add: relay api endpoints

models/device_dbo.cc

@@ -32,7 +32,7 @@ static bool device_db_update_insert(device_dbo *device, sqlite3_stmt *stmt)
 static device_dbo*
 device_db_select_mapper(sqlite3_stmt *stmt)
 {
-    auto *new_device = (device_dbo*)malloc(sizeof(device_dbo));
+    auto *new_device = new device_dbo();
     for(int i = 0; i < sqlite3_column_count(stmt); i++)
     {
         const char *name = sqlite3_column_name(stmt, i);

models/relay_dbo.cc

@@ -5,6 +5,7 @@
 #include <helpers.h>
 #include "relay_dbo.h"
 #include "globals.h"
+#include "device_dbo.h"
 
 static bool relay_db_update_insert(relay_dbo *relay, sqlite3_stmt *stmt)
 {
@@ -31,7 +32,7 @@ static bool relay_db_update_insert(relay_dbo *relay, sqlite3_stmt *stmt)
 static relay_dbo*
 relay_db_select_mapper(sqlite3_stmt *stmt)
 {
-    auto *new_relay = (relay_dbo*)malloc(sizeof(relay_dbo));
+    auto *new_relay = new relay_dbo();
     for(int i = 0; i < sqlite3_column_count(stmt); i++)
     {
         const char *name = sqlite3_column_name(stmt, i);
@@ -120,7 +121,7 @@ relay_dbo::insert()
 {
     sqlite3_stmt *stmt;
 
-    sqlite3_prepare_v2(globals::db, "INSERT INTO relays(id, number, name, active_schedule_id, device_id) values (?1, ?2, ?3, ?4, ?5);", -1, &stmt, nullptr);
+    sqlite3_prepare_v2(globals::db, "INSERT INTO relays(number, name, active_schedule_id, device_id) values (?2, ?3, ?4, ?5);", -1, &stmt, nullptr);
 
     return relay_db_update_insert(this, stmt);
 }
@@ -187,6 +188,43 @@ relay_dbo::get_by(helpers::sql_filter_builder **filters)
     return relay_db_select(stmt);
 }
 
+relay_dbo*
+relay_dbo::get_relay_for_device(const char *device_id, int relay_num)
+{
+    helpers::sql_filter_builder *filters[2];
+    helpers::sql_filter_builder filter(
+            "number",
+            (void*)(intptr_t)relay_num,
+            (intptr_t)&sqlite3_bind_int,
+            "AND"
+    );
+    helpers::sql_filter_builder filter2(
+            "device_id",
+            (void*)device_id,
+            (intptr_t)sqlite3_bind_text,
+            ";"
+    );
+    filters[0] = &filter;
+    filters[1] = &filter2;
+
+    auto relays = relay_dbo::get_by(filters);
+
+    relay_dbo *relay = relays[0];
+    free(relays);
+    return relay;
+}
+
+bool
+relay_dbo::valid_num_for_device(const char *search_device_id, int relay_num)
+{
+    device_dbo **devices = device_dbo::get_by_simple("id", search_device_id, (intptr_t)&sqlite3_bind_text);
+
+    bool valid_id_and_num = devices[0] && devices[0]->relay_count > relay_num;
+    device_dbo::free_list(devices);
+
+    return valid_id_and_num;
+}
+
 void
 relay_dbo::free_list(relay_dbo **relays_list)
 {
@@ -195,4 +233,4 @@ relay_dbo::free_list(relay_dbo **relays_list)
         free(relays_list[i]);
     }
     free(relays_list);
-}
+}

models/relay_dbo.h

@@ -37,6 +37,12 @@ public:
     static relay_dbo**
     get_by(helpers::sql_filter_builder **filters);
 
+    static relay_dbo*
+    get_relay_for_device(const char *device_id, int relay_num);
+
+    static bool
+    valid_num_for_device(const char *search_device_id, int relay_num);
+
     static relay_dbo**
     get_all();
 };