trial

.gitignore

@@ -1 +1,3 @@
-node_modules
+node_modules
+cache
+.vscode

contracts/document.sol

@@ -4,14 +4,99 @@ pragma solidity ^0.8.4;
 import "hardhat/console.sol";
 
 contract document{
-    struct doc_detail{
-        string type_name;
-        string hash_data;
-        string file_password;
+
+    uint totalDocs = 0;
+
+
+    struct doc{
+        string type_name; // eg. aadhaar card, pan card, etc.
+        string hash_data; // ipvf hash
+
+
+    }
+
+    struct user{
+        // doc[] docs; // Mapping of uploaded Documents
+        mapping(string => string) docs; // type -> hash
+        uint nDocs; // number of uploaded Documents
+
+    }
+
+    mapping(address => user) users;
+
+    constructor(){
+        console.log("totalDocs is " , totalDocs);
     }
 
-    mapping(address => doc_detail) particular_docs;
+
+
+
+
+    // mapping(address => doc_detail) particular_docs;
+
+
+
+
+
+
+    // Upload(docum) : particular_docs[(this.address)] -> docum
+    function upload(string memory docum , string memory docType) external { // vm error : revert ..... why ? no but why?.....i need help
+
+
+        // user memory sender = users[msg.sender];
+        // bool flagExists = false;
+
+
+        // sender.docs[sender.nDocs].type_name = docType;
+        // sender.docs[sender.nDocs++].hash_data = docum;
+
+        // for (uint i = 0; i < users[msg.sender].nDocs; i++){
+        //     // if (sender.docs[i].type_name == docType){
+
+        //     // }
+        //     if (keccak256(bytes(users[msg.sender].docs[i].type_name)) == keccak256(bytes(docType))){
+        //         flagExists = true;
+        //     }
+        // }
+
+        // require(!flagExists, 'Document Already Exists');
+
+        // users[msg.sender].docs[users[msg.sender].nDocs].type_name = docType;
+        // users[msg.sender].docs[users[msg.sender].nDocs++].hash_data = docum;
+        users[msg.sender].docs[docType] = docum;
+        totalDocs++;
+
+        // For now if same type entered, it replaces old doc corresponding to the type
+
+
+    }   
 
 
+
+    // Download(docum)
+
+    function download(string memory docType) external view returns(string memory) {
+        // user memory sender = users[msg.sender];
+        // bool flagExists = false;
+        // uint docLocation;
+
+        // for (uint i = 0; i < users[msg.sender].nDocs; i++){
+        //     if (keccak256(bytes(sender.docs[i].type_name)) == keccak256(bytes(docType))){
+        //         flagExists = true;
+        //         docLocation = i;
+        //     }
+        // }
+
+        // require(flagExists, 'No such Document exists');
+        // return sender.docs[docLocation].hash_data;
+        // string memory s = users[msg.sender].docs[docType];
+        // if (s)
+        if (keccak256(bytes(users[msg.sender].docs[docType])) == keccak256(bytes(''))){return '-1';}
+
+        return users[msg.sender].docs[docType];
+
+    }
+
+
 
 }

hardhat.config.js

@@ -1,7 +1,6 @@
 require("@nomiclabs/hardhat-waffle");
 
-// This is a sample Hardhat task. To learn how to create your own go to
-// https://hardhat.org/guides/create-task.html
+
 task("accounts", "Prints the list of accounts", async (taskArgs, hre) => {
     const accounts = await hre.ethers.getSigners();
 
@@ -10,8 +9,6 @@ task("accounts", "Prints the list of accounts", async (taskArgs, hre) => {
     }
 });
 
-// You need to export an object to set up your config
-// Go to https://hardhat.org/config/ to learn more
 
 /**
  * @type import('hardhat/config').HardhatUserConfig