fix: pagination queries

- refactor keyset pagination query to correctly fecth previous page
- remove pagination from token list
- add fetch latest transactions by token

pkg/pagination/pagination.go

@@ -6,29 +6,32 @@ import (
 )
 
 type Pagination struct {
-	PerPage int
-	Cursor  int
-	Forward bool
+	PerPage   int
+	Cursor    int
+	Next      bool
+	FirstPage bool
 }
 
 func GetPagination(q url.Values) Pagination {
 	var (
-		pp, _      = strconv.Atoi(q.Get("per_page"))
-		cursor, _  = strconv.Atoi(q.Get("cursor"))
-		forward, _ = strconv.ParseBool(q.Get("forward"))
+		pp, _     = strconv.Atoi(q.Get("per_page"))
+		cursor, _ = strconv.Atoi(q.Get("cursor"))
+		next, _   = strconv.ParseBool(q.Get("next"))
+		firstPage = false
 	)
 
 	if pp > 100 {
 		pp = 100
 	}
 
-	if !forward && cursor < 1 {
-		cursor = 1
+	if !next && cursor < 1 {
+		firstPage = true
 	}
 
 	return Pagination{
-		PerPage: pp,
-		Cursor:  cursor,
-		Forward: forward,
+		PerPage:   pp,
+		Cursor:    cursor,
+		Next:      next,
+		FirstPage: firstPage,
 	}
 }