tea.Cmd {
+	return func() tea.Msg {
+		_, err := exec.LookPath("docker")
+		return DockerCheckedMsg{Installed: err == nil}
+	}
+}
+
+func tickCmd() tea.Cmd {
+	return tea.Tick(100*time.Millisecond, func(t time.Time) tea.Msg {
+		return TickMsg{}
+	})
+}
+
+func downloadImageCmd() tea.Cmd {
+	return func() tea.Msg {
+
+		err := docker.PullImage("hub.davinti.com.br:443/app-dono/app-cliente:latest")
+
+		return ImageDownloadFinishedMsg{
+			Err: err,
+		}
+	}
+}