feat: preserve key on write

README.md

@@ -133,7 +133,7 @@ will use your account's default SSM alias:
 ### Writing Secrets
 
 ```bash
-$ chamber write <service> <key> <value|->
+$ chamber write [--preserve-case] <service> <key> <value|->
 ```
 
 This operation will write a secret into the secret store. If a secret with that
@@ -142,9 +142,10 @@ key already exists, it will increment the version and store a new value.
 If `-` is provided as the value argument, the value will be read from standard
 input.
 
-Secret keys are normalized automatically. The `-` will be `_` and the letters will
-be converted to upper case (for example a secret with key `secret_key` and
-`secret-key` will become `SECRET_KEY`).
+Secret keys are normalized automatically unless `--preserve-case` is specified.
+The letters will be converted to lower case (for example a secret with key
+`SECRET_KEY` will become `secret_key`, and `Secret-Key` will become
+`secret-key`).
 
 #### Reserved Service Names
 

cmd/write.go

@@ -14,9 +14,10 @@ import (
 )
 
 var (
-	singleline    bool
-	skipUnchanged bool
-	tags          map[string]string
+	singleline        bool
+	skipUnchanged     bool
+	tags              map[string]string
+	preserveWriteCase bool
 
 	// writeCmd represents the write command
 	writeCmd = &cobra.Command{
@@ -31,6 +32,7 @@ func init() {
 	writeCmd.Flags().BoolVarP(&singleline, "singleline", "s", false, "Insert single line parameter (end with \\n)")
 	writeCmd.Flags().BoolVarP(&skipUnchanged, "skip-unchanged", "", false, "Skip writing secret if value is unchanged")
 	writeCmd.Flags().StringToStringVarP(&tags, "tags", "t", map[string]string{}, "Add tags to the secret; new secrets only")
+	writeCmd.Flags().BoolVarP(&preserveWriteCase, "preserve-case", "p", false, "preserve variable name case")
 	RootCmd.AddCommand(writeCmd)
 }
 
@@ -40,7 +42,12 @@ func write(cmd *cobra.Command, args []string) error {
 		return fmt.Errorf("Failed to validate service: %w", err)
 	}
 
-	key := utils.NormalizeKey(args[1])
+	key := args[1]
+
+	if !preserveWriteCase {
+		key = utils.NormalizeKey(key)
+	}
+
 	if err := validateKey(key); err != nil {
 		return fmt.Errorf("Failed to validate key: %w", err)
 	}