fanbox api: item deserailze more data

src/parser/json.rs

@@ -0,0 +1,14 @@
+use json::JsonValue;
+
+pub fn parse_u64(data: &JsonValue) -> Option<u64> {
+    match data.as_u64() {
+        Some(num) => Some(num),
+        None => match data.as_str() {
+            Some(num) => match num.trim().parse::<u64>() {
+                Ok(num) => Some(num),
+                Err(_) => None,
+            },
+            None => None,
+        },
+    }
+}

src/parser/mod.rs

@@ -1,2 +1,3 @@
 pub mod description;
+pub mod json;
 pub mod metadata;