<?php

namespace App\Http\Requests;

use App\Services\CountryCatalogue;
use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Support\Facades\DB;
use Illuminate\Validation\Validator;

class StoreSimulationFormDraftRequest extends FormRequest
{
    /** @return array{personal_snapshot: array<string,mixed>, economic_snapshot: array<string,mixed>} */
    public function snapshots(): array
    {
        $validated = $this->validated();
        $personal = $validated['personal_snapshot'] ?? null;
        $economic = $validated['economic_snapshot'] ?? null;
        if (! is_array($personal) || ! is_array($economic)) {
            throw new \LogicException('Validated simulation snapshots must be arrays.');
        }

        return ['personal_snapshot' => $personal, 'economic_snapshot' => $economic];
    }

    public function authorize(): bool
    {
        return true;
    }

    /** @return array<string, list<mixed>> */
    public function rules(): array
    {
        $personal = [
            'person_type', 'investor_origin', 'tax_residency_country', 'fiscal_residency_country', 'entity_stage', 'legal_form', 'nuit',
            'investor_profile_id', 'profile_confirmation', 'legal_name', 'commercial_name', 'registration_number',
            'representative_name', 'representative_capacity', 'email', 'phone', 'address', 'contact_country', 'selection_labels',
            'contact_province', 'contact_district', 'preferred_channel',
        ];
        $economic = [
            'journey_type', 'detail_level', 'business_plan_snapshot', 'financial_tools_snapshot', 'cashflow_snapshot', 'project_team_snapshot', 'project_execution_snapshot', 'purpose', 'manifestation_type', 'preferred_language', 'project_title', 'project_summary', 'project_problem', 'target_customers', 'value_proposition', 'market_assumption', 'market_source', 'project_milestones', 'selection_labels', 'project_type',
            'competitor_assumption', 'sales_channel_assumption', 'marketing_approach', 'location_rationale', 'project_risk_responses_snapshot', 'project_questionnaire_version',
            'customer_validation_status', 'cost_estimate_status', 'location_assessment_status', 'funding_status', 'receivables_timing_status',
            'project_type_other', 'sector_id', 'activity_id', 'products_services', 'maturity_stage', 'expected_start_date',
            'project_duration_years', 'existing_project_id', 'province_id', 'district_id', 'admin_post_id', 'locality_id',
            'site_known', 'latitude', 'longitude', 'area_required', 'area_unit', 'special_zone_id', 'land_status',
            'infrastructure_needs', 'currency', 'total_investment', 'own_capital', 'domestic_debt', 'foreign_debt',
            'grants', 'secured_amount', 'sought_amount', 'annual_revenue', 'annual_operating_costs', 'expected_profit',
            'financing_term_months', 'funds_origin_countries', 'direct_jobs', 'indirect_jobs', 'national_jobs',
            'foreign_jobs', 'skills_needed', 'local_content_percentage', 'exports_value', 'import_substitution_value',
            'environmental_category', 'community_benefits', 'tax_calculation', 'fiscal_scenario_mode', 'base', 'rate', 'reduction',
            'sales_taxable', 'sales_exempt', 'sales_zero_rate', 'exports', 'deductible_costs', 'non_deductible_costs',
            'carried_losses', 'payroll', 'outbound_payments', 'imports', 'claimed_benefits', 'reference_date',
            'fiscal_currency', 'fiscal_period', 'fiscal_periodicity', 'fiscal_month', 'fiscal_quarter', 'fiscal_reference_date', 'irps_salary_view', 'fiscal_component', 'fiscal_income_category', 'fiscal_residency_assessment',
            'fiscal_operation', 'fiscal_activity', 'fiscal_establishments', 'fiscal_documentation',
            'fiscal_customs_code', 'fiscal_vat_refund_state',
            'offer_or_demand', 'opportunity_type', 'opportunity_type_other', 'opportunity_description',
            'opportunity_value', 'opportunity_currency', 'opportunity_conditions', 'opportunity_deadline',
            'required_documents', 'confidentiality', 'publish_requested', 'terms_accepted', 'truth_declaration', 'reuse_simulation',
            'contact_authorisation', 'publication_authorisation', 'public_fields_confirmation', 'validation_acknowledged',
            'final_declaration_name',
        ];

