Remove selector pathType const in favor of path package const (#757)

* Remove pathType const

The path package const only provides information on the category, not
the service for the path.

* Fix var name/package name clashes

src/pkg/selectors/exchange.go

@@ -4,6 +4,7 @@ import (
 	"strconv"
 
 	"github.com/alcionai/corso/src/internal/common"
+	"github.com/alcionai/corso/src/internal/path"
 	"github.com/alcionai/corso/src/pkg/backup/details"
 	"github.com/alcionai/corso/src/pkg/filters"
 )
@@ -558,27 +559,27 @@ func (ec exchangeCategory) unknownCat() categorizer {
 // Example:
 // [tenantID, userPN, "mail", mailFolder, mailID]
 // => {exchUser: userPN, exchMailFolder: mailFolder, exchMail: mailID}
-func (ec exchangeCategory) pathValues(path []string) map[categorizer]string {
+func (ec exchangeCategory) pathValues(p []string) map[categorizer]string {
 	m := map[categorizer]string{}
-	if len(path) < 5 {
+	if len(p) < 5 {
 		return m
 	}
 
 	switch ec {
 	case ExchangeContact:
-		m[ExchangeUser] = path[1]
+		m[ExchangeUser] = p[1]
-		m[ExchangeContactFolder] = path[3]
+		m[ExchangeContactFolder] = p[3]
-		m[ExchangeContact] = path[4]
+		m[ExchangeContact] = p[4]
 
 	case ExchangeEvent:
-		m[ExchangeUser] = path[1]
+		m[ExchangeUser] = p[1]
-		m[ExchangeEventCalendar] = path[3]
+		m[ExchangeEventCalendar] = p[3]
-		m[ExchangeEvent] = path[4]
+		m[ExchangeEvent] = p[4]
 
 	case ExchangeMail:
-		m[ExchangeUser] = path[2]
+		m[ExchangeUser] = p[2]
-		m[ExchangeMailFolder] = path[4]
+		m[ExchangeMailFolder] = p[4]
-		m[ExchangeMail] = path[5]
+		m[ExchangeMail] = p[5]
 	}
 
 	return m
@@ -680,10 +681,10 @@ func (s exchange) Reduce(deets *details.Details) *details.Details {
 	return reduce[ExchangeScope](
 		deets,
 		s.Selector,
-		map[pathType]exchangeCategory{
+		map[path.CategoryType]exchangeCategory{
-			exchangeContactPath: ExchangeContact,
+			path.ContactsCategory: ExchangeContact,
-			exchangeEventPath:   ExchangeEvent,
+			path.EventsCategory:   ExchangeEvent,
-			exchangeMailPath:    ExchangeMail,
+			path.EmailCategory:    ExchangeMail,
 		},
 	)
 }

src/pkg/selectors/exchange_test.go

@@ -1054,10 +1054,10 @@ func (suite *ExchangeSelectorSuite) TestScopesByCategory() {
 
 		return mss
 	}
-	cats := map[pathType]exchangeCategory{
+	cats := map[path.CategoryType]exchangeCategory{
-		exchangeContactPath: ExchangeContact,
+		path.ContactsCategory: ExchangeContact,
-		exchangeEventPath:   ExchangeEvent,
+		path.EventsCategory:   ExchangeEvent,
-		exchangeMailPath:    ExchangeMail,
+		path.EmailCategory:    ExchangeMail,
 	}
 
 	table := []struct {

src/pkg/selectors/scopes.go

@@ -209,7 +209,7 @@ func isAnyTarget[T scopeT, C categoryT](s T, cat C) bool {
 func reduce[T scopeT, C categoryT](
 	deets *details.Details,
 	s Selector,
-	dataCategories map[pathType]C,
+	dataCategories map[path.CategoryType]C,
 ) *details.Details {
 	if deets == nil {
 		return nil
@@ -251,50 +251,32 @@ func reduce[T scopeT, C categoryT](
 	return reduced
 }
 
