Replaced direct access to PackageManager to get discovery protocols

Previously the function GetConnectedBoards() counter-intuitively
returned a list of port address. Now it has been reneamed
GetAvailablePorts() and returns the full Port object that is mapped into
an array of Addresses or into an array of Prorocols based on the
auto-completion request.

internal/cli/arguments/completion.go

@@ -45,34 +45,6 @@ func GetInstalledBoards() []string {
 	return res
 }
 
-// GetInstalledProtocols is an helper function useful to autocomplete.
-// It returns a list of protocols available based on the installed boards
-func GetInstalledProtocols() []string {
-	inst := instance.CreateAndInit()
-
-	boards := pme.InstalledBoards()
-
-	installedProtocols := make(map[string]struct{})
-	for _, board := range boards {
-		for _, protocol := range board.Properties.SubTree("upload.tool").FirstLevelKeys() {
-			if protocol == "default" {
-				// default is used as fallback when trying to upload to a board
-				// using a protocol not defined for it, it's useless showing it
-				// in autocompletion
-				continue
-			}
-			installedProtocols[protocol] = struct{}{}
-		}
-	}
-	res := make([]string, len(installedProtocols))
-	i := 0
-	for k := range installedProtocols {
-		res[i] = k
-		i++
-	}
-	return res
-}
-
 // GetInstalledProgrammers is an helper function useful to autocomplete.
 // It returns a list of programmers available based on the installed boards
 func GetInstalledProgrammers() []string {
@@ -188,19 +160,19 @@ func GetInstallableLibs() []string {
 	return res
 }
 
-// GetConnectedBoards is an helper function useful to autocomplete.
-// It returns a list of boards which are currently connected
-// Obviously it does not suggests network ports because of the timeout
-func GetConnectedBoards() []string {
+// GetAvailablePorts is an helper function useful to autocomplete.
+// It returns a list of upload port of the boards which are currently connected.
+// It will not suggests network ports because the timeout is not set.
+func GetAvailablePorts() []*rpc.Port {
 	inst := instance.CreateAndInit()
 
 	list, _, _ := board.List(&rpc.BoardListRequest{
 		Instance: inst,
 	})
-	var res []string
+	var res []*rpc.Port
 	// transform the data structure for the completion
 	for _, i := range list {
-		res = append(res, i.Port.Address)
+		res = append(res, i.Port)
 	}
 	return res
 }

internal/cli/arguments/port.go

@@ -22,6 +22,7 @@ import (
 
 	"github.com/arduino/arduino-cli/arduino"
 	"github.com/arduino/arduino-cli/commands/board"
+	f "github.com/arduino/arduino-cli/internal/algorithms"
 	"github.com/arduino/arduino-cli/internal/cli/feedback"
 	rpc "github.com/arduino/arduino-cli/rpc/cc/arduino/cli/commands/v1"
 	"github.com/sirupsen/logrus"
@@ -41,11 +42,11 @@ type Port struct {
 func (p *Port) AddToCommand(cmd *cobra.Command) {
 	cmd.Flags().StringVarP(&p.address, "port", "p", "", tr("Upload port address, e.g.: COM3 or /dev/ttyACM2"))
 	cmd.RegisterFlagCompletionFunc("port", func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
-		return GetConnectedBoards(), cobra.ShellCompDirectiveDefault
+		return f.Map(GetAvailablePorts(), (*rpc.Port).GetAddress), cobra.ShellCompDirectiveDefault
 	})
 	cmd.Flags().StringVarP(&p.protocol, "protocol", "l", "", tr("Upload port protocol, e.g: serial"))
 	cmd.RegisterFlagCompletionFunc("protocol", func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
-		return GetInstalledProtocols(), cobra.ShellCompDirectiveDefault
+		return f.Map(GetAvailablePorts(), (*rpc.Port).GetProtocol), cobra.ShellCompDirectiveDefault
 	})
 	p.timeout.AddToCommand(cmd)
 }

internal/integrationtest/completion/completion_test.go

@@ -216,16 +216,10 @@ func TestCoreCompletion(t *testing.T) {
 	require.Contains(t, string(stdout), "arduino:avr:uno")
 	stdout, _, _ = cli.Run("__complete", "monitor", "-b", "")
 	require.Contains(t, string(stdout), "arduino:avr:uno")
-	stdout, _, _ = cli.Run("__complete", "burn-bootloader", "-l", "")
-	require.Contains(t, string(stdout), "network")
-	stdout, _, _ = cli.Run("__complete", "compile", "-l", "")
-	require.Contains(t, string(stdout), "network")
-	stdout, _, _ = cli.Run("__complete", "debug", "-l", "")
-	require.Contains(t, string(stdout), "network")
-	stdout, _, _ = cli.Run("__complete", "upload", "-l", "")
-	require.Contains(t, string(stdout), "network")
-	stdout, _, _ = cli.Run("__complete", "monitor", "-l", "")
-	require.Contains(t, string(stdout), "network")
+
+	// -l/--protocol and -p/--port cannot be tested because there are
+	// no board connected.
+
 	stdout, _, _ = cli.Run("__complete", "burn-bootloader", "-P", "")
 	require.Contains(t, string(stdout), "atmel_ice")
 	stdout, _, _ = cli.Run("__complete", "compile", "-P", "")