#!/usr/bin/env python3
"""FASE 6 — VALIDATION SUITE

Tests:
  1. Notifications: templates, dispatch, logs
  2. Savings: retail price, calculation, reports
  3. Logistics: couriers, shipments, tracking
  4. Public API: keys, validation, rate limiting
"""

import os, sys, time
sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

from tenant_db import get_master_conn, get_tenant_conn_by_dbname
from services.notification_engine import (
    get_templates, create_template, dispatch_notification,
    get_notification_logs, mark_as_read, notify_low_stock,
)
from services.savings_engine import (
    calculate_item_savings, record_sale_savings,
    get_customer_savings_report, get_global_savings_stats,
)
from services.logistics_engine import (
    create_shipment, get_shipment, list_shipments,
    update_shipment_status, get_couriers, add_courier,
)
from services.public_api_engine import (
    create_api_key, validate_api_key, check_rate_limit,
    increment_rate_limit, list_api_keys, revoke_api_key,
)

MASTER_DB_URL = os.environ.get('MASTER_DB_URL', 'postgresql://postgres@/nexus_autoparts')
TENANT_TEMPLATE = os.environ.get('TENANT_DB_URL_TEMPLATE', 'postgresql://postgres@/{db_name}')

PASS = '\033[92mPASS\033[0m'
FAIL = '\033[91mFAIL\033[0m'
passed = 0
failed = 0


def ok(label, condition, detail=''):
    global passed, failed
    if condition:
        print(f"  [{PASS}] {label}")
        passed += 1
    else:
        print(f"  [{FAIL}] {label} {detail}")
        failed += 1


# Get a test tenant
master = get_master_conn()
cur = master.cursor()
cur.execute("SELECT db_name FROM tenants WHERE is_active = true ORDER BY id LIMIT 1")
row = cur.fetchone()
cur.close(); master.close()

if not row:
    print("No active tenant found!")
    sys.exit(1)

db_name = row[0]
conn = get_tenant_conn_by_dbname(db_name)

print("=" * 60)
print("FASE 6: Notificaciones + Ahorro + Logística + API Pública")
print("=" * 60)

# ─── NOTIFICATIONS ─────────────────────────────
print("\n[NOTIFICACIONES]")
try:
    # Templates
    templates = get_templates(conn, 1, event_type='low_stock')
    ok("Get templates", len(templates) >= 1, f"count={len(templates)}")

    # Create custom template
    tid = create_template(conn, 1, 'test_event', 'push', 'Test Template',
                          'Hello {name}', subject_template='Test: {name}')
    if not tid:
        # Template may already exist from previous run
        cur = conn.cursor()
        cur.execute("SELECT id FROM notification_templates WHERE tenant_id = 1 AND event_type = 'test_event' AND channel = 'push'")
        row = cur.fetchone()
        tid = row[0] if row else None
        cur.close()
    ok("Create template", tid is not None)

    # Dispatch
    log_ids = dispatch_notification(conn, 1, 'test_event', {'name': 'World'}, recipient_type='owner')
    ok("Dispatch notification", len(log_ids) >= 1)

    # Logs
    logs = get_notification_logs(conn, 1, event_type='test_event')
    ok("Get logs", len(logs) >= 1)

    if logs:
        mark_as_read(conn, logs[0]['id'])
        logs2 = get_notification_logs(conn, 1, status='read')
        ok("Mark as read", any(l['id'] == logs[0]['id'] for l in logs2))

    # Low stock convenience
    cur = conn.cursor()
    cur.execute("SELECT id FROM inventory WHERE is_active = true LIMIT 1")
    inv_row = cur.fetchone()
    cur.close()
    if inv_row:
        ls_ids = notify_low_stock(conn, 1, inv_row[0], stock=2, reorder_point=5)
        ok("Low stock notify", len(ls_ids) >= 1)
except Exception as e:
    conn.rollback()
    ok("Notifications", False, str(e))

# ─── SAVINGS ─────────────────────────────
print("\n[AHORRO]")
try:
    # Calculation
    savings, pct = calculate_item_savings(100, 150, 2)
    ok("Calculate savings", savings == 100.0 and pct == 33.3, f"savings={savings}, pct={pct}")

    # Zero retail price
    s2, p2 = calculate_item_savings(100, 0, 1)
    ok("Zero retail price", s2 == 0.0 and p2 == 0.0)

    # Set retail price on inventory
    cur = conn.cursor()
    cur.execute("SELECT id, price_1 FROM inventory WHERE is_active = true LIMIT 1")
    inv_row = cur.fetchone()
    if inv_row:
        inv_id, price = inv_row
        retail = float(price) * 1.5 if price else 200.00
        cur.execute("UPDATE inventory SET retail_price = %s WHERE id = %s", (retail, inv_id))
        conn.commit()

