gurbanigulati17/OracleFacing-SmartContract-Backend

This project demonstrates a basic Hardhat setup for interaction with the Shamba Geospatial Oracle using the Oracle Facing Smart Contracts inheriting the Shamba Smart-Contract-Kit. # Hardhat Setup for interacting with Oracle Facing Smart Contracts ### The github repository followed: github.com This project demonstrates a basic Hardhat setup for interaction with the Shamba Geospatial Oracle using the Oracle Facing Smart Contracts inheriting the Shamba Smart-Contract-Kit. ### First install the required dependencies mentioned in package.json: ``` npm install ``` ### Configure the environment variables including ALCHEMY_POLYGON_URL, ACCOUNT_PRIVATE_KEY and POLYGONSCAN_API_KEY by creating a .env file: > ALCHEMY_POLYGON_URL="Login into Alchemy and create an app using dashboard.alchemyapi.io and copy the HTTPS url from the 'View Key' option" > ACCOUNT_PRIVATE_KEY="Export your Metamask Wallet private key" > POLYGONSCAN_API_KEY="Login into polygonscan.com and generate API key" ### Deploy the contract by running the deploy.js script: ``` npx hardhat run scripts/deploy.js ``` ### Verify and publish the contract on mumbai.polygonscan.com: ``` npx hardhat verify DEPLOYED_CONTRACT_ADDRESS --contract contracts/OracleFacingGeoConsumer.sol:OracleFacingGeoConsumer ``` ### Interact with the contract using the tasks defined in the tasks folder #### Fund the deployed contract with 1 LINK per Oracle request: ``` npx hardhat fund --contract DEPLOYED_CONTRACT_ADDRESS --links 1 ``` #### Send the request to the Shamba Geospatial Oracle by passing the required 7 parameters: > **NOTE**: To learn about the parameters, you can check the Shamba Docs (docs.shamba.app) and also interact with the Shamba Contracts Tool (contracts.shamba.app). ``` npx hardhat sendRequest --contract DEPLOYED_CONTRACT_ADDRESS agg_mean COPERNICUS/S2_SR NDVI 250 2021-09-01 2021-09-10 "[[1,"[[[19.51171875,4.214943141390651],[18.28125,-4.740675384778361],[26.894531249999996,-4.565473550710278],[27.24609375,1.2303741774326145],[19.51171875,4.214943141390651]]]"]]" `` …