<?php

namespace App\Http\Controllers\Api\V1\Admin;

use App\Http\Controllers\Api\V1\ApiController;
use App\Http\Resources\PartnerStoreResource;
use App\Models\Household;
use App\Models\PartnerStore;
use App\Services\Store\StoreOperations;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Validation\Rule;
use MatanYadaev\EloquentSpatial\Objects\Point;

class AdminPartnerStoreController extends ApiController
{
    public function __construct(private readonly StoreOperations $ops) {}

    public function index(Request $request): JsonResponse
    {
        $request->validate([
            'status' => ['nullable', 'in:pending_kyc,active,suspended'],
            'q' => ['nullable', 'string', 'max:100'],
            'per_page' => ['nullable', 'integer', 'min:1', 'max:500'],
        ]);
        $perPage = (int) $request->input('per_page', 25);

        $stores = PartnerStore::query()
            ->with(['owner', 'barangay', 'inventory'])
            ->when($request->filled('status'), fn ($q) => $q->where('status', $request->string('status')))
            ->when($request->filled('q'), fn ($q) => $q->where('business_name', 'like', '%'.$request->string('q').'%'))
            ->orderBy('business_name')
            ->paginate($perPage);

        return $this->ok(
            PartnerStoreResource::collection($stores),
            null,
            [
                'page' => $stores->currentPage(),
                'per_page' => $stores->perPage(),
                'total' => $stores->total(),
                'last_page' => $stores->lastPage(),
            ],
        );
    }

    public function store(Request $request): JsonResponse
    {
        $data = $request->validate([
            'owner_user_id' => ['required', 'integer', 'exists:users,id'],
            'business_name' => ['required', 'string', 'max:191'],
            'business_permit_number' => ['nullable', 'string', 'max:64'],
            'address_line' => ['nullable', 'string', 'max:255'],
            'barangay_id' => ['nullable', 'integer', 'exists:barangays,id'],
            'lat' => ['nullable', 'numeric', 'between:-90,90'],
            'lng' => ['nullable', 'numeric', 'between:-180,180'],
            'commission_rate_percent' => ['nullable', 'integer', 'min:0', 'max:50'],
            'status' => ['nullable', Rule::in(['pending_kyc', 'active', 'suspended'])],
        ]);

        $payload = collect($data)->except(['lat', 'lng'])->all();
        if (isset($data['lat'], $data['lng'])) {
            $payload['coordinates'] = new Point((float) $data['lat'], (float) $data['lng'], 4326);
        }

        $store = PartnerStore::create($payload);

        return $this->created(
            new PartnerStoreResource($store->load(['owner', 'barangay'])),
            'Store created',
        );
    }

    public function show(PartnerStore $store): JsonResponse
    {
        $store->load(['owner', 'barangay', 'inventory']);

        return $this->ok(new PartnerStoreResource($store));
    }

    public function update(Request $request, PartnerStore $store): JsonResponse
    {
        $data = $request->validate([
            'business_name' => ['sometimes', 'required', 'string', 'max:191'],
            'business_permit_number' => ['sometimes', 'nullable', 'string', 'max:64'],
            'commission_rate_percent' => ['sometimes', 'integer', 'min:0', 'max:50'],
            'status' => ['sometimes', Rule::in(['pending_kyc', 'active', 'suspended'])],
            'address_line' => ['sometimes', 'nullable', 'string', 'max:255'],
            'barangay_id' => ['sometimes', 'nullable', 'integer', 'exists:barangays,id'],
            'lat' => ['sometimes', 'nullable', 'numeric', 'between:-90,90'],
            'lng' => ['sometimes', 'nullable', 'numeric', 'between:-180,180'],
        ]);

        $payload = collect($data)->except(['lat', 'lng'])->all();
        if (isset($data['lat'], $data['lng'])) {
            $payload['coordinates'] = new Point((float) $data['lat'], (float) $data['lng'], 4326);
        }

        $store->update($payload);

        return $this->ok(new PartnerStoreResource($store->fresh()->load(['owner', 'barangay', 'inventory'])), 'Store updated');
    }

    public function issueInventory(Request $request, PartnerStore $store): JsonResponse
    {
        $data = $request->validate([
            'quantity' => ['required', 'integer', 'min:1', 'max:50000'],
            'wholesale_price_centavos' => ['required', 'integer', 'min:0'],
        ]);

        if ($store->status !== PartnerStore::STATUS_ACTIVE) {
            return $this->fail('Store must be active to receive inventory', null, 422);
        }

