#!/usr/bin/env bash

# Check Documented LINK Token Deployment
# Verifies the documented successful deployment at 0xb7721dD53A8c629d9f1Ba31a5819AFe250002b03

set -e

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"

# Colors
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
CYAN='\033[0;36m'
NC='\033[0m'

log_info() { echo -e "${BLUE}[INFO]${NC} $1"; }
log_success() { echo -e "${GREEN}[✓]${NC} $1"; }
log_warn() { echo -e "${YELLOW}[WARN]${NC} $1"; }
log_error() { echo -e "${RED}[ERROR]${NC} $1"; }

# Load environment
if [ -f "$PROJECT_ROOT/.env" ]; then
    source "$PROJECT_ROOT/.env" 2>/dev/null || true
fi

if [ -z "$PRIVATE_KEY" ]; then
    log_error "PRIVATE_KEY not set in .env"
    exit 1
fi

CHAIN138_RPC="${RPC_URL_138:-http://192.168.11.211:8545}"
LINK_DEPLOYED="0xb7721dD53A8c629d9f1Ba31a5819AFe250002b03"
WALLET=$(cast wallet address --private-key "$PRIVATE_KEY")

log_info "=== Documented LINK Token Deployment Check ==="
log_info "Documented Address: $LINK_DEPLOYED"
log_info "Wallet: $WALLET"
log_info "RPC: $CHAIN138_RPC"
log_info ""

# Check 1: Contract Existence
log_info "1. Checking if contract exists..."
LINK_CODE=$(cast code "$LINK_DEPLOYED" --rpc-url "$CHAIN138_RPC" 2>/dev/null || echo "")
if [ -z "$LINK_CODE" ] || [ "${#LINK_CODE}" -lt 10 ]; then
    log_error "   ❌ Contract not found at $LINK_DEPLOYED"
    log_info ""
    log_info "The documented deployment may not be on the current RPC endpoint."
    log_info "Expected RPC was: http://192.168.11.250:8545"
    log_info "Current RPC is: $CHAIN138_RPC"
    exit 1
else
    CODE_SIZE=$(( ${#LINK_CODE} / 2 ))
    log_success "   ✓ Contract exists (code size: $CODE_SIZE bytes)"
fi

# Check 2: Token Info
log_info ""
log_info "2. Checking token information..."
NAME=$(cast call "$LINK_DEPLOYED" "name()(string)" --rpc-url "$CHAIN138_RPC" 2>/dev/null || echo "")
SYMBOL=$(cast call "$LINK_DEPLOYED" "symbol()(string)" --rpc-url "$CHAIN138_RPC" 2>/dev/null || echo "")
DECIMALS=$(cast call "$LINK_DEPLOYED" "decimals()(uint8)" --rpc-url "$CHAIN138_RPC" 2>/dev/null || echo "")

if [ -n "$NAME" ] && [ -n "$SYMBOL" ]; then
    log_success "   Name: $NAME"
    log_success "   Symbol: $SYMBOL"
    log_info "   Decimals: $DECIMALS"
else
    log_warn "   ⚠ Could not retrieve token info"
fi

# Check 3: Wallet Balance
log_info ""
log_info "3. Checking wallet LINK balance..."
BALANCE=$(cast call "$LINK_DEPLOYED" "balanceOf(address)(uint256)" "$WALLET" --rpc-url "$CHAIN138_RPC" 2>&1 || echo "ERROR")

if [[ "$BALANCE" == *"ERROR"* ]]; then
    log_error "   ❌ Could not check balance: $BALANCE"
else
    BALANCE_LINK=$(echo "$BALANCE" | cast --to-unit wei ether 2>/dev/null || echo "0")
    log_info "   Balance: $BALANCE_LINK LINK"
    
    MIN_LINK="1.0"
    if (( $(echo "$BALANCE_LINK >= $MIN_LINK" | bc -l 2>/dev/null || echo "0") )); then
        log_success "   ✓ Sufficient balance (>= $MIN_LINK LINK)"
    else
        log_warn "   ⚠ Low balance: $BALANCE_LINK LINK (recommended: >= $MIN_LINK LINK)"
    fi
fi

# Summary
log_info ""
log_info "=== Summary ==="
log_success "✓ LINK token contract found at: $LINK_DEPLOYED"
log_info "  This matches documented successful deployment"
log_info ""
log_info "To use this LINK token:"
log_info "1. Update .env: LINK_TOKEN=$LINK_DEPLOYED"
log_info "2. Update CCIP Router fee token if needed"
log_info "3. Verify wallet has sufficient LINK for fees"