<?php

/**
 * Golden-value tests for DedicatedPricingCalculator.
 *
 * The expected values replicate PartOrder's arithmetic step by step (captured
 * from core/models/store/dedi/PartOrder.php: round(…, 2) after every stage).
 * With location_multiplier = 1.0 the calculator MUST be byte-identical to
 * PartOrder::breakdown() for the same inputs — that identity is what lets the
 * PR workspace and the price tool share one formula.
 *
 * Run: php scripts/test-pricing-calculator.php   (exit 0 = pass)
 */

require_once __DIR__ . '/../core/services/DedicatedPricingCalculator.php';

$fails = 0;
function check(string $name, $got, $want): void
{
    global $fails;
    if (abs((float) $got - (float) $want) > 0.0001) {
        echo "FAIL  {$name}: got {$got}, want {$want}\n";
        $fails++;
    } else {
        echo "ok    {$name} = {$want}\n";
    }
}

// ---- Case 1: the desk-default path (mirrors a real PartOrder sheet) ------
// partsTotal 2489.97, payoff 24, costPerU 11.73, 2 RU, 35% profit, 10% comm.
// Hand-computed per PartOrder's rounding chain:
//   monthlyHardware = round(2489.97/24, 2)            = 103.75
//   monthlyLocation = round(11.73 × 2 × 1.0, 2)       = 23.46
//   base            = round(103.75 + 23.46, 2)        = 127.21
//   profitAmount    = round(127.21 × 0.35, 2)         = 44.52
//   withProfit      = round(127.21 + 44.52, 2)        = 171.73
//   commission      = round(171.73 × 0.10, 2)         = 17.17
//   suggested       = round(171.73 + 17.17, 2)        = 188.90
$r = DedicatedPricingCalculator::calculate(
    ['parts_total' => 2489.97, 'rack_units' => 2, 'cost_per_u' => 11.73],
    ['payoff_months' => 24, 'profit_pct' => 35, 'commission_pct' => 10, 'location_multiplier' => 1.0]
);
check('c1.monthlyHardware', $r['monthlyHardware'], 103.75);
check('c1.monthlyLocation', $r['monthlyLocation'], 23.46);
check('c1.baseMonthly', $r['baseMonthly'], 127.21);
check('c1.profitAmount', $r['profitAmount'], 44.52);
check('c1.withProfit', $r['withProfit'], 171.73);
check('c1.commissionAmount', $r['commissionAmount'], 17.17);
check('c1.suggestedMonthly', $r['suggestedMonthly'], 188.90);
check('c1.costFloor', $r['costFloor'], 127.21);

// ---- Case 2: GPU category with a location multiplier ---------------------
//   monthlyLocation = round(10.00 × 4 × 1.5, 2)  = 60.00
//   monthlyHardware = round(12000/36, 2)         = 333.33
//   base = 393.33; profit 40% = 157.33; withProfit = 550.66
//   commission 10% = 55.07; suggested = 605.73
$r = DedicatedPricingCalculator::calculate(
    ['parts_total' => 12000, 'rack_units' => 4, 'cost_per_u' => 10.00],
    ['payoff_months' => 36, 'profit_pct' => 40, 'commission_pct' => 10, 'location_multiplier' => 1.5]
);
check('c2.monthlyHardware', $r['monthlyHardware'], 333.33);
check('c2.monthlyLocation', $r['monthlyLocation'], 60.00);
check('c2.suggestedMonthly', $r['suggestedMonthly'], 605.73);

// ---- Case 3: overrides beat the category --------------------------------
$r = DedicatedPricingCalculator::calculate(
    ['parts_total' => 1000, 'rack_units' => 1, 'cost_per_u' => 0, 'payoff_months' => 10, 'profit_pct' => 0, 'commission_pct' => 0],
    ['payoff_months' => 24, 'profit_pct' => 35, 'commission_pct' => 10, 'location_multiplier' => 1.0]
);
check('c3.monthlyHardware(override 10mo)', $r['monthlyHardware'], 100.00);
check('c3.suggestedMonthly(no margins)', $r['suggestedMonthly'], 100.00);

// ---- Case 4: zero-payoff guard (PartOrder returns partsTotal) ------------
$r = DedicatedPricingCalculator::calculate(
    ['parts_total' => 500, 'rack_units' => 1, 'cost_per_u' => 0, 'payoff_months' => 0],
    ['profit_pct' => 0, 'commission_pct' => 0]
);
check('c4.zeroPayoff', $r['monthlyHardware'], 500.00);

// ---- Case 5: PartOrder default-category equivalence (no multiplier) ------
// Same numbers as the price tool's documented example formula.
$r = DedicatedPricingCalculator::calculate(
    ['parts_total' => 840.50, 'rack_units' => 1, 'cost_per_u' => 14.20],
    ['payoff_months' => 24, 'profit_pct' => 35, 'commission_pct' => 10, 'location_multiplier' => 1.0]
);
// monthlyHardware = round(840.50/24,2)=35.02; loc=14.20; base=49.22
// profit=17.23; wp=66.45; comm=6.65; suggested=73.10
check('c5.suggestedMonthly', $r['suggestedMonthly'], 73.10);

echo $fails === 0 ? "\nALL PASS\n" : "\n{$fails} FAILURE(S)\n";
exit($fails === 0 ? 0 : 1);