        # Create a sale with that item to test record_sale_savings
        cur.execute("""
            INSERT INTO sales (branch_id, customer_id, employee_id, subtotal, discount_total, tax_total, total, payment_method, status, sale_type)
            VALUES (NULL, NULL, NULL, 100, 0, 16, 116, 'efectivo', 'completed', 'cash')
            RETURNING id
        """)
        sale_id = cur.fetchone()[0]
        cur.execute("""
            INSERT INTO sale_items (sale_id, inventory_id, part_number, name, quantity, unit_price, unit_cost, discount_pct, discount_amount, tax_rate, tax_amount, subtotal, retail_price)
            VALUES (%s, %s, 'TEST', 'Test Item', 1, 100, 50, 0, 0, 0.16, 16, 100, %s)
        """, (sale_id, inv_id, retail))
        conn.commit()
        cur.close()

        total_saved = record_sale_savings(conn, sale_id)
        ok("Record sale savings", total_saved > 0, f"saved={total_saved}")

        # Check sale has savings
        cur = conn.cursor()
        cur.execute("SELECT total_savings FROM sales WHERE id = %s", (sale_id,))
        sale_savings = cur.fetchone()[0]
        cur.close()
        ok("Sale savings recorded", sale_savings is not None and float(sale_savings) > 0, f"sale_savings={sale_savings}")
    else:
        cur.close()
        ok("Savings inventory", False, "No inventory item found")

    # Global stats
    stats = get_global_savings_stats(conn, 1)
    ok("Global savings stats", isinstance(stats, dict) and 'total_saved' in stats)
except Exception as e:
    conn.rollback()
    ok("Savings", False, str(e))

# ─── LOGISTICS ─────────────────────────────
print("\n[LOGÍSTICA]")
try:
    couriers = get_couriers(conn, 1)
    ok("Default couriers", len(couriers) >= 4, f"count={len(couriers)}")

    # Add courier
    courier_code = f'test_courier_{int(time.time())}'
    cid = add_courier(conn, 1, 'Test Courier', courier_code,
                      tracking_url_template='https://track.example.com/{tracking_number}')
    ok("Add courier", cid is not None)

    # Create shipment
    result = create_shipment(conn, {
        'tenant_id': 1, 'shipment_type': 'outbound', 'related_type': 'sale', 'related_id': 1,
        'courier_id': cid, 'tracking_number': 'TEST123456',
        'destination_address': 'Calle Falsa 123, CDMX',
        'recipient_name': 'Juan Pérez', 'recipient_phone': '5551234567',
        'shipping_cost': 150.00, 'notes': 'Test shipment',
    })
    ok("Create shipment", result.get('shipment_id') is not None and result.get('tracking_url') is not None)
    shipment_id = result['shipment_id']

    # Get shipment
    ship = get_shipment(conn, shipment_id)
    ok("Get shipment", ship is not None and ship['status'] == 'pending')

    # Update status
    update_shipment_status(conn, shipment_id, 'in_transit', location='CDMX Hub',
                           description='Paquete en tránsito')
    ship2 = get_shipment(conn, shipment_id)
    ok("Update status", ship2['status'] == 'in_transit')
    ok("Tracking history", len(ship2.get('tracking_history', [])) >= 2)

    # List shipments
    shipments = list_shipments(conn, 1)
    ok("List shipments", shipments.get('data') is not None)
except Exception as e:
    conn.rollback()
    ok("Logistics", False, str(e))

# ─── PUBLIC API ─────────────────────────────
print("\n[API PÚBLICA]")
try:
    # Create key
    key_id, full_key = create_api_key(conn, 1, 'Test Key', scopes=['read', 'write'])
    ok("Create API key", key_id is not None and full_key.startswith('nx_'))

    # Validate key
    info = validate_api_key(conn, full_key)
    ok("Validate key", info is not None and info.get('valid') is True)
    ok("Key scopes", 'read' in info.get('scopes', []))

    # Invalid key
    bad = validate_api_key(conn, 'nx_invalid_key_here')
    ok("Invalid key rejected", bad is None or bad.get('valid') is False)

    # Rate limit check
    allowed, headers = check_rate_limit(conn, key_id, 60, 10000)
    ok("Rate limit check", allowed is True)
    ok("Rate limit headers", 'X-RateLimit-Limit-Minute' in headers)

    # Increment and check again
    increment_rate_limit(conn, key_id)
    allowed2, _ = check_rate_limit(conn, key_id, 60, 10000)
    ok("Rate limit increment", allowed2 is True)

    # Revoke
    revoke_api_key(conn, key_id)
    revoked = validate_api_key(conn, full_key)
    ok("Revoke key", revoked is not None and revoked.get('valid') is False)

    # List keys
    keys = list_api_keys(conn, 1)
    ok("List keys", isinstance(keys, list))
except Exception as e:
    conn.rollback()
    ok("Public API", False, str(e))

conn.close()

print("\n" + "=" * 60)
print(f"RESULTS: {PASS} {passed} passed, {FAIL} {failed} failed")
print("=" * 60)

sys.exit(0 if failed == 0 else 1)