#!/usr/bin/env bash
# test_api.sh — íÌÑøÈ ÇáÜ API æíÏæøä ÇáäÊÇÆÌ Ýí test_results.log
BASE_URL=${BASE_URL:-http://localhost:5000}
LOGFILE="./test_results.log"

timestamp(){ date +"%Y-%m-%d %H:%M:%S"; }

echo "=== TEST RUN $(timestamp) ===" >> "$LOGFILE"

run(){
  method=$1; url=$2; data=$3
  if [ -n "$data" ]; then
    resp=$(curl -s -w "\n%{http_code}" -X "$method" -H "Content-Type: application/json" -d "$data" "$url")
  else
    resp=$(curl -s -w "\n%{http_code}" -X "$method" "$url")
  fi
  body=$(echo "$resp" | sed '$d')
  code=$(echo "$resp" | tail -n1)
  echo "[$(timestamp)] $method $url -> $code" >> "$LOGFILE"
  echo "$body" >> "$LOGFILE"
  echo "----" >> "$LOGFILE"
}

# 1. health
run GET "$BASE_URL/health"

# 2. list books (should be empty)
run GET "$BASE_URL/books"

# 3. add books
b1='{"id":1,"title":"Clean Code","author":"Robert C. Martin","year":2008,"copies":1}'
b2='{"id":2,"title":"The Pragmatic Programmer","author":"Andrew Hunt","year":1999,"copies":2}'
run POST "$BASE_URL/books" "$b1"
run POST "$BASE_URL/books" "$b2"

# 4. add users
u1='{"id":10,"name":"Mustafa","email":"m@example.com"}'
u2='{"id":11,"name":"Sara","email":"s@example.com"}'
run POST "$BASE_URL/users" "$u1"
run POST "$BASE_URL/users" "$u2"

# 5. borrow book id=1 by user 10 (should succeed)
loan1='{"user_id":10,"book_id":1}'
run POST "$BASE_URL/loans" "$loan1"

# 6. borrow same book id=1 again -> copies=1 so should fail (409)
run POST "$BASE_URL/loans" "$loan1"

# 7. borrow book id=2 twice (copies=2) by two users -> both succeed
loan2='{"user_id":11,"book_id":2}'
run POST "$BASE_URL/loans" "$loan2"
run POST "$BASE_URL/loans" '{"user_id":10,"book_id":2}'

# 8. list active loans
run GET "$BASE_URL/loans?active=true"

# 9. return loan id 1
run PUT "$BASE_URL/loans/1/return"

# 10. try returning again (should get 400)
run PUT "$BASE_URL/loans/1/return"

# 11. delete book 999 (not exist -> 404)
run DELETE "$BASE_URL/books/999"

# 12. update book 2
run PUT "$BASE_URL/books/2" '{"copies":1,"year":2000}'

# 13. list books & loans
run GET "$BASE_URL/books"
run GET "$BASE_URL/loans"

echo "=== END TEST RUN $(timestamp) ===" >> "$LOGFILE"
echo "" >> "$LOGFILE"