Built for the Dero Smart Contract build competition
Fully functional yet simple marketplace where users can buy and sell goods without the need of a centralized e-commerce platform. Made in DERO-BASIC, running on the DERO-DVM.
| ⚡ This smart contract was developed back in 2019 for the DERO Stargate RC1 testnet and will not be suitable for the latest release of the platform. A new, more advanced, up to date project to replace this SC will be developed. |
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DERO: dERoWuoU8wthSaUCRJN6HuFpfuaQKnPftTfXoBbi7CaLVTFCGdYrPN5iZTWNcqiZkbEVqaGduHt6C2CagHV2SPQd9VU1UknF1N
Refer to Schema.txt to understand the structures the marketplace is made up on.
AddProduct(name, description, price, amount) - Adds a new product to the marketplace.
RemoveProduct(product_id) - Removes a product from the marketplace.
ChangeProductAmount(product_id, new_amount) - Changes the amount of a product for sale.
FulfillOrder(order_id) - Confirms a order went through thus sending the funds to the seller.
BuyProduct(value, product_id, amount) - Buys a product. value should be equal to the product price multiplied by the amount bought. If not, unused coins will be sent back to the buyer address.
ReviewOrder(order_id, satisfied, comment) - Reviews a order. The buyer can either give a positive (satisfied = 1) or a negative (satisfied = 0) opinion. Comment is optional. By reviewing an order, its seller gets a feedback. Total feedback is equal to positive feedback minus negative feedback.
CancelOrder(order_id, reason) - Cancels a order. Can be used by either the buyer or the seller. Spent coins will be returned to the buyer. A order can not be canceled if it has already been fulfilled by the seller.
SetContactInfo(contact_info) - Sets the contact info of a user. Said contact info is needed in order for buyers and sellers to communicate shipping addresses/other info. Since data stored on the blockchain is currently public, contact_info should be something anonymous such as a ProtonMail address or a Wickr username.
I felt a frontend for this SC was needed in order to display data (products, orders and reviews) in a readable and understandable way to the human eye and to make interactions (buy/sell/etc) easier.
It's not going to be neither the best looking frontend, nor the most well coded but, since the main focus of the competition was to build a functional smart contract anyway, I decided to sacrifice beauty and fancy frameworks for semplicity and lightweighness' sake. I like React/Vue like anyone else but I felt they would've been overkill, so I went along with good ol' plain JavaScript ES8.
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Download the frontend folder from this repository.
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Make sure daemon and wallet are running and synced.
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Open your web browser with web security disabled. This is needed in order to bypass a CORS issue with the daemon's JSON RPC server (thanks to plspro for providing this quick fix). Example (Chrome on Ubuntu):
$ google-chrome --disable-web-security --user-data-dir=/path/to/data/dir -
Open index.html with your browser.
Tested on the latest version of Chrome and Firefox. If you're using a older browser and running into compatibility issues, you may need to pass the js file through BabelJS and the css file through a prefixer.
