server/data_generator.py

import json
import random
from typing import List, Dict, Any
from uuid import uuid4

try:
    from models import Invoice, Receivable, VendorProfile
except ImportError:
    try:
        from cashflowmanager.models import Invoice, Receivable, VendorProfile
    except ImportError:
        from ..models import Invoice, Receivable, VendorProfile

def generate_company_profile(difficulty="medium"):
    starting_cash = 1000000
    if difficulty == "easy": starting_cash = 1500000
    elif difficulty == "hard": starting_cash = 500000
    
    return {
        "name": f"Enterprise-{random.randint(100, 999)}",
        "starting_cash": starting_cash,
        "credit_limit": 500000,
        "revenue_target": 2000000
    }

def generate_vendors(n: int = 5, difficulty: str = "medium") -> List[Dict[str, Any]]:
    vendors = []
    names = ["FastLogistics", "GlobalParts", "EnergyCo", "SecureCloud", "ProConsulting"]
    for i in range(min(n, len(names))):
        base_trust = 0.7 if difficulty == "easy" else 0.5 if difficulty == "medium" else 0.3
        v = VendorProfile(
            id=f"v-{i}",
            name=names[i],
            trust_score=random.uniform(base_trust, base_trust + 0.2),
            negotiation_flexibility=random.uniform(0.2, 0.6)
        )
        vendors.append(v.model_dump())
    return vendors

def generate_invoices(vendors: List[Dict[str, Any]], difficulty: str = "medium") -> List[Dict[str, Any]]:
    # Easy: 5 invoices, Medium: 10, Hard: 15
    n = 5 if difficulty == "easy" else 10 if difficulty == "medium" else 15
    invoices = []
    # Hard mode has higher interest, late fees, and AMOUNTS
    int_mult = 0.5 if difficulty == "easy" else 1.0 if difficulty == "medium" else 2.0
    amt_mult = 0.7 if difficulty == "easy" else 1.0 if difficulty == "medium" else 1.5
    
    for _ in range(n):
        vendor = random.choice(vendors)
        inv = Invoice(
            id=str(uuid4())[:8],
            vendor_id=vendor["id"],
            amount=random.uniform(50000, 300000) * amt_mult,
            due_in=random.randint(1, 10),
            late_fee=random.uniform(5000, 20000) * int_mult,
            min_payment=random.uniform(10000, 50000),
            interest=random.uniform(0.01, 0.05) * int_mult,
            status="unpaid"
        )
        invoices.append(inv.model_dump())
    return invoices

def generate_receivables(difficulty: str = "medium") -> List[Dict[str, Any]]:
    # Easy: 7 receivables, Medium: 5, Hard: 3
    n = 7 if difficulty == "easy" else 5 if difficulty == "medium" else 3
    receivables = []
    # Hard mode has lower payment probability
    prob_base = 0.85 if difficulty == "easy" else 0.75 if difficulty == "medium" else 0.55
    for i in range(n):
        rec = Receivable(
            id=f"r-{i}",
            customer_id=f"c-{i}",
            amount=random.uniform(100000, 500000),
            expected_in=random.randint(2, 12),
            probability=random.uniform(prob_base, prob_base + 0.1)
        )
        receivables.append(rec.model_dump())
    return receivables

def generate_scenario(difficulty="medium"):
    vendors = generate_vendors(difficulty=difficulty)
    return {
        "company": generate_company_profile(difficulty=difficulty),
        "vendors": vendors,
        "initial_invoices": generate_invoices(vendors, difficulty=difficulty),
        "initial_receivables": generate_receivables(difficulty=difficulty),
        "hidden_events": [
            {"day": random.randint(3, 7), "type": "cash_shock", "amount": -random.uniform(100000, 300000), "desc": "Equipment Failure"},
            {"day": random.randint(5, 10), "type": "payment_delay", "target_id": "r-0", "delay": 3}
        ]
    }

if __name__ == "__main__":
    scenario = generate_scenario()
    print(json.dumps(scenario, indent=2))