#!/usr/bin/env bash
#
# Deploys Love on two local anvil nodes with different chain ids and checks
# that CREATE2 gives the token the same address on both. The address embeds the
# wETH address, so this only holds for chains sharing one wETH deployment —
# both nodes here are given the same WETH.
#
# Usage: ./script/multichain-check.sh
#
# Env overrides: PORT_A, PORT_B, CHAIN_ID_A, CHAIN_ID_B, SALT, WETH

set -euo pipefail

PORT_A=${PORT_A:-8545}
PORT_B=${PORT_B:-8546}
CHAIN_ID_A=${CHAIN_ID_A:-31337}
CHAIN_ID_B=${CHAIN_ID_B:-31338}

# First anvil dev account — local only, never use this key anywhere else.
ANVIL_KEY=0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80
CREATE2_FACTORY=0x4e59b44847b379578588920cA78FbF26c0B4956C

ROOT=$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)
RPC_A="http://127.0.0.1:$PORT_A"
RPC_B="http://127.0.0.1:$PORT_B"
TMP=$(mktemp -d)
PIDS=()

cleanup() {
    for pid in ${PIDS[@]+"${PIDS[@]}"}; do
        kill "$pid" 2>/dev/null || true
    done
    rm -rf "$TMP"
    rm -rf "$ROOT/broadcast/Love.s.sol/$CHAIN_ID_A" "$ROOT/broadcast/Love.s.sol/$CHAIN_ID_B"
    rmdir "$ROOT/broadcast/Love.s.sol" "$ROOT/broadcast" 2>/dev/null || true
}
trap cleanup EXIT

start_node() {
    local port=$1 chain_id=$2 rpc=$3
    anvil --port "$port" --chain-id "$chain_id" --silent >"$TMP/anvil-$port.log" 2>&1 &
    PIDS+=($!)

    for _ in $(seq 1 50); do
        if cast chain-id --rpc-url "$rpc" >/dev/null 2>&1; then
            return 0
        fi
        sleep 0.2
    done

    echo "anvil on port $port never came up:" >&2
    cat "$TMP/anvil-$port.log" >&2
    exit 1
}

deploy() {
    local rpc=$1 label=$2
    forge script script/Love.s.sol:LoveScript \
        --rpc-url "$rpc" \
        --private-key "$ANVIL_KEY" \
        --broadcast \
        --skip-simulation >"$TMP/deploy-$label.log" 2>&1 ||
        {
            echo "deploy on $label failed:" >&2
            cat "$TMP/deploy-$label.log" >&2
            exit 1
        }

    grep -oE 'predicted +0x[0-9a-fA-F]{40}' "$TMP/deploy-$label.log" | tail -1 | grep -oE '0x[0-9a-fA-F]{40}'
}

report() {
    local rpc=$1 addr=$2 label=$3
    local code
    code=$(cast code "$addr" --rpc-url "$rpc")

    if [[ ${#code} -le 2 ]]; then
        echo "$label: no code at $addr" >&2
        exit 1
    fi

    printf '%s  %s  %s bytes  %s / %s  weth %s\n' \
        "$label" "$addr" "$(((${#code} - 2) / 2))" \
        "$(cast call "$addr" 'name()(string)' --rpc-url "$rpc")" \
        "$(cast call "$addr" 'symbol()(string)' --rpc-url "$rpc")" \
        "$(cast call "$addr" 'weth()(address)' --rpc-url "$rpc")"
}

cd "$ROOT"

for cmd in anvil cast forge; do
    command -v "$cmd" >/dev/null || {
        echo "$cmd not found — install foundry" >&2
        exit 1
    }
done

start_node "$PORT_A" "$CHAIN_ID_A" "$RPC_A"
start_node "$PORT_B" "$CHAIN_ID_B" "$RPC_B"

for pair in "A|$RPC_A" "B|$RPC_B"; do
    IFS='|' read -r label rpc <<<"$pair"
    if [[ $(cast code "$CREATE2_FACTORY" --rpc-url "$rpc") == "0x" ]]; then
        echo "$label: deterministic deployer missing at $CREATE2_FACTORY" >&2
        exit 1
    fi
done

forge build >/dev/null

ADDR_A=$(deploy "$RPC_A" A)
ADDR_B=$(deploy "$RPC_B" B)

echo "chain $CHAIN_ID_A"
report "$RPC_A" "$ADDR_A" "  A"
echo "chain $CHAIN_ID_B"
report "$RPC_B" "$ADDR_B" "  B"

if [[ "$ADDR_A" != "$ADDR_B" ]]; then
    echo "FAIL: addresses differ" >&2
    exit 1
fi

echo "OK: same address on both chains"