#!/usr/bin/env bash
# SUBTC GATEWAY — Full Usage Commands v3.5
# Supported Coins: btc | ltc | doge
# Change COIN to switch currency

BASE="http://api.subtc.net"
COIN="btc"  # btc | ltc | doge

# ─────────────────────────────────────────────
# 0. Create API Key
# ─────────────────────────────────────────────
RESP=$(curl -sS -X POST "$BASE/v1/$COIN?mode=key_create" \
  -H "Content-Type: application/json")
KEY=$(echo "$RESP" | sed -n 's/.*"key":"\([^"]*\)".*/\1/p')
echo "KEY=$KEY"

# 0.1 Verify API Key
curl -sS -X POST "$BASE/v1/$COIN?mode=key_status" \
  -H "X-SUBTC-KEY: $KEY" \
  -H "Content-Type: application/json"

# ─────────────────────────────────────────────
# 1. Create Wallet
# ─────────────────────────────────────────────
RESP=$(curl -sS -X POST "$BASE/v1/$COIN?mode=wallet_create" \
  -H "X-SUBTC-KEY: $KEY" \
  -H "Content-Type: application/json" \
  -d '{"net":"main"}')
WID=$(echo "$RESP" | sed -n 's/.*"wallet_id":"\([^"]*\)".*/\1/p')
echo "WALLET_ID=$WID"

# 2. List Wallets
curl -sS -X POST "$BASE/v1/$COIN?mode=wallet_list" \
  -H "X-SUBTC-KEY: $KEY" \
  -H "Content-Type: application/json"

# 3. Generate Receive Address
RESP=$(curl -sS -X POST "$BASE/v1/$COIN?mode=wallet_receive" \
  -H "X-SUBTC-KEY: $KEY" \
  -H "Content-Type: application/json" \
  -d "{\"wallet_id\":\"$WID\"}")
ADDR=$(echo "$RESP" | sed -n 's/.*"address":"\([^"]*\)".*/\1/p')
echo "ADDRESS=$ADDR"

# 4. Check Wallet Balance
curl -sS -X POST "$BASE/v1/$COIN?mode=wallet_balance" \
  -H "X-SUBTC-KEY: $KEY" \
  -H "Content-Type: application/json" \
  -d "{\"wallet_id\":\"$WID\"}"

# 5. Send Transaction (with idempotency)
TO="bc1xxxxxxxx"
AMOUNT_SAT=10000
IDEM_ID="btc-send-001"

curl -sS -X POST "$BASE/v1/$COIN?mode=wallet_send" \
  -H "X-SUBTC-KEY: $KEY" \
  -H "X-SUBTC-IDEMPOTENCY: $IDEM_ID" \
  -H "Content-Type: application/json" \
  -d "{
        \"wallet_id\": \"$WID\",
        \"to\":        \"$TO\",
        \"amount_sat\": $AMOUNT_SAT
      }"

# 6A. Wait for Funds — Long Poll
EXPECTED_SAT=50000

RESP=$(curl -sS -X POST "$BASE/v1/$COIN?mode=wallet_wait_event" \
  -H "X-SUBTC-KEY: $KEY" \
  -H "Content-Type: application/json" \
  -d "{
        \"wallet_id\":    \"$WID\",
        \"expected_sat\": $EXPECTED_SAT,
        \"timeout_sec\":  300
      }")
echo "WAIT_RESPONSE=$RESP"

# 6B. Wait for Funds — Callback (Webhook)
CALLBACK_URL="https://yourserver.com/webhook/payment"

curl -sS -X POST "$BASE/v1/$COIN?mode=wallet_wait_event" \
  -H "X-SUBTC-KEY: $KEY" \
  -H "Content-Type: application/json" \
  -d "{
        \"wallet_id\":    \"$WID\",
        \"expected_sat\": $EXPECTED_SAT,
        \"timeout_sec\":  600,
        \"callback_url\": \"$CALLBACK_URL\"
      }"

# 6C. Manual Polling — wallet_poll
curl -sS -X POST "$BASE/v1/$COIN?mode=wallet_poll" \
  -H "X-SUBTC-KEY: $KEY" \
  -H "Content-Type: application/json" \
  -d "{
        \"wallet_id\":    \"$WID\",
        \"expected_sat\": $EXPECTED_SAT
      }"

# Poll loop example
while true; do
  RESP=$(curl -sS -X POST "$BASE/v1/$COIN?mode=wallet_poll" \
    -H "X-SUBTC-KEY: $KEY" \
    -H "Content-Type: application/json" \
    -d "{\"wallet_id\":\"$WID\",\"expected_sat\":$EXPECTED_SAT}")

  REACHED=$(echo "$RESP" | sed -n 's/.*"reached":\([a-z]*\).*/\1/p')
  BAL=$(echo "$RESP" | sed -n 's/.*"balance_sat":\([0-9]*\).*/\1/p')

  echo "balance=$BAL reached=$REACHED"

  if [ "$REACHED" = "true" ]; then
    echo "✅ Funds Arrived"
    break
  fi
  sleep 3
done

# 7. Inbox Create — Generate Ready Receive Address
curl -sS -X POST "$BASE/v1/$COIN?mode=inbox_create" \
  -H "X-SUBTC-KEY: $KEY" \
  -H "Content-Type: application/json" \
  -d "{
        \"wallet_id\":    \"$WID\",
        \"expected_sat\": $EXPECTED_SAT
      }"

# 8. Health Check
curl -sS "$BASE/health"

# Atomic Units & Fee Philosophy
# 1 BTC = 100,000,000 sat
# SUBTC uses integer atomic units for BTC, LTC, DOGE
# Min send amounts:
# BTC: 50,000 SAT | LTC: 200,000 SAT | DOGE: 200,000,000 SAT
# Service + network fee: 3%
# Deterministic rounding, idempotency, simplified auditing