<?php

namespace App\Http\Controllers;

use App\Models\EconomicCluster;
use App\Models\InvestmentGap;
use App\Models\ValueChain;
use App\Models\ValueChainLink;
use App\Services\PortalAudit;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Validation\Rule;

class ClusterValueChainController extends Controller
{
    public function link(Request $request, EconomicCluster $cluster): RedirectResponse
    {
        $data = $request->validate([
            'from_value_chain_id' => ['required', 'uuid', Rule::exists('value_chains', 'id')->where('cluster_id', $cluster->id)->whereNull('deleted_at')],
            'to_value_chain_id' => ['required', 'uuid', 'different:from_value_chain_id', Rule::exists('value_chains', 'id')->where('cluster_id', $cluster->id)->whereNull('deleted_at')],
            'link_type' => ['required', Rule::in(['supplies', 'processes', 'distributes', 'supports'])],
        ]);
        DB::transaction(function () use ($cluster, $data, $request) {
            EconomicCluster::whereKey($cluster->id)->lockForUpdate()->firstOrFail();
            $link = ValueChainLink::where($data)->first() ?? new ValueChainLink;
            PortalAudit::save($link, $data, $request->user()->id);
        });

        return back()->with('success', 'Ligação entre etapas guardada.');
    }

    public function removeLink(Request $request, EconomicCluster $cluster, ValueChainLink $link): RedirectResponse
    {
        DB::transaction(function () use ($cluster, $link, $request) {
            EconomicCluster::whereKey($cluster->id)->lockForUpdate()->firstOrFail();
            abort_unless(ValueChain::where('cluster_id', $cluster->id)->whereIn('id', [$link->from_value_chain_id, $link->to_value_chain_id])->count() === 2, 404);
            PortalAudit::save($link, ['deleted_at' => now()], $request->user()->id);
        });

        return back()->with('success', 'Ligação retirada. O histórico foi preservado.');
    }

    public function gap(Request $request, EconomicCluster $cluster, ?InvestmentGap $gap = null): RedirectResponse
    {
        abort_if($gap && $gap->cluster_id !== $cluster->id, 404);
        $data = $request->validate([
            'value_chain_id' => ['required', 'uuid', Rule::exists('value_chains', 'id')->where('cluster_id', $cluster->id)->whereNull('deleted_at')],
            'title' => ['required', 'string', 'max:200'],
            'location' => ['required', 'string', 'max:1000'],
            'required_capacity' => ['required', 'string', 'max:2000'],
            'rationale' => ['required', 'string', 'min:10', 'max:5000'],
            'status' => ['required', Rule::in(['identified', 'in_review', 'resolved', 'withdrawn'])],
            'call_to_action' => ['required', 'string', 'max:2000'],
        ]);
        PortalAudit::save($gap ?? new InvestmentGap, [...$data, 'cluster_id' => $cluster->id], $request->user()->id);

        return back()->with('success', 'Lacuna de investimento guardada.');
    }
}