        $rules = [
            // Anonymous clients must send an empty snapshot; `required` rejects
            // an empty array before the privacy policy can enforce that shape.
            'context' => ['nullable', 'uuid'],
            'personal_snapshot' => ['present', 'array:'.implode(',', $personal)],
            'economic_snapshot' => ['required', 'array:'.implode(',', $economic)],
            'economic_snapshot.purpose' => ['required', 'in:simulate_only,own_investment,seek_investor,seek_partner,present_opportunity,request_facilitation'],
            'economic_snapshot.journey_type' => ['nullable', 'in:personal,small_business,company,investor'],
            'economic_snapshot.detail_level' => ['nullable', 'in:simple,advanced'],
            'economic_snapshot.business_plan_snapshot' => ['nullable', 'string', 'max:60000'],
            'economic_snapshot.financial_tools_snapshot' => ['nullable', 'string', 'max:30000'],
            'economic_snapshot.cashflow_snapshot' => ['nullable', 'string', 'max:20000'],
            'economic_snapshot.project_team_snapshot' => ['nullable', 'string', 'max:30000'],
            'economic_snapshot.project_execution_snapshot' => ['nullable', 'string', 'max:30000'],
            'economic_snapshot.project_risk_responses_snapshot' => ['nullable', 'string', 'max:30000'],
            'economic_snapshot.project_questionnaire_version' => ['nullable', 'string', 'max:100'],
            'economic_snapshot.customer_validation_status' => ['nullable', 'in:yes,no,partial,unknown,not_applicable'],
            'economic_snapshot.cost_estimate_status' => ['nullable', 'in:yes,no,partial,unknown,not_applicable'],
            'economic_snapshot.location_assessment_status' => ['nullable', 'in:yes,no,partial,unknown,not_applicable'],
            'economic_snapshot.receivables_timing_status' => ['nullable', 'in:yes,no,partial,unknown,not_applicable'],
            'economic_snapshot.funding_status' => ['nullable', 'in:confirmed,in_process,not_started,unknown,not_applicable'],
            'economic_snapshot.manifestation_type' => ['nullable', 'in:investment,business'],
            'economic_snapshot.preferred_language' => ['nullable', 'in:pt-MZ,en'],
            'economic_snapshot.project_type' => ['nullable', 'in:new,expansion,acquisition,partnership,concession,supplier,buyer,other'],
            'economic_snapshot.maturity_stage' => ['nullable', 'in:idea,concept,pre_feasibility,feasibility,financing,implementation,operation'],
            'economic_snapshot.land_status' => ['nullable', 'in:owned,duat,leased,requested,unknown'],
            'economic_snapshot.offer_or_demand' => ['nullable', 'in:offer,demand,both'],
            'economic_snapshot.opportunity_type' => ['nullable', 'in:capital,partner,buyer,supplier,land,technology,licence,services,other'],
            'economic_snapshot.confidentiality' => ['nullable', 'in:public,registered_users,restricted,confidential'],
            'economic_snapshot.site_known' => ['nullable', 'in:yes,no'],
            'economic_snapshot.tax_calculation' => ['nullable', 'in:yes,no'],
