import requests
import json
import textwrap

def analyze_network_request(url_awal: str):
    """
    Melakukan request HTTP ke URL, melacak seluruh rantai redirect (history),
    dan menampilkan detail Request/Response Headers serta Payload (JSON/Text)
    untuk setiap langkah, menyerupai Developer Tools.
    """

    print("=========================================================================")
    print(f"🚀 Memulai Analisis Jaringan GET ke: {url_awal}")
    print("=========================================================================")

    try:
        # Lakukan request, biarkan requests mengikuti redirect secara otomatis
        response = requests.get(url_awal, timeout=15)

        # Gabungkan objek riwayat dengan objek respons akhir untuk iterasi penuh
        all_responses = response.history + [response]

        for i, resp in enumerate(all_responses):
            is_final = (i == len(all_responses) - 1)

            # --- Judul Langkah ---
            if is_final:
                print("\n\n#########################################################################")
                print(f"🏁 RESPON AKHIR (Final URL)")
                print("#########################################################################")
            else:
                print("\n-------------------------------------------------------------------------")
                print(f"➡️ LANGKAH {i+1} - REDIRECT ({resp.status_code})")
                print("-------------------------------------------------------------------------")

            # 1. TAMPILAN REQUEST HEADERS
            print(f"1. REQUEST HEADERS ({resp.request.method}):")
            print(f"   URL: {resp.url}")
            for header, value in resp.request.headers.items():
                print(f"   > {header}: {value}")

            # Request Body (Payload) - Biasanya N/A untuk GET
            request_body = resp.request.body if resp.request.body else 'N/A (No Body)'
            if request_body != 'N/A (No Body)':
                 print(f"   Body: {request_body}")


            # 2. TAMPILAN RESPONSE HEADERS
            print(f"\n2. RESPONSE HEADERS (Status: {resp.status_code}):")
            for header, value in resp.headers.items():
                if not is_final and header.lower() == 'location':
                    # Highlight Location header untuk langkah redirect
                    print(f"   >> **{header}: {value}**")
                else:
                    print(f"   > {header}: {value}")

            # 3. TAMPILAN RESPONSE PAYLOAD (Hanya di langkah akhir)
            if is_final:
                print("\n3. RESPONSE PAYLOAD (Body):")

                # Cek Content-Type untuk petunjuk
                content_type = resp.headers.get('Content-Type', '').lower()

                try:
                    # 💥 Prioritas #1: Coba parsing sebagai JSON (untuk Ajax)
                    data_json = resp.json()

                    # Konfirmasi Tipe
                    if 'application/json' in content_type:
                        print("   [TIPE: JSON (Ajax) - Confirmed by Header]")
                    else:
                        print("   [TIPE: JSON (Ajax) - Parsing Berhasil]")

                    # Format JSON yang rapi
                    formatted_json = json.dumps(data_json, indent=2)
                    # Tampilkan hingga 1000 karakter pertama
                    print(textwrap.indent(formatted_json[:1000] + ('...' if len(formatted_json) > 1000 else ''), '   '))

                except (json.JSONDecodeError, UnicodeDecodeError):
                    # 💥 Prioritas #2: Jika gagal, tampilkan sebagai Teks/HTML
                    print("   [TIPE: Text/HTML/Other - Gagal Parsing JSON]")
                    text_snippet = resp.text
                    # Tampilkan hingga 500 karakter pertama
                    print(textwrap.indent(text_snippet[:500] + ('...' if len(text_snippet) > 500 else ''), '   '))


    except requests.exceptions.RequestException as e:
        print(f"\n❌ Terjadi kesalahan saat melakukan request: {e}")
    finally:
        print("\n=========================================================================")

# --- CARA MENGGUNAKAN (WORKING EXAMPLE) ---
# Gunakan URL API (JSON) untuk melihat Payload JSON
# url_to_test = "https://jsonplaceholder.typicode.com/todos/1"

# Gunakan URL web (HTML + Redirect Chain) untuk melihat Redirect History
url_to_test = "http://www.cisco.com"

# Jalankan fungsi
analyze_network_request(url_to_test)