#!/bin/bash

# Fetch recent swaps from Arbitrum and save them for testing

set -e

CAST="/home/administrator/.foundry/bin/cast"
ARBITRUM_RPC="https://arb1.arbitrum.io/rpc"
OUTPUT_FILE="test_swaps.json"
SWAP_COUNT=10

echo "Fetching recent swaps from Arbitrum..."

# Get latest block number
LATEST_BLOCK=$($CAST block-number --rpc-url "$ARBITRUM_RPC")
echo "Latest block: $LATEST_BLOCK"

# Start from 100 blocks ago
START_BLOCK=$((LATEST_BLOCK - 100))

echo "Scanning blocks $START_BLOCK to $LATEST_BLOCK for swap transactions..."
echo "["  > "$OUTPUT_FILE"

SWAPS_FOUND=0

# Known swap event signatures
UNISWAP_V2_SWAP="0xd78ad95fa46c994b6551d0da85fc275fe613ce37657fb8d5e3d130840159d822" # Swap(address,uint256,uint256,uint256,uint256,address)
UNISWAP_V3_SWAP="0xc42079f94a6350d7e6235f29174924f928cc2ac818eb64fed8004e115fbcca67" # Swap(address,address,int256,int256,uint160,uint128,int24)

for ((BLOCK=START_BLOCK; BLOCK<=LATEST_BLOCK && SWAPS_FOUND<SWAP_COUNT; BLOCK++)); do
    echo "Scanning block $BLOCK..." >&2

    # Get block with transactions
    BLOCK_DATA=$($CAST block $BLOCK --json --rpc-url "$ARBITRUM_RPC" 2>/dev/null || echo "{}")

    # Extract transaction hashes
    TX_HASHES=$(echo "$BLOCK_DATA" | jq -r '.transactions[]?' 2>/dev/null || echo "")

    for TX_HASH in $TX_HASHES; do
        if [ -z "$TX_HASH" ]; then
            continue
        fi

        # Get transaction receipt
        RECEIPT=$($CAST receipt "$TX_HASH" --json --rpc-url "$ARBITRUM_RPC" 2>/dev/null || echo "{}")

        # Check if this transaction has swap events
        HAS_SWAP=$(echo "$RECEIPT" | jq -r ".logs[]? | select(.topics[0]? == \"$UNISWAP_V2_SWAP\" or .topics[0]? == \"$UNISWAP_V3_SWAP\") | .address" | head -1)

        if [ ! -z "$HAS_SWAP" ]; then
            echo "Found swap in tx $TX_HASH" >&2

            # Get full transaction
            TX_DATA=$($CAST tx "$TX_HASH" --json --rpc-url "$ARBITRUM_RPC" 2>/dev/null || echo "{}")

            # Extract relevant fields
            TO=$(echo "$TX_DATA" | jq -r '.to')
            FROM=$(echo "$TX_DATA" | jq -r '.from')
            VALUE=$(echo "$TX_DATA" | jq -r '.value')
            INPUT=$(echo "$TX_DATA" | jq -r '.input')
            GAS=$(echo "$TX_DATA" | jq -r '.gas')

            # Add swap to output
            if [ $SWAPS_FOUND -gt 0 ]; then
                echo "," >> "$OUTPUT_FILE"
            fi

            cat >> "$OUTPUT_FILE" <<EOF
  {
    "txHash": "$TX_HASH",
    "block": $BLOCK,
    "from": "$FROM",
    "to": "$TO",
    "value": "$VALUE",
    "input": "$INPUT",
    "gas": "$GAS",
    "poolAddress": "$HAS_SWAP"
  }
EOF

            SWAPS_FOUND=$((SWAPS_FOUND + 1))

            if [ $SWAPS_FOUND -ge $SWAP_COUNT ]; then
                break 2
            fi
        fi
    done
done

echo "" >> "$OUTPUT_FILE"
echo "]" >> "$OUTPUT_FILE"

echo "Found $SWAPS_FOUND swaps and saved to $OUTPUT_FILE"
cat "$OUTPUT_FILE"