<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Schema;

return new class extends Migration
{
    public function up(): void
    {
        Schema::create('candidate_portal_versions', function (Blueprint $table) {
            $table->id();
            $table->foreignId('tenant_id')->constrained()->restrictOnDelete();
            $table->foreignId('created_by')->constrained('users')->restrictOnDelete();
            $table->unsignedInteger('version');
            $table->boolean('registration_open');
            $table->text('notice');
            $table->text('reason');
            $table->timestamp('created_at');
            $table->unique(['tenant_id', 'version']);
            $table->unique(['tenant_id', 'id']);
        });
        Schema::create('candidate_accounts', function (Blueprint $table) {
            $table->id();
            $table->foreignId('tenant_id')->constrained()->restrictOnDelete();
            $table->string('email', 254);
            $table->string('password');
            $table->unsignedBigInteger('portal_version_id');
            $table->foreign(['tenant_id', 'portal_version_id'])->references(['tenant_id', 'id'])->on('candidate_portal_versions')->restrictOnDelete();
            $table->timestamps();
            $table->unique(['tenant_id', 'email']);
            $table->unique(['tenant_id', 'id']);
        });
        Schema::create('candidate_profile_versions', function (Blueprint $table) {
            $table->id();
            $table->unsignedBigInteger('tenant_id');
            $table->unsignedBigInteger('candidate_account_id');
            $table->foreign(['tenant_id', 'candidate_account_id'])->references(['tenant_id', 'id'])->on('candidate_accounts')->restrictOnDelete();
            $table->unsignedInteger('version');
            $table->json('data');
            $table->text('reason');
            $table->timestamp('created_at');
            $table->unique(['candidate_account_id', 'version']);
        });
        Schema::create('candidate_events', function (Blueprint $table) {
            $table->id();
            $table->unsignedBigInteger('tenant_id');
            $table->unsignedBigInteger('candidate_account_id');
            $table->foreign(['tenant_id', 'candidate_account_id'])->references(['tenant_id', 'id'])->on('candidate_accounts')->restrictOnDelete();
            $table->string('action', 80);
            $table->json('metadata');
            $table->timestamp('created_at');
        });
        if (DB::getDriverName() === 'sqlite') {
            foreach (['candidate_portal_versions', 'candidate_profile_versions', 'candidate_events'] as $table) {
                // Table names are the fixed allowlist above.
                DB::unprepared("CREATE TRIGGER preserve_{$table}_update BEFORE UPDATE ON {$table} BEGIN SELECT RAISE(ABORT, 'Preservar historico do candidato'); END;
                    CREATE TRIGGER preserve_{$table}_delete BEFORE DELETE ON {$table} BEGIN SELECT RAISE(ABORT, 'Preservar historico do candidato'); END;");
            }
        } elseif (DB::getDriverName() === 'pgsql') {
            DB::unprepared("CREATE FUNCTION sgc_preserve_candidate_versions() RETURNS trigger LANGUAGE plpgsql AS $$ BEGIN RAISE EXCEPTION 'Preservar historico do candidato'; END $$;
                CREATE TRIGGER preserve_candidate_portal_versions BEFORE UPDATE OR DELETE ON candidate_portal_versions FOR EACH ROW EXECUTE FUNCTION sgc_preserve_candidate_versions();
                CREATE TRIGGER preserve_candidate_profile_versions BEFORE UPDATE OR DELETE ON candidate_profile_versions FOR EACH ROW EXECUTE FUNCTION sgc_preserve_candidate_versions();
                CREATE TRIGGER preserve_candidate_events BEFORE UPDATE OR DELETE ON candidate_events FOR EACH ROW EXECUTE FUNCTION sgc_preserve_candidate_versions();");
        }
    }

    public function down(): void
    {
        throw new LogicException('Preservar perfis e versões dos candidatos.');
    }
};