init

todofeed/backend-todofeed/contracts/TodoFeed.sol

@@ -0,0 +1,64 @@
+pragma solidity 0.4.25;
+contract TodoFeed {
+  
+  event TodoCompleted (uint256 indexed todoId, address owner, string title, bytes photo, uint256 timestamp);
+  event TodoVerified (uint256 indexed todoId, address verifier);
+
+  TodoData[] public todoList;
+  mapping(uint256 => TodoData) public todoMap;
+
+  struct TodoData {
+    uint256 todoId;                       // Unique token id
+    address owner;
+    string title;
+    bytes photo;                           // Image source encoded in uint 8 array format    
+    uint256 timestamp;                     // Uploaded time
+    bool isVerified;                       // check if is verified, default false.
+    address verifier;                      // verifier address
+  }
+
+  function writeTodo(string title, bytes photo) public {
+    uint256 todoId = todoList.length + 1;
+
+    TodoData memory newData = TodoData({
+      todoId : todoId,
+      owner : msg.sender,
+      title : title,
+      photo : photo,
+      timestamp : now,
+      isVerified: false,
+      verifier: address(0)
+    });
+
+    todoList.push(newData);
+    todoMap[todoId] = newData;
+
+    emit TodoCompleted(todoId, msg.sender, title, photo, now);
+  }
+
+  function verifyTodo(uint256 todoId) {
+    todoMap[todoId].isVerified = true;
+    todoMap[todoId].verifier = msg.sender;
+
+    emit TodoVerified(todoId, msg.sender);
+  }
+
+  function getTotalTodoCount () public view returns (uint) {
+    return todoList.length;
+  }
+
+  function getTodo (uint todoId) public view 
+    returns(uint256, address, string, bytes, uint256, bool, address) {
+      require(todoMap[todoId].todoId != 0, "Todo does not exist");
+      return (
+        todoMap[todoId].todoId,
+        todoMap[todoId].owner,
+        todoMap[todoId].title,
+        todoMap[todoId].photo,        
+        todoMap[todoId].timestamp,
+        todoMap[todoId].isVerified,
+        todoMap[todoId].verifier);
+  }
+
+
+}