add AlreadyMounted to config

Signed-off-by: Jason McCallister <jason@craftcms.com>

config/config.go

@@ -11,6 +11,7 @@ import (
 	"gopkg.in/yaml.v2"
 
 	"github.com/craftcms/nitro/internal/helpers"
+	"github.com/craftcms/nitro/internal/resolve"
 )
 
 type Config struct {
@@ -33,6 +34,44 @@ func (c *Config) GetSites() []Site {
 	return c.Sites
 }
 
+// AlreadyMounted takes a new mount and will check if the
+// mount source is already mounted to the virtual machine
+// and will also check if the new mount is a parent mount
+func (c *Config) AlreadyMounted(mount Mount) bool {
+	// get the home directory
+	home, err := homedir.Dir()
+	if err != nil {
+		return false
+	}
+
+	// get the local path of the mount
+	newLocal, err := resolve.AbsPath(mount.Source, home)
+	if err != nil {
+		return false
+	}
+
+	// check each of the mounts in the config
+	for _, m := range c.Mounts {
+		// get the abs path of the existing mount
+		existingLocal, err := resolve.AbsPath(m.Source, home)
+		if err != nil {
+			continue
+		}
+
+		// if it is an exact match
+		if existingLocal == newLocal {
+			return true
+		}
+
+		// if it is a sub folder of the mount
+		if strings.Contains(existingLocal, newLocal) {
+			return true
+		}
+	}
+
+	return false
+}
+
 // GetExpandedMounts will take all of the mounts in a config file
 // and "expand" or get the full path mount source and return
 // a slice of mounts

config/config_test.go

@@ -1,9 +1,11 @@
 package config
 
 import (
+	"os"
 	"reflect"
 	"testing"
 
+	"github.com/mitchellh/go-homedir"
 	"github.com/spf13/viper"
 )
 
@@ -813,3 +815,85 @@ func TestConfig_FindMountBySiteWebroot(t *testing.T) {
 		})
 	}
 }
+
+func TestConfig_AlreadyMounted(t *testing.T) {
+	_, err := homedir.Dir()
+	if err != nil {
+		t.Fatal(err)
+	}
+	current, err := os.Getwd()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	type fields struct {
+		PHP       string
+		Mounts    []Mount
+		Databases []Database
+		Sites     []Site
+	}
+	type args struct {
+		m Mount
+	}
+	tests := []struct {
+		name   string
+		fields fields
+		args   args
+		want   bool
+	}{
+		{
+			name: "mounts that have a parent path return true",
+			fields: fields{
+				Mounts: []Mount{
+					{
+						Source: current + "/testdata/new-mount",
+						Dest:   "/home/ubuntu/sites/example",
+					},
+				},
+			},
+			args: args{m: Mount{
+				Source: current,
+				Dest:   "/home/ubuntu/sites/example",
+			}},
+			want: true,
+		},
+		{
+			name: "mounts that exists return true",
+			fields: fields{
+				Mounts: []Mount{
+					{
+						Source: current,
+						Dest:   "/home/ubuntu/sites/example",
+					},
+				},
+			},
+			args: args{m: Mount{
+				Source: current,
+				Dest:   "/home/ubuntu/sites/example",
+			}},
+			want: true,
+		},
+		{
+			name:   "mounts that do not exist return false",
+			fields: fields{Mounts: nil},
+			args: args{m: Mount{
+				Source: current,
+				Dest:   "/home/ubuntu/sites/example.site",
+			}},
+			want: false,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			c := &Config{
+				PHP:       tt.fields.PHP,
+				Mounts:    tt.fields.Mounts,
+				Databases: tt.fields.Databases,
+				Sites:     tt.fields.Sites,
+			}
+			if got := c.AlreadyMounted(tt.args.m); got != tt.want {
+				t.Errorf("AlreadyMounted() = \n%v, \nwant \n%v", got, tt.want)
+			}
+		})
+	}
+}