<?php

namespace App\Http\Controllers\Api\V1;

use App\Http\Controllers\Controller;
use App\Models\Opportunity;
use App\Services\InvestmentCatalogue;
use App\Services\OpportunityMaturity;
use App\Services\OpportunityTextSearch;
use App\Services\PublicSearchMetrics;
use App\Services\SectorOrganization;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;

class OpportunityController extends Controller
{
    public function search(Request $request): JsonResponse
    {
        $validated = $request->validate([
            'q' => ['nullable', 'string', 'max:120'],
            'sector' => ['nullable', 'string', 'max:80'],
            'province' => ['nullable', 'string', 'max:80'],
            'province_id' => ['nullable', 'uuid'],
            'district_id' => ['nullable', 'uuid'],
            'admin_post_id' => ['nullable', 'uuid'],
            'locality_id' => ['nullable', 'uuid'],
            'geo_location_id' => ['nullable', 'uuid'],
            'maturity_level' => ['nullable', 'integer', 'between:1,6'],
            'per_page' => ['nullable', 'integer', 'min:1', 'max:50'],
            'min_amount' => ['nullable', 'numeric', 'min:0', 'max:999999999999'],
            'max_amount' => ['nullable', 'numeric', 'min:0', 'max:999999999999', ...($request->filled('min_amount') ? ['gte:min_amount'] : [])],
            'currency' => ['nullable', 'required_with:min_amount,max_amount', 'in:MZN,USD,EUR,ZAR'],
        ]);

        $query = Opportunity::with('sector:id,name,slug')->published();
        foreach (['min_amount' => '>=', 'max_amount' => '<='] as $field => $operator) {
            if (isset($validated[$field])) {
                $query->where('estimated_investment_amount', $operator, $validated[$field]);
            }
        }
        if (! empty($validated['currency'])) {
            $query->where('estimated_investment_currency', $validated['currency']);
        }

        if (! empty($validated['q'])) {
            app(OpportunityTextSearch::class)->constrain($query, $validated['q']);
        }

        if (! empty($validated['sector'])) {
            $sector = $validated['sector'];
            SectorOrganization::constrain($query, $sector);
        }

        $territory = array_intersect_key($validated, array_flip(['province', 'province_id', 'district_id', 'admin_post_id', 'locality_id', 'geo_location_id']));
        if (array_filter($territory, fn ($value) => $value !== null && $value !== '') !== []) {
            // Keep the legacy search's sorting and non-territorial filters while sharing the public territorial contract.
            $query->whereIn('opportunities.id', app(InvestmentCatalogue::class)->query($territory)->reorder()->select('opportunities.id'));
        }

        if (! empty($validated['maturity_level'])) {
            OpportunityMaturity::constrainSearch($query, 'historical:'.$validated['maturity_level']);
        }

        $results = $query->orderByDesc('is_featured')
            ->orderByDesc('published_at')
            ->paginate($validated['per_page'] ?? 12);
        app(PublicSearchMetrics::class)->candidate($request, 'opportunities_api', $results->total(), $validated);

        return response()->json($results->withQueryString()->through(fn ($record) => app(InvestmentCatalogue::class)->presentLocation($record)));
    }

    public function show(string $slug): JsonResponse
    {
        $opportunity = Opportunity::with('sector:id,name,slug')
            ->where('slug', $slug)->published()->firstOrFail();

        return response()->json(['success' => true, 'data' => $opportunity]);
    }
}