            'economic_snapshot.fiscal_scenario_mode' => ['nullable', 'in:approved_parameters,custom_planning,no_calculation'],
            'economic_snapshot.fiscal_period' => ['nullable', 'integer', 'in:'.implode(',', range(2000, today()->year + 1))],
            'economic_snapshot.fiscal_periodicity' => ['nullable', 'in:monthly,quarterly,annual,one_off,unknown'],
            'economic_snapshot.fiscal_month' => ['nullable', 'regex:/^(0[1-9]|1[0-2])$/'],
            'economic_snapshot.fiscal_quarter' => ['nullable', 'in:Q1,Q2,Q3,Q4'],
            'economic_snapshot.fiscal_reference_date' => ['nullable', 'date_format:Y-m-d'],
            'economic_snapshot.irps_salary_view' => ['nullable', 'in:monthly_net_estimate,monthly_withholding,annual_assessment'],
            'economic_snapshot.fiscal_component' => ['nullable', 'in:irpc,iva,ispc,irps,inss,withholding,customs_ice'],
            'economic_snapshot.fiscal_income_category' => ['nullable', 'in:employment,rental,digital,capital_gain,business,other,unknown'],
            'economic_snapshot.fiscal_residency_assessment' => ['nullable', 'in:self_reported_resident,self_reported_non_resident,unknown'],
            'economic_snapshot.fiscal_operation' => ['nullable', 'in:domestic,non_resident,import,export,refund,other,unknown'],
            'economic_snapshot.fiscal_documentation' => ['nullable', 'in:documented,partly_documented,not_documented,unknown'],
            'economic_snapshot.fiscal_vat_refund_state' => ['nullable', 'in:estimate_only,request_filed,recognized,received,unknown'],
            'economic_snapshot.publish_requested' => ['nullable', 'in:yes,no'],
            'economic_snapshot.terms_accepted' => ['nullable', 'in:yes,no'],
            'economic_snapshot.truth_declaration' => ['nullable', 'in:yes,no'],
            'economic_snapshot.reuse_simulation' => ['nullable', 'in:yes,no'],
            'economic_snapshot.contact_authorisation' => ['nullable', 'in:yes,no'],
            'economic_snapshot.publication_authorisation' => ['nullable', 'in:yes,no'],
            'economic_snapshot.public_fields_confirmation' => ['nullable', 'in:yes,no'],
            'economic_snapshot.validation_acknowledged' => ['nullable', 'in:yes,no'],
            'economic_snapshot.currency' => ['nullable', 'string', 'regex:/^[A-Z]{3}$/'],
            'economic_snapshot.opportunity_currency' => ['nullable', 'string', 'regex:/^[A-Z]{3}$/'],
            'economic_snapshot.rate' => ['nullable', 'numeric', 'between:0,100'],
            'economic_snapshot.reduction' => ['nullable', 'numeric', 'between:0,100'],
            'economic_snapshot.local_content_percentage' => ['nullable', 'numeric', 'between:0,100'],
            'economic_snapshot.latitude' => ['nullable', 'numeric', 'between:-90,90'],
            'economic_snapshot.longitude' => ['nullable', 'numeric', 'between:-180,180'],
            'economic_snapshot.expected_start_date' => ['nullable', 'date'],
            'economic_snapshot.opportunity_deadline' => ['nullable', 'date'],
            'economic_snapshot.reference_date' => ['nullable', 'date'],
            'economic_snapshot.*' => ['nullable'],
        ];

