#!/bin/bash

VERSION="2025.05"
HOST="https://your-api-host.com"
ENDPOINT="/api/subscriptions/get_subscriptions.php"
API_KEY="${API_KEY:-$WALLOS_API_KEY}"

MODE="md"
FULL=false
OUTPUT=""
TMP_FILE=$(mktemp)

# 🚨 Dependencies check
for dep in curl jq; do
  command -v "$dep" >/dev/null 2>&1 || {
    echo "❌ Missing required dependency: $dep"
    exit 1
  }
done

show_help() {
  cat << EOF
ℹ️ Wallos Fetcher Script - v$VERSION

Usage: ./wallos-fetch.sh [OPTIONS]

Options:
  --json             Output raw JSON
  --md               Output Markdown table
  --csv              Output CSV table
  --full             Include more fields
  --output <file>    Custom output filename
  --help             Show this help message
  --version          Show version
EOF
}

parse_args() {
  while [[ "$#" -gt 0 ]]; do
    case "$1" in
      --json) MODE="json" ;;
      --md) MODE="md" ;;
      --csv) MODE="csv" ;;
      --full) FULL=true ;;
      --output) shift; OUTPUT="$1" ;;
      --help) show_help; exit 0 ;;
      --version) echo "🧾 wallos-fetch v$VERSION"; exit 0 ;;
      *) echo "Unknown option: $1"; show_help; exit 1 ;;
    esac
    shift
  done

  # Set default output filename
  [[ -z "$OUTPUT" ]] && OUTPUT="subscriptions.${MODE}"
}

fetch_data() {
  URL="${HOST}${ENDPOINT}?api_key=${API_KEY}"
  RESPONSE=$(curl -s -w "\nHTTP_STATUS:%{http_code}" "$URL")
  STATUS=$(echo "$RESPONSE" | sed -n 's/^HTTP_STATUS://p')
  BODY=$(echo "$RESPONSE" | sed '/^HTTP_STATUS:/d')

  echo "$BODY" > "$TMP_FILE"

  if [[ "$STATUS" != "200" ]]; then
    echo "❌ API request failed with status: $STATUS"
    rm -f "$TMP_FILE"
    exit 1
  fi
}

output_json() {
  mv "$TMP_FILE" "$OUTPUT"
  echo "💾 Saved JSON to $OUTPUT"
}

output_markdown() {
  {
    echo "# 🧾 Active Subscriptions Overview"
    echo "_Last updated: $(date +'%Y-%m-%d')_"
    echo ""
  } > "$OUTPUT"

  if $FULL; then
    echo "| ID | Name | Price | Currency | Next Payment | Cycle | Auto Renew | Category | Payment Method |" >> "$OUTPUT"
    echo "|----|------|-------|----------|---------------|-------|-------------|----------|----------------|" >> "$OUTPUT"
    jq -r '.subscriptions[] | [.id, .name, .price, .currency_id, .next_payment, .cycle, .auto_renew, .category_name, .payment_method_name] | @tsv' "$TMP_FILE" |
    while IFS=$'\t' read -r id name price curr next cycle renew cat pay; do
      echo "| $id | $name | $price | $curr | $next | $cycle | $renew | $cat | $pay |" >> "$OUTPUT"
    done
  else
    echo "| ID | Name | Price | Next Payment | Category | Payment Method |" >> "$OUTPUT"
    echo "|----|------|-------|---------------|----------|----------------|" >> "$OUTPUT"
    jq -r '.subscriptions[] | [.id, .name, .price, .next_payment, .category_name, .payment_method_name] | @tsv' "$TMP_FILE" |
    while IFS=$'\t' read -r id name price next cat pay; do
      echo "| $id | $name | $price | $next | $cat | $pay |" >> "$OUTPUT"
    done
  fi
  echo "💾 Saved Markdown to $OUTPUT"
  rm -f "$TMP_FILE"
}

output_csv() {
  if $FULL; then
    echo '"id","name","price","currency_id","next_payment","cycle","auto_renew","category_name","payment_method_name"' > "$OUTPUT"
    jq -r '.subscriptions[] | [.id, .name, .price, .currency_id, .next_payment, .cycle, .auto_renew, .category_name, .payment_method_name] | @csv' "$TMP_FILE" >> "$OUTPUT"
  else
    echo '"id","name","price","next_payment","category_name","payment_method_name"' > "$OUTPUT"
    jq -r '.subscriptions[] | [.id, .name, .price, .next_payment, .category_name, .payment_method_name] | @csv' "$TMP_FILE" >> "$OUTPUT"
  fi
  echo "💾 Saved CSV to $OUTPUT"
  rm -f "$TMP_FILE"
}

# 🏁 Main
parse_args "$@"
fetch_data

case "$MODE" in
  json) output_json ;;
  md) output_markdown ;;
  csv) output_csv ;;
esac