#!/usr/bin/env bash
# End-to-end curl cookbook — SPEC appendix A.
# Usage:
#   export BASE=https://s.f0xx.org
#   export BEARER=your-trusted-token
#   export SIGNER=optional-for-ttl0
#   ./scripts/demo_curl.sh
set -euo pipefail

BASE="${BASE:-https://s.f0xx.org}"
BEARER="${BEARER:?set BEARER to a trusted API token}"
SIGNER="${SIGNER:-}"
TARGET="${TARGET:-https://defender.net/very/long/link?demo=1}"
TTL="${TTL:-3600}"

echo "==> 1) Health"
curl -fsS "$BASE/api/v1/health" | head -c 200
echo

echo "==> 2) Shorten (POST preferred)"
SHORT_JSON="$(curl -fsS -X POST "$BASE/api/v1/shorten" \
  -H 'Content-Type: application/json' \
  -d "$(jq -nc --arg url "$TARGET" --arg bearer "$BEARER" --argjson ttl "$TTL" \
    '{url:$url,bearer:$bearer,ttl:$ttl}')")"
echo "$SHORT_JSON" | jq .

SHORT="$(echo "$SHORT_JSON" | jq -r '.u // empty')"
if [[ -z "$SHORT" ]]; then
  echo "shorten failed (no .u in response)" >&2
  exit 1
fi
SLUG="${SHORT##*/}"

echo "==> 3) Shorten cache hit (same bearer + url)"
curl -fsS -X POST "$BASE/api/v1/shorten" \
  -H 'Content-Type: application/json' \
  -d "$(jq -nc --arg url "$TARGET" --arg bearer "$BEARER" --argjson ttl "$TTL" \
    '{url:$url,bearer:$bearer,ttl:$ttl}')" | jq .

echo "==> 4) Redirect (HEAD — no body)"
curl -sSI "$SHORT" | grep -E '^(HTTP|Location:)'

echo "==> 5) QR PNG"
curl -fsS -o "/tmp/url-shortener-qr-${SLUG}.png" "$BASE/api/v1/qr/${SLUG}.png?size=256"
file "/tmp/url-shortener-qr-${SLUG}.png"

if [[ -n "$SIGNER" ]]; then
  echo "==> 6) Permanent link (ttl=0, signer required)"
  curl -fsS -X POST "$BASE/api/v1/shorten" \
    -H 'Content-Type: application/json' \
    -d "$(jq -nc --arg url "$TARGET&perm=1" --arg bearer "$BEARER" --arg signer "$SIGNER" \
      '{url:$url,bearer:$bearer,signer:$signer,ttl:0}')" | jq .
fi

echo "==> Done"