From fd8efa0b2af8ece0d4ba50c25505ea4f66a09d9a Mon Sep 17 00:00:00 2001
From: Denis Arh <denis.arh@kendu.si>
Date: Thu, 12 Jul 2018 19:33:24 +0200
Subject: [PATCH] Always generate db tag (either from dbname or name)

---
 sam/_gen.php                   | 10 ++++++++++
 sam/templates/http_structs.tpl |  2 +-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/sam/_gen.php b/sam/_gen.php
index e62ae38e1..f62a58b4b 100644
--- a/sam/_gen.php
+++ b/sam/_gen.php
@@ -81,3 +81,13 @@ foreach (array("routes") as $type) {
 
 	file_put_contents($filename, $contents);
 }
+
+// camel case to snake case
+function decamel($input) {
+  preg_match_all('!([A-Z][A-Z0-9]*(?=$|[A-Z][a-z0-9])|[A-Za-z][a-z0-9]+)!', $input, $matches);
+  $ret = $matches[0];
+  foreach ($ret as &$match) {
+    $match = $match == strtoupper($match) ? strtolower($match) : lcfirst($match);
+  }
+  return implode('_', $ret);
+}
diff --git a/sam/templates/http_structs.tpl b/sam/templates/http_structs.tpl
index 934551e00..8b4fd7f9a 100644
--- a/sam/templates/http_structs.tpl
+++ b/sam/templates/http_structs.tpl
@@ -20,7 +20,7 @@ type ({foreach $structs as $struct}
 	// {api.title}
 	{struct.name} struct {
 {foreach $struct.fields as $field}
-		{field.name} {field.type}{if $field.tag || $field.dbname} `{$field.tag}{if $field.dbname} db:"{$field.dbname}"{/if}`{/if}{newline}
+		{field.name} {field.type} `{if $field.tag}{$field.tag} {/if}db:"{if $field.dbname}{$field.dbname}{else}{$field.name|decamel}{/if}"`{newline}
 {/foreach}
 
 		changed []string