        foreach (['base', 'area_required', 'total_investment', 'own_capital', 'domestic_debt', 'foreign_debt', 'grants',
            'secured_amount', 'sought_amount', 'annual_revenue', 'annual_operating_costs', 'expected_profit', 'exports_value',
            'import_substitution_value', 'sales_taxable', 'sales_exempt', 'sales_zero_rate', 'exports', 'deductible_costs',
            'non_deductible_costs', 'carried_losses', 'opportunity_value'] as $field) {
            $rules['economic_snapshot.'.$field] = ['nullable', 'numeric', 'min:0'];
        }
        foreach (['direct_jobs', 'indirect_jobs', 'national_jobs', 'foreign_jobs', 'financing_term_months', 'project_duration_years'] as $field) {
            $rules['economic_snapshot.'.$field] = ['nullable', 'integer', 'min:0'];
        }
        $rules['economic_snapshot.fiscal_establishments'] = ['nullable', 'integer', 'min:1'];
        foreach (['fiscal_activity', 'fiscal_customs_code'] as $field) {
            $rules['economic_snapshot.'.$field] = ['nullable', 'string', 'max:300'];
        }
        foreach (['infrastructure_needs', 'funds_origin_countries', 'required_documents'] as $field) {
            $rules['economic_snapshot.'.$field] = ['nullable', 'array', 'max:100'];
            $rules['economic_snapshot.'.$field.'.*'] = ['nullable', 'string', 'max:3000'];
        }
        $rules['economic_snapshot.infrastructure_needs.*'] = ['nullable', 'in:energia,água,estrada,porto,ferrovia,telecomunicações,armazenamento,customers,raw_materials,workers,facilities,costs,legal_requirements'];
        $rules['economic_snapshot.required_documents.*'] = ['nullable', 'in:identity_document,company_registration,nuit_certificate,company_profile,business_plan,feasibility_study,proof_of_funds,special_zone_certificate,licence,site_map'];
        foreach (['skills_needed', 'payroll', 'outbound_payments', 'imports', 'claimed_benefits', 'opportunity_conditions'] as $field) {
            $rules['economic_snapshot.'.$field] = ['nullable', 'string', 'max:10000'];
        }
        $rules['economic_snapshot.selection_labels'] = ['nullable', 'array'];
        foreach (['project_summary', 'project_problem', 'target_customers', 'value_proposition', 'market_assumption', 'market_source', 'project_milestones', 'opportunity_description', 'products_services', 'community_benefits', 'competitor_assumption', 'sales_channel_assumption', 'marketing_approach', 'location_rationale'] as $field) {
            $rules['economic_snapshot.'.$field] = ['nullable', 'string', 'max:10000'];
        }
        $rules['personal_snapshot.email'] = ['nullable', 'email:rfc', 'max:254'];
        $rules['personal_snapshot.nuit'] = ['nullable', 'string', 'max:32'];
        $rules['personal_snapshot.investor_profile_id'] = ['nullable', 'uuid'];
        $rules['personal_snapshot.profile_confirmation'] = ['nullable', 'boolean'];
        $rules['personal_snapshot.selection_labels'] = ['nullable', 'array'];
        $rules['personal_snapshot.person_type'] = ['nullable', 'in:singular,collective,sole_trader,consortium'];
        $rules['personal_snapshot.investor_origin'] = ['nullable', 'in:national,foreign,mixed'];
        $rules['personal_snapshot.entity_stage'] = ['nullable', 'in:existing,being_formed'];
        $rules['economic_snapshot.sector_id'] = ['nullable', 'integer', 'exists:sectors,id'];
        $rules['economic_snapshot.activity_id'] = ['nullable', 'uuid', 'exists:economic_activities,id'];
        foreach (['existing_project_id', 'special_zone_id'] as $field) {
            $rules['economic_snapshot.'.$field] = ['nullable', 'string', 'max:100'];
        }
        foreach (['province_id', 'district_id', 'admin_post_id', 'locality_id'] as $field) {
            $rules['economic_snapshot.'.$field] = ['nullable', 'uuid', 'exists:geo_locations,id'];
        }
        foreach (['person_type', 'investor_origin', 'tax_residency_country', 'fiscal_residency_country', 'entity_stage', 'legal_form', 'commercial_name',
            'registration_number', 'representative_name', 'representative_capacity', 'phone', 'address', 'contact_country',
            'contact_province', 'contact_district', 'preferred_channel'] as $field) {
            $rules['personal_snapshot.'.$field] = ['nullable', 'string', 'max:3000'];
        }
        foreach (['tax_residency_country', 'fiscal_residency_country', 'contact_country'] as $field) {
            $rules['personal_snapshot.'.$field][] = app(CountryCatalogue::class)->legacyCountryRule();
        }
        $rules['economic_snapshot.funds_origin_countries.*'][] = app(CountryCatalogue::class)->legacyCountryRule();