-// TODO: this is a hack.  We don't want these values declared here- it will get
-// unwieldy to have all of them for all services.  They should be declared in
-// paths, since that's where service- and data-type-specific assertions are owned.
-type pathType int
-
-const (
-	unknownPathType pathType = iota
-	exchangeEventPath
-	exchangeContactPath
-	exchangeMailPath
-)
-
 // return the service data type of the path.
 // TODO: this is a hack.  We don't want this identification to occur in this
 // package.  It should get handled in paths, since that's where service- and
 // data-type-specific assertions are owned.
 // Ideally, we'd use something like path.DataType() instead of this func.
-func pathTypeIn(p []string) pathType {
+func pathTypeIn(p []string) path.CategoryType {
 	// not all paths will be len=3.  Most should be longer.
 	// This just protects us from panicing below.
 	if len(p) < 4 {
-		return unknownPathType
+		return path.UnknownCategory
 	}
 
-	switch p[3] {
+	if c := path.ToCategoryType(p[3]); c != path.UnknownCategory {
-	case path.EmailCategory.String():
+		return c
-		return exchangeMailPath
-	case path.ContactsCategory.String():
-		return exchangeContactPath
-	case path.EventsCategory.String():
-		return exchangeEventPath
 	}
 
-	// fallback for unmigrated events and contacts paths
 	switch p[2] {
 	case path.EmailCategory.String():
-		return exchangeMailPath
+		return path.EmailCategory
 	case path.ContactsCategory.String():
-		return exchangeContactPath
+		return path.ContactsCategory
 	case path.EventsCategory.String():
-		return exchangeEventPath
+		return path.EventsCategory
 	}
 
-	return unknownPathType
+	return path.UnknownCategory
 }
 
 // groups each scope by its category of data (specified by the service-selector).
@@ -303,7 +285,7 @@ func pathTypeIn(p []string) pathType {
 // so long as "mail" and "event" are contained in cats.
 func scopesByCategory[T scopeT, C categoryT](
 	scopes []scope,
-	cats map[pathType]C,
+	cats map[path.CategoryType]C,
 ) map[C][]T {
 	m := map[C][]T{}
 	for _, cat := range cats {

src/pkg/selectors/scopes_test.go

@@ -221,8 +221,8 @@ func (suite *SelectorScopesSuite) TestReduce() {
 			},
 		}
 	}
-	dataCats := map[pathType]mockCategorizer{
+	dataCats := map[path.CategoryType]mockCategorizer{
-		unknownPathType: rootCatStub,
+		path.UnknownCategory: rootCatStub,
 	}
 
 	for _, test := range reduceTestTable {
@@ -238,32 +238,32 @@ func (suite *SelectorScopesSuite) TestReduce() {
 func (suite *SelectorScopesSuite) TestPathTypeIn() {
 	table := []struct {
 		name     string
-		pathType pathType
+		pathType path.CategoryType
 		pth      []string
 	}{
 		{
 			name:     "empty",
-			pathType: unknownPathType,
+			pathType: path.UnknownCategory,
 			pth:      []string{},
 		},
 		{
 			name:     "email",
-			pathType: exchangeMailPath,
+			pathType: path.EmailCategory,
 			pth:      stubPath(path.ExchangeService, path.EmailCategory, "", "", ""),
 		},
 		{
 			name:     "contact",
-			pathType: exchangeContactPath,
+			pathType: path.ContactsCategory,
 			pth:      stubPath(path.ExchangeService, path.ContactsCategory, "", "", ""),
 		},
 		{
 			name:     "event",
-			pathType: exchangeEventPath,
+			pathType: path.EventsCategory,
 			pth:      stubPath(path.ExchangeService, path.EventsCategory, "", "", ""),
 		},
 		{
 			name:     "bogus",
-			pathType: unknownPathType,
+			pathType: path.UnknownCategory,
 			pth:      []string{"", "", "", "fnords", "", ""},
 		},
 	}
@@ -282,8 +282,8 @@ func (suite *SelectorScopesSuite) TestScopesByCategory() {
 	s2[scopeKeyCategory] = filterize(unknownCatStub.String())
 	result := scopesByCategory[mockScope](
 		[]scope{scope(s1), scope(s2)},
-		map[pathType]mockCategorizer{
+		map[path.CategoryType]mockCategorizer{
-			unknownPathType: rootCatStub,
+			path.UnknownCategory: rootCatStub,
 		})
 	assert.Len(t, result, 1)
 	assert.Len(t, result[rootCatStub], 1)