        $purchase = $this->ops->issueWholesale(
            $store,
            (int) $data['quantity'],
            (int) $data['wholesale_price_centavos'],
        );

        return $this->created([
            'purchase_id' => $purchase->id,
            'batch_number' => $purchase->batch->batch_number,
            'quantity' => $purchase->quantity,
            'inventory_balance' => $store->fresh()->load('inventory')->inventory?->current_code_balance ?? 0,
        ], 'Inventory issued');
    }

    public function recordSale(Request $request, PartnerStore $store): JsonResponse
    {
        $globalPrice = config('qr.default_retail_price_per_code_centavos', 1000);

        $data = $request->validate([
            'household_id' => ['required', 'integer', 'exists:households,id'],
            'quantity' => ['required', 'integer', 'min:1', 'max:1000'],
            'retail_price_per_code_centavos' => ['nullable', 'integer', 'in:' . $globalPrice],
        ]);

        $retailPrice = (int) ($data['retail_price_per_code_centavos'] ?? $globalPrice);

        try {
            $household = Household::findOrFail($data['household_id']);
            $sale = $this->ops->sellToHousehold(
                $store,
                $household,
                (int) $data['quantity'],
                $retailPrice,
            );
        } catch (\DomainException $e) {
            return $this->fail($e->getMessage(), null, 422);
        }

        return $this->created([
            'sale_id' => $sale->id,
            'quantity' => $sale->quantity,
            'retail_price_centavos' => $sale->retail_price_centavos,
            'commission_centavos' => $sale->commission_centavos,
        ], 'Sale recorded');
    }

    public function purchases(Request $request, PartnerStore $store): JsonResponse
    {
        $purchases = $store->purchases()
            ->with('batch')
            ->latest()
            ->paginate(15);

        return $this->ok(
            $purchases->map(fn ($p) => [
                'id' => $p->id,
                'batch_number' => $p->batch?->batch_number ?? '—',
                'quantity' => $p->quantity,
                'wholesale_price_pesos' => number_format($p->wholesale_price_centavos / 100, 2),
                'paid_at' => $p->paid_at?->toIso8601String() ?? $p->created_at?->toIso8601String(),
            ]),
            null,
            [
                'page' => $purchases->currentPage(),
                'per_page' => $purchases->perPage(),
                'total' => $purchases->total(),
                'last_page' => $purchases->lastPage(),
            ]
        );
    }

    public function salesHistory(Request $request, PartnerStore $store): JsonResponse
    {
        $sales = $store->sales()
            ->with(['household.head'])
            ->latest()
            ->paginate(15);

        return $this->ok(
            $sales->map(fn ($s) => [
                'id' => $s->id,
                'household_name' => $s->household?->head?->full_name ?? '—',
                'household_email' => $s->household?->head?->email ?? '—',
                'quantity' => $s->quantity,
                'retail_price_pesos' => number_format($s->retail_price_centavos / 100, 2),
                'commission_pesos' => number_format($s->commission_centavos / 100, 2),
                'sold_at' => $s->sold_at?->toIso8601String() ?? $s->created_at?->toIso8601String(),
            ]),
            null,
            [
                'page' => $sales->currentPage(),
                'per_page' => $sales->perPage(),
                'total' => $sales->total(),
                'last_page' => $sales->lastPage(),
            ]
        );
    }

    public function analytics(PartnerStore $store): JsonResponse
    {
        $totalWholesaleCost = (int) $store->purchases()->sum('wholesale_price_centavos');
        $totalRetailRevenue = (int) $store->sales()->sum('retail_price_centavos');
        $totalCommission = (int) $store->sales()->sum('commission_centavos');
        $grossProfit = $totalRetailRevenue - $totalWholesaleCost;

        return $this->ok([
            'total_wholesale_cost_pesos' => number_format($totalWholesaleCost / 100, 2),
            'total_retail_revenue_pesos' => number_format($totalRetailRevenue / 100, 2),
            'total_commission_pesos' => number_format($totalCommission / 100, 2),
            'gross_profit_pesos' => number_format($grossProfit / 100, 2),
            'total_issued_codes' => (int) $store->purchases()->sum('quantity'),
            'total_sold_codes' => (int) $store->sales()->sum('quantity'),
        ]);
    }
}