<?php

namespace App\Models\Business;

use App\Abstracts\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasOne;

class CourierQuoteVersion extends Model
{
    protected $table = 'business_courier_quote_versions';

    protected $fillable = [
        'company_id', 'version_code', 'source_quote_id', 'source_change_id', 'sheet_name', 'company_name',
        'carrier_name', 'courier_expcode', 'billing_rules', 'quote_type', 'effective_date', 'end_date', 'source_range', 'values_json', 'formulas_json',
        'status', 'signature_status', 'created_by', 'approved_by', 'void_reason', 'voided_at', 'voided_by',
        'billing_structure', 'billing_rows',
    ];

    public const STATUS_APPROVED = 'approved';

    /** 发错作废：不再参与生效判断，原件和回签单保留。 */
    public const STATUS_VOIDED = 'voided';

    protected $casts = [
        'company_id' => 'integer',
        'effective_date' => 'date',
        'end_date' => 'date',
        'voided_at' => 'datetime',
        'billing_structure' => 'array',
        'billing_rows' => 'array',
    ];

    /** 短期（临时）变价：有结束日期，到期后回到原来的长期报价。 */
    public function isTemporary(): bool
    {
        return $this->end_date !== null && !$this->change?->isStockQuote();
    }

    /** 某一天是否在这一版的执行期间内（开始 ≤ 日期 ≤ 结束；长期版本没有结束）。 */
    public function coversDate(\DateTimeInterface $date): bool
    {
        return $this->activePeriod($date) !== null;
    }

    public function executionPeriods(): array
    {
        return (!$this->change?->isStockQuote() ? data_get($this->change?->quote_payload, 'execution_periods') : null)
            ?: [['effective_date' => $this->effective_date?->toDateString(), 'end_date' => $this->end_date?->toDateString()]];
    }

    public function activePeriod(\DateTimeInterface $date): ?array
    {
        $day = $date->format('Y-m-d');
        foreach ($this->executionPeriods() as $period) {
            if (filled($period['effective_date']) && $period['effective_date'] <= $day
                && (empty($period['end_date']) || $period['end_date'] >= $day)) return $period;
        }
        return null;
    }

    public function nextPeriod(\DateTimeInterface $date): ?array
    {
        foreach ($this->executionPeriods() as $period) {
            if ($period['effective_date'] > $date->format('Y-m-d')) return $period;
        }
        return null;
    }

    /** 执行期间文字，如「2026-10-12 至 2026-10-15（临时）」或「2026-10-01 起」。 */
    public function periodLabel(): string
    {
        if ($this->effective_date === null) {
            return '-';
        }

        return \App\Support\CourierQuotePeriods::label($this->executionPeriods(), $this->isTemporary());
    }

    /** 是否已有可用于运费核算的结构化计费规则。 */
    public function hasBillingRules(): bool
    {
        $mode = $this->billing_structure['mode'] ?? null;

        return is_string($mode) && $mode !== 'other' && is_array($this->billing_rows) && $this->billing_rows !== [];
    }

    public function isVoided(): bool
    {
        return $this->status === self::STATUS_VOIDED;
    }

    /** 存量报价审核后按执行日期生效，不以补签或历史签署资料为前置条件。 */
    public function isApprovedStockQuote(): bool
    {
        return $this->status === self::STATUS_APPROVED
            && $this->change?->status === CourierQuoteChange::STATUS_APPROVED
            && $this->change->isStockQuote();
    }

    public function signatureLabel(): string
    {
        return $this->isApprovedStockQuote() && !in_array($this->signature_status, ['历史签署资料已归档', '已签署并归档'], true)
            ? '存量报价，审核生效（无需签章）' : (string) $this->signature_status;
    }

    public function change(): BelongsTo
    {
        return $this->belongsTo(CourierQuoteChange::class, 'source_change_id');
    }

    public function signature(): HasOne
    {
        return $this->hasOne(CourierQuoteSignature::class, 'quote_version_id');
    }
}