        return $rules;
    }

    public function withValidator(Validator $validator): void
    {
        $validator->after(function (Validator $validator): void {
            $economic = $this->input('economic_snapshot', []);
            if (! is_array($economic)) {
                return;
            }

            foreach ([
                'project_team_snapshot' => [
                    'keys' => ['competency', 'state', 'action', 'estimated_cost', 'due_date'],
                    'states' => ['available', 'gap', 'unknown'],
                    'amounts' => ['estimated_cost'],
                ],
                'project_execution_snapshot' => [
                    'keys' => ['title', 'due_date', 'status', 'planned_amount', 'actual_amount'],
                    'states' => ['planned', 'in_progress', 'completed'],
                    'amounts' => ['planned_amount', 'actual_amount'],
                ],
            ] as $field => $schema) {
                if (! isset($economic[$field]) || $economic[$field] === '') {
                    continue;
                }
                $rows = json_decode((string) $economic[$field], true);
                $valid = is_array($rows) && count($rows) <= 100;
                foreach (is_array($rows) ? $rows : [] as $row) {
                    if (! is_array($row) || array_diff(array_keys($row), $schema['keys']) !== []
                        || array_diff($schema['keys'], array_keys($row)) !== []
                        || array_filter($row, fn ($value) => ! is_string($value) || mb_strlen($value) > 500) !== []) {
                        $valid = false;
                        break;
                    }
                    $stateKey = $field === 'project_team_snapshot' ? 'state' : 'status';
                    if (! in_array($row[$stateKey], $schema['states'], true)) {
                        $valid = false;
                        break;
                    }
                    foreach ($schema['amounts'] as $amountKey) {
                        if ($row[$amountKey] !== '' && (! is_numeric($row[$amountKey]) || (float) $row[$amountKey] < 0)) {
                            $valid = false;
                        }
                    }
                    foreach (['due_date'] as $dateKey) {
                        if ($row[$dateKey] !== '' && ! preg_match('/^\d{4}-\d{2}-\d{2}$/', $row[$dateKey])) {
                            $valid = false;
                        }
                    }
                }
                if (! $valid) {
                    $validator->errors()->add('economic_snapshot.'.$field, 'O plano estruturado contém linhas ou valores inválidos.');
                }
            }

            if (isset($economic['project_risk_responses_snapshot']) && $economic['project_risk_responses_snapshot'] !== '') {
                $responses = json_decode((string) $economic['project_risk_responses_snapshot'], true);
                $validResponses = is_array($responses) && array_is_list($responses) && count($responses) <= 30;
                foreach (is_array($responses) ? $responses : [] as $response) {
                    if (! is_array($response)
                        || array_diff(array_keys($response), ['risk_id', 'action', 'owner', 'estimated_cost', 'due_date']) !== []
                        || array_diff(['risk_id', 'action', 'owner', 'estimated_cost', 'due_date'], array_keys($response)) !== []
                        || array_filter($response, fn ($value) => ! is_string($value) || mb_strlen($value) > 500) !== []
                        || ! preg_match('/^[a-z0-9-]{1,80}$/', $response['risk_id'])
                        || ($response['estimated_cost'] !== '' && (! is_numeric($response['estimated_cost']) || (float) $response['estimated_cost'] < 0))
                        || ($response['due_date'] !== '' && ! preg_match('/^\d{4}-\d{2}-\d{2}$/', $response['due_date']))) {
                        $validResponses = false;
                        break;
                    }
                }
                if (! $validResponses) {
                    $validator->errors()->add('economic_snapshot.project_risk_responses_snapshot', 'As respostas planeadas para lacunas ou riscos não são válidas.');
                }
            }

            if (isset($economic['fiscal_scenario_mode'])) {
                $custom = $economic['fiscal_scenario_mode'] === 'custom_planning';
                $providedCount = 0;
                foreach (['base', 'rate', 'reduction'] as $field) {
                    $present = isset($economic[$field]) && $economic[$field] !== '';
                    $providedCount += $present ? 1 : 0;
                    if (! $custom && $present) {
                        $validator->errors()->add('economic_snapshot.'.$field, 'Valores hipotéticos só podem ser enviados no cenário personalizado.');
                    }
                }
                if ($custom && $providedCount > 0 && $providedCount < 3) {
                    foreach (['base', 'rate', 'reduction'] as $field) {
                        if (! isset($economic[$field]) || $economic[$field] === '') {
                            $validator->errors()->add('economic_snapshot.'.$field, 'Preencha todos os pressupostos se começar um cenário personalizado.');
                        }
                    }
                }
            }

