// Package web3 wraps chain configuration + multi-chain RPC plumbing.
//
// The HTTP layer asks this package for canonical chain data; the RPC
// proxy fans out through a pool defined in client.go. luxfi/* packages
// are preferred for any chain library imports (see ~/.claude/CLAUDE.md).
package web3

// ChainInfo is the canonical per-chain record exposed at /v1/chains.
// Mirrors bootnode/core/chains/registry.py.
type ChainInfo struct {
	ID       string `json:"id"`
	Name     string `json:"name"`
	ChainID  int64  `json:"chainId"`
	IsEVM    bool   `json:"isEvm"`
	Currency string `json:"currency"`
	Explorer string `json:"explorer"`
}

// allChains is the initial static set; production reads from
// deps.Base ("registry" table) so customers can add custom chains.
//
// TODO(bootnode-port): hydrate from bootnode/core/chains/registry.py
// (CHAIN_REGISTRY) at startup; allow per-org overrides.
var allChains = []ChainInfo{
	{ID: "ethereum", Name: "Ethereum", ChainID: 1, IsEVM: true, Currency: "ETH", Explorer: "https://etherscan.io"},
	{ID: "polygon", Name: "Polygon", ChainID: 137, IsEVM: true, Currency: "MATIC", Explorer: "https://polygonscan.com"},
	{ID: "arbitrum", Name: "Arbitrum One", ChainID: 42161, IsEVM: true, Currency: "ETH", Explorer: "https://arbiscan.io"},
	{ID: "optimism", Name: "Optimism", ChainID: 10, IsEVM: true, Currency: "ETH", Explorer: "https://optimistic.etherscan.io"},
	{ID: "base", Name: "Base", ChainID: 8453, IsEVM: true, Currency: "ETH", Explorer: "https://basescan.org"},
	{ID: "bsc", Name: "BNB Chain", ChainID: 56, IsEVM: true, Currency: "BNB", Explorer: "https://bscscan.com"},
	{ID: "avalanche", Name: "Avalanche C-Chain", ChainID: 43114, IsEVM: true, Currency: "AVAX", Explorer: "https://snowtrace.io"},
	{ID: "lux", Name: "Lux Network", ChainID: 96369, IsEVM: true, Currency: "LUX", Explorer: "https://explore.lux.network"},
}

// AllChains returns every chain Bootnode currently knows about.
func AllChains() []ChainInfo { return append([]ChainInfo(nil), allChains...) }

// ChainByName looks up one chain by its kebab-cased ID.
func ChainByName(id string) (ChainInfo, bool) {
	for _, c := range allChains {
		if c.ID == id {
			return c, true
		}
	}
	return ChainInfo{}, false
}