Exported all the errors so programs using this library can customize error messages.

2 files changed, 48 insertions, 5 deletions

diff --git a/errhandlers/errhandlers.go b/errhandlers/errhandlers.go
index 5f4db25..dd5f9f8 100644
--- a/errhandlers/errhandlers.go
+++ b/errhandlers/errhandlers.go
@@ -17,8 +17,6 @@
 package errhandlers
 
 import (
-  "errors"
-  "fmt"
   "github.com/MikunoNaka/MAL2Go/util"
 )
 
@@ -33,7 +31,7 @@ func FieldsErrHandler(fields []string) ([]string, error) {
   // checks if each given field is valid
   for _, j := range(fields) {
     if !IsValidField(j) {
-      return []string{}, errors.New(fmt.Sprintf("InvalidFieldError: Invalid field specified: \"%s\"", j))
+      return []string{}, InvalidFieldError
     }
   }
 
@@ -52,7 +50,7 @@ func MangaFieldsErrHandler(fields []string) ([]string, error) {
   // checks if each given field is valid
   for _, j := range(fields) {
     if !IsValidMangaField(j) {
-      return []string{}, errors.New(fmt.Sprintf("InvalidFieldError: Invalid field specified: \"%s\"", j))
+      return []string{}, InvalidFieldError
     }
   }
 
@@ -63,7 +61,14 @@ func MangaFieldsErrHandler(fields []string) ([]string, error) {
 // if limit or error specified are above the limit
 func LimitErrHandler(limit, maxLimit int) error {
   if limit > maxLimit {
-    return errors.New(fmt.Sprintf("InvalidLimitError: Limit specified too high (%d > %d).", limit, maxLimit))
+    switch maxLimit {
+    case 500:
+      return InvalidLimitError500
+    case 1000:
+      return InvalidLimitError500
+    default:
+      return InvalidLimitError
+    }
   } 
   // return nil if no error
   return nil
diff --git a/errhandlers/errors.go b/errhandlers/errors.go
new file mode 100644
index 0000000..4ea4311
--- /dev/null
+++ b/errhandlers/errors.go
@@ -0,0 +1,38 @@
+/* MAL2Go - MyAnimeList V2 API wrapper for Go
+ * Copyright (C) 2022  Vidhu Kant Sharma <vidhukant@protonmail.ch>
+
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>. */
+
+package errhandlers
+
+import (
+  "errors"
+)
+
+var InvalidFieldError        error = errors.New("InvalidFieldError: Invalid field specified.")
+var InvalidLimitError        error = errors.New("InvalidLimitError: Limit specified too high.")
+var InvalidLimitError500     error = errors.New("InvalidLimitError: Limit specified too high. (max is 500)")
+var InvalidLimitError1000    error = errors.New("InvalidLimitError: Limit specified too high. (max is 1000)")
+
+var InvalidRankingError      error = errors.New("InvalidRankingError: Invalid ranking type specified.")
+var InvalidSeasonError       error = errors.New("InvalidSeasonError: Invalid season specifield.")
+var InvalidSortError         error = errors.New("InvalidSortError: Invalid sort type specifield.")
+var InvalidStatusError       error = errors.New("InvalidStatusError: Invalid status specified.")
+
+var URLNameValueError        error = errors.New("URLNameValueError: Number of names and values passed to URLGenerator don't match.")
+
+var InvalidScoreError        error = errors.New("InvalidScoreError: Score should lie between 0-10.")
+var InvalidPriorityError     error = errors.New("InvalidPriorityError: Priority should lie between 0-2.")
+var InvalidRewatchValueError error = errors.New("InvalidRewatchValueError: Rewatch value should lie between 0-5.")
+var InvalidRereadValueError  error = errors.New("InvalidRereadValueError: Reread value should lie between 0-5.")