            $allowedLabels = [
                'economic_snapshot.selection_labels' => ['journey_type', 'detail_level', 'purpose', 'manifestation_type', 'preferred_language', 'project_type', 'maturity_stage', 'sector_id', 'activity_id',
                    'province_id', 'district_id', 'admin_post_id', 'locality_id', 'site_known', 'land_status', 'infrastructure_needs',
                    'area_unit', 'required_documents', 'opportunity_currency',
                    'currency', 'funds_origin_countries', 'environmental_category', 'tax_calculation', 'fiscal_scenario_mode', 'offer_or_demand',
                    'opportunity_type', 'confidentiality', 'publish_requested', 'terms_accepted', 'truth_declaration',
                    'reuse_simulation', 'contact_authorisation', 'publication_authorisation', 'public_fields_confirmation', 'validation_acknowledged',
                    'fiscal_currency', 'fiscal_period', 'fiscal_periodicity', 'fiscal_month', 'fiscal_quarter', 'fiscal_reference_date', 'irps_salary_view', 'fiscal_component', 'fiscal_income_category', 'fiscal_residency_assessment', 'fiscal_operation',
                    'fiscal_documentation', 'fiscal_vat_refund_state'],
                'personal_snapshot.selection_labels' => ['person_type', 'investor_origin', 'tax_residency_country', 'fiscal_residency_country', 'entity_stage', 'legal_form', 'preferred_channel'],
            ];
            foreach ($allowedLabels as $path => $allowedFields) {
                $snapshot = str_starts_with($path, 'personal_') ? $this->input('personal_snapshot.selection_labels', []) : ($economic['selection_labels'] ?? []);
                foreach (is_array($snapshot) ? $snapshot : [] as $field => $label) {
                    $labels = is_array($label) ? $label : [$label];
                    if (! is_string($field) || ! in_array($field, $allowedFields, true) || count($labels) > 100
                        || collect($labels)->contains(fn ($value) => ! is_string($value) || mb_strlen($value) > 255)) {
                        $validator->errors()->add($path, 'Os rótulos de selecção não são válidos.');
                        break 2;
                    }
                }
            }

            if (isset($economic['activity_id'], $economic['sector_id'])) {
                $matchesSector = DB::table('economic_activities as a')
                    ->join('reference_catalog_versions as v', 'v.id', '=', 'a.catalog_version_id')
                    ->where('a.id', $economic['activity_id'])->where('a.sector_id', $economic['sector_id'])
                    ->where('a.status', 'published')->where('v.status', 'published')
                    ->whereDate('a.valid_from', '<=', today())
                    ->where(fn ($query) => $query->whereNull('a.valid_to')->orWhereDate('a.valid_to', '>', today()))->exists();
                if (! $matchesSector) {
                    $validator->errors()->add('economic_snapshot.activity_id', 'A actividade não pertence ao sector seleccionado ou já não está publicada.');
                }
            } elseif (! empty($economic['activity_id'])) {
                $validator->errors()->add('economic_snapshot.sector_id', 'Seleccione o sector antes da actividade económica.');
            }

            $parents = ['district_id' => ['province_id', 'district'], 'admin_post_id' => ['district_id', 'admin_post'], 'locality_id' => ['admin_post_id', 'locality']];
            foreach ($parents as $child => [$parentField, $type]) {
                if (empty($economic[$child])) {
                    continue;
                }
                $parentType = ['district' => 'province', 'admin_post' => 'district', 'locality' => 'admin_post'][$type];
                $valid = ! empty($economic[$parentField]) && DB::table('geo_locations as child')
                    ->join('geo_locations as parent', 'parent.id', '=', 'child.parent_id')
                    ->where('child.id', $economic[$child])->where('child.location_type', $type)
                    ->where('child.source_system', 'cartografia-workbook')->where('child.data_classification', 'public')->whereNull('child.deleted_at')
                    ->where('parent.id', $economic[$parentField])->where('parent.location_type', $parentType)
                    ->where('parent.source_system', 'cartografia-workbook')->where('parent.data_classification', 'public')->whereNull('parent.deleted_at')->exists();
                if (! $valid) {
                    $validator->errors()->add('economic_snapshot.'.$child, 'Seleccione uma opção publicada dependente do nível territorial anterior.');
                }
            }

            $financeKeys = ['total_investment', 'own_capital', 'domestic_debt', 'foreign_debt', 'grants'];
            if (collect($financeKeys)->every(fn (string $key) => array_key_exists($key, $economic) && $economic[$key] !== null && $economic[$key] !== '')) {
                $funding = (float) $economic['own_capital'] + (float) $economic['domestic_debt'] + (float) $economic['foreign_debt'] + (float) $economic['grants'];
                if (abs($funding - (float) $economic['total_investment']) > 0.01) {
                    $validator->errors()->add('economic_snapshot.total_investment', 'A soma do capital, dívida e subvenções deve reconciliar com o investimento total.');
                }
            }
        });
    }
}