PriceSVG

On-chain price board that stores token prices and renders a small SVG dashboard. Built with Foundry for quick local iteration and testing.

What it does

• Owner-managed price registry; symbols are case-sensitive and reverts on empty input.
• Emits PriceUpdated for every write; keeps an ordered list of symbols for deterministic SVG rows.
• Renders a dark, monospace SVG card showing every tracked symbol/value pair and reverts if no prices exist.

Quick start

1. Install Foundry (forge, cast): curl -L https://foundry.paradigm.xyz | bash then foundryup.
2. Install deps (includes forge-std): forge install.
3. Run tests: forge test.
4. Format (if you touch Solidity): forge fmt.

Usage examples

• Deploy: forge create src/PriceSVG.sol:PriceSVG --rpc-url $RPC_URL --private-key $PK.
• Update a price (owner only): cast send $ADDRESS "setPrice(string,int256)" "ETH" 1800 --rpc-url $RPC_URL --private-key $PK.
• Read a price: cast call $ADDRESS "priceOf(string)(int256,bool)" "ETH" --rpc-url $RPC_URL.
• Render SVG: cast call $ADDRESS "svg()(string)" --rpc-url $RPC_URL.

Repository layout

• src/PriceSVG.sol: Contract logic for storing prices and composing the SVG output.
• test/PriceSVG.t.sol: Coverage for owner writes, empty symbols, missing prices, and SVG content.
• foundry.toml: Build/profile config (Solidity 0.8.23, optimizer enabled).
• remappings.txt, lib/: Dependency wiring for forge-std.
• scripts/: Reserved for future deployment/